AliAsghar Yari - MS.c, Department of Civil Engineering, Tehran University, Tehran, Iran
Milad Tajdini - Ph.D, Department of Civil Engineering, Tabriz University, Tabriz, Iran,
Ahmad Yari - MS.c, Department of Civil Engineering, Shahid Rajaee Teacher Training University, Tehran,

Soil-cement is a mixture of Portland cement, soil and water, which are bonded together due to the cement hydration and compaction, and have durability, low permeability, and resistance against wear. Water to cement ratio, cement content and type have been commonly investigated as the most effective factors on the compressive strength of soil-cement. This study aims at the investigation of the effects of some other factors, such as sand equivalent (SE), plasticity index (PI), and gradation of the soil on the compressive and flexural strength of soil-cement. Results show that the compressive and flexural strength of soil-cement increases with increasing the sand equivalent and decreasing the plasticity index of the soil.

soil-cement, compressive strength, flexural strength, plasticity index