Document Type

FRP-strengthened and all-FRP structures paper

Publication details

Aydin, H, Gravina, RJ & Visintin, P 2014, 'Effects of moisture, chlorides and sulphuric acid attack on CFRP to concrete bond interfaces' in ST Smith (ed.), 23rd Australasian Conference on the Mechanics of Structures and Materials (ACMSM23), vol. I, Byron Bay, NSW, 9-12 December, Southern Cross University, Lismore, NSW, pp. 409-414. ISBN: 9780994152008.

Peer Reviewed

Peer-Reviewed

Abstract

Externally bonding carbon fibre-reinforced polymers (CFRP) to reinforced concrete structures is now a widely accepted method for strengthening. Critical to the behaviour and durability of the strengthening system is the bond interface between the CFRP and concrete substrate. A series of bond tests were conducted to assess the effects of commonly occurring in-service environmental chemical conditions on the CFRP-concrete bond interface through accelerated laboratory testing with particular emphasis on the role of sulphuric acid attack. Results show that sulphuric acid attack by acid deposition is more detrimental than chloride ingress or water diffusion to peak debonding loads.

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