The Experimental Research on the Anti-Corrosion Performance of Concrete with Different Mineral Admixtures under Sulfate and Chloride Environment

Abstract:

The performance of resistance to sulfate attack and permeability of chloride ion on concrete with different mineral admixtures (fly ash, slag single or both adding) under sulfate and chloride environment were discussed. The results indicated the performance of resistance to salt attack on concrete with appropriate mineral admixtures was improved. Under chloride environment, the resistance to sulfate attack coefficient of testing mortars descended, and compressive strength loss rate of concrete was raised after dry-wet cycles. Therefore, the performance of resistance to salt attack on concrete was decreased in this environment. Besides, on the initial stage of corrosion, the ability to resist chloride ion penetration of concrete was improved under sulfate environment, while the penetrating of chloride ion was accelerated on the later stage.

• Periodical: Applied Mechanics and Materials (Volumes 638-640)
• Pages: 1431-1435
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.638-640.1431
• Online since: September 2014
• Authors: Wen Xun Qian*, Yan Chi Zhang, Xun Jie Chen, You Lin Ouyang
• Keywords: Anti-Corrosion Performance, Mineral Admixture, Sulfate and Chloride Environment

References

[1] Neville A. The confused world of sulfate attack on concrete[J]. Cement Concrete Research, 2004, 34(8): 1275-1296.

DOI: 10.1016/j.cemconres.2004.04.004

[2] Xiao Bao Zuo, Wei Sun. Full process analysis of damage and failure of concrete subjected to external sulfate attack [J]. Journal of the Chinese ceramic society, 2009, 37(7): 1063-1067(in Chinese).

[3] Brown P.W., Badger S. The distributions of bound sulfates and chlorides in concrete subjected to mixed NaCl, MgSO4, Na2SO4 attack[J]. Cement Concrete Research, 2000, 30(10): 1535-1542.

DOI: 10.1016/s0008-8846(00)00386-0

[4] Dehwahh A. F., Maslehuddin M., Austin S.A. Long-term effect of sulfate ions and associated cation type on chloride-induced reinforcement corrosion in Portland cement concretes[J]. Cement Concrete Composite, 2002, 24(1): 17-25.

DOI: 10.1016/s0958-9465(01)00023-3

[5] Zu Quan Jin, Wei Sun, Yun Sheng Zhang. Interaction between sulfate and chloride solution attack of concrete with and without fly ash[J]. Cement and Concrete Research, 2007, 37(8): 1223-1232.

DOI: 10.1016/j.cemconres.2007.02.016

[6] Wei Rong Huang, Shu Ling Zhang, Xing Huang. Test research of the performance of resistance to sulfate attack of multiple admixtures concrete[J]. Concrete, 2011, 263(9): 64-67(in Chinese).

[7] Lun Wang, Hong Gen. Qin, Chao Ming Pang, et al. Durability of concrete under the corrosion of different salt [J]. Concrete, 2011, 265(11): 14-17(in Chinese).