Bond behaviour of reinforced recycled concrete after rapid freezing-thawing cycles

被引：31
|
作者：
Ren, Guosheng [1 ]
Shang, Huaishuai [1 ,2 ]
Zhang, Peng [1 ,2 ]
Zhao, Tiejun [1 ,2 ]
机构：
[1] Qingdao Univ Technol, Sch Civil Engn, Qingdao 266033, Peoples R China
[2] Qingdao Univ Technol, Cooperat Innovat Ctr Engn Construct & Safety Shan, Qingdao 266033, Peoples R China
来源：
COLD REGIONS SCIENCE AND TECHNOLOGY | 2019年 / 157卷
基金：
中国国家自然科学基金;
关键词：
Recycled concrete; Bond strength; Rapid freezing-thawing cycles; Pull-out test; AGGREGATE CONCRETE; STRENGTH; COMPRESSION; BARS;
D O I：
10.1016/j.coldregions.2018.10.005
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Pull-out test was conducted to investigate the bond behaviour between recycled aggregate concrete and steel bar after rapid freezing-thawing cycles in fresh water and saline water. The test variables were number of freezing-thawing cycles (0, 25, 50 and 75), diameter of steel bar (14, 18 mm) and freezing-thawing medium (fresh water, saline water). According to the test results, the effect of freezing-thawing cycles, diameter of steel bar and freezing-thawing medium on the bond behaviour was analysed. It was found that the bond strength between steel bar and recycled aggregate concrete decreases as the freezing-thawing cycles increased, and after the same number of rapid freezing-thawing cycles, the loss of bond strength in saline water was greater than that in fresh water. Moreover, the loss of compressive strength was greater than the loss of bond strength between steel bar and recycled aggregate concrete after the same number of rapid freezing-thawing cycles in saline water.
引用
收藏
页码：133 / 138
页数：6
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