The strength of fibre reinforced clays

R. M. Grennan, P. J. Naughton

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

Determining the strength of soil containing fibres is problematic. The presence of discrete fibres reinforces the soil to such a degree that the determined value is not a true representation of the global strength. In this study cone penetration and plate bearing testing in a geotechnical centrifuge were used to determine the undrained shear strength of fibre reinforced clay. Plate bearing testing was performed on foundations of different shape and geometry. The undrained shear strength was back calculated from the foundation bearing resistance. Both inflight cone penetration and plate bearing test results showed an increase in undrained shear strength with fibre content. No optimum fibre content was found in the testing undertaken. Once a threshold fibre content of between 3-4% was exceeded a two - threefold increase in strength was observed. Overall, good correlation was found between the undrained shear strength measured with the cone penetrator and that back calculated from the plate bearing testing.

Original languageEnglish
Title of host publicationInvestigation, Classification, Testing and Forensics
EditorsDerek M. Smith, Peter J.L. Eldred, Peter J.L. Eldred, David G. Toll, Mike G. Winter, Mike G. Winter
PublisherICE Publishing
Pages3255-3260
Number of pages6
ISBN (Electronic)9780727760678
Publication statusPublished - 2015
Event16th European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2015 - Edinburgh, United Kingdom
Duration: 13 Sep 201517 Sep 2015

Publication series

NameGeotechnical Engineering for Infrastructure and Development - Proceedings of the XVI European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2015
Volume6

Conference

Conference16th European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2015
Country/TerritoryUnited Kingdom
CityEdinburgh
Period13/09/1517/09/15

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