Laboratory study of soil-CFRP interaction using pull-out test

Vahid Toufigh, Farnam Saeid, Vahab Toufigh, Ahad Ouria, Chandrakant S. Desai, Hamid Saadatmanesh

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

Soil is a material which is weak in tension; however, different materials such as geotextiles are used to address this inadequacy. In recent years more than one million square metres of geotextiles were used for reinforcing soil. Nevertheless, there are several significant problems associated with geotextiles, such as creep, low modulus of elasticity and susceptibility to aggressive environments. Carbon fibre reinforced polymer (CFRP) was introduced over two decades ago to the field of structural engineering and it can also be used in geotechnical engineering. CFRP has all the benefits associated with geotextiles and it boasts a higher strength, higher modulus, no creep and reliability in aggressive environments. In this investigation, the interface properties of CFRP-sand and fine sand were investigated using the pull-out test. The pull-out test device was designed and assembled using a triaxial loading device and a direct shear device. In the pull-out test, the normal force applied by the triaxial loading and pull-out force is applied by a direct shear device. CFRP samples were prepared in the lab. Precast and cast-in-place samples were tested. The pull-out force and corresponding displacements of each of the materials were recorded and compared.

Original languageEnglish (US)
Pages (from-to)208-214
Number of pages7
JournalGeomechanics and Geoengineering
Volume9
Issue number3
DOIs
StatePublished - Jul 2014

Keywords

  • CFRP
  • cast-in-place
  • interaction
  • precast
  • pull-out test

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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