Study on Corrosion Resistant Performance of Sulfoaluminate Cement

Abstract:

In the salt lake areas in China, the ordinary cement concrete can be corroded by the salt in the saline soil seriously, and the application of ordinary portland cement concrete in this area is impeded. Therfore, some new cementitious materials which has high durability should be searched in order to be used in the underground engineering in saline soil areas. In this study, the sulfoaluminate cement is immersed into the salt solution that has high concentration Mg²⁺, Cl^-, SO₄^2-, and the complex solution of them. The corrosion resistance performance of sulfoaluminate cement against high concentration salt solution is tested. The results indicate that Sulfoaluminate cement has perfect durability against sulfate corrosion whose concentration is in the scope of this test. Sulfoaluminate cement can not be corroded by MgCl₂ solution when MgCl₂ solution concentration is lower than degree 3; but when the concentration of MgCl₂ solution reaches degree 4, MgCl₂ solution could corrode the sulfoaluminate cement seriously. The corrosion of the specimens immersed in MgCl₂ solution whose concentration is degree 4 is caused by the composite action of Mg²⁺ and Cl^-.

• Periodical: Advanced Materials Research (Volume 710)
• Pages: 362-366
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.710.362
• Online since: June 2013
• Authors: Hao Yu, Jian Meng Li, Huang Xin
• Keywords: Corrosion Resistance, Durability, Saline Soil, Sulfoaluminate Cement

References

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