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EFFECT OF WHEAT STRAW ON THE SPECIFIC GRAVITY, OPTIMUM MOISTURE CONTENT AND MAXIMUM DRY DENSITY OF CLAYEY SOIL

Gul Muhammad*, Amanullah Marri, Ali Asghar, Jahanzaib Sherani

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ABSTRACT

Worldwide, clayey soils are common and abundant. Large lakes, marine basins, and river deltas are examples of depositional systems with relatively little energy that are typically associated with clayey soil deposits. It is believed that clayey soils are more susceptible to variations in moisture. In addition, these soils provide a variety of difficulties, including excessive compressibility, water softening, limited bearing capacity, and expansive qualities. The aim of this study is to determine the specific gravity,optimum moisture content and maximum dry density on the clayey soil with the impact of wheat straw.The previous studies mainly focused on the the chemical properties shearstrength characteristics and biological properties of clayey soil with the adding of natural fibers content.it is little focused on the influence of wheat starw on the average specific gravity and compaction characteristics of clayey soil.In present investigation the wheat straw fiber is incorporated in a clayey soil sample at the dosages of 0% (standard sample), 2%, 4%, 6% , 8%  and 10% by weight and apply the modified proctor test on the samples and the average specific gravity was determined by applying the equation. The test findings show that increasing the percentages of wheat straw components causes a drop in maximum dry density and specific gravity and an increase in optimal moisture content.  

Keywords: Wheat Straw, Optimum Moisture Content, Specific Gravity, Maximum Dry Density