Study on Chloride Penetration Resistance of High Volume Slag Powder Concrete

Abstract:

The influences of Portland cement substituted by slag powder in a high proportion (50% and 70%) on the chloride penetration resistance of concrete were studied. The results show that: the penetrability of Portland cement concrete reduced by one grade if 0.5% water reducer is added, but the water binder ratio is not the decisive factor for the permeability. There is a negative correlation between 6h electric flux and compressive strength only when concrete with same cementing materials. High volume slag powder concrete has excellent resistance to chloride ion permeability, which declines further with the increment of slag powder quantity added, the permeability coefficient of the concrete with 50% and 70% content of slag powder is as low as 27.8%~32.3% that of Portland cement concrete.

• Periodical: Applied Mechanics and Materials (Volumes 584-586)
• Pages: 1005-1010
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.584-586.1005
• Online since: July 2014
• Authors: Hong Xia Ding, Chun Tao Wang, Bin Ge, Yun Sheng Li
• Keywords: 6h Electric Flux, Chloride Penetration Resistance, High Volume, Slag Powder

References

[1] Xiaoling Huang, Haiyan Chang, Haoxuan Li, etc. Study on chloride ion permeability-resistance of concrete with fly ash．Ready-mixed Concrete, 2011(5): 43.

[2] Xiaoqin Peng, Can Hu, Cong Lan, etc. Effect of mineral admixtures incorporation on chloride ion permeability resistance of low water-cement ratio concrete. Bulletin of the Chinese Ceramic Society, 2013, 32(12): 2435-2439.

[3] Liming Wang, Song-song He. Experimental Research on influencing factors of concrete's anti-permeability. Low Temperature Architecture Technology, 2013, 10：7-9.

[4] YoujunXie, BaojuLiu, WeiLiu. Influence of mineral admixture on the resistance to penetration of chloride ions into concrete. Journal of Railway Science and Engineering, 2004, 1(2): 46-51.

[5] Nianqian Feng, Feng Xing. High Performance Concrete Technology. Beijing：Atomic Energy Press, (2001).

[6] Kunlin Ma, Youjun Xie, Guangcheng Long, etc. Study on preparation of high performance concrete with impermeability to chloride ions. Industrial Construction, 2006, 36(11): 90-93.

[7] Baoguo Ma, Pingjun Zhang, Hongbo Tan. Study of the influence of mineral admixture on chloride permeability in marine concrete. Journal of Shijiazhuang Railway Institute, 2004, 17(1)：6-9.

[8] Hongmei HU, Bao-guo MA. Experiment study on mineral functional materials in improving chloride ionpenetration of concrete. Concrete, 2004, 2: 16-20.