Mechanical properties improvement of clay soils using dry dust collector and silica sand wastes

Abstract

Wastes from industrial parks increase rapidly; they are also difficult to manage. They should be carefully managed and used for other purposes, e.g., improving the infrastructure. The study did some laboratory experiments, e.g., California bearing ratio test, direct shear test, and triaxial (unconsolidated and undrained condition) test. Soil stabilization through chemical addition was done by mixing the original soil with some compositions of dry dust collector and silica sand wastes. California bearing ratio value of the 5mm penetration of soil with an additive composition of 7.5% silica sand and 1.5% dry dust collector was increased by 86 %. Internal friction angle value based on triaxial test showed that soil with an additive composition of 7.5 % silica sand (without dry dust collector) was increased by 2.5 %. The cohesion of soil having the additive composition of 7.5 % silica sand and 1.5 % dry dust collector increased by 60 % from the original soils.