논문
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게재연도 2023
논문집명 Geomechanics and Engineerin
논문명 Evaluation of strength characteristics of cement-stabilized soil using the electrical resistivity measurement
저자 Kean Thai Chhun, Chan-Young Yune
구분 국외저널
요약

In this study, the compressive strength of cement stabilized soil was predicted using the electrical resistivity measurement. The effects of the water to cement (w/c) ratio and recovered Carbon Black (rCB) contents were examined. A series of electrical resistivity and compressive strength tests were conducted on two types of stabilized soil after 28 days of curing. Multiple nonlinear regression (MNLR) analysis was used to evaluate the relationship between the compressive strength and the electrical resistivity in terms of the rCB, Cu (uniformity coefficient), and w/c ratio. The results showed that the w/c ratio and Cu have a strong influence on the compressive strength and electrical resistivity of the cement stabilized soil compared to the rCB content. The use of a small amount of rCB led to a decrease in the void space in the specimen and was attributed to the increase strength and decrease electrical resistivity. A high w/c ratio also induced a low electrical resistivity and  compressive strength, whereas 3% rCB in the cemented soil provided the optimum strength for all w/c ratios. Finally, a prediction equation for  the  compressive  strength  using  the  electrical  resistivity  measurement  was  suggested  based  on  its  reliability, time effectiveness, non-destructiveness, and cost-effectiveness.

핵심어 cement stabilization; compressive strength; electrical resistivity; recovered carbon black