• Obaid qadir jan
• Sandeep Raj

Karewas are lacustrine soil deposits of low flat mounds or elevated plateaus. They are found abundantly throughout Jammu and Kashmir, occupying an area of more than 5000 square kilometers. Karewa soils are known for their agricultural value however, the use of Karewa soils is not limited to agriculture alone, as they provide shelter for local population as well. Structures built on these soils are subjected to differential deflections, which cause distresses in Karewa soils, and cause hazardous damage to the structures. These soils exhibit low shear strength and high compressibility. They swell on wetting and shrink on drying, thus, showing undesirable engineering behavior. The present study deals with stabilization of remolded samples of Karewa soils using Rice Husk Ash (RHA). Various soil samples were collected from different locations of the Pampore area in the Kashmir valley. Soil tests like gradation, consistency limits, Unconfined Compressive Strength (UCS), and California Bearing Ratio (CBR) tests were performed. The mechanical properties of Karewa soil were improved using RHA in percentages of 5%, 7.5%, 10%, 12.5%, and 15% by dry weight of soil. The results obtained show that increase in RHA content increased the Optimum Moisture Content (OMC), and decreased the Maximum Dry unit Weight (MDU) of the soil. It was also seen that increase in RHA content, reduced the plasticity, increased the volume stability, increased the UCS, and CBR of the soil. The optimum value of RHA was observed at 10%, beyond which the strength decreased.

Mechanical properties, Karewa soil, Rice husk ash, Soil

"Effect of rice husk ash on Mechanical behaviour of Karewa soil", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 2, page no.37-47, February-2019, Available :http://www.jetir.org/papers/JETIR1902107.pdf

"Effect of rice husk ash on Mechanical behaviour of Karewa soil", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 2, page no. pp37-47, February-2019, Available at : http://www.jetir.org/papers/JETIR1902107.pdf