Resistance and Reliability Analysis of Ceramic Powder Recycled Concrete to Sulfate Dry-Wet Cycle Erosion

被引：0
|
作者：
Qiao H. [1 ,2 ]
Peng K. [1 ]
Chen K. [1 ]
Li J. [1 ]
Guan L. [1 ]
机构：
[1] The Key Laboratory of civil engineering and disaster prevention and disaster prevention and disaster reduction in Gansu province of Lanzhou University of Technology, Lanzhou
[2] Western Center of Disater Mitigation in civil engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou
来源：
Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering | 2021年 / 29卷 / 03期
关键词：
Dry-wet cycle; Mass loss; Recycled concrete with ceramic powder; Relative dynamic modulus of elasticity; Sulfate erosion; Wiener random process;
D O I：
10.16058/j.issn.1005-0930.2021.03.019
中图分类号：
学科分类号：
摘要：
In order to study the ability of recycled concrete with ceramic powder to resist sulfate dry-wet cycles damage, six groups of mix ratios with different replacement rates of ceramic powder and recycled coarse aggregate were designed. The mass loss and relative dynamic modulus of each group of specimens were tested, and the optimal mix ratio was judged. Based on the Wiener degradation process, the reliability model was established and the residual life of the specimens was predicted. The results show that the dynamic modulus of elasticity and mass increase first and then decrease during the dry-wet cycle of sulfate. Ceramic powder replacing part of recycled fine aggregate can effectively improve the sulfate resistance of recycled concrete. The incorporation of recycled coarse aggregate leads to a significant decline in the performance of specimens and has a more significant impact. When the replacement rate of ceramic powder and recycled coarse aggregate is 15% and 0%, the recycled concrete with ceramic powder has the strongest sulfate resistance, and the specimens completely fail after 178 sulfate dry-wet cycles. © 2021, The Editorial Board of Journal of Basic Science and Engineering. All right reserved.
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页码：752 / 760
页数：8
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