Dynamic Triaxial Test and Microscopic Study of Solidified Muddy Soil With Different Mixing Ratios and Curing Ages

Aiming to explore the optimal mixture ratio and curing age of solidified muddy soil under dynamic load, paper intends investigate whether can be used as filling high-speed railway subgrade. Based on triaxial test, investigation measured strain elastic modulus different mix ratios ages, also observed microscopic morphology samples by using scanning electron microscope. The results show that addition cement agent significantly increases strength soil, which effectively improve characteristics soil. effect is more obvious with increase dosage ratio. content plays a leading role in hydration reaction between cement, particles. Additionally, case same test conditions, when mass dry silt 1:20, diluent volume 28 days age, its will reach best.