INFLUENCE OF HPFRCC ON CORROSION INITIATION AND CORROSION PROPAGATION

Author(s): G.G. Jen, W.L. Nguyen and C.P. Ostertag
Book Title: Seventh International RILEM Conference on High Performance Fiber Reinforced Cement Composites (HPFRCC7)
Editor: H.W. Reinhardt, G.J. Parra-Montesinos, H. Garrecht
ISBN: 978-2-35158-145-2
e-ISBN: 978-2-35158-146-9
Publisher: RILEM Publications SARL
Publication year: 2015
Pages: 497-504
Total Pages: 8
Language: English

Abstract: Corrosion damage of steel reinforcing bars, a primary durability concern of conventional reinforced concrete, has been simplified to a two-stage model based largely on factors of initiator ingress and the subsequent rate of corrosion activity. In conventional concrete the manner in which these factors are influenced by crack development has been empirically established, while for high performance fiber reinforced concrete less experimental evidence is available to describe the continuous transition from the initiation phase to the propagation phase and the manner in which fiber reinforcement is influential. In this multi-year experiment, a hybrid fiber reinforced concrete is investigated for the manner in which fiber reinforcement can produce a useful extension of the initiation phase duration relative to conventional concrete in addition to providing a limitation upon the achievable rates of corrosion developed during the propagation phase. Importantly, through the suppression of corrosion-induced splitting cracks by fiber reinforcement it is suggested that a substantial improvement to composite beam life expectancy can be gained.

Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00