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Journal of Zhejiang University SCIENCE A 2010 Vol.11 No.9 P.683-690

http://doi.org/10.1631/jzus.A0900609


Effect of mineral admixtures and repeated loading on chloride migration through concrete


Author(s):  Wu-man Zhang, Heng-jing Ba

Affiliation(s):  School of Transportation Science and Engineering, Beihang University, Beijing 100191, China, School of Civil Engineering, Harbin Institute of Technology, Harbin 150006, China

Corresponding email(s):   wmzhang@buaa.edu.cn

Key Words:  Concrete, Fly ash (FA), Ground granulated blast furnace slag (GGBFS), Chloride migration, Repeated loading


Wu-man Zhang, Heng-jing Ba. Effect of mineral admixtures and repeated loading on chloride migration through concrete[J]. Journal of Zhejiang University Science A, 2010, 11(9): 683-690.

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author="Wu-man Zhang, Heng-jing Ba",
journal="Journal of Zhejiang University Science A",
volume="11",
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pages="683-690",
year="2010",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A0900609"
}

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%T Effect of mineral admixtures and repeated loading on chloride migration through concrete
%A Wu-man Zhang
%A Heng-jing Ba
%J Journal of Zhejiang University SCIENCE A
%V 11
%N 9
%P 683-690
%@ 1673-565X
%D 2010
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A0900609

TY - JOUR
T1 - Effect of mineral admixtures and repeated loading on chloride migration through concrete
A1 - Wu-man Zhang
A1 - Heng-jing Ba
J0 - Journal of Zhejiang University Science A
VL - 11
IS - 9
SP - 683
EP - 690
%@ 1673-565X
Y1 - 2010
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A0900609


Abstract: 
The effect of fly ash (FA) and ground granulated blast furnace slag (GGBFS) on chloride migration through concrete subjected to repeated loading was examined. Portland cement was replaced by three percentages (20%, 30%, and 40%) of mineral admixtures. Five repeated loadings were applied to concrete specimens using a WHY series fully automatic testing machine. The maximum loadings were 40% and 80% of the axial cylinder compressive strength (fc). chloride migration through concretes was evaluated using the rapid chloride migration test and the chloride concentration in the anode chamber was measured. The results showed that the replacement percentages of mineral admixtures, the curing time and repeated loading had a significant effect on chloride migration through concrete. The transport number of chloride through concrete cured for 28 d increased with increasing FA replacement and markedly decreased with extension of the curing time. 20% and 30% GGBFS replacement decreased the transport number of chloride through concrete, but 40% GGBFS replacement increased the transport number. Five repeated loadings at 40% or 80% fc increased the transport number of chloride for all mixes.

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