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Published in:
2021 | OriginalPaper | Chapter
Utilization of Geo-Grid for Improving the Strength of Subgrade Layer with Fly Ash
Authors : Paul Basudeb, Paul Sanjay
Published in: Proceedings of the Indian Geotechnical Conference 2019
Publisher: Springer Singapore
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Abstract
The present study aims at exploring the possibilities of utilization of fly ash and geo-grid for rural road. The performance of fly ash and geo-grid reinforced with soil is studied by conducting California bearing ratio (CBR) test. Studies have been carried out by considering different percentages of fly ash by placing the geo-grid sheets within the different depth positions. The motivation of the present work is to reach the soaked CBR value of a subgrade layer which is above 10%, as per I.R.C.: S.P.-72-2007. Under the soaked condition, the geo-grid shows the maximum penetration resistance and gives greater CBR values. The soaked CBR values of soil–fly ash mixed with geo-grid at different depths of single layer show that the CBR values decrease continuously with the increase in the depth of geo-grid. Also the optimum position of geo-grid to get higher value of CBR is 0.2H from the top of the specimen, where H is the total height of the soil specimen in CBR mould.