Chlorine Ion Penetration Resistance of Concretes Containing Super-Fine Limestone Powder

Abstract:

The influence of limestone powder, air-entraining agent and water binder ratio on chlorine ion (Cl-) penetration resistance of concretes was investigated by rapid Cl- penetration tests. The results show that the fineness of limestone powder is a key factor to Cl- penetration resistance of concrete. It can improve Cl- penetration resistance by introducing super fine limestone powder into concrete. Cl- penetration resistance of concrete increases as curing time increases. The concrete with lower water binder ratio has better Cl- penetration resistance. The introduction of air-entraining agent into concrete can enhance Cl- penetration resistance by improving micro pores structure. The optimum mixing amount is 0.3‰.

• Periodical: Advanced Materials Research (Volumes 512-515)
• Pages: 2961-2964
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.512-515.2961
• Online since: May 2012
• Authors: Hong Fang Li, Yi Xia
• Keywords: Chlorine Ion Penetration Resistance, Limestone Powder, Mix Proportion

References

[1] A. Djerb, S. Bonneta, A. Khelidj, V. Baroghel-bouny. Cement and Concrete Research, 2008, 38(6):877

DOI: 10.1016/j.cemconres.2007.10.007

[2] G. Seishi, M.R. Della. Cement and Concrete Research, 1981, 11(5-6):751

[3] Hong-fang Li, Xiao-hong Liu and Jian-xiong Chen. Bulletin of the Chinese Ceramic Society (In Chinese), Vol. 28 (2009), p.829

[4] Testing Code of Concrete for Port and waterwog Engineering. (JTJ270-98), In Chinese,1999:188

[5] M.T. Blanco-varela, T.Vazquez, A.palomo. Cement and Concrete Research, 1986,16(1) :97

[6] C.L. Page, N.R. Short, A.E. Tarras. Cement and Concrete Research, 1981, 11(3):395.