Influence of Mineral Admixtures on Chloride Diffusion Coefficient of Self-Compacting Concrete

Abstract:

The influence of mineral admixtures on workability of fresh concrete and chloride ion permeability resistance of hardened concrete for C50 self-compacting concrete was investigated by means of the Natural Immersion Test. The results showed that the chloride diffusion coefficient in fly ash concrete decreased first and then increased with increasing fly ash content in cementitious materials, when fly ash content was 30% or 40%, it got the lowest value at 28 days or 90 days, respectively. The chloride diffusion coefficient in specimens decreased with increasing the ground granulated blast furnace slag content in cementitious materials, but it changed little when the replacement was in ranges of 50% to 60%. Furthermore, for the specimens which replaced by fly ash and ground granulated blast furnace slag, the chloride diffusion coefficient decreased first and then increased with increasing the fly ash content in complex cementitious, and when fly ash content was 10% or 20%, it got the lowest value at 28 days or 90 days, respectively.

• Periodical: Applied Mechanics and Materials (Volumes 405-408)
• Pages: 2876-2880
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.405-408.2876
• Online since: September 2013
• Authors: Jian Bo Xiong*, Peng Ping Li, Sheng Nian Wang
• Keywords: Chloride Diffusion Coefficient, Mineral Admixture, Self-Compacting Concrete (SCC)

References

[1] Ouyang Hualin, Su Zuping. Test study of durability and long-term performance of self-compacting C50 concrete without vibration. Concrete, 2006, 5: 60-62. (In Chinese).

[2] Zhou Hougui. Design and application of hydraulic self dense concrete. Water Power. 2007, 33 (6): 26-29. (In Chinese).

[3] Li Baoxia, Zhao Wanhua. Mix proportion design method and experiment of self-compacting concrete. Concrete, 2009, 7: 94-96. (In Chinese).

[4] Long Guangcheng, Xie Youjun and Liu Yunhua, et al. Test method for workability of self-compacting concrete. Journal of Chinese Ceramic Society, 2007, 35(10): 1359-1363.

[5] Chen Lihua, Ye Yanhua and Miao Hanliang, et al. Experiment on workability behavior for self-compacting concrete. Journal Nanjing University of Technology (Natural Science Edition), 2008, 30(3): 47-51. (In Chinese).

[6] NT BUILD 443-1995，Concrete, hardened: Accelerated chloride penetration.

[7] CECS 02-2004 Guide to Design and Construction of Self-Compacting Concrete,. (In Chinese).

[8] Dhir RK, El-Mohr Mak, Dyer T.D. Developing chloride resisting concrete using PFA. Cement and Concrete Research, 1997, 27(11): 1633-1641.

DOI: 10.1016/s0008-8846(97)00146-4

[9] Xie Youjun, Liu Baoju and Long Guangcheng. Study on dense packing properties of cementitious materials. Journal of Chinese Ceramic Society, 2001, 35(6): 1359-1363. (In Chinese).

[10] Li Pengping, Su Dagen, Wang Shengnian. Influence of binder composition and concrete pore structure on chloride diffusion coefficient in concrete. Journal of Wuhan University of Technology (Materials science), 2011, 26(1): 160-164.

DOI: 10.1007/s11595-011-0189-1

[11] Chen Yimin, Xu Zhongzi. Scientific foundation of preparation and application of high-performance cement. Chemical Industry Press, Beijing, 2008. (In Chinese).