Laboratory Experiment of the Anticorrosion of Cement Stabilized Soft Soil in Deep Mixing Pile

Abstract

For the need of deep mixing pile installation of western channels of Shenzhen lough in seawater, the paper designed laboratory experiments on anticorrosion ability of cement soil in the condition of water, corrosive groundwater, seawater and solution with w(Na2SO4)=1. 5%, respectively. The study illustrates that cement soil with single harden agent cement has poor anticorrosion in corrosive seawater. Increasing the percentage of cinder and fly ash in harden agent would enhance the anticorrosion of cement soil. Also, the study has established the relationship between percentage of cinder and fly ash in harden agent and compressive strength and anticorrosion of cement soil. It is showed that when the percentage of harden a gent keeps unaltered,substituting some amount of cinder and fly ash for cement would increase the compressive strength remarkably and also improve anticorrosion ability. Then,the optimal anticorrosive formula for cement soil is presented. When cinder and fly ash accounts for 40%-60% in harden agent,the need of both compressive strength and anticorrosion ability could be satisfied. This study provides feasible instructions for similar projects.