Engineering structures built on weak or soft soil are considered dangerous. A variety of ground may be undertaken to improve techniques and improve the load bearing capacity of the soil. In the present investigation biomass char (BMC) is used as the stabilizing material which was randomly included into the soil at different percentages of biomass char content, i.e., 2.5%, 5%, 7.5%, and 10% by the weight of the soil. The investigation has been focused on the strength and CBR (California bearing ratio) behavior of soil with randomly included powdered biomass char. This BMC is analysed by proximate analysis and the parameters like fixed carbon, ash content, volatile matter, and moisture content is obtained. Comparison between soil and BMC added soil is presented. The test results are then compared with results from virgin samples, and conclusions about the suitability and efficacy of BMC are made. The addition of BMC powder was found to improve the soft clay soils with poor strength and high compressibility. We can draw the conclusion that BMC in powder form makes for an effective stabilizing agent. BMC is widely used in agriculture as a soil neutralizer, adsorbent, and soil additive.

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