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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

29卷

期数:

2012年01期

页码:

56-62

栏目:

出版日期:

2012-03-30

文章信息/Info

Title:

Influence of Recycled Aggregate Replacement Ratio on Durability of Recycled Aggregate Concrete

作者:

应敬伟¹,肖建庄^1,2

1. 同济大学 建筑工程系,上海 200092; 2. 同济大学 先进土木工程材料教育部重点实验室,上海 200092

Author(s):

YING Jing-wei¹, XIAO Jian-zhuang^1,2

1. Department of Building Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji University, Shanghai 200092, China

关键词:

再生骨料取代率;  再生混凝土;  耐久性;  氯离子;  抗冻性;  耐磨性;  碳化

Keywords:

recycled aggregate replacement ratio;  recycled aggregate concrete;  durability;  chloride ion;  frost resistance;  abrasive resistance;  carbonation

分类号:

TU528.79

DOI:

-

文献标志码:

A

摘要:

在对大量文献进行研究与对比分析的基础上,总结了近11年来各国再生混凝土耐久性的研究成果,包括再生混凝土抗氯离子渗透性、抗冻性、耐磨性、抗碳化性。通过灰色关联度定量分析了再生混凝土氯离子渗透性影响因素的主次关系。结果表明:再生混凝土的抗氯离子渗透性、抗冻性和耐磨性随再生粗骨料取代率增加而变差,混凝土耐磨性随再生细骨料取代率的增加而变好,大部分混凝土的抗碳化性随再生粗骨料取代率增加而变差,少部分出现变异; 通过灰色关联分析得到的再生混凝土氯离子渗透性影响因素从大到小依次为水灰比、掺合料、混凝土龄期。

Abstract:

Based on the intensive reference investigations, authors reviewed the research achievements on recycled aggregate concrete(RAC)durability in the past 11 years at home and abroad, which including chloride ion permeability, frost resistance, abrasive resistance, and carbonation resistance. Through the gray correlation quantitative analysis, the primary and secondary relations of various factors influencing the chloride ion permeability of RAC were studied. Results show that the chloride ion permeability, frost resistance and abrasive resistance of RAC become worse with the increasing of recycled coarse aggregate replacement ratio. The abrasive resistance of concrete becomes better with the increasing of recycled fine aggregate replacement ratio. However, the carbonization resistance of most concrete become better with the increasing of recycled coarse aggregate replacement ratio, a little of which appear deviation; according to the importance of the influence on the chloride ion permeability of RAC based on gray correlation analysis, the influencing sequence of the impact factors is: water cement ratio, admixture, concrete curing age.

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相似文献/References:

[1]肖建庄,范玉辉,林壮斌.再生细骨料混凝土抗压强度试验[J].建筑科学与工程学报,2011,28(04):26.
　XIAO Jian-zhuang,FAN Yu-hui,LIN Zhuang-bin.Experiment on Compressive Strength of Recycled Fine Aggregate Concrete[J].Journal of Architecture and Civil Engineering,2011,28(01):26.
[2]肖建庄,范玉辉.再生混凝土徐变试验及机理的模型化分析[J].建筑科学与工程学报,2012,29(04):18.
　XIAO Jian-zhuang,FAN Yu-hui.Experiment and Mechanism Modeling Analysis on Creep of Recycled Aggregate Concrete[J].Journal of Architecture and Civil Engineering,2012,29(01):18.
[3]程东辉,王楷文,宋 超.预应力再生混凝土叠合梁受弯性能试验研究[J].建筑科学与工程学报,2022,39(02):52.[doi:10.19815/j.jace.2021.03096]
　CHENG Dong-hui,WANG Kai-wen,SONG Chao.Experimental Study on Flexural Behavior of Prestressed Recycled Concrete Composite Beams[J].Journal of Architecture and Civil Engineering,2022,39(01):52.[doi:10.19815/j.jace.2021.03096]
[4]马士宾,牛宗岳,刘月钊,等.建筑垃圾再生骨料性能强化研究进展[J].建筑科学与工程学报,2022,39(06):1.[doi:10.19815/j.jace.2021.09011]
　MA Shi-bin,NIU Zong-yue,LIU Yue-zhao,et al.Research Progress on Performance Enhancement of Recycled Aggregate from Construction Waste[J].Journal of Architecture and Civil Engineering,2022,39(01):1.[doi:10.19815/j.jace.2021.09011]

备注/Memo

备注/Memo:

收稿日期:2011-10-22
基金项目:国家自然科学基金项目(51178340); 上海市科委项目(10231202000)
作者简介:应敬伟(1983-),男,河南漯河人,工学博士研究生,E-mail:yingjingwei@126.com。

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更新日期/Last Update: 2012-03-20