Cement impregnated fabrics for repair and retrofit of structural concrete

Title: Cement impregnated fabrics for repair and retrofit of structural concrete
Author(s): A. Peled, A. Bentur
Paper category : conference
Book title: International Workshop High Performance Fiber Reinforced Cement Composites
Editor(s): A. E. Naaman and H. W. Reinhardt
Print-ISBN: 2-912143-38-1
e-ISBN: 2912143799
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 313 - 324
Total Pages: 12
Nb references: 10
Language: English

Abstract: The potential for using fabrics impregnated in cement as a means for in-situ strengthening and retrofit of structural concrete was explored. Fabrics of different geometries and yarns, low and high modulus, were evaluated. Simulation of repair was carried out by damaging concrete cylinders in compression and thereafter repairing them by wrapping around them the fabric and impregnating it. The repaired concretes were loaded in compression, and their performance was compared with that of the "virgin" concrete. In parallel, the mechanical properties of the repair composite layer were evaluated by testing of thin composite specimens. It was shown that efficient repair was obtained in particular with the high modulus fabrics (Kevlar), but even the lower modulus (PP) could be effective in regaining the strength and inducing some post peak resistance, but to a smaller extent than that of the Kevlar. The effectiveness of the repair was found to be sensitive to characteristics associated with the technology of the repair operation, in particular with respect to the ease of handling the fabric. From this point of view, knitted fabrics performed better than woven ones, and the reasons for that are highlighted.

Online publication: 2003-04-28
Publication type : full_text
Public price (Euros): 0.00