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Polymers 2018, 10(1), 98; https://doi.org/10.3390/polym10010098

Flexural Behaviour of Carbon Textile-Reinforced Concrete with Prestress and Steel Fibres

1
Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province, Changsha 410082, China
2
College of Civil Engineering, Hunan University, Changsha 410082, China
3
Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong, China
*
Author to whom correspondence should be addressed.
Received: 15 December 2017 / Revised: 10 January 2018 / Accepted: 17 January 2018 / Published: 20 January 2018
(This article belongs to the Special Issue Textile and Textile-Based Materials)
Full-Text   |   PDF [16132 KB, uploaded 20 January 2018]   |  

Abstract

Four-point bending tests were adopted to investigate the influences of the number of textile layers, volume content of steel fibres, and prestress on the flexural behaviour of carbon textile-reinforced concrete (TRC). The failure mode of the specimen changed from debonding failure to shear failure, accompanied by the matrix-textile interfacial debonding with an increasing number of textile layers. The interfacial bonding performance between the textile and matrix improved with the addition of steel fibres in the TRC specimens. The presence of prestress or steel fibres improved first-crack and ultimate stresses of the TRC specimen. In comparison with the first-crack stress, a more pronounced enhancement in the ultimate stress was achieved by the addition of steel fibres. However, the effect of prestress on the first-crack stress was found to be more significant than on the ultimate stress. The prestress combined with steel fibres further improved the flexural behaviour of the TRC specimens. The prestressed TRC specimens with 1% volume content of steel fibres effectively avoided debonding. Thus, the utilization of the textiles could be improved. View Full-Text
Keywords: carbon textile-reinforced concrete; flexural behaviour; steel fibres; prestress; interfacial bonding performance carbon textile-reinforced concrete; flexural behaviour; steel fibres; prestress; interfacial bonding performance
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Du, Y.; Zhang, X.; Liu, L.; Zhou, F.; Zhu, D.; Pan, W. Flexural Behaviour of Carbon Textile-Reinforced Concrete with Prestress and Steel Fibres. Polymers 2018, 10, 98.

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