Geophysical Properties of Sand-Cement-Inorganic Binder Mixture:Electrical Resistivity and Elastic Wave Velocity

초록

This paper investigates the effects of mixing ratio, cement content and curing time on the transient electrical and mechanical properties of sand-cement-inorganic binder mixture adopting two non-destructive testing (NDT) methods, electrical resistivity (ER) test and Free Free resonant Column test (FFRC). Due to the environmental issues related to cement, the reduction of cement usage is requesting. Inorganic binder is then introduced in this paper as alternative to reduce the use of cement contents for ground improvement. The results reveal that mixing ratio and curing time have considerable effects on electrical and mechanical properties of the mixture, and it is expected that sufficient strength can be obtained with the increase of inorganic binder content, confirming that the usage of cement can be reduced to some extent.