Fundamental test on creep characteristics of recycled aggregate concrete

被引：4
|
作者：
Fan, Yuhui [1 ,2 ]
Xiao, Jianzhuang [1 ]
Cao, Ming [1 ]
机构：
[1] College of Civil Engineering, Tongji University
[2] School of Civil Engineering, Henan Polytechnic University
来源：
Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2014年 / 44卷 / 03期
关键词：
Cement paste; Creep; Mortar; Predictive model; Recycled aggregate concrete;
D O I：
10.3969/j.issn.1001-0505.2014.03.033
中图分类号：
学科分类号：
摘要：
The fundamental tests on creep and mechanical properties of cement paste were conducted by varying the water cement ratio (w/c). The test results show that both the elastic modulus and compressive strength of cement paste decrease with the increase of w/c. The influence of external environment (temperature and humidity) on the development of cement paste creep is small. Based on the experimental study, the compliance function prediction model of cement paste and mortar is established after investigating the relationship between w/c and the compliance function of the cement paste. The comparison between the predicted and experimental results of mortar with m(cement):m(water):m(fine aggregate)=0.5:1:1.49 shows that the predictive model agrees well with the development of mortar creep. The test results from the modeled recycled concrete prove that the attached old mortar is one of the significant factors for the increase of recycled aggregate concrete creep.
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页码：638 / 642
页数：4
相关论文
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