Experimental Study on Engineering Characteristics of Cement-Lime-Improving Silt in Eastern Henan Province

With the construction of expressways in eastern Henan, silt has been widely used as a filling material. However, this area is lacking clay, content active oxides soil low, and particles are bonded together. The property poor, erosion resistance not strong, direct roadbed prone to engineering problems. Due obvious regionality paper firstly analyzes basic physical properties Henan using compaction, compression, shear particle gradation tests. research displays that with increase dosage cement or lime, optimal water increases, while maximum dry density decreases. compressibility decreases linearly content. improved significant large particles. When lime 2%–6%, good gradation, improvement effect on cohesion much greater than internal friction angle. comprehensive analysis shows should be 4%–6%. In early stage, better lime.