CAO Pei, DU Yukun. 2019: EXPERIMENTAL STUDY ON WETTING DEFORMATION AND STRENGTH BEHAVIOR OF A RED SANDSTONE WEATHERED SOIL. JOURNAL OF ENGINEERING GEOLOGY, 27(4): 819-824. DOI: 10.13544/j.cnki.jeg.yt2019800
    Citation: CAO Pei, DU Yukun. 2019: EXPERIMENTAL STUDY ON WETTING DEFORMATION AND STRENGTH BEHAVIOR OF A RED SANDSTONE WEATHERED SOIL. JOURNAL OF ENGINEERING GEOLOGY, 27(4): 819-824. DOI: 10.13544/j.cnki.jeg.yt2019800

    EXPERIMENTAL STUDY ON WETTING DEFORMATION AND STRENGTH BEHAVIOR OF A RED SANDSTONE WEATHERED SOIL

    • The disintegration and collapsibility of weathered red sandstone soil after wetting process can put a great threat on the stability of embankment. This paper investigates the wetting deformation and strength behavior of the red sandstone weathered soil. We performed a series of triaxial tests in this research using single lines method. The paper evaluates the effects of density, confining pressure and stress level on wetting axial strain. It observes that, wetting axial strain increases with the increase of both the confining pressure and the stress level, while decreases with the increase of density. The test results reveal that the wetting axial strain exhibits a linear relationship with the stress level, and an empirical expression is proposed based on the test results. In addition, the peak strength of the specimen after wetting decreases slightly with the increase of stress level, and is lower than the peak strength under saturated states.
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