CBR improvement of expansive black cotton soil using coir geotextile
By: Meshram, Kundan
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Contributor(s): Jain, P. K.
Publisher: Pune NICMAR 2014Edition: Vol.29(3), Jul-Sep.Description: 45-50p.Subject(s): Construction Engineering and Management (CEM)Online resources: Click here
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NICMAR Journal of construction managementSummary: The paper presents the results of laboratory study conducted on black cotton soil reinforced with a layer of Coir Geotextile (CGT ) placed at different depths below the loading surface in the California Bearing Ratio test mould. The CGT layer was placed in two ways- directly embedded in the clay or in between the cushion of sand layers. The placing of CGT was varied with reference to the loading face of California Bearing Ratio (CBR) plunger at 0mm, 25mm, 35mm and 45mm.The CBR test was conducted in soaked condition of the soil. The effect of CGT inclusion on CBR of the soil is expressed in terms of Strength Improvement Ratio (SIR) which is the ratio of CBR of CGT reinforced soil to that of the raw soil. It is found that SIR is maximum when CGT is placed just at the top of the loading face and decreases as the placement depth increases. This is true in both the cases i.e. without sand cushion and with sand cushion. Further, the SIR value is found more in sand cushion condition than the corresponding value in the other condition.
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School of Engineering & Technology (PG) Archieval Section | Not for loan | 2024-0871 |
The paper presents the results of laboratory study conducted on black cotton soil reinforced with a layer of Coir Geotextile (CGT ) placed at different depths below the loading surface in the California Bearing Ratio test mould. The CGT layer was placed in two ways- directly embedded in the clay or in between the cushion of sand layers. The placing of CGT was varied with reference to the loading face of California Bearing Ratio (CBR) plunger at 0mm, 25mm, 35mm and 45mm.The CBR test was conducted in soaked condition of the soil. The effect of CGT inclusion on CBR of the soil is expressed in terms of Strength Improvement Ratio (SIR) which is the ratio of CBR of CGT reinforced soil to that of the raw soil. It is found that SIR is maximum when CGT is placed just at the top of the loading face and decreases as the placement depth increases. This is true in both the cases i.e. without sand cushion and with sand cushion. Further, the SIR value is found more in sand cushion condition than the corresponding value in the other condition.
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