Effects of Compositions on the Chloride Ion Permeability of Geopolymer Concrete

Abstract:

The three key oxide molar ratios of geopolymer concrete were studied in this paper: n(SiO2)/n(Al2O3)，n(Na2O)/n(Al2O3) and n(H2O)/n(Na2O). The effect of each oxide molar ratio was assessed by electric flux method. It was found that resistance to chloride ion of geopolymer was increased with increasing n(SiO2)/n(Al2O3).However, there was a limit beyond which this performance improved; it performed better with the increasing of n(Na2O)/n(Al2O3) but worse with the increasing of n(H2O)/n(Na2O). With the same amount of cementitious material, resistance to chloride ion of geopolymer concrete was better than that of common concrete.

• Periodical: Advanced Materials Research (Volumes 450-451)
• Pages: 428-432
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.450-451.428
• Online since: January 2012
• Authors: Qing Wang, Jing Da, Cun Bao Zhang, Zhao Yang Ding, Zhi Tong Sui
• Keywords: Chloride Ion Permeability, Composition, Concrete, Geopolymer

References

[1] Andrade, C,Castellote, M,Castro, P: Cement and Concrete Research,2000,3(7):1047-105

[2] Qiannai Feng, Feng Xing: Concrete, 2001(11):3-8. (In Chinese)

[3] M.Steveson: Journal of materials science, 2005, 40, 2023-2036

[4] Yunsheng Zhang, Wei Sun, Zongjin Li: Journal of the Chinese Ceramic Society, 2007, 35(4):420-424. (In Chinese)

[5] Yimiao Nie, Hongwen Ma, Jing Yang: Geoscience, 2006(2): 420-426. (In Chinese)

[6] Nanru Yang: Journal of the Chinese Ceramic Society, 1996, 24(2): 209-215. (In Chinese)

[7] Peter Duxson,JannieS.J.van Deventer:Colloids and Surfaces A: Physicochem. Eng. Aspects , 269(2005) ,47-58