Bond Properties of Deformed Rebar in Frost-Damaged Recycled Coarse Aggregate Concrete under Repeated Loading

被引：14
作者：
Su, Tian [1 ,2 ,3 ]
Huang, Zhanfang [1 ]
Yuan, Jifeng [4 ,5 ]
Zou, Zhenghao [6 ]
Wang, Chunguang [1 ]
Yi, Haihe [1 ]
机构：
[1] Shandong Univ Technol, Sch Civil & Architectural Engn, 266 Xincun West Rd, Zibo 255000, Shandong, Peoples R China
[2] Wuhan Univ, Sch Civil Engn, 8 Donghu South Rd, Wuhan 430072, Hubei, Peoples R China
[3] China Railway 11 Bur Grp Co Ltd, 277 Zhongshan Rd, Wuhan 430061, Hubei, Peoples R China
[4] Nanjing Univ Aeronaut & Astronaut, Dept Civil Engn, 29 Yudao St, Nanjing 210016, Jiangsu, Peoples R China
[5] Nanjing Univ Sci & Technol, Taizhou Inst Sci & Technol, Dept Civil Engn, 8 Meilan East St, Taizhou 225300, Jiangsu, Peoples R China
[6] Yichun Univ, Sch Phys Sci & Engn Technol, 576 Xuefu Rd, Yichun 336000, Jiangxi, Peoples R China
来源：
JOURNAL OF MATERIALS IN CIVIL ENGINEERING | 2022年 / 34卷 / 10期
关键词：
Frost-damage; Recycled coarse aggregate concrete (RAC); Bond properties; Monotonic loading (M-L); Repeated loading (R-L); STEEL BAR; BEHAVIOR; REINFORCEMENT; STRENGTH;
D O I：
10.1061/(ASCE)MT.1943-5533.0004401
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The bond properties of deformed rebar in frost-damaged recycled coarse aggregate concrete (RAC) under repeated loading (R-L) was studied. It is found that the bond failure modes of specimens for R-L is similar to that for monotonic loading (M-L), whereas the crack width for R-L is larger than that for M-L. The bond strength has a tendency to decrease after frost damage, whereas the peak slip has a tendency to increase, whether under R-L or M-L. The bond strength under R-L is lower than that under M-L, whereas the peak slip under R-L is higher than that under M-L. The experimental results of the pullout specimens in water are contrasted with that in salt solution. Through contrasting research, the frost-damage resistance coefficient and the R-L resistance coefficient in salt solution are lower than that in water, whereas the rebar slip in salt solution is higher than that in water. An ultimate bond strength calculation expression of deformed rebar in frost-damaged RAC under R-L is presented.
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页数：10
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