Abstract
The samples of slightly weathered granite drilled before the construction of Runyang suspended bridge's north anchorage are used as the research object in this paper. Through a lot of shear strength tests of concrete-bedrock rough cement face, the influence of the cement face roughness on the shear strength, shear deformation characteristics and shear failure mechanism were systematically studied. The results show that: The post-peak stress–strain curves of smooth and rough cement faces are obviously different. The shear stress–strain curve of cement face can be generalized into 3 types. The shear stress–strain model of rough cement face is the most general form, and the smooth cement face and no cementation are its special cases. The empirical relation between cement face roughness JRC and shear strength parameters is established by the fitting of experimental data. When the cement face is climbing, the internal friction angle increases with the climbing angle. When the climbing angle is constant, the increase of cohesion is positively correlated with the ratio of fluctuation difference and wavelength. When the climbing thrust is equal to the gnawing thrust, the specimen is transformed from climbing to gnawing.
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Acknowledgements
This research was funded by the National Natural Science Foundation of China (Grant Number 41831278, 51579081 and 51709184) and the Central Public-Interest Scientific Institution Basal Research Fund (Grant Number Y118008).
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**, Y., Sun, B., Zhu, Z. et al. Study on Shear Strength of Cement Face Between Rock and Concrete. Geotech Geol Eng 39, 3829–3841 (2021). https://doi.org/10.1007/s10706-021-01730-1
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DOI: https://doi.org/10.1007/s10706-021-01730-1