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Study on Fatigue and Rutting Behaviour of Flexible Pavement as a result of marble dust addition in subgrade soil

Vaishali ., Monu Kumar, Ali Akbar

Abstract


The utilization of industrial waste to enhance soil properties is a cost-effective and efficient approach that also addresses waste disposal issues. Thus, understanding the properties of these wastes is crucial to evaluate their performance.

This study investigated the addition of waste marble dust to stabilize soil classified as CL based on the Indian Standard Classification system (ISCS). The soil was mixed with marble dust at 10%, 15%, 20%, and 25% by weight, and the index properties were determined at each percentage. California Bearing Ratio (CBR) and Unconfined Compressive Strength (UCS) were calculated at Optimum Moisture Content (OMC), which was determined by Proctor test for both modified and parent soil.

The results indicated that 20% waste marble dust was optimal for strengthening the parent soil. Furthermore, an evaluation was conducted to compare the observed CBR value with the predicted CBR value calculated through regression analysis using SPSS. Resilient Modulus was also determined for subgrade soils using equations specified by the Transportation and Road Research Laboratory. Based on the obtained results, pavement thickness was determined for designing flexible pavement sections according to IRC 37-2012 using IITPAVE. The use of waste materials for soil improvement is becoming increasingly popular in construction projects due to its economic and environmental benefits. Waste materials, such as marble dust, which would otherwise be discarded as landfill can be harnessed for sustainable use in construction.


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References


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