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Performance of fiber reinforcement in completely decomposed granite

Performance of fiber reinforcement in completely decomposed granite
Performance of fiber reinforcement in completely decomposed granite
Adding discrete fibers to soils can improve their strength; however, fiber reinforcement remains scarce in practice. Previous studies on the performance of soils reinforced with discrete fibers consist mainly of laboratory studies with either clay or, most often, uniform sand as the host soil, so there is a lack of data on other types of soils such as weathered soils, which tend to be well graded. Unlike uniform soils, which are generally dilative, well-graded soils usually show a contractive behavior. This study examines the effect of adding fibers to a completely decomposed granite (CDG) typical of many residual soils, which has the characteristics to be sensitive to material and sample preparation and also to be compressive during shearing. It is found that adding discrete fibers to the CDG homogenizes it because the reinforced soil is not sensitive to the method of material or sample preparation. It is also found that, despite its compressive nature, fibers mobilize extra strength compared with the unreinforced soil, and this effect does not reduce at large confining stresses.
Residual soils; Reinforced soils; Laboratory tests
1090-0241
Madhusudhan, B.N.
e139e3d3-2992-4579-b3f0-4eec3ddae98c
Baudet, B.A.
b95bafc2-aec1-4cdd-8aec-7c71fc898d1d
Ferreira, P.M.V.
a2bc33a0-6c13-4443-aebc-b1479d26bb56
Sammonds, P.
64fe1a70-36e1-462d-bdb9-c6c9b5c012bd
Madhusudhan, B.N.
e139e3d3-2992-4579-b3f0-4eec3ddae98c
Baudet, B.A.
b95bafc2-aec1-4cdd-8aec-7c71fc898d1d
Ferreira, P.M.V.
a2bc33a0-6c13-4443-aebc-b1479d26bb56
Sammonds, P.
64fe1a70-36e1-462d-bdb9-c6c9b5c012bd

Madhusudhan, B.N., Baudet, B.A., Ferreira, P.M.V. and Sammonds, P. (2017) Performance of fiber reinforcement in completely decomposed granite. Journal of Geotechnical and Geoenvironmental Engineering, 143 (8). (doi:10.1061/(ASCE)GT.1943-5606.0001716).

Record type: Article

Abstract

Adding discrete fibers to soils can improve their strength; however, fiber reinforcement remains scarce in practice. Previous studies on the performance of soils reinforced with discrete fibers consist mainly of laboratory studies with either clay or, most often, uniform sand as the host soil, so there is a lack of data on other types of soils such as weathered soils, which tend to be well graded. Unlike uniform soils, which are generally dilative, well-graded soils usually show a contractive behavior. This study examines the effect of adding fibers to a completely decomposed granite (CDG) typical of many residual soils, which has the characteristics to be sensitive to material and sample preparation and also to be compressive during shearing. It is found that adding discrete fibers to the CDG homogenizes it because the reinforced soil is not sensitive to the method of material or sample preparation. It is also found that, despite its compressive nature, fibers mobilize extra strength compared with the unreinforced soil, and this effect does not reduce at large confining stresses.

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Performance of Fiber Reinforcement in Completely Decomposed Granite - Version of Record
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Accepted/In Press date: 24 January 2017
e-pub ahead of print date: 11 April 2017
Keywords: Residual soils; Reinforced soils; Laboratory tests

Identifiers

Local EPrints ID: 412238
URI: http://eprints.soton.ac.uk/id/eprint/412238
ISSN: 1090-0241
PURE UUID: ea69849e-f4e2-43a7-a7f9-49850c80bd4c
ORCID for B.N. Madhusudhan: ORCID iD orcid.org/0000-0002-2570-5934

Catalogue record

Date deposited: 14 Jul 2017 16:30
Last modified: 27 Apr 2022 02:00

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Contributors

Author: B.A. Baudet
Author: P.M.V. Ferreira
Author: P. Sammonds

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