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- W1963673943 abstract "To model the complex degradation phenomena occurring in concrete affected by alkali–silica reaction (ASR), we formulate a poro-mechanical model with two isotropic internal variables: the chemical and the mechanical damage. The chemical damage, related to the evolution of the reaction, is caused by the pressure generated by the expanding ASR gel on the solid concrete skeleton. The mechanical damage describes the strength and stiffness degradation induced by the external loads. As suggested by experimental results, degradation due to ASR is considered to be localized around reactive sites. The effect of the degree of saturation and of the temperature on the reaction development is also modeled. The chemical damage evolution is calibrated using the value of the gel pressure estimated by applying the electrical diffuse double-layer theory to experimental values of the surface charge density in ASR gel specimens reported in the literature. The chemo-damage model is first validated by simulating expansion tests on reactive specimens and beams; the coupled chemo-mechanical damage model is then employed to simulate compression and flexure tests results also taken from the literature." @default.
- W1963673943 created "2016-06-24" @default.
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- W1963673943 date "2013-11-01" @default.
- W1963673943 modified "2023-09-23" @default.
- W1963673943 title "A coupled mechanical and chemical damage model for concrete affected by alkali–silica reaction" @default.
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- W1963673943 doi "https://doi.org/10.1016/j.cemconres.2013.06.011" @default.
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