Abstract

The tensile behavior of Serena sandstone is investigated by means of uni-axial tensile and bending tests. In order to obtain an overall characterisation of a quasi-brittle material, such as Serena sandstone, it is necessary to investigate the post-peak softening branch by adopting a stable control system. Test results on different size specimens are presented. Also analysed in this paper is the effect of the boundary conditions in a uni-axial tensile test by comparing free and fixed platens tests. A laser interferometry technique (ESPI) was adopted to investigate the strain field and crack propagation in the material.

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