Experimental Investigations on Carbon Textile Reinforced Cementitious Composites

ZHOU Fen, LIU Lingling, DU Yunxing

Abstract

 Quasi-static uniaxial tensile behavior of carbon textile reinforced cementitious composites (TRC) was studied, and the factors of reinforcement ratio and short steel fibres and prestress were considered in the tests. The test results showed that the efficiency of carbon fibers decreased with the increase of textile ratio for the TRC plates without steel fibres during the tests, the textile layer and matrix layer were gradually separated, and debonding failure of TRC plates occurred ultimately. Applying prestress force to the textile can increase the initial cracking stress of TRC plates, and thus improved the normal service life of TRC components. Adding steel fibres in TRC plates was helpful to improve the interfacial properties, and thus both the tensile strength and ultimate strain of the plates were enhanced. Compared with the application of prestress to the textile, more pronounced enhancements of mechanical properties were achieved by the addition of steel fibres. Applying prestress to the textile and adding 1% of steel fibres in plates at the same time can significantly improve the efficiency of carbon fibers. Eventually, carbon fibers were completely broken when the plates were damaged.

 

 

Keywords: textile reinforced cementitious composites,  carbon textile,  tensile strength,  interfacial properties


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References


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