Two- and three-dimensional chloride ingress into fly ash concrete

Yunsheng Zhang; Wei Sun; Shudong Chen; Fei Guo

doi:10.1007/s11595-011-0348-4

Journal of Wuhan University of Technology Materials Science Edition ›› 2011, Vol. 26 ›› Issue (5) : 978 -982. DOI: 10.1007/s11595-011-0348-4

Article

Two- and three-dimensional chloride ingress into fly ash concrete

Yunsheng Zhang ¹^,²^,^{^a}
, Wei Sun ¹^,²
, Shudong Chen ¹^,²
, Fei Guo ¹^,²

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Abstract

2D, 3D chloride ion concentration at the edge and corner zones were systematically investigated for fly ash concretes made with different cement replacement percentage by fly ash (0%, 10%, 20%, 40%, 60%), water to binder ratios (0.3, 0.35, 0.4), and curing ages (28 d, 90 d). An interaction effect caused by 2D and 3D diffusion could obviously be observed through the comparison with 1D testing results. In order to quantify the interaction effect, 2D and 3D diffusion interaction coefficients was proposed in this paper. Finally, the changes of 2D and 3D interaction coefficients with the change in the free chloride ion concentration were given. The above research provide an insight into chloride ion attack on the edge and corner reinforcing bars of concrete structures in the field of civil engineering.

Keywords

fly ash / concrete / chlorides / two and three dimension ingress

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Yunsheng Zhang, Wei Sun, Shudong Chen, Fei Guo. Two- and three-dimensional chloride ingress into fly ash concrete. Journal of Wuhan University of Technology Materials Science Edition, 2011, 26(5): 978-982 DOI:10.1007/s11595-011-0348-4

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