Compressive behaviour of flax FRP tube confined coir fibre reinforced concrete

Author(s): L. Yan, X. Yuan, C. Nguyen, N. Chouw
Paper category: Conference
Book title: 8th RILEM International Symposium on Fiber Reinforced Concrete: challenges and opportunities (BEFIB 2012)
Editor(s): Joaquim A.O. Barros
Print ISBN: 978-2-35158-132-2
e-ISBN: 978-2-35158-133-9
Publisher: RILEM Publications SARL
Pages: 231 - 242
Total Pages: 11
Language: English

Abstract: 
This study addresses the contribution of flax fibre reinforced polymer (FFRP) and coir fibre reinforced concrete (CFRC) to the compressive strength of the composite structure. FFRP tubes made by flax fabric reinforced epoxy resin composites were fabricated with infilled plain concrete (PC) or CFRC. The considered coir fibre content is 1 wt. % of concrete and the fibre length is 40 mm. Uniaxial compression tests were performed on the FFRP tube confined PC and CFRC specimens. The axial stress-strain relationship, confinement effectiveness, failure mode and ultimate axial strain of the FFRP confined PC and CFRC were investigated. The test results showed that FFRP tube significantly enhance the compressive strength and ultimate axial strain of both PC and CFRC, i.e. PC confined by 4-layers of FFRP tube experiences respectively 199 % and 1047 % enhancement in the compressive strength and ultimate axial strain. The stress-strain curves of FFRP confined PC and CFRC exhibit a bi-linear manner. The failure mode of FFRP tube confined PC and CFRC is dominated by the rupture of FFRP tube when its tensile strength in the hoop direction exceeds its tensile strength obtained from FFRP flat coupon tests. It was also found that coir fibre inclusion reduces the concrete cracks width for both PC and FFRP confined PC.

Online publication: 2013
Publication Type: full_text
Public price (Euros): 0.00