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雜志簡(jiǎn)介

蘇州混凝土水泥制品研究院<br>中國(guó)混凝土與水泥制品協(xié)會(huì)</br>

主辦單位: 蘇州混凝土水泥制品研究院
中國(guó)混凝土與水泥制品協(xié)會(huì)

主編 : 李建華
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混凝土研究

碳酸鹽環(huán)境下隧道襯砌混凝土的腐蝕研究及防治措施

劉漢宏1，傅鶴林2勒棋，任世玉2验趣，樊永強(qiáng)3

2024年第7期

摘要

引用本文

摘 ? 要：依托醴婁高速周家沖隧道工程骗颠，研究了強(qiáng)腐蝕地下水環(huán)境中HCO3-和游離CO2對(duì)混凝土的腐蝕影響预贿，分析了腐蝕機(jī)理轩粮，制備了抗碳酸鹽和碳酸性腐蝕的C40隧道襯砌混凝土鞭矿，并通過(guò)正交試驗(yàn)方法確定了該混凝土的最佳配合比。此外涸噪，還提出了隧道襯砌混凝土防腐措施涧胜。結(jié)果表明：混凝土的最佳配合比為m水泥∶m細(xì)骨料∶m粗骨料∶m水∶m礦粉∶m硅灰∶m硅藻土∶m■∶m減水劑=1∶1.83∶2.43∶0.35∶0.10∶0.062∶0.021∶0.016∶0.012；加強(qiáng)混凝土拌合网闺、運(yùn)輸邹洼、泵送、澆筑部滨、養(yǎng)護(hù)等施工質(zhì)量控制邑茫，加強(qiáng)防排水措施，均可提高隧道襯砌混凝土的抗碳酸鹽和碳酸腐蝕性能床僵。 Abstract: Based on the Zhoujiachong tunnel project of Lilou expressway, the corrosion effect of HCO3- and free CO2 on concrete in highly corrosive groundwater environment were studied. The corrosion mechanism was analyzed, and C40 tunnel lining concrete with resistance to carbonate and carbonation corrosion was prepared. The optimal mix proportion of concrete was determined through orthogonal experimental method. In addition, anti-corrosion measures for tunnel lining concrete were proposed. The results show that the optimal mix proportion of concrete is mcement∶mfine aggregate∶mcoarse aggregate∶mwater∶mmineral powder∶msilica fume∶mdiatomaceous earth∶m■∶mwater reducing agent=1∶1.83∶2.43∶0.35∶0.10∶0.063∶0.021∶0.016∶0.012. Strengthening construction quality control such as concrete mixing, transportation, pumping, pouring, and curing, as well as strengthening waterproof and drainage measures, can improve the carbonate and carbonate corrosion resistance of tunnel lining concrete.

劉漢宏,傅鶴林,任世玉,等.碳酸鹽環(huán)境下隧道襯砌混凝土的腐蝕研究及防治措施[J].混凝土與水泥制品,2024(6):1-6. LIU H H,FU H L,REN S Y,et al.Corrosion study and prevention measures of tunnel lining concrete in carbonate environment[J].China Concrete and Cement Products,2024(6):1-6.

基于機(jī)器學(xué)習(xí)的UHPC抗壓強(qiáng)度預(yù)測(cè)及配合比優(yōu)化

康志堅(jiān)墨删，李火星

2024年第7期

摘要

引用本文

摘 ? 要：結(jié)合試驗(yàn)設(shè)計(jì)、機(jī)器學(xué)習(xí)及緊密堆積模型提出了一種超高性能混凝土（UHPC）抗壓強(qiáng)度預(yù)測(cè)和配合比優(yōu)化方法羔到，并對(duì)比了預(yù)測(cè)結(jié)果與實(shí)測(cè)結(jié)果读会。此外，還將支持向量回歸-粒子群優(yōu)化算法（SVR-PSO）模型與其他常見(jiàn)抗壓強(qiáng)度預(yù)測(cè)模型進(jìn)行了對(duì)比堆显，并基于SVR-PSO模型設(shè)計(jì)開(kāi)發(fā)了圖形用戶(hù)界面預(yù)測(cè)軟件宅诺。結(jié)果表明：SVR-PSO模型在穩(wěn)定性和預(yù)測(cè)精度方面具有明顯優(yōu)勢(shì)，抗壓強(qiáng)度預(yù)測(cè)值和實(shí)測(cè)值誤差在5%以?xún)?nèi)获枫；采用所提出的UHPC配合比設(shè)計(jì)方法狂替，可基于原材料數(shù)據(jù)快速生成滿(mǎn)足抗壓強(qiáng)度要求的UHPC配合比。 Abstract: A method for predicting the compressive strength and optimizing the mix proportion of ultra-high performance concrete (UHPC) was proposed by combining experimental design, machine learning technology, and compact packing model, and the predicted results were compared with the measured results. In addition, the support vector regression-particle swarm optimization algorithm(SVR-PSO) model was compared with other common compressive strength prediction models, and a graphical user interface prediction software was designed and developed based on the SVR-PSO model. The results show that the SVR-PSO model has significant advantages in stability and prediction accuracy, with an error of less than 5% between the predicted and measured compressive strength values. The proposed UHPC mix proportion design method can quickly generate UHPC mix proportions that meet the compressive strength requirements based on raw material datas.

康志堅(jiān),李火星.基于機(jī)器學(xué)習(xí)的UHPC抗壓強(qiáng)度預(yù)測(cè)及配合比優(yōu)化[J].混凝土與水泥制品,2024(7):7-13. KANG Z J,LI H X.Prediction of compressive strength and optimization of mix proportion based on machine learning UHPC[J].China Concrete and Cement Products,2024(7):7-13.

打印路徑對(duì)3D打印混凝土構(gòu)件力學(xué)性能的影響

張學(xué)輝请跨，鄭書(shū)玉扩幕，陳雄姿，安軍海蛊芥，趙雙雙

2024年第7期

摘要

引用本文

摘 ? 要：在3D打印混凝土配合比研究基礎(chǔ)上拾株，對(duì)打印路徑進(jìn)行了優(yōu)化設(shè)計(jì)。采用三種路徑打印成型構(gòu)件龄及，評(píng)估了打印路徑對(duì)3D打印混凝土構(gòu)件力學(xué)性能的影響彻苟，并分析了打印構(gòu)件的力學(xué)各向異性，提出了力學(xué)各向異性系數(shù)抠例，確定了最佳受力方向唬便。此外，通過(guò)SEM分析了打印構(gòu)件的層間界面對(duì)力學(xué)性能的影響训劈。結(jié)果表明：3D打印混凝土構(gòu)件在Z方向受力最大膨陌，打印路徑優(yōu)化后，可有效改善層間薄弱面；打印構(gòu)件在層間界面處的水化產(chǎn)物未能充分填充矮畴，存在空隙消诈、氣泡、裂縫等缺陷柏碴，使打印構(gòu)件的力學(xué)性能降低轿菜。 Abstract: Based on the study of mix proportion of 3D printing concrete, the printing path was optimized, three paths were used to print forming components, and the effect of printing path on the mechanical properties of 3D printing concrete components was evaluated. The mechanical anisotropy of printing components was analyzed, and the mechanical anisotropy coefficient was put forward, so as to determine the best stress direction. The influence of the interlayer interface of the printing component on the mechanical properties was analyzed by SEM. The results indicate that the stress of the 3D printing concrete component is the greatest in the Z direction, and the weak surface of the interlayer can be effectively improved after the printing path is optimized. The hydration products are not fully filled at the interlayer interface, and there are some defects such as voids, bubbles and cracks, which reduces the mechanical properties of the printing components.

張學(xué)輝,鄭書(shū)玉,陳雄姿,等.打印路徑對(duì)3D打印混凝土構(gòu)件力學(xué)性能的影響[J].混凝土與水泥制品,2024(7):14-19,28. ZHANG X H,ZHENG S Y,CHEN X Z,et al.Effect of printing path on mechanical properties of 3D printing concrete components[J].China Concrete and Cement Products,2024(7):14-19,28.

凍融循環(huán)下水工混凝土的相對(duì)動(dòng)彈性模量和質(zhì)量變化規(guī)律研究

張亞濤1，劉長(zhǎng)順2掷首，劉磊1，秦嶺2

2024年第7期

摘要

引用本文

摘 ? 要：為了研究?jī)鋈谘h(huán)條件下水工混凝土相對(duì)動(dòng)彈性模量和質(zhì)量的變化規(guī)律扑腔，基于混凝土凍融破壞機(jī)理和現(xiàn)實(shí)情況分析赛祝，通過(guò)預(yù)制混凝土護(hù)坡砌塊和不同配合比水工混凝土試件的快速凍融試驗(yàn)，分析了質(zhì)量損失率悲蹈、相對(duì)動(dòng)彈性模量和凍融循環(huán)次數(shù)的關(guān)系晓筋。結(jié)果表明：凍融試件質(zhì)量損失率轉(zhuǎn)為正值時(shí)為相對(duì)動(dòng)彈性模量快速降低之時(shí)，此時(shí)混凝土的含水率為快速破壞含水率靴建；凍融過(guò)程中谎蚂，試件質(zhì)量前期增加，后期減少阅硕，但相對(duì)動(dòng)彈性模量一直降低肾就；可以通過(guò)快速修補(bǔ)、防滲處理等方式延緩水工混凝土達(dá)到快速破壞含水率厢亿，實(shí)現(xiàn)提高抗凍性能的目的梦哩。 Abstract: In order to study the changes in the relative dynamic elastic modulus and mass of hydraulic concrete under freeze-thaw cycle conditions, based on the analysis of concrete freeze-thaw failure mechanism and actual situation, the relationship between mass loss rate, relative dynamic elastic modulus, and freeze-thaw cycle number was analyzed through rapid freeze-thaw tests of prefabricated concrete slope protection blocks and hydraulic concrete specimens with different mix proportions. The results show that when the mass loss rate of freeze-thaw specimens turns to a positive value, it is when the relative dynamic elastic modulus rapidly decreases, and at this time, the moisture content of concrete is the rapid failure moisture content. During the freeze-thaw process, the mass of the specimen increases in the early stage and decreases in the later stage, but the relative dynamic elastic modulus keeps decreasing. Rapid repair and anti-seepage treatment can be used to delay the rapid damage of water content in hydraulic concrete, achieving the goal of improving frost resistance.

張亞濤,劉長(zhǎng)順,劉磊,等.凍融循環(huán)下水工混凝土的相對(duì)動(dòng)彈性模量和質(zhì)量變化規(guī)律研究[J].混凝土與水泥制品,2024(7):20-24. ZHANG Y T,LIU C S,LIU l,et al.Research on the relative dynamic elastic modulus and mass variation of hydraulic concrete under freeze-thaw cycle[J].China Concrete and Cement Products,2024(7):20-24.

新型復(fù)合降黏劑在C60主塔混凝土中的應(yīng)用研究

李信1，陳露一1鼎陆，龍勇2娟憾，黃有強(qiáng)1，蓋柯瑜2

2024年第7期

摘要

引用本文

摘 ? 要：針對(duì)C60主塔混凝土黏度大拖录、易開(kāi)裂等問(wèn)題削建，通過(guò)在C60主塔混凝土中摻入新型復(fù)合降黏劑，研究了新型復(fù)合降黏劑摻量（0恃殿、10%腹淖、15%、20%）對(duì)混凝土性能的影響恕饿，并分析了其作用機(jī)理檬寥。結(jié)果表明：新型復(fù)合降黏劑可降低混凝土的黏度，使其具有更好的流動(dòng)性炙氨、勻質(zhì)性诞种，易于泵送，且摻量越高效果越顯著；新型復(fù)合降黏劑對(duì)混凝土7 d抗壓強(qiáng)度有一定影響哼轧，但對(duì)28 d抗壓強(qiáng)度無(wú)不利影響坪柒；新型復(fù)合降黏劑可延緩混凝土的水化進(jìn)程，且摻量增加煎膛，延遲效果也逐漸增加廊挝，混凝土絕熱溫升逐漸降低；新型復(fù)合降黏劑的摻入可降低混凝土的干燥收縮对鹰，且摻量越高笔姻，效果越明顯。 Abstract: Aiming at the problems such as high viscosity and easy cracking of C60 main tower concrete, the effect of the dosage of compound viscosity reducer(0内燕、10%遁丁、15%、20%) on the performance of concrete was studied by adding a new compound viscosity reducer to the C60 main tower concrete, and its mechanism of action was analyzed. The results show that the new compound viscosity reducer can reduce the viscosity of concrete, making it have better fluidity and uniformity, easy pumping, and the higher the dosage, the more significant the effect. The new compound viscosity reducer has a certain impact on the compressive strength of concrete at 7 d, but has no adverse effect on the compressive strength at 28 d. The new compound viscosity reducer can delay the hydration process of concrete, and the delay effect gradually increases with the increase of dosage, and the adiabatic temperature rise of concrete gradually decreases. The addition of the new compound viscosity reducer can reduce the drying shrinkage of concrete, and the higher the dosage, the more obvious the effect.

李信,陳露一,龍勇,等.新型復(fù)合降黏劑在C60主塔混凝土中的應(yīng)用研究[J].混凝土與水泥制品,2024(7):25-28. LI X,CHEN L Y, LONG Y,et al.Study on the application of a new compound viscosity reducer in C60 main tower concrete[J].China Concrete and Cement Products,2024(7):25-28.

膨脹劑摻量對(duì)機(jī)制砂UHPC工作性和自收縮性能的影響

任蒙恩1悍憾，寧利恒1迭藏，康海1釜颈，何曉丹1，元成方2，*

2024年第7期

摘要

引用本文

摘 ? 要：針對(duì)不同膨脹劑摻量下機(jī)制砂超高性能混凝土（UHPC）的工作性及自收縮性能進(jìn)行了試驗(yàn)研究篓抠。結(jié)果表明：隨著膨脹劑摻量的增加垄亡，機(jī)制砂UHPC的流動(dòng)性和凝結(jié)時(shí)間均呈先增后減的趨勢(shì)沛蚕，當(dāng)膨脹劑摻量為10%時(shí)氧烷，二者皆達(dá)到峰值，擴(kuò)展度為445 mm森鸽，初凝時(shí)間和終凝時(shí)間分別為44.4 h和50.2 h突彤；機(jī)制砂UHPC的早期自收縮隨著膨脹劑摻量的增加整體呈先減少后增加的趨勢(shì)，當(dāng)膨脹劑摻量為10%時(shí)缉拒，能夠起到較好的收縮補(bǔ)償作用淄主。 Abstract: The workability and self-shrinkage performance of ultra-high performance concrete(UHPC) with manufacture sand under different expansion agent contents were investigated. The results show that with the increase of the content of expansion agents, the flowability and setting time of UHPC with manufacture sand show a trend of first increasing and then decreasing. When the content of expansion agent is 10%, the flowability and setting time can both reach their peak, with the expansion degree of 445 mm, the initial setting time of 44.4 h, and the final setting time of 50.2 h respectively. The early self-shrinkage of UHPC with manufacture sand shows an overall trend of first decreasing and then increasing with the increase of expansion agent content, and when the expansion agent content is 10%, it can achieve a better shrinkage compensation effect.

任蒙恩,寧利恒,康海,等.膨脹劑摻量對(duì)機(jī)制砂UHPC工作性和自收縮性能的影響[J].混凝土與水泥制品,2024(7):29-32,37. REN Meng’en, NING Liheng, KANG Hai,et al.Effect of expansion agent content on the workability and self-shrinkage performance of UHPC with manufacture sand[J].China Concrete and Cement Products,2024(7):29-32,37.

氣泡結(jié)構(gòu)對(duì)新拌混凝土工作性的影響研究

姚進(jìn)強(qiáng)，樊航*距古，樓栗誠(chéng)

2024年第7期

摘要

引用本文

摘 ? 要：采用新拌混凝土氣泡結(jié)構(gòu)分析儀測(cè)定了新拌混凝土的氣泡結(jié)構(gòu)參數(shù)迅七，通過(guò)灰色關(guān)聯(lián)分析方法研究了氣泡結(jié)構(gòu)參數(shù)對(duì)新拌混凝土工作性的影響，并分析了其作用機(jī)理驳息。結(jié)果表明：不同直徑范圍的氣泡對(duì)新拌混凝土坍落度的影響程度不同捧允；當(dāng)含氣量相近時(shí)，小直徑范圍內(nèi)氣泡含量越多苞怒，新拌混凝土中氣泡的平均直徑和間距系數(shù)越小沸午，可顯著提高新拌混凝土的工作性。 Abstract: The bubble structure parameters of fresh concrete were measured by using the fresh concrete bubble structure analyzer, and the influence of the bubble structure parameters of fresh concrete on its workability was studied by using the grey correlation analysis method, and its mechanism of action was analyzed. The results indicate that bubbles with different diameter ranges have varying degrees of promotion on the slump of fresh concrete. When the air content is similar, the more bubbles in the small diameter range, the smaller the average diameter and spacing coefficient of the overall bubbles in the fresh concrete, which can significantly improve the workability of fresh concrete.

姚進(jìn)強(qiáng),樊航,樓栗誠(chéng).氣泡結(jié)構(gòu)對(duì)新拌混凝土工作性的影響研究[J].混凝土與水泥制品,2024(7):33-37. YAO J Q,FAN H,LOU L C.Study on the influence of bubble structure on the workability of fresh concrete[J].China Concrete and Cement Products,2024(7):33-37.

養(yǎng)護(hù)條件對(duì)混凝土力學(xué)性能及抗硫酸鹽侵蝕性能的影響

曹建青后叠，張萌绷网，趙麗娜豫搪，范文曉，令芳

2024年第7期

摘要

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摘 ? 要：針對(duì)新疆鹽漬環(huán)境及高溫干旱氣候條件下混凝土普遍存在的硫酸鹽侵蝕問(wèn)題帽薛，研究了不同養(yǎng)護(hù)條件[標(biāo)準(zhǔn)養(yǎng)護(hù)珠爪、自然條件下內(nèi)養(yǎng)護(hù)、（40±2）℃恒溫內(nèi)養(yǎng)護(hù)]對(duì)混凝土力學(xué)及抗硫酸鹽侵蝕性能的影響渴梯，進(jìn)行了混凝土的抗壓強(qiáng)度拄洗、干濕循環(huán)硫酸鹽侵蝕試驗(yàn)，計(jì)算了質(zhì)量損失率及耐蝕系數(shù)两丧。結(jié)果表明：SAP內(nèi)養(yǎng)護(hù)可以在一定程度上改善混凝土的抗壓強(qiáng)度怠喜，且可以延緩干濕循環(huán)硫酸鹽侵蝕對(duì)混凝土的腐蝕破壞；混凝土的耐蝕系數(shù)與質(zhì)量損失率之間有顯著的負(fù)相關(guān)性哨彦，隨著耐蝕系數(shù)的降低彻庇，混凝土的質(zhì)量損失率增加。 Abstract: In response to the common sulfate corrosion problem in concrete under saline environment and high-temperature and arid climate conditions in Xinjiang, the effects of different curing conditions[standard curing, internal curing under natural conditions, and constant temperature internal curing at (40±2)℃] on the mechanical and sulfate corrosion resistance performance of concrete were studied. The compressive strength and dry-wet cycle sulfate corrosion test of concrete were carried out, and the mass loss rate and corrosion resistance coefficient were calculated. The results show that SAP internal curing can improve the compressive strength of concrete to a certain extent, and can delay the corrosion damage of concrete caused by dry-wet cycle sulfate corrosion. There is a significant negative correlation between the corrosion resistance coefficient and the mass loss rate of concrete. As the corrosion resistance coefficient decreases, the mass loss rate of concrete increases.

曹建青,張萌,趙麗娜,等.養(yǎng)護(hù)條件對(duì)混凝土力學(xué)性能及抗硫酸鹽侵蝕性能的影響[J].混凝土與水泥制品,2024(7):38-41. CAO J Q,ZHANG M,ZHAO L N,et al.Effect of curing conditions on the mechanics and sulfate resistance of concrete[J].China Concrete and Cement Products,2024(7):38-41.

透水混凝土力學(xué)性能影響因素的研究進(jìn)展與分析

范向前1曹区，2，韓浩田1巢辣，3凤挞，陸俊1，2

2024年第7期

摘要

引用本文

摘 ? 要：為保證工程建設(shè)的安全性和有效性碉算，充分了解不同因素對(duì)透水混凝土力學(xué)性能的影響機(jī)理里恒，總結(jié)了近年來(lái)國(guó)內(nèi)外關(guān)于水灰比、砂率硬躺、摻合料種類(lèi)及摻量邯并、骨料粒徑等因素對(duì)透水混凝土力學(xué)性能影響的研究成果，分析了現(xiàn)有研究中存在的不足和尚未解決的問(wèn)題龙谬，并基于透水混凝土細(xì)觀(guān)損傷機(jī)理和力學(xué)行為桶屏，指出了未來(lái)進(jìn)一步研究方向。 Abstract: In order to ensure the safety and effectiveness of pervious concrete project, and fully understand the influence mechanism of different factors on the mechanical properties of pervious concrete, the domestic and foreign research results on the influence of water-cement ratio, sand rate, admixture type and content, aggregate particle size on the mechanical properties of pervious concrete in recent years were summarized, the shortcomings and unsolved problems in the existing research were analyzed, and the development trend of future research work from the aspects of microscopic damage mechanism and mechanical behavior of pervious concrete were pointed out.

范向前,韓浩田,陸俊.透水混凝土力學(xué)性能影響因素的研究進(jìn)展與分析[J].混凝土與水泥制品,2024(7):42-47,59. FAN X Q,HAN H T,LU J.Research progress and analysis of the effect factors onmechanical properties of pervious concrete[J].China Concrete and Cement Products,2024(7):42-47,59.

水泥混凝土制品

UHPC空心方樁抗彎性能及承載力預(yù)測(cè)研究

高子晴1笛斌，宗鐘凌1狈冬，2，3唁惕，*怖磺，謝青海1，2购摊，駱輝1擒渣，王卓群1，盧浩宇1技晋，賴(lài) 斌1

2024年第7期

摘要

引用本文

摘 ? 要：采用超高性能混凝土（UHPC）制備了空心方樁試件迂枝，研究了不同鋼纖維摻量（1.5%资哪、2.0%、2.5%）及空腔灌注C30普通混凝土對(duì)試件抗彎性能的影響苔产，并基于2.0%鋼纖維摻量娘赴，建立了有限元模型，在此基礎(chǔ)上開(kāi)發(fā)了APPM參數(shù)化插件庚乍，通過(guò)改變?cè)嚰拈L(zhǎng)徑比尝泄、壁厚比得到了大量樣本數(shù)據(jù)，預(yù)測(cè)了不同長(zhǎng)徑比及壁厚比對(duì)試件抗彎承載力的影響毖共。結(jié)果表明：隨著鋼纖維摻量的增加娱庸，試件的抗彎性能提高，空腔灌注C30普通混凝土對(duì)試件的極限抗彎承載力具有提高作用澳悯；隨著長(zhǎng)徑比與壁厚比的增加亏渗，試件的抗彎承載力呈下降趨勢(shì)；有限元模擬結(jié)果與試驗(yàn)結(jié)果一致性較好备矛；訓(xùn)練的機(jī)器學(xué)習(xí)模型可有效預(yù)測(cè)試件的抗彎極限承載力吮朔；長(zhǎng)徑比對(duì)試件的抗彎承載力影響，最大占比達(dá)到了81.7%姚凋。 Abstract: The hollow square pile was prepared by using ultra-high performance concrete (UHPC), and the effects of different steel fiber content (1.5%, 2.0%, 2.5%) and hollow poured C30 ordinary concrete on the flexural performance of specimens were studied, and the finite element model of specimens was established based on the content of 2.0% steel fiber. A large number of sample datas were obtained by changing the wall-to-thickness ratio and the length-diameter ratio, and the effects of which on the flexural bearing capacity of pile foundation were studied and predicted. The results show that with the increase of steel fiber content, the bending performance of the specimens improves, and the injection of C30 ordinary concrete into the cavity has an improving effect on the ultimate bending bearing capacity of the specimens. With the increase of the ratio of length to diameter and wall thickness, the flexural bearing capacity of the specimen decreases. The simulation results are in good agreement with the test results. The trained machine learning model can effectively predict the ultimate bending capacity of the specimens, and the influence of the length-diameter ratio on the flexural bearing capacity of specimens is more significant, accounting for 81.7%.

高子晴,宗鐘凌,謝青海,等.UHPC空心方樁抗彎性能及承載力預(yù)測(cè)研究[J].混凝土與水泥制品,2024(7):48-53. GAO Z Q,ZONG Z L,XIE Q H,Study on the prediction of flexural performance and bearing capacity of UHPC hollow square piles[J].China Concrete and Cement Products,2024(7):48-53.

超大直徑頂管用鋼筋混凝土中繼間密封結(jié)構(gòu) 數(shù)值分析及應(yīng)用研究

桂瞬豐1产作，崔旭輝2，陳春林2忆轿，楊雷2溶诸，馮鑫2

2024年第7期

摘要

引用本文

摘 ? 要：通過(guò)在傳統(tǒng)密封腔內(nèi)增加2道密封圈的方式，對(duì)超大直徑頂管用鋼筋混凝土中繼間密封結(jié)構(gòu)進(jìn)行了優(yōu)化胸叠，采用ABAQUS有限元軟件建立了密封結(jié)構(gòu)數(shù)值模型鸦枚，研究了優(yōu)化后的密封結(jié)構(gòu)在不同工況下的密封性能及接觸壓力變化規(guī)律。現(xiàn)場(chǎng)內(nèi)水壓試驗(yàn)和實(shí)際應(yīng)用效果表明：優(yōu)化后的鋼筋混凝土中繼間密封結(jié)構(gòu)的密封性及抗偏轉(zhuǎn)能力顯著上升稿聘，但需要調(diào)整合適的壓縮高度控页。 Abstract: The sealing structure of the intermediate jacking station for super-large diameter reinforced concrete pipe-jacking was optimized by adding two sealing rings in the traditional sealing chamber, the ABAQUS finite element software was used to establish the numerical model of the sealing structure, and the sealing performance and contact pressure variation of the optimized sealing ring under different working conditions were studied. It indicates that the sealing property and deflection resistance of the interconnecting seal structure are improved significantly after optimization by the hydraulic test and practical application, but it is necessary to adjust the appropriate compression height.

桂瞬豐,崔旭輝,陳春林,等.超大直徑頂管用鋼筋混凝土中繼間密封結(jié)構(gòu)數(shù)值分析及應(yīng)用研究[J].混凝土與水泥制品,2024(7):54-59. GUI S F,CUI X H,CHEN C L,et al.Study on the numerical analysis and application of the intermediate jacking station for super-large diameter reinforced concrete pipe-jacking[J].China Concrete and Cement Products,2024(7):54-59.

纖維材料及制品

纖維增強(qiáng)機(jī)場(chǎng)道面混凝土耐久性能研究與評(píng)價(jià)

江圣澤1，2膀明，張鵬1磨婶，2，*饺汕，盛昀3崔械，陳驚宇3

2024年第7期

摘要

引用本文

摘 ? 要：對(duì)比研究了高強(qiáng)改性聚酯（FC）纖維、聚乙烯醇（PVA）纖維芭轨、耐堿玻璃（AR）纖維的摻量（1.0篡躯、1.2、1.4 kg/m3）對(duì)機(jī)場(chǎng)道面混凝土抗凍挫他、抗沖擊和抗裂性能的影響朽掺，并采用TOPSIS綜合評(píng)價(jià)法優(yōu)選出了最佳的纖維種類(lèi)和摻量。結(jié)果表明：與空白組相比呈灾，摻纖維混凝土的抗凍、抗沖擊和抗裂性能均有所提高积箱；隨著纖維摻量從1.0 kg/m3增至1.4 kg/m3，試件的相對(duì)動(dòng)彈性模量衔棋、破壞沖擊次數(shù)比和裂縫降低系數(shù)均增大扭侦，質(zhì)量損失率和裂縫總面積均減小淹一；與AR斟熟、PVA纖維相比，摻加1.4 kg/m3的FC纖維對(duì)混凝土耐久性能的提升效果最好没棋。 Abstract: The effects of the contents (1.0, 1.2, 1.4 kg/m3) of high-strength modified polyester (FC) fiber, polyvinyl alcohol (PVA) fiber, and alkali-resistant glass (AR) fiber on the frost resistance, impact resistance, and cracking resistance of the airport pavement concrete were comparatively investigated, and the optimum fiber type and content were selected by using the TOPSIS comprehensive evaluation method. The results show that compared with the blank group, the frost resistance, impact resistance, and cracking resistance of fiber reinforced concrete are improved. As the fiber content increases from 1.0 kg/m3 to 1.4 kg/m3, the relative dynamic elastic modulus, the ratio of the number of damaging impacts and the crack reduction coefficient of the specimens increase, and the rate of mass loss and the total area of cracks reduce. Addition of 1.4 kg/m3 of FC fiber show the best improvement in concrete durability compared to AR fiber and PVA fiber.

江圣澤,張鵬,盛昀,等.纖維增強(qiáng)機(jī)場(chǎng)道面混凝土耐久性能研究與評(píng)價(jià)[J].混凝土與水泥制品,2024(7):60-64. JIANG S Z,ZHANG P,SHENG Y,et al.Research and evaluation on durability of fiber reinforced airport pavement concrete[J].China Concrete and Cement Products,2024(7):60-64.

玄武巖-纖維素混雜纖維混凝土抗凍性能研究

孫傳武1琉攘，王學(xué)志1,*，辛明1晌补，賀晶晶2

2024年第7期

摘要

引用本文

摘 ? 要：研究了玄武巖纖維（BF）些蚕、纖維素纖維（CF）、玄武巖-纖維素混雜纖維（BF-CF混雜纖維）對(duì)混凝土抗凍性能的影響请街，并進(jìn)行了SEM分析想飞。結(jié)果表明：?jiǎn)螕紹F或CF均能提升混凝土的抗凍性能，其中嫁赎，BF的提升效果更好；隨著B(niǎo)F或CF摻量的增加芝窝，混凝土的抗凍性能呈先提高后降低的趨勢(shì)累宝，且均優(yōu)于未摻纖維組；BF-CF混雜纖維對(duì)混凝土抗凍性能的改善效果優(yōu)于單摻纖維叛匠，且當(dāng)BF與CF的混摻比例為2∶1時(shí)鄂疮，混凝土的抗凍性能相對(duì)最優(yōu)；纖維混凝土在150次凍融循環(huán)后仍能保持較為緊密的內(nèi)部結(jié)構(gòu)湘讳。 Abstract: The effects of basalt fiber (BF), cellulose fiber (CF), and basalt-cellulose hybrid fiber (BF-CF hybrid fiber) on the frost resistance of concrete were investigated, and SEM analysis was performed. The results show that mixing BF or CF alone can improve the frost resistance of concrete, among which, BF has a better improvement effect. With the increase of the content of BF or CF, the frost resistance of concrete shows a tendency of increasing and then decreasing, and still better than that of the unadulterated fiber group. The improvement effect of BF-CF hybrid fiber on the frost resistance of concrete is better than that of the single fiber, and the frost resistance of the concrete is relatively optimal when the mixing ratio of BF and CF is 2∶1. After 150 freeze-thaw cycles, the fiber reinforced concrete retains a relatively tight internal structure.

孫傳武,王學(xué)志,辛明,等.玄武巖-纖維素混雜纖維混凝土抗凍性能研究[J].混凝土與水泥制品,2024(7):65-69. SUN C W,WANG X Z,XIN M,et al.Study on frost resistance of basalt-cellulose hybrid fiber reinforced concrete[J].China Concrete and Cement Products,2024(7):65-69.

房建材料及制品

界面缺陷對(duì)CFRP加固鋼筋混凝土梁抗彎性能的影響研究

談峰玲1钝彩，蔣宇杰2，*瞻偿，周浩2繁砍，汪毅2

2024年第7期

摘要

引用本文

摘 ? 要：為研究界面缺陷對(duì)CFRP加固鋼筋混凝土梁抗彎性能的影響，制作了3根鋼筋混凝土梁對(duì)比試件因暮，并進(jìn)行了四點(diǎn)彎曲試驗(yàn)咒蚁。同時(shí)，采用ABAQUS分析軟件建立了非線(xiàn)性有限元模型憾煮，并進(jìn)行了數(shù)值模擬分析弛咐。結(jié)果表明：當(dāng)存在多個(gè)不連續(xù)缺陷時(shí)脂祸，試件上的CFRP提前發(fā)生剝離，剝離荷載下降了20.77%迅涯，導(dǎo)致試件的破壞模式發(fā)生改變琳达，雖然極限荷載僅降低2.46%，但撓度降幅高達(dá)15.37%敢辅，延性下降顯著搬处；界面缺陷附近易產(chǎn)生應(yīng)力集中，促使多裂縫均衡發(fā)展而猾，導(dǎo)致裂縫間距減醒诎濉；界面缺陷影響CFRP剝離起始發(fā)生位置昆剃，更易引起CFRP沿試件寬度方向貫穿剝離蛙旷。 Abstract: In order to study the interface defects on the flexural behavior of RC beams strengthened with CFRP, 3 comparative specimens were made and four-point bending tests were conducted. At the same time, a nonlinear finite element model was established by using ABAQUS software, and the numerical analysis was conducted. The results show that when there are multiple interface defects in the specimens, the CFRP debonding occurs in advance and the debonding load decreases by 20.77%, which leads to a change in the failure mode of the specimens. Although the ultimate load decreases by only 2.46%, the deflection decreases by 15.37% and the ductility decreases significantly. Stress concentration is easy to occur near the interface defects, forming the balanced development of multiple cracks, resulting in the reduction of crack spacing. The interface defect affects the initial location of CFRP stripping, which is more likely to cause CFRP stripping along the width direction to form penetration.

談峰玲,蔣宇杰,周浩,等.界面缺陷對(duì)CFRP加固鋼筋混凝土梁抗彎性能的影響研究[J].混凝土與水泥制品,2024(7):70-75. TAN F L,JIANG Y J,ZHOU H,et al.Study on the effect of interface defects on the flexural behavior of RC beams strengthened with CFRP[J].China Concrete and Cement Products,2024(7):70-75.

軸壓荷載下裝配式SCCT剪力墻鋼板屈曲行為研究

龐瑞，張健*霜舔，王興明品智，衛(wèi)聰聰

2024年第7期

摘要

引用本文

摘 ?要：為探究裝配式SCCT剪力墻鋼板屈曲機(jī)制及鋼板屈曲對(duì)墻體軸壓承載性能的影響，建立了考慮鋼材初始缺陷的裝配式SCCT剪力墻非線(xiàn)性數(shù)值分析模型嘉杯，對(duì)模型受力機(jī)理及鋼板臨界屈曲應(yīng)力進(jìn)行了分析棺禽，并根據(jù)參數(shù)分析結(jié)果提出了鋼板臨界屈曲應(yīng)力計(jì)算方法。結(jié)果表明：墻體承載力主要由管內(nèi)混凝土承擔(dān)戒桐，各部件間協(xié)同工作工啊，應(yīng)力及變形傳遞性能良好；當(dāng)管外混凝土厚度大于20 mm蟹益、鋼材初始缺陷低于1/1 000時(shí)蘑改，二者對(duì)鋼板臨界屈曲應(yīng)力影響可忽略不計(jì)；對(duì)于Q235和Q355常用鋼父骋，要求鋼板不發(fā)生彈性屈曲的距厚比限值分別為44.9唯榴、36.6。 Abstract: In order to explore the buckling mechanism of steel plates in prefabricated SCCT shear walls and its impact on the axial compression bearing performance of the structure, nonlinear numerical analysis models of SCCT shear walls were established considering initial defects of steel plates. The force mechanism of the model and the critical buckling stress of the steel plate were analyzed, and a calculation method for the critical buckling stress of steel plates in SCCT shear walls was proposed based on parameter analysis. The results show that the bearing capacity of the wall is mainly borne by the concrete inside the steel tube, and the components of the wall work together, with good stress and deformation transmission performance. When the thickness of the concrete outside the steel tube is greater than 20 mm and the initial defect of the steel plate is less than 1/1 000, the influence of both on the critical buckling stress of the steel plate can be ignored. For commonly used steel Q235 and Q355, the distance-thickness ratio limits that require the steel plate to not undergo elastic buckling are 44.9 and 36.6 respectively.

龐瑞,張健,王興明,等.軸壓荷載下裝配式SCCT剪力墻鋼板屈曲行為研究[J].混凝土與水泥制品,2024(7):76-82. PANG R,ZHANG J,WANG X M,et al.Research on buckling behavior of steel plate in prefabricated SCCT shear wall underaxial compression load[J].China Concrete and Cement Products,2024(7):76-82.

標(biāo)準(zhǔn)解讀

JC/T 2723—2022《預(yù)應(yīng)力混凝土實(shí)心方樁》標(biāo)準(zhǔn)解讀

蔣元海

2023年第4期

摘要

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為便于 JC/T 2723—2022《預(yù)應(yīng)力混凝土實(shí)心方樁》的使用方準(zhǔn)確理解標(biāo)準(zhǔn)條款的具體含義各华，正確貫徹實(shí)施標(biāo)準(zhǔn)條款的具體要求和規(guī)定胁央，簡(jiǎn)述了該標(biāo)準(zhǔn)的編制背景、編制目的和意義叹秃，解釋說(shuō)明了標(biāo)準(zhǔn)條文的具體內(nèi)容臆踩，并指出了標(biāo)準(zhǔn)實(shí)施過(guò)程中應(yīng)注意的事項(xiàng)。 In order to facilitate the user of JC/T 2723—2022 Prestressed Concrete Solid Square Pile to accurately understand the specific meaning of the standard terms and correctly implement the specific requirements and provisions of the standard terms, the preparation background, purpose and significance of the JC/T 2723—2022 are briefly described, the specific contents of the standard provisions are explained in detail, and the problems that should be paid attention to in the implementation process are put forward.

蔣元海.JC/T 2723—2022《預(yù)應(yīng)力混凝土實(shí)心方樁》標(biāo)準(zhǔn)解讀[J].混凝土與水泥制品,2023(4):81-84. JIANG Y H.Interpretation on JC/T 2723—2022 Prestressed Concrete Solid Square Pile[J].China Concrete and Cement Products,2023(4):81-84.

檢測(cè)及試驗(yàn)方法研究

灌漿料測(cè)強(qiáng)曲線(xiàn)對(duì)齡期與抗壓強(qiáng)度的適用性研究

趙建華1总炎，謝慧晟2琢骨，張建宇1，凌良建2叔粒，周紅燕3屑五，呂嘉2

2023年第4期

摘要

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選擇不同灌漿料制作了標(biāo)準(zhǔn)試件和模擬孔道PVC管試件撇累，根據(jù)DB32/T 3754—2020《裝配整體式混凝土結(jié)構(gòu)檢測(cè)技術(shù)規(guī)程》的要求，基于標(biāo)準(zhǔn)試件的抗壓強(qiáng)度和模擬孔道PVC管試件的表面硬度建立了灌漿料測(cè)強(qiáng)曲線(xiàn)邀缨，分析了測(cè)強(qiáng)曲線(xiàn)對(duì)灌漿料齡期和抗壓強(qiáng)度的適用性壶肇。結(jié)果表明：在灌漿料齡期≥14 d或抗壓強(qiáng)度≥60 MPa的情況下，采用DB32/T 3754—2020中的方法建立的灌漿料測(cè)強(qiáng)曲線(xiàn)的適用性更強(qiáng)岸痞，可為實(shí)際工程中不同灌漿料實(shí)體抗壓強(qiáng)度檢測(cè)時(shí)間的選取提供參考抱姬。 Different sleeve grouting materials were selected to make standard test pieces and PVC pipe test pieces with simulated channels. According to the requirements of DB32/T 3754—2020 Technical Specification for Inspection of Monolithic Precast Concrete Structure, the strength curve of the grouting material was established based on the compressive strength of standard test pieces and the surface hardness of PVC pipe test pieces with simulated channels, and the applicability of the strength curve to the age and compressive strength was analyzed. The results show that when the age of grouting material is ≥14 days or the compressive strength of grouting material is ≥60 MPa, the strength test curve of grouting material established by the method in DB32/T 3754—2020 is more applicable, which can provide a reference for the selection of the testing time of the solid compressive strength of different grouting materials in practical projects.

趙建華,謝慧晟,張建宇,等.灌漿料測(cè)強(qiáng)曲線(xiàn)對(duì)齡期與抗壓強(qiáng)度的適用性研究[J].混凝土與水泥制品,2023(4):85-87,92. ZHAO J H,XIE H S,ZHANG J Y,et al.Study on the Applicability of Grouting Material Strength Curve to Age and Compressive Strength[J].China Concrete and Cement Products,2023(4):85-87,92.

節(jié)能降碳

養(yǎng)護(hù)溫度與脫硫石膏摻量對(duì)RPC性能的影響

王旭1，付建鵬1药拥，金冰欣2侄供，朱斌1，武雙磊2嚣队，*绵赚，徐迅3

2024年第7期

摘要

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摘 ? 要：以普通硅酸鹽水泥、脫硫石膏宾潮、礦渣等制備了活性粉末混凝土（RPC）彩不，研究了養(yǎng)護(hù)溫度（20、45狼腕、70 ℃）和脫硫石膏摻量（2%~7%）對(duì)RPC強(qiáng)度和膨脹率的影響警羽，并進(jìn)行了XRD和SEM分析。結(jié)果表明：當(dāng)養(yǎng)護(hù)溫度為20 ℃時(shí)碾兆，隨著脫硫石膏摻量的增加治狙，試件的28 d抗折與抗壓強(qiáng)度均先增大后減小锯习；當(dāng)養(yǎng)護(hù)溫度為45 ℃時(shí)哄兆，隨著脫硫石膏摻量的增加，試件的28 d抗折強(qiáng)度增大电诀，28 d抗壓強(qiáng)度先增大后減小鳞诵；當(dāng)養(yǎng)護(hù)溫度為70 ℃時(shí)癸丘，試件的28 d抗折與抗壓強(qiáng)度均增大；當(dāng)脫硫石膏摻量相同時(shí)袭芬，隨著養(yǎng)護(hù)溫度的提高棺门，試件的28 d抗折與抗壓強(qiáng)度基本呈增大趨勢(shì)；脫硫石膏摻量越高现善，試件的膨脹率越大硼励；養(yǎng)護(hù)溫度越高，試件趨于穩(wěn)定時(shí)的膨脹率越低恬磅；在RPC中摻入適量石膏哑软，并輔以適宜的養(yǎng)護(hù)溫度伞龟，可有效加快水泥和礦渣的水化進(jìn)程，生成鈣礬石疲噬，進(jìn)而改善RPC的強(qiáng)度和膨脹性能是疮。 Abstract: Reactive powder concrete(RPC) ?was prepared by using ordinary Portland cement, desulfurization gypsum, slag, etc. The effects of curing temperature (20, 45, 70 ℃) and desulfurization gypsum content (2%~7%) on the strength and expansion rate of RPC were studied, and XRD and SEM analysis were conducted. The results show that when the curing temperature is 20 ℃, with the increase of desulfurization gypsum content, the 28 d flexural strength and compressive strength of the specimen first increase and then decrease. When the curing temperature is 45 ℃, with the increase of desulfurization gypsum content, the 28 d flexural strength of the specimen increases and the 28 d compressive strength first increases and then decreases. When the curing temperature is 70 ℃, the 28 d flexural strength and compressive strength of the specimen increase. When the content of desulfurization gypsum is the same, with the increase of curing temperature, the 28 d flexural strength and compressive strength of the specimen basically show an increasing trend. The higher the content of desulfurization gypsum, the greater the expansion rate of the specimen. The higher the curing temperature, the lower the expansion rate of the specimen when it tends to stabilize. Adding an appropriate content of gypsum to RPC, accompanied by an appropriate curing temperature can effectively promote the hydration process of cement and slag, generate ettringite, and improve the strength and expansion properties of RPC.

王旭,付建鵬,金冰欣,等.養(yǎng)護(hù)溫度與脫硫石膏摻量對(duì)RPC性能的影響[J].混凝土與水泥制品,2024(7):83-88. WANG X,FU J P,JIN B X,et al.Effect of curing temperature and desulfurization gypsum content on performance of RPC[J].China Concrete and Cement Products,2024(7):83-88.

低碳復(fù)合膠凝材料對(duì)水泥和混凝土性能的影響

劉遠(yuǎn)祥1疗喧，楊婷麗1崩睹，張華獻(xiàn)2疥莱，孫亞民3棺坡，曹鑫鋮1脓石，葉國(guó)林1峨褪，宋秋磊1

2024年第7期

摘要

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摘 ? 要：將粉煤灰和礦粉按不同質(zhì)量比（m粉煤灰∶m礦粉=7∶3保韩、6∶4顿抄、5∶5）制備成了低碳復(fù)合輔助性膠凝材料垮忍，研究了其等質(zhì)量替代15%砚彤、30%的水泥對(duì)膠凝材料需水量比、流動(dòng)度比和活性指數(shù)的影響澡藐，優(yōu)選出了最佳m粉煤灰∶m礦粉批沙。在此基礎(chǔ)上，研究了低碳復(fù)合輔助性膠凝材料等質(zhì)量替代0踊柔、10%烂碟、15%、20%慧晃、30%的水泥對(duì)膠凝材料標(biāo)準(zhǔn)稠度用水量和凝結(jié)時(shí)間的影響虐叫，以及等質(zhì)量替代0、10%禁桃、20%撒恤、30%、40%的水泥對(duì)C50混凝土工作性和力學(xué)性能的影響替幕。結(jié)果表明：在水泥中摻入適量低碳復(fù)合輔助性膠凝材料有效改善了膠凝材料體系的工作性草化，延緩了早期（3 d）水化速度，提高了膠砂7 d魔蜂、28 d抗壓強(qiáng)度烂勒，最佳m粉煤灰∶m礦粉為5∶5；隨著低碳復(fù)合輔助性膠凝材料摻量的增加垄各，膠凝材料的標(biāo)準(zhǔn)稠度用水量變化很小刃摊，凝結(jié)時(shí)間延長(zhǎng)；C50混凝土的坍落度隨著低碳復(fù)合輔助性膠凝材料摻量的增加而增大绣扎，7 d和28 d抗壓強(qiáng)度先增大后減小龟藻，最佳摻量為30%。 Abstract: Low-carbon composite auxiliary cementitious materials were prepared by using fly ash and mineral powder in different mass ratios (mfly ash ∶ mmineral powder =7:3, 6:4, 5:5), and the effects of replacing 15% and 30% of cement with equal mass ratios on the water demand ratio, flowability ratio, and activity index of the cementitious materials were studied, and the optimal mfly ash ∶ mmineral powder was selected. On this basis, the influence of replacing 0, 10%, 15%, 20%, and 30% of cement with low-carbon composite auxiliary cementitious materials on the standard consistency water consumption and setting time of cementitious materials was studied, and the effects of replacing 0, 10%, 20%, 30%, and 40% of cement on the workability and mechanical properties of C50 concrete were studied. The results show that adding an appropriate content of low-carbon composite auxiliary cementitious materials to cement effectively improves the workability of the cementitious materials system, delays the early (3 d) hydration rate, and increases the compressive strength of the mortar at 7 d and 28 d, and the optimal mfly ash ∶ mmineral powder is 5:5. With the increase of low-carbon composite auxiliary cementitious materials content, the standard consistency water consumption of cementitious materials changes very little, and the setting time is extended. With the increase of low-carbon composite auxiliary cementitious materials content, the slump of C50 concrete gradually increases, and the compressive strength at 7 d and 28 d first increases and then decreases, and the optimal content is 30%.

磷石膏摻量對(duì)鋼管混凝土力學(xué)性能的影響

溫永欽，李嘉

2024年第7期

摘要

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摘 ? 要：通過(guò)正交試驗(yàn)研究了粉煤灰摻量（10%钠峙、15%植气、20%、25%）醉摇、礦粉摻量（15%嵌冶、20%、25%原彰、30%）暇牌、磷石膏摻量（0、2%是耍、4%委震、6%）對(duì)混凝土抗壓強(qiáng)度的影響，優(yōu)選出了最佳摻量耐昌，在此基礎(chǔ)上啄捂，研究了磷石膏摻量（0、2%扰哨、4%早艾、6%）對(duì)鋼管混凝土軸壓性能的影響。結(jié)果表明：當(dāng)粉煤灰妓耙、礦粉厩酗、磷石膏的摻量分別為10%、20%售营、2%時(shí)隙译，混凝土的28 d抗壓強(qiáng)度最大；隨著磷石膏摻量的增加狸魁，鋼管混凝土試件的極限承載力先增大后減小予弊，最佳摻量為2%，此時(shí)甄寐，鋼管混凝土試件受壓破壞后的橫向變形不明顯桥郡。 Abstract: The effects of fly ash content (10%, 15%, 20%, 25%), mineral powder content (15%, 20%, 25%, 30%), and phosphogypsum content (0, 2%, 4%, 6%) on the compressive strength of concrete were studied through orthogonal experiments, and the optimal content was selected. On this basis, the influence of phosphogypsum content (0, 2%, 4%, 6%) on the axial compression performance of concrete filled steel tube was studied. The results show that when the content of fly ash, mineral powder, and phosphogypsum is 10%, 20%, and 2% respectively, the 28 d compressive strength of concrete is the highest. With the increase of phosphogypsum content, the ultimate bearing capacity of concrete filled steel tube specimen first increases and then decreases, and the optimal content is 2%. Besides, the lateral deformation of concrete filled steel tube specimen after compression failure is not significant.

溫永欽,李嘉.磷石膏摻量對(duì)鋼管混凝土力學(xué)性能的影響[J].混凝土與水泥制品,2024(7):94-102. WEN Y Q,LI J.Effect of phosphogypsum content on mechanical properties of concrete filled steel tube[J].China Concrete and Cement Products,2024(7):94-97,102.

有色冶煉二次尾渣制備水泥熟料的研究

徐瑞鋒

2024年第7期

摘要

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摘 ? 要：將有色冶煉固廢提取稀散金屬后產(chǎn)生的二次尾渣（以下簡(jiǎn)稱(chēng)尾渣）作為鐵質(zhì)原料燒制水泥熟料，研究了煅燒溫度（1 350寓板、1 400沤郝、1 450 ℃）和鋁率（1.1、1.3铣鞠、1.5、1.7）對(duì)生料易燒性和熟料物相組成的影響尘怎，并優(yōu)選出最佳煅燒溫度和鋁率铆纽。在此基礎(chǔ)上，對(duì)比分析了尾渣和鐵粉對(duì)水泥各項(xiàng)性能的影響蠢党，并通過(guò)Krustulovic-Dabica水化動(dòng)力學(xué)模型分析了水泥的水化進(jìn)程酌猴。結(jié)果表明：尾渣對(duì)水泥生料煅燒有一定的礦化作用现吟，最佳煅燒溫度和鋁率分別為1 400 ℃和1.1；用尾渣作為鐵質(zhì)原料制備的水泥符合GB 175—2023《通用硅酸鹽水泥》中P·Ⅰ42.5級(jí)水泥的相關(guān)要求使皆；與鐵粉相比姆霓，用尾渣作為鐵質(zhì)原料制備的水泥礦物成分較多，結(jié)晶成核和晶體增長(zhǎng)階段的反應(yīng)程度更高抹毙，水化放熱量較大膳荔，水化反應(yīng)速率更快，相邊界反應(yīng)階段的反應(yīng)時(shí)間較短栖亲。 Abstract: The secondary tailings slag (hereinafter referred to as tailing slag) produced after the extraction of dilute metals from non-ferrous smelting solid waste was used as iron raw material to burn cement clinker, and the effects of calcination temperature (1 350, 1 400, 1 450 ℃) and aluminum rate (1.1, 1.3, 1.5, 1.7) on the burnability of raw material and the composition of clinker were studied, and the optimal calcination temperature and aluminum rate were selected. On this basis, the effects of tailings slag and iron powder on various properties of cement were analyzed comparatively, and the hydration process of cement was analyzed by using Krustulovic-Dabica hydration kinetic model. The results show that tailings slag has certain mineralization effect on the calcination of cement raw materials, and the optimal calcination temperature and aluminum rate are 1 400 ℃ and 1.1, respectively. The cement prepared by using tailings slag as iron raw material meets the relevant requirements of P·Ⅰ42.5 grade cement in GB 175—2023 Common Portland Cement. Compared with iron powder, the clinker prepared by using tailings slag as iron raw material has higher mineral composition, higher degree of reaction in the stages of crystallization nucleation and crystal growth, higher hydration heat release and hydration reaction rate, and shorter reaction time in the stage of phase boundary reaction.

徐瑞鋒.有色冶煉二次尾渣制備水泥熟料的研究[J].混凝土與水泥制品,2024(7):98-102. XU R F.Study on preparation of cement clinker from secondary tailings slag from non-ferrous smelting[J].China Concrete and Cement Products,2024(7):98-102.

水玻璃活化黃河泥沙對(duì)再生骨料透水混凝土性能的影響

李驍男咕固，辛?xí)员?，馬炎捍栖，張茂亮饰霹，李建偉

2024年第7期

摘要

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摘 ? 要：采用不同模數(shù)（1.3、1.8篡惰、2.3岸炭、2.8、3.3）的水玻璃對(duì)黃河泥沙進(jìn)行了活化處理排思，并制備了再生骨料透水混凝土晒遍，研究了水玻璃模數(shù)對(duì)黃河泥沙活性和再生骨料透水混凝土性能的影響。結(jié)果表明：水玻璃能明顯提高黃河泥沙的活性闪陨，當(dāng)水玻璃模數(shù)為2.3時(shí)挑未，黃河泥沙的28 d活性指數(shù)達(dá)到最大，為65%先岗；隨著水玻璃模數(shù)從1.3逐漸增加至3.3搀乾，黃河泥沙中的Al3+活性率逐漸降低；與未活化黃河泥沙相比慕涧，采用活化黃河泥沙制備的再生骨料透水混凝土的抗壓強(qiáng)度提高峡印，耐流水侵蝕系數(shù)增大。 Abstract: Different modulus of sodium silicate(1.3, 1.8, 2.3, 2.8, 3.3) was used to activate the Yellow River sediment, and the recycled aggregate pervious concrete was prepared. The influence of sodium silicate modulus on the activity of Yellow River sediment and the performance of recycled aggregate pervious concrete was studied. The results show that sodium silicate can significantly improve the activity of Yellow River sediment. When the modulus of sodium silicate is 2.3, the 28 d activity index of Yellow River sediment reaches its maximum, which is 65%. As the modulus of sodium silicate gradually increases from 1.3 to 3.3, the activity rate of Al3+ in the Yellow River sediment gradually decreases. Compared with non activated Yellow River sediment, the compressive strength of recycled aggregate pervious concrete prepared by activated Yellow River sediment is improved, and the coefficient of resistance to water erosion is increased.

李驍男,辛?xí)员?馬炎,等.水玻璃活化黃河泥沙對(duì)再生骨料透水混凝土性能的影響[J].混凝土與水泥制品,2024(7):103-106. LI X N,XIN X B,MA Y,et al.Effect of sodium silicate activated Yellow River sediment on the performance of recycled aggregate pervious concrete[J].China Concrete and Cement Products,2024(7):103-106.

再生微粉對(duì)混凝土抗氯離子滲透性能的影響

徐秀華

2024年第7期

摘要

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摘 ? 要：研究了分別單摻與復(fù)摻再生混凝土粉（RCP）悍慢、再生磚粉（RBP）對(duì)混凝土抗氯離子滲透性能的影響癣烁，并建立了氯離子擴(kuò)散系數(shù)和電通量之間的關(guān)系式。結(jié)果表明：?jiǎn)螕絉CP或RBP時(shí)圈鲁，隨著其摻量從0增至30%诡朝，試件的電通量和氯離子擴(kuò)散系數(shù)均先減小后增大，說(shuō)明抗氯離子滲透性能先增強(qiáng)后減弱舷酵，RCP和RBP的最佳摻量均為10%蹲阅；復(fù)摻RCP和RBP時(shí)，隨著RBP占比的增加，試件的電通量和氯離子擴(kuò)散系數(shù)均先減小后增大佃彻，最佳mRBP∶mRCP為1∶1轮搽；摻再生微粉混凝土的氯離子擴(kuò)散系數(shù)和電通量之間具有良好的線(xiàn)性關(guān)系。 Abstract: The effects of single and compound addition of recycled concrete powder(RCP) and recycled brick powder(RBP) on the chloride ion penetration resistance of concrete were studied, and the relationship between chloride ion diffusion coefficient and electrical flux was established. The results show that when RCP or RBP is added alone, as its content increases from 0 to 30%, the electrical flux and chloride ion diffusion coefficient of the specimen first decrease and then increase, indicating that the chloride ion penetration resistance first enhances and then weakens, and the optimal content of RCP and RBP is both 10%. When adding RCP and RBP together, as the proportion of RBP increases, the electrical flux and chloride ion diffusion coefficient of the specimen first decrease and then increase, and the optimal mRBP∶mRCP is 1∶1. There is a good linear relationship between the chloride ion diffusion coefficient and electrical flux of concrete with recycled micro powder.

徐秀華.再生微粉對(duì)混凝土抗氯離子滲透性能的影響[J].混凝土與水泥制品,2024(7):107-110,115. XU X H.Effect of recycled micro powder on chloride ion penetration resistance of concrete[J].China Concrete and Cement Products,2024(7):107-110,115.

解毒飛灰資源化用于混凝土實(shí)心磚的研究

倪亞玲1沈泛，崔敬軒1适耶，楊高強(qiáng)2，趙春祥2哎镁，郭勝男1般苇，聶卿1，*

2024年第7期

摘要

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摘 ? 要：對(duì)城市生活垃圾焚燒飛灰（以下簡(jiǎn)稱(chēng)飛灰）進(jìn)行解毒無(wú)害化處理昆纤，研究了解毒飛灰等質(zhì)量取代0智第、20%、30%纵算、50%身锦、100%的礦粉對(duì)混凝土實(shí)心磚抗壓強(qiáng)度、吸水率抡丢、耐久性能酶馒、放射性、重金屬浸出濃度的影響筐压。結(jié)果表明：經(jīng)過(guò)解毒處理后的飛灰重金屬含量顯著降低隆脯；總體上，解毒飛灰的摻入使混凝土實(shí)心磚的抗壓強(qiáng)度和耐久性能降低贞历，吸水率纤经、放射性和重金屬浸出濃度增大；結(jié)合相關(guān)標(biāo)準(zhǔn)對(duì)混凝土實(shí)心磚的性能要求驰铭，推薦解毒飛灰的摻量為30%撼堤。 Abstract: The detoxification treatment of municipal solid waste incineration fly ash (hereinafter referred to as fly ash) was conducted, and the effects of replacing 0, 20%, 30%, 50% and 100% mineral powder with detoxified fly ash on the compressive strength, water absorption, durability, radioactivity and heavy metal leaching concentration of solid concrete brick were studied. The results show that the heavy metal content in fly ash significantly decreases after detoxification treatment. Overall, the addition of detoxified fly ash reduces the compressive strength and durability of solid concrete brick, while increases water absorption, radioactivity and heavy metal leaching concentration. Based on the performance requirements of relevant standards for solid concrete brick, it is recommended to add 30% content of detoxicated fly ash.

倪亞玲,崔敬軒,楊高強(qiáng),等.解毒飛灰資源化用于混凝土實(shí)心磚的研究[J].混凝土與水泥制品,2024(7):111-115. NI Y L,CUI J X,YANG G Q,et al.Research on the resource utilization of detoxified fly ash for solid concrete brick[J].China Concrete and Cement Products,2024(7):111-115.

粉煤灰基耐火材料的制備及性能研究

張倩

2024年第7期

摘要

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摘 ? 要：將粉煤灰、煤矸石蛹絮、鋁灰按一定比例制備了粉煤灰基耐火材料倪拾，研究了m粉煤灰∶m煤矸石∶m鋁灰和燒結(jié)溫度（800、1 000电痰、1 200 ℃）對(duì)粉煤灰基耐火材料力學(xué)性能和耐火性能的影響业掠，并進(jìn)行了微觀(guān)形貌分析杏猜。結(jié)果表明：隨著燒結(jié)溫度的升高烘器，試樣的顯氣孔率荒元、體積變化率減小，體積密度喘柔、耐壓強(qiáng)度代询、抗折強(qiáng)度和耐火度增大做菠；當(dāng)m粉煤灰∶m煤矸石∶m鋁灰=7∶1∶2時(shí)，試樣的力學(xué)性能和耐火性能均最好挟淑；適當(dāng)提高燒結(jié)溫度和增加鋁灰摻量均有助于提高試樣的微觀(guān)結(jié)構(gòu)密實(shí)度。 Abstract: Fly ash based refractories were prepared with a certain proportion of fly ash, coal gangue, and aluminium ash, and the effects of mfly ash∶mcoal gangue∶maluminum ash and sintering temperatures (800, 1 000, 1 200 ℃) on the mechanical and refractory properties of fly ash based refractories were investigated. In addition, the microscopic morphology analysis was carried out. The results show that with the increase of sintering temperature, the apparent porosity and volume change rate of the specimen decrease, and the bulk density, compressive strength, flexural strength and refractoriness increase. When mfly ash∶mcoal gangue∶maluminum ash is 7∶1∶2, the specimen has the best mechanical and refractory properties. Appropriately increasing the sintering temperature and increasing the dosage of aluminium ash can increase the microstructural compactness of specimens.

張倩.粉煤灰基耐火材料的制備及性能研究[J].混凝土與水泥制品,2024(7):111-119. ZHANG Q.Study on properties of fly ash based refractories[J].China Concrete and Cement Products,2024(7):111-119.

讀者之友

《混凝土與水泥制品》“3D打印混凝土”與“節(jié)能利廢混凝土”專(zhuān)題征稿啟事

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請(qǐng)點(diǎn)擊此處或通過(guò)高級(jí)檢索查找1981~2004年期刊論文

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珊瑚碎屑混凝土的強(qiáng)度特性及破壞形態(tài)分析

王磊1,2唬洁，范蕾1,2

2015年第1期

摘要

引用本文

摘 ? 要：針對(duì)目前對(duì)珊瑚碎屑混凝土的力學(xué)機(jī)理尚不清晰這一問(wèn)題片叛，對(duì)不同齡期和水灰比的珊瑚混凝土試塊進(jìn)行了試驗(yàn)研究。試驗(yàn)結(jié)果表明锡蒲，珊瑚混凝土具有早強(qiáng)郡啮、快硬的特點(diǎn)；同時(shí)孩泰，當(dāng)水灰比減小到一定程度后令尧，單純減小水灰比并不能明顯提高珊瑚混凝土的抗壓強(qiáng)度。本文從材料特性桐就、界面特性以及齡期和水灰比等方面著手博洁，對(duì)珊瑚混凝土的強(qiáng)度特性作了詳細(xì)分析，并介紹了珊瑚混凝土的破壞形態(tài)杖常，從而可為珊瑚碎屑應(yīng)用于海島混凝土工程提供一定的參考依據(jù)塘炯。 Abstract: Currently, the mechanical mechanism of coral debris concrete is not well understood, so the research on coral concrete test block in different age and water cement ratio is carried out. The test results show that coral concrete has the characteristics of fast strengthening and hardening, and when the water cement ratio decreases to a certain extent, simply reducing the water cement ratio could not result in obvious additions of compressive strength of coral concrete. From the aspects of material properties, interface properties，age and water cement ratio, the strength characteristics of the coral concrete are analyzed in detail, and the failure pattern is introduced, which can provide reference for application of coral debris in island concrete engineering.

王磊,范蕾.?珊瑚碎屑混凝土的強(qiáng)度特性及破壞形態(tài)分析[J].混凝土與水泥制品,2015(1):1-4. WANG L,FAN L.Strength Characteristic and Failure Pattern Analysis on Coral Debris Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(1):1-4.

裝配式結(jié)構(gòu)用高強(qiáng)套筒灌漿料性能試驗(yàn)研究

汪秀石幼抗，楊智良脐姑，吳照學(xué)

2015年第2期

摘要

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摘 ? 要：研究了裝配式結(jié)構(gòu)用高強(qiáng)套筒灌漿料的性能，通過(guò)試配并進(jìn)行了流動(dòng)度靛慈、強(qiáng)度和膨脹性試驗(yàn)蚕乞，優(yōu)選出了優(yōu)化配合比。同時(shí)基于優(yōu)化配合比進(jìn)行了水膠比摘灰、減水劑摻量和膨脹劑摻量對(duì)高強(qiáng)套筒灌漿料性能影響的研究寥莱。試驗(yàn)結(jié)果表明，隨著水膠比（W/B）增加甩该，流動(dòng)度逐漸增大能慎，但強(qiáng)度隨W/B增加呈現(xiàn)明顯降低趨勢(shì)；減水劑可有效改善流動(dòng)度伐邪，而當(dāng)摻量過(guò)多時(shí)對(duì)強(qiáng)度有一定的影響嘶裔；膨脹率隨膨脹劑摻量增加呈現(xiàn)增長(zhǎng)趨勢(shì)，但當(dāng)摻量小于8.0%時(shí)伸克，膨脹效果較差谗馆，摻量大于12.0%時(shí)，對(duì)流動(dòng)度和強(qiáng)度產(chǎn)生不利影響术麓。 Abstract: The properties of high-strong cementitious grout for prefabricated concrete structure are studied, and the optimum mix proportion is elected by the tests of fluidity, strength and expansibility. The roles of W/B and the content of superplasticizer or expanders in high-strong cementitious grout for coupler are researched respectively based on the optimum mix proportion. The test results show that the fluidity of the grout increases with the increasing of W/B, but its strength has significantly decreasing trend; the fluidity of the grout can be improved effectively by superplasticizer, but its strength will decrease if superplasticizer content is excessive; expansion rate of the grout increases with the increasing of expanders agent content, but the expansibility is poor when the content is less than 8.0%, and it has an adversely affect on the liquidity and strength of the grout when the content is greater than 12.0%.

汪秀石,楊智良,吳照學(xué).裝配式結(jié)構(gòu)用高強(qiáng)套筒灌漿料性能試驗(yàn)研究[J].混凝土與水泥制品,,2015(2):65-68. WANG X S,YANG Z L,WU Z X.Experimental Research on Performance of High-strong Cementitious Grouting for Prefabricated Concrete Structure[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(2):65-68.

再生粗骨料強(qiáng)化處理工藝對(duì)再生混凝土性能的影響

郭遠(yuǎn)新霜厅，李秋義樊浊，孔哲，岳公冰氟迸，韓帥

2015年第6期

摘要

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摘 ? 要：分別采用物理強(qiáng)化蝶资、化學(xué)強(qiáng)化和物理-化學(xué)復(fù)合強(qiáng)化三種不同的強(qiáng)化方式對(duì)簡(jiǎn)單破碎再生粗骨料進(jìn)行強(qiáng)化處理，并采用100%取代天然碎石制備再生粗骨料混凝土婚叫，研究了不同強(qiáng)化處理后的再生粗骨料對(duì)混凝土工作性能福苫、力學(xué)性能、抗?jié)B透性能和抗碳化性能的影響授欢。結(jié)果表明茫填，經(jīng)過(guò)強(qiáng)化處理的再生粗骨料混凝土的各項(xiàng)性能均有不同程度的提高，其中經(jīng)二次物理強(qiáng)化處理后的再生粗骨料混凝土的用水量較天然碎石混凝土僅增加了6kg/m3笑碴，其抗壓強(qiáng)度也達(dá)到最高值棠苫，接近于天然碎石混凝土；經(jīng)二次物理強(qiáng)化和化學(xué)浸漬復(fù)合強(qiáng)化處理后的再生混凝土氯離子擴(kuò)散系數(shù)降低了13.6%毒患；三種不同的強(qiáng)化方式處理后锚岩，再生混凝土的碳化深度和碳化速度均有所降低。 Abstract: Three kinds of different strengthening technologies of physical enhancement, chemical enhancement and physical-chemical compound enhancement to strengthen the simple crushing recycled coarse aggregate are adopted, with 100% replaced natural gravel preparation of recycled coarse aggregate concrete, and the influences of the recycled coarse aggregate of different strengthening treatment on the working performance, mechanical properties, penetration resistance and carbonation resistance of concrete are studied. The research results show that, through strengthening treatment, recycled coarse aggregate concrete properties are improved to different degrees, the water consumption of recycled coarse aggregate concrete after the secondary physical strengthen treatment is only increased by 6kg/m3 than that of natural gravel concrete. The compressive strength also reached the highest value, close to the natural gravel concrete. The chloride ion diffusion coefficient of recycled concrete after the secondary physical-chemical compound strengthening treatment is reduced by 13.6%. The depth of carbonation and carbonation velocity decrease after three kinds of different strengthening treatments.

郭遠(yuǎn)新,李秋義,孔哲,等.再生粗骨料強(qiáng)化處理工藝對(duì)再生混凝土性能的影響[J].混凝土與水泥制品,2015(6):11-17. GUO Y X,LI Q Y,KONG Z,et al.Influence of Strengthening Treatment Technology of Recycled Coarse Aggregate on Performance of Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(6):11-17.

無(wú)砂再生透水混凝土配合比設(shè)計(jì)

張松濤1吭颊，賈欣悅2笨啤，宋卓1，賈艷東1

2016年第12期

摘要

引用本文

張松濤,賈欣悅,宋卓,等.無(wú)砂再生透水混凝土配合比設(shè)計(jì)[J].混凝土與水泥制品,2016(12):6-12. ZHANG S T,JIA X Y,SONG Z,et al.Design on Mix Proportion of No-fines Pervious Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2016(12):6-12.

清水混凝土概念、研究現(xiàn)狀抛溪、存在問(wèn)題及配合比設(shè)計(jì)方綜述

清水混凝土概念谱窖、研究現(xiàn)狀、存在問(wèn)題及配合比設(shè)計(jì)方綜述

郭偉1幌巍，路林海2尼进，王龍志3，崔鑫3佐剥，王桂玲4甥续，張海霞3

2016年第10期

摘要

引用本文

摘 ? 要：20世紀(jì)90年代后期以來(lái)，清水混凝土研究及工程應(yīng)用得到了長(zhǎng)足發(fā)展临硕，許多城市建成了清水混凝土標(biāo)志性工程伪凤。為了更好地促進(jìn)清水混凝土研究的深入、工程質(zhì)量的提高乎惹，對(duì)清水混凝土的概念陪廖、研究現(xiàn)狀、存在問(wèn)題及現(xiàn)有的清水混凝土配合比設(shè)計(jì)方法進(jìn)行了系統(tǒng)地梳理络结、總結(jié)彝估。通過(guò)對(duì)清水混凝土現(xiàn)狀的研究冠刀，可使相關(guān)領(lǐng)域技術(shù)人員認(rèn)識(shí)到清水混凝土發(fā)展中存在的不足、明確清水混凝土的研究方向拜箕，以實(shí)現(xiàn)清水混凝土技術(shù)研究水平的再提高艾狈，有力地支持清水混凝土工程應(yīng)用的進(jìn)一步推廣。 Abstract: Since the late 1990s, research and application of fair-faced concrete has made considerable progress, many cities built landmark projects of fair-faced concrete. In order to better promote the study in-depth and the engineering quality improvement of fair-faced concrete, the concept, research status, existing problems and mixture design methods of fair-faced concrete are systematically reviewed and summarized. Through the above study of fair-faced concrete, the relevant technicians recognize the lack of fair-faced concrete in the development and realize a clear research direction, in order to improve research level, strongly support further promotion of fair-faced concrete in engineering applications.

郭偉,路林海,王龍志,等.清水混凝土概念棺热、研究現(xiàn)狀散造、存在問(wèn)題及配合比設(shè)計(jì)方法綜述[J].混凝土與水泥制品,2016(10):23-27. GUO W,LU L H,WANG L Z,et al.Summary for Concept, Research Status, Existing Problems and Mix Proportion Design of Fair-faced Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2016(10):23-27.

新型裝配式建筑構(gòu)件生產(chǎn)及其施工技術(shù)的研究與應(yīng)用

范玉1,4，徐華2矣私，黃新3，黃繼戰(zhàn)4食茵，馬北京4

2015年第12期

摘要

引用本文

摘 ? 要：通過(guò)對(duì)建筑PC構(gòu)件的設(shè)計(jì)窝狡、生產(chǎn)、施工進(jìn)行的研究矗熔，對(duì)建筑PC構(gòu)件進(jìn)行了再設(shè)計(jì)及優(yōu)化萝掩，確定了合理的PC構(gòu)件生產(chǎn)及其施工工藝方案，并對(duì)影響PC構(gòu)件質(zhì)量的相關(guān)因素進(jìn)行了分析饲哥。 Abstract: Through the research on design of PC component, production and construction, ?construction PC component is carried out for re-design and optimization. The reasonable PC component production and construction technology program are determined, and factors affecting the quality of PC are analyzed.

范玉,徐華,黃新,等.新型裝配式建筑構(gòu)件生產(chǎn)及其施工技術(shù)的研究與應(yīng)用[J].混凝土與水泥制品,2015(12):87-89. FAN Y, XU H,HUANG X,et al.Research and Application of Production for New Type of Prefabricated Construction Component and Its Construction Technology[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(12):87-89.

石墨烯納米片對(duì)水泥基復(fù)合材料力學(xué)性能的影響

王輝啤族，劉愛(ài)紅，李航

2015年第12期

摘要

引用本文

摘 ? 要：采用球磨法將石墨烯納米片分散在水泥基體中搅舅，研究了石墨烯納米片摻量對(duì)水泥基材料抗折強(qiáng)度和抗壓強(qiáng)度的影響伙挠。實(shí)驗(yàn)結(jié)果表明，適量的石墨烯納米片可均勻分散在水泥基體中辐奋，通過(guò)橋聯(lián)效應(yīng)和拔出效應(yīng)對(duì)水泥基材料起增強(qiáng)增韌作用骸履，當(dāng)石墨烯納米片摻量為0.04%時(shí)，石墨烯納米片與水泥基體界面結(jié)合良好传携，沒(méi)有明顯過(guò)渡層矛孟，試件3d抗折強(qiáng)度和抗壓強(qiáng)度分別提高了22.84%和23.61%。 Abstract: Graphene nanoplatelets (GNPs) were dispersed in the cement matrix by milling method. The effect of GNPs with different contents on the flexural strength and compressive strength of composites were studied. The results showed that well dispersed GNPs improved the mechanical properties of cement composites, owing to GNPs excellent pulling-out and bridging capability. When the GNPs content was 0.04%, the mechanical properties of cement composites were increased obviously. Its flexural and compressive strength increased by 22.84% and 23.61% respectively compared with the referee sample after curing 3 days. The interface between graphene nanoplatelets and cement was bonded well, with no obvious transition layer.

王輝,劉愛(ài)紅,李航.石墨烯納米片對(duì)水泥基復(fù)合材料力學(xué)性能的影響[J].混凝土與水泥制品,2015(12):25-27. WANG H,LIU A H,LI H.Influence of Graphene Nanoplatelets on Mechanical Properties of Cement-based Composites[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(12):25-27.

大型智能PC構(gòu)件自動(dòng)化生產(chǎn)線(xiàn)簡(jiǎn)介

孫紅1甸踩，孫健1灌葵，吳玉厚1，趙凱軍2

2015年第3期

摘要

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摘 ? 要：根據(jù)混凝土工廠(chǎng)化生產(chǎn)的需要贬汉，闡述了大型智能PC構(gòu)件生產(chǎn)線(xiàn)的組成部分橙拈、工藝過(guò)程和技術(shù)重點(diǎn)；分析了該生產(chǎn)線(xiàn)中蘊(yùn)含的微觀(guān)物流质汉、信息采集特搐、分布式控制及多智能體的協(xié)同過(guò)程，總結(jié)了PC構(gòu)件生產(chǎn)線(xiàn)的優(yōu)點(diǎn)和技術(shù)創(chuàng)新突破點(diǎn)扣俊，可為大型智能PC構(gòu)件全自動(dòng)生產(chǎn)線(xiàn)的研制提供理論基礎(chǔ)和技術(shù)依據(jù)聊朽。 Abstract: According to the needs of the concrete factory production, the large scale intelligent automatic PC production line the technological process and technical keys of PC component are introduced, the cooperative process of microscopic logistics, information acquisition, distributed control and multi-agent systems are analyzed, the advantages and technology innovation of PC components production line are summarized, which can provide theoretical basis and technical basis for large scale intelligent automatic production line of PC components.

孫紅,孫健,吳玉厚,等.大型智能PC構(gòu)件自動(dòng)化生產(chǎn)線(xiàn)簡(jiǎn)介[J].混凝土與水泥制品,2015(3):45-48. SUN H,SUN J,WU Y H,et al.Introduction of Large Scale Intelligent PC Automatic Production Line[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(3):45-48.

建筑垃圾再生微粉的研究現(xiàn)狀

毛新奇1,2涛霓，屈文俊1，朱鵬1

2015年第8期

摘要

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摘 ? 要：建筑垃圾再生微粉各項(xiàng)性能的研究是推進(jìn)建筑垃圾資源化的重要基礎(chǔ)烽被。根據(jù)近年來(lái)國(guó)內(nèi)關(guān)于再生微粉的主要研究成果何恩，對(duì)材料來(lái)源、制備工藝诊朋、工作性能沦烧、力學(xué)性能和耐久性能等方面進(jìn)行了綜述，并對(duì)相關(guān)的影響因素進(jìn)行了探討分析良磷。 Abstract: Research on the properties of utilization regeneration of powder for construction waste is the important foundation of resource utilization of construction waste. Based on the recent domestic research on recycled powder, material source, manufacturing process, workability, mechanical properties and the durability are reviewed. Besides, the related influence factors are discussed and analyzed.

毛新奇,屈文俊,朱鵬.建筑垃圾再生微粉的研究現(xiàn)狀[J].混凝土與水泥制品,2015(8):89-93. MAO X Q,QU W J,ZHU P.Study Status of Recycled Powder for Construction Waste[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(8):89-93.

再生粗骨料及再生混凝土性能研究進(jìn)展

甘福1柜沼，周脈席1,3，濮琦2

2018年第9期

摘要

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摘 ? 要：結(jié)合國(guó)內(nèi)外再生粗骨料混凝土的研究現(xiàn)狀滴先，綜述了再生粗骨料性能尊浑、再生粗骨料混凝土性能、再生混凝土改性方法及改性后的混凝土性能等方面內(nèi)容汁帖，展望了再生粗骨料及再生混凝土未來(lái)研究方向杏歧。 Abstract: Combining the study of recycled coarse aggregate concrete at home and abroad, the property of recycled coarse aggregate, the performance of recycled coarse aggregate concrete, the modified method of recycled concrete and the performance of modified concrete are reviewed, and the fature research direction on recycled coarse aggregate and recycled concrete is prospected.

甘福,周脈席,濮琦.再生粗骨料及再生混凝土性能研究進(jìn)展[J].混凝土與水泥制品,2018(9):102-107. GAN F,ZHOU M X,PU Q.Research Progress of Performance of Recycled Coarse Aggregate and Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2018(9):102-107.

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