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Influence of Composite Reinforcing Elements in the Construction of Pavements on Expansive Clayey Subgrades


Affiliations
1 Department of Civil Engineering, S.V.U. College of Engineering, Tirupati, India
2 Department of Civil Engineering, VIT University, Vellore, India
     

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In this paper, the influence of composite reinforcing elements in the construction of pavements on expansive clayey subgrades is presented. Natural fabrics such as coir and jute have been used.CBR method is employed for the design of flexible pavements in most of the design offices even though it is empirical in nature, since the method is simple and convenient to apply and the CBR value of the subgrade indirectly gives the strength of subgrade soil. The results are analyzed effectively by introducing two non-dimensional factors namely, Effective Depth Ratio (EDR) and Strength Benefit Ratio (SBR). It is found that both CBR and SBR values increases with provision of composite reinforcing elements. Based on the favorable results obtained, it can be concluded that expansive soil can be successfully stabilized using composite reinforcing elements.

Keywords

California Bearing Ratio, Effective Depth Ratio, Composite Reinforcing Elements, Expansive Clay, Strength Benefit Ratio
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  • IS 1498-1970, Classification and Identification of Soils for General Engineering Purposes.
  • IS 2720 (Part VII)-1980, Method of Test for Soils, Determination of Water Content-Dry Density relation using Light Compaction.
  • IS 2720 (Part X)-1991, Method of Test for Soils, Determination of Unconfined Compressive Strength.
  • IS 2720 (Part XVI)-1987, Method of Test for Soils, Laboratory Determination of CBR.
  • Patel N.M. and Gurappachari T (1991), “Another composite reinforcing soil subgrade by various techniques and their efficiency”, Proceedings of Indian Geotechnical Conference.

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  • Influence of Composite Reinforcing Elements in the Construction of Pavements on Expansive Clayey Subgrades

Abstract Views: 279  |  PDF Views: 0

Authors

A.V. Narasimha Rao
Department of Civil Engineering, S.V.U. College of Engineering, Tirupati, India
D. Neeraja
Department of Civil Engineering, VIT University, Vellore, India

Abstract


In this paper, the influence of composite reinforcing elements in the construction of pavements on expansive clayey subgrades is presented. Natural fabrics such as coir and jute have been used.CBR method is employed for the design of flexible pavements in most of the design offices even though it is empirical in nature, since the method is simple and convenient to apply and the CBR value of the subgrade indirectly gives the strength of subgrade soil. The results are analyzed effectively by introducing two non-dimensional factors namely, Effective Depth Ratio (EDR) and Strength Benefit Ratio (SBR). It is found that both CBR and SBR values increases with provision of composite reinforcing elements. Based on the favorable results obtained, it can be concluded that expansive soil can be successfully stabilized using composite reinforcing elements.

Keywords


California Bearing Ratio, Effective Depth Ratio, Composite Reinforcing Elements, Expansive Clay, Strength Benefit Ratio

References