Strength and deformation of recycled aggregate concrete under triaxial compression

被引：46
作者：
Deng, Zhiheng [1 ]
Wang, Yumei [1 ]
Sheng, Jun [1 ]
Hu, Xu [1 ]
机构：
[1] Guangxi Univ, Coll Civil Engn & Architecture, 100 Univ Rd, Nanning 530004, Guangxi, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 156卷
基金：
中国国家自然科学基金;
关键词：
Recycled aggregate concrete; Triaxial compression; Replacement ratio of recycled coarse aggregate; Stress ratio; Strength; Deformation; 2-STAGE MIXING APPROACH; COARSE AGGREGATE; MECHANICAL-BEHAVIOR; BIAXIAL COMPRESSION; PERFORMANCE; STATES; WASTE;
D O I：
10.1016/j.conbuildmat.2017.08.189
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Experiment was carried out to better understand the behaviors of recycled aggregate concrete under triaxial compressive stresses. The test was performed on 100 mm x 100 mm x 100 mm cubic specimens with five replacement ratios of recycled coarse aggregate (RCA) at four kinds of stress ratios, using a servo-controlled static-dynamic triaxial machine (TAWZ-5000/3000). The failure modes, ultimate strength and deformation under triaxial compression were observed, and the effect of RCA replacement ratio and stress ratio on these characteristics was analyzed. The results show that the triaxial compressive strength of the specimens is much higher than the corresponding uniaxial strength, and the strength and deformation depend on both RCA replacement ratio and stress ratio. Moreover, the factors affecting triaxial strength were quantitatively analyzed by variance calculation. Based on the triaxial strength, the relationship between normalized octahedral normal stress sigma(oct)/f(c) and octahedral shear stress tau(oct)/f(c) with RCA replacement ratio and stress ratio was discussed. (C) 2017 Published by Elsevier Ltd.
引用
收藏
页码：1043 / 1052
页数：10
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