Experimental study on the physical and chemical properties of plant cement-stabilized soil based on magnesium phosphate cement

Due to the presence of a large amount of calcium hydroxide hydration products and high alkalinity in traditional Portland cement, the vegetation performance of the prepared cement-stabilized soil is poor. This paper uses magnesium phosphate cement (MPC) with neutral pH, high cohesiveness, and nutrient slow-release function as a cementitious material to prepare plant cement-stabilized soil for slope ecological restoration. The physical and chemical properties of MPC-stabilized soil were tested and analyzed. The experimental results indicate that the hydration product struvite of MPC binds soil particles together, forming a larger water stable aggregate structure and significantly improving the compressive strength and water stability of soil. The nutrient slow-release function of struvite significantly enhances soil N and P nutrients. Therefore, MPC-stabilized soil has great potential for application in reducing soil erosion on exposed slopes and promoting rapid vegetation restoration.