Correlation development of CBR values of clayey soil stabilized with varied percentage of crusher dust

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Date
2020-12
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The problem of clayey soil has been recorded all over the world because of their swelling and shrinkage properties, when it comes in contact with water. Due to this property of the clayey soil, the strength and other properties of the soil become very poor. In this investigation the effects of crusher dust on the geotechnical properties of the clayey soil is studied. The main objective of this study is to focus on compaction characteristics, soaked California bearing ratio values, unconfined compressive strength behaviour of soil stabilized with waste material crusher dust and also to find a correlation between soaked CBR values and percentage of crusher dust. CBR test is a time consuming test and requires skilled labours. A correlation is formulated that can give the soaked CBR value of the soil and crusher dust mix just by putting the percentage of crusher dust in the equation. Crusher dust is used in percentages of 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, and 50% of dry weight of natural soil. The experimental results obtained from the above mentioned tests clearly shows the significant improvement in the geotechnical properties of the soil. With increase in crusher dust content the value of MDD increases and OMC decreases. The UCS and soaked CBR values are significantly increased. The coefficient of determination found in the correlation between soaked CBR values and percentage of crusher dust comes nearly equal to 1 in case of 6th order polynomial. Results are compared for stabilized and untreated soil. It can be clearly seen from the results that crusher dust can be considered as a good stabilizing material for clayey soil.
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