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- W4362678409 abstract "Roller compacted concrete (RCC) is a kind of dry concrete widely used in the construction of large dams. As the weakest plane of the structure, the interlayer of the RCC dam is easy to deteriorate under the action of hydraulic shear load, geological action and environmental influence. Therefore, in this study, in combination with actual engineering, in-situ tests were carried out to study the shear properties of RCC interlayers under different cementing material treatments, different surface roughness, different exposure time and different stress. In addition, the failure modes were classified and analyzed, and the factors affecting the angle and depth of the plane undulation in the failed surface of RCC were summarized. The result shows that the shear strength of the RCC interlayer increases with the increase of normal stress. The increase of surface roughness results in better interlayer bonding and higher shear strength. After mortar treatment, the shear strength, cohesion and friction angle of the RCC layers are higher than those of the mortar treatment. The strength parameters of the RCC layer treated with cementing material are improved to a certain extent compared with that of the untreated layer. With the increase of layer exposure time, the interlayer strength parameters decreased gradually. The change of cementation between layers and the bite force of aggregate under different conditions is an important reason for the change of mechanical properties between layers of RCC. The experimental results are expected to enhance the understanding of the construction of hydraulic dams." @default.
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- W4362678409 date "2023-05-01" @default.
- W4362678409 modified "2023-10-12" @default.
- W4362678409 title "In situ experimental study on mechanical properties of interlayer in roller compacted concrete (RCC) dam" @default.
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- W4362678409 doi "https://doi.org/10.1016/j.conbuildmat.2023.131268" @default.
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