A Study of Tensile Strength on Compacted Sand-Bentonite Mixtures and Mixture's Crack Pattern with pH Levels

다짐된 모래-벤토나이트 혼합토의 인장강도와 산성도에 따른 혼합토의 균열패턴에 관한 연구

Tensile strength of soil is one of the important strength parameters in geotechnical engineering. The importance of the tensile strength of soil has been pointed out and given considerable attention in many highway pavements and earthfill dams. Recently, one of tensile strength problems, cracking failure of clay liners which is related to leakage of polluted water has been reported. Thus, the tensile strength of compacted sand-bentonite mixtures, which are used widely in the landfill construction site as clay liners was measured by Improved Unconfined Penetration (IUP) test. In addition, to find out the effects of contamination levels of water on the tensile strength and desiccation crack pattern, different pH levels of water were used for making specimens prepared with three different mixing contents of bentonite.