مساهمة في دراسة العلاقة بين التداعي والانتفاخ مع اجهادات مص التربة

Abstract

This research aims to study the role of soil suction and clay mineralson volumetric changes of a collapsible soil selected from Hawy Al-Kanissaarea in Mosul city. The effect of low and highly plastic clayey soil as anadditive to this soil has been investigated. The main results show the optimumclay content for soil to collapse decreases with the increase in the plasticity ofsoil. Swelling percent and pressure increase with the clay content, plasticity ofsoil and dry unit weight.Soil suction was also studied for collapsible soil with different claycontents. The results show linear relationships for all types of soil. Soil suctionalso increases with plasticity. Thus soil (CH) gave more suction than soil (CL).However, dry unit weight had little effect on soil suction, which was frequentlynegligible. Addition to that, statistical models between soil suction withcollapse and swelling potential were obtained with an acceptable correlationcoefficient.