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Technique for Using Fine-Grained Soil in Reinforced Earth

Sridharan, A and Murthy, BRS and Bindumadhava, * and Revanasiddappa, K (1991) Technique for Using Fine-Grained Soil in Reinforced Earth. In: Journal of Geotechnical and Geoenvironmental Engineering, 117 (8). 1174 -1190.

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Abstract

The performance of reinforced earth structures depends on the mobilization of interfacial shearing resistance between soil and reinforcement. This criterion typically eliminates the use of fine-grained soil as a backfill material in reinforced earth structures. Considering the distribution of induced interfacial shear stress in soil around the surface of the reinforcement, it has been shown that only a thin zone of frictional material around the reinforcement is required to mobilize almost full interfacial shearing resistance of sand. Six series of pullout tests have been conducted, with different types of reinforcement, to study the effect of thickness of sand (frictional material) around the reinforcement on the pullout resistance. Sawdust and kaolin clay have been used as bulk backfill material, providing the soil with negligible friction. With low-friction-strength soil as bulk material, a 15-mm thickness of sand around the reinforcement is required to increase the interfacial shearing resistance to that with sand as the bulk material. With this new technique, low-frictional fine-grained soils can be used as bulk backfill material in reinforced earth constructions.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to American Society of Civil Engineers.
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 14 Dec 2010 05:10
Last Modified: 14 Dec 2010 05:10
URI: http://eprints.iisc.ernet.in/id/eprint/34220

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