Effect of Degree of Saturation on soil-nail Pullout Resistance

Soil nailing is a technique which used to reinforce and strengthen the existing ground conditions. This done by installing closely spaced, passive, structural inclusions known as nail into soil these nails helps improve overall shear strength of soil. The pullout resistance stress at grout-soil interface. soil-nail depends on many parameters. Among factors influencing resistance, degree saturation an important factor. As mass change with moisture content soil, may decrease during intense rainfall. However, verification tests are not conducted under worst condition. Hence, measured be safe parameter for design. such, in this research study, effect was studied conducting series laboratory using box. Especially designed waterproof cap apply back pressure saturate within Variation earth pressures close grouted were observed tests. It evident from results that higher saturation, lower resistance. Maximum when near optimum When sufficiently dry, due low bond between grout surface surrounding dry