Experimental Research on Compression-Shear Bearing Capacity of Concrete Exposed Aggregate Treated Bond Surfaces

JIANG Guoyong; HUANG Xuanming; ZHANG Xinjiang; WANG Jingxian; ZHANG Ning

doi:10.13204/j.gyjzG22082207

Volume 53 Issue 4

Apr. 2023

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JIANG Guoyong, HUANG Xuanming, ZHANG Xinjiang, WANG Jingxian, ZHANG Ning. Experimental Research on Compression-Shear Bearing Capacity of Concrete Exposed Aggregate Treated Bond Surfaces[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(4): 148-153,61. doi: 10.13204/j.gyjzG22082207

Citation:

JIANG Guoyong, HUANG Xuanming, ZHANG Xinjiang, WANG Jingxian, ZHANG Ning. Experimental Research on Compression-Shear Bearing Capacity of Concrete Exposed Aggregate Treated Bond Surfaces[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(4): 148-153,61. doi: 10.13204/j.gyjzG22082207

Citation:

JIANG Guoyong, HUANG Xuanming, ZHANG Xinjiang, WANG Jingxian, ZHANG Ning. Experimental Research on Compression-Shear Bearing Capacity of Concrete Exposed Aggregate Treated Bond Surfaces[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(4): 148-153,61. doi: 10.13204/j.gyjzG22082207

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Experimental Research on Compression-Shear Bearing Capacity of Concrete Exposed Aggregate Treated Bond Surfaces

doi: 10.13204/j.gyjzG22082207

1. China Academy of Building Research, National Engineering Research Center of Building Technology, Beijing 100013, China;
2. Beijing University of Technology, Beijing 100124, China;
3. Beijing Yugou Precast Concrete Engineering, Beijing 100070, China

Received Date: 2022-08-22
Available Online: 2023-07-01

Abstract

Abstract

In order to study the effect of exposed aggregate treatment on the compression-shear bearing capacity of concrete specimens, 120 specimens with exposed aggregate treatment on the joint surface and 30 whole cast specimens were designed. Based on the laser scanning technology to obtain the bond surface morphology information, the roughness characterization parameters were obtained through programming; the shear test fixture designed independently was used to carry out the compression-shear load capacity test, and the change law of compression-shear bearing capacity parameters such as cohesion and internal friction angle of concrete bond surface with different roughness under the treatment of exposed aggregates was obtained. The results showed that the shear strength of the specimen could be improved by proper treatment of exposed aggregate on the joint surface, but excessive treatment would reduce its shear strength; the two-dimensional roughness parameters obtained based on laser scanning technology could be used to characterize the shear strength of the exposed aggregate specimen; the parameters of shear bearing capacity of the specimen were not significantly improved by increasing the strength of the post-casting concrete layer; the parameters of shear bearing capacity of the exposed aggregate specimen were somewhat different from those of the one-piece casting specimen, and the treatment process of the exposed aggregate on the joint surface could not fully meet the requirements equivalent to the one-piece casting yet.
- bond surface,
- roughness,
- exposed aggregate treatment,
- compression-shear bearing capacity,
- laser scanning,
- experimental research

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References(20)

References

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