SOIL STABILIZATION USING RICE HUSK ASH AND POLYPROPYLENE AS WASTE MATERIAL by Vinod Kumar Mishra
Abstract
Soil is very significant in civil engineering construction. Soil having poor engineering properties may create many problems. For construction of civil engineering structure the soil should have good engineering characteristics for its adequate strength. To make the soil suitable for the desired level of construction, it is necessary to augment the engineering characteristics of soil. There are various methods of improving the engineering properties of soil. The soil stabilization technique is one of the most effective tools used now days for enhancing the engineering properties of soil. But the soil stabilization is becoming costly day by day due to the rise in cost of stabilizing agent like cement, lime etc.On the other hand large quantity of waste material produced from the different industries like fly-ash, rice husk ash, plastic waste, paper mill slag etc. create negative impact on the environment causing environmental pollution and hence safe disposal of these waste material is required .Utilized these waste material as stabilizing agent for improving engineering properties of poor soil is best solution and also using these waste material as a stabilizing agent not only solve the dumping issue but as well as minimize the expenditure of stabilization. In this research work, an extensive laboratory work have been done to explore the use of local available RHA as agricultural waste and waste fibres of the polypropylene for the improvement of the various properties of the Clayey (CI) type of soil obtained from proposed site of D.A.V. public school (junior wing) behind cloth market Ambala City, Haryana (India).In present research work to explore the effect of waste fiber of polypropylene in different length and percentage as reinforcement mixed with optimum amount of RHA stabilized soil. The effect on engineering characteristics of clayey soil such as Maximum Dry Density, Optimum Moisture Content, Direct Shear Stress, Unconfined Compressive strength was investigated. The investigation results show that with the addition of rice husk ash and fibre contents the Maximum Dry Density decreases and the optimum water content increases, the most appropriate percentage of RHA is found to be 9%, the Shear parameter i.e. Cohesion (c) of the 9% RHA stabilized soil reinforced with waste fibres of polypropylene with 20 mm length and 0.30% weight of polypropylene by weight of dry soil sample, is found to be increased by 28.05% and angle of Shearing Resistance (Φ) found to be increased by 64.24% and the Unconfined Compressive Strength of the 9% RHA stabilized reinforced soil found to be increased by 59.34% with 20mm length and 0.30% by weight of dry soil sample. The optimum percentage of clayey soil: Rice Husk Ash: Polypropylene for improvement of clayey soil found to be 90.7: 9: .3 of 20mm length
