IMPROVING THE BOND BEHAVIOR OF TEXTILE REINFORCEMENT AND MORTAR THROUGH SURFACE MODIFICATION

Author(s): C. Morales Cruz, U. Gohil, T. Quadflieg, M. Raupach and T. Gries
Book Title: FERRO-11 – 11th International Symposium on Ferrocement and 3rd ICTRC - International Conference on Textile Reinforced Concrete
Editor: Wolfgang Brameshuber
Print-ISBN: 978-2-35158-152-0
e-ISBN: 978-2-35158-153-7
Publisher: RILEM Publications SARL
Publication year: 2015
Pages: 215-224
Total Pages: 10
Language: English

Abstract: The bond between mortar and textile reinforcement is of crucial evidence for Textile Rein-forced Concrete (TRC). Often, SBR (Styrene-Butadiene Rubber) and EP (Epoxy) impregnated carbon and AR-Glass fibre textiles are used. However, the bonding behavior within these reinforcements for TRC has shown potential for improvement, especially when testing the adhesive tensile strength. Therefore, a preliminary trial was undertaken to investi-gate the influence of a surface coating with EP and sand as a bonding agent to improve the bond characteristics of TRC. A SBR-impregnated carbon textile was modified with silica sand EP ratios of 0.10, 0.20 and 0.30. In the conducted studies tensile tests on single rovings and on rectangular TRC samples have been carried out. No reduction of the tensile strength of the single rovings was reported. The first results of this study on TRC specimens with a surface modified textile reinforcement and a sand EP ratio of 0.10 already indicate an improvement of the bond behavior. Next steps include tensile strength tests on TRC specimens with further variations of the surface modification and two silica sand EP ratios of 0.20 and 0.30. Pull-out tests in order to quantify the “slip” behavior between textile reinforcement and mortar as well as surface adhesion tests will be undertaken.

Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00