Influence of Peat Soil Environment on Mechanical Properties of Cement-Soil and Its Mechanism

The influence of peat soil environment (PSE) on the mechanical properties cement-soil in area around Dianchi Lake and Erhai Yunnan Province has attracted much attention. This study explores change law UCS PSE, provides guidance for development sustained usage foundation. paper discusses preparation samples by adding humic acid (HA) cement to cohesive with low organic matter content (blending method) soaking it fulvic (FA) solution deionized water (steeping simulate actual working cement-soil. Unconfined compressive strength (UCS), consumption, ion leaching, scanning electron microscope (SEM), X-ray diffraction (XRD) tests are carried out soaked 90 days. results show that HA can significantly reduce FA when is less than 18%. However, amount more 18%, increases slightly. makes deformation failure type gradually from brittle shear plastic failure. reacts hydration products sample so cumulative consumption continues increase, dissolution Ca2+, Mg2+, Al3+, Fe3+ concentration solution. In addition, SEM XRD increase macropores connectivity cement-soil, while fills part pores wetting layer. strengthen inner structure particles fill layers particles, enhancing construction greater its relatively improved. there small interaction between weak. mainly a weakening effect, reduced.