Shear performance of the interfaces for precast concrete shear wall components by novel preparation method

被引：3
|
作者：
Zhu, Zhangfeng [1 ]
Guo, Zhengxing [2 ]
Lu, Hepeng [1 ]
机构：
[1] Nanjing Tech Univ, Coll Civil Engn, Nanjing 211816, Jiangsu, Peoples R China
[2] Southeast Univ, Sch Civil Engn, Nanjing, Jiangsu, Peoples R China
来源：
STRUCTURAL CONCRETE | 2022年 / 23卷 / 02期
关键词：
bubble film; interface; precast concrete; preparation method; shear performance; shear wall; TO-OLD CONCRETE; AGGREGATE CONCRETE; BOND STRENGTH; FRICTION;
D O I：
10.1002/suco.202100504
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
For emulating cast-in-place (CIP) precast concrete (PC) shear wall structures in China, the adjacent PC shear wall components are joined by vertical post-cast concrete. Shear behavior of concrete-to-concrete interfaces is critical for structural integrity. A novel preparation method, as cast using bubble film (BF) form, is proposed. Shear performance experiments are conducted to obtain the shear capacity and deformation characteristic of the specimens by the preparation methods of hydro-demolition (HD), as-cast by patterned steel plate (PSP) form and BF. Concrete strength and shear reinforcement are also considered. By comparison with reference CIP specimens, HD specimens performs best, followed by BF specimens, and the worst are PSP specimens. The collected shear loads for HD and BF specimens are larger than calculated results under diagonal shear failure, assuring structural integrity. Concrete strength and shear reinforcements have effective influence on interface shear capacity. Shear reinforcements with small diameter and small spacing are recommended.
引用
收藏
页码：1036 / 1048
页数：13
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