Experimental Study of Soil Subgrade When Stabilized with Rice Husk Ash and Polypropylene

Pavement quality depends upon on the potency of the land. Intensity level of sub grade is the big parameter for estimating the thickness of pavement. In case of pavement the sub-form should be uniform in terms of Geotechnical properties like shear strength, compressibility etc. Construction of pavement could be natural soil which can likewise be expanded, clayey or organic. Natural soils, suffer volume amendment due to wet content that causes heaving, cracking and the break-up of the road paving. As a result of this reason, stabilization of those sorts of soil is significant, to suppress swelling and increase the effectiveness of the land. The rising price of traditional stabilizing agents and the indigence for the economical utilization of industrial and agricultural wastes for beneficial engineering purposes has prompted an investigation into the stabilizing potential of Rice Husk Ash (RHA) and Polypropylene (PP) in subgrade soil. The aim of this study is to utilize the effectiveness of Rice Husk Ash and Polypropylene material to enhance the attributes of natural soil used for subgrade material in pavement. The soil was stabilized different percentages (5, 10, 15, 20, 25 & 30) of RHA and after obtaining an optimum part of RHA, PP with percentage of 0.25%, 0.50%, 0.75%, 1.00%, is appended along with RHA individually, for the structure of sub grade soil and test like Liquid Limit, Plastic Limit, Plasticity Index, Specific Gravity, Optimum Moisture Content, Maximum Dry Density, Swelling Pressure and CBR are performed.