Direct Shear Behavior and Damage Constitutive Model of Recycled Aggregate Concrete at Different Sizes

被引：0
|
作者：
Chen Y. [1 ,2 ]
Liu J. [1 ]
Wu H. [1 ]
Jiang R. [1 ]
Yan F. [1 ]
机构：
[1] College of Civil and Architecture Engineering, Guangxi University of Science and Technology, Liuzhou
[2] Liuzhou Dongfang Engineering Rubber Products Co., Ltd., Liuzhou
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2022年 / 50卷 / 02期
关键词：
Damage constitutive; Direct shear performance; Failure mechanism; Recycled aggregate; Size effect;
D O I：
10.14062/j.issn.0454-5648.20210581
中图分类号：
学科分类号：
摘要：
To investigate the effects of replacement rate and sample size on the direct shear performance and damage of recycled aggregate concrete (RAC), 45 RAC specimens were manufactured. The failure modes of RAC with different sizes were characterized, and the effects of replacement rate and specimen size on the direct shear performance and damage constitutive model of RAC with different sizes were investigated via direct shear tests. The results show that the peak deformation and ductility coefficient have a size effect, the damage development rate of natural concrete becomes slow, and the damage development rate of RAC becomes faster. The peak deformation firstly decreases and then increases, while the ductility coefficient firstly increases and then decreases with the increase of the replacement rate. The damage development law does not have a linear relationship with the replacement rate. The constitutive model can well reflect the shear load-deformation relationship and the damage evolution process of the RAC with different sizes. © 2022, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
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页码：388 / 395
页数：7
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