Title: Effect of short carbon fibres on the fresh state and compressive strength properties of self-compacting concrete

Authors: Iftekar Gull; M.A. Tantray

Addresses: Department of Civil Engineering, National Institute of Technology, Srinagar, 190006, India ' Department of Civil Engineering, National Institute of Technology, Srinagar, 190006, India

Abstract: This study highlights the fresh state flow properties and hardened state compressive strength properties of short carbon fibre reinforced selfcompacting concrete. 15 mixes with varying W/C ratio, cement content, and the percentage of carbon fibres were investigated. The impact of the variations on the self-compacting concrete was analysed by comparing the mixes to the control mix. The present study investigations revealed a decrease in filling and passing ability of CFRSCC with the addition of higher percentages of carbon fibres while the addition of carbon fibre at lower percentage exhibits improvement in the filling, passing and segregation resistance properties. It was also observed that with the inclusion of short carbon fibres, the compressive strength was significantly improved. The microstructure of the CFRSCC with different percentages of Carbon fibre was also analysed and is presented in this study.

Keywords: pitch-based short carbon fibres; self-compacting concrete; filling ability; passing ability; segregation resistance; compressive strength; scanning electron microscopy; regression analysis; carbon fibre failure mechanism.

DOI: 10.1504/IJMMP.2020.104611

International Journal of Microstructure and Materials Properties, 2020 Vol.15 No.1, pp.36 - 57

Received: 02 May 2019
Accepted: 09 Nov 2019
Published online: 23 Jan 2020 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article