Abstract
In this study, effects of chemical corrosion on mechanical properties of pre-fissured red sandstone samples are investigated. Cylinder samples containing a single fissure are fabricated and immersed in different chemical solutions. Different lengths and orientations of fissure are considered. All the pre-fissures are filled with gypsum. The apparent changes of samples due to chemical reactions are first examined. Uniaxial compression tests are then performed on chemically treated samples. The variations of elastic properties and uniaxial compression strength of tested samples are analyzed in terms of geometrical configuration of pre-fissure and different chemical solutions. Cracking patterns of samples during uniaxial compression tests are also investigated.
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