Implementation of porous material through eco-tech for deep cement–soil mixing

Abstract

ABSTRACTIn this study, a mixture design test and case study were performed in a laboratory and on field, respectively, to evaluate the applicability of an eco-friendly porous media binder (CMD-SOIL) using desulfurized ash left behind in a power plant by waste. The deep cement-soil mixing method using desulfurization ash (CMD-SOIL) is effective as a new material that can be used to cope with the cement used in the conventional deep cement mixing method. In the laboratory-based mixture design tests, the uniaxial compression strength of CMD-SOIL was up to 1.14 times higher than that of slag cement when varying water content, mixing rate, and water/binder ratio. In addition, the CMD-SOIL shown strength of up to 1.22 times higher than that of oyster shell content and up to 1.36 times higher than that of a floating soil mixture. The case study showed that the uniaxial compression strength ratio (λ) of the improved porous media of the field to that of the laboratory (qu(field)/qu(lab)) was 0.77, similar to the general rate, in the design criterion. Therefore, the CMD-SOIL has sufficient strength and economical effect on the coastal construction, in which the shell layer is mixed with shellfish, or in the application of a construction technique for treating floating soils.