Micro-Analysis of Sulfate Salt Attack Destruction on Autoclaved-Curing Concrete

Yan Yan Hu; Ting Shu He; Xian Zhe Zhang

doi:10.4028/www.scientific.net/AMR.1094.273

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1094Micro-Analysis of Sulfate Salt Attack Destruction...

Micro-Analysis of Sulfate Salt Attack Destruction on Autoclaved-Curing Concrete

Abstract:

The autoclaved-curing high strength concrete was prepared with quartz powder (QP). The deterioration behavior of concrete specimens partially exposed to Na₂SO₄ solutions was analyzed by using scanning electron microscopy, energy dispersive spectrometer and X-ray diffraction as well. The results show that the interfacial transition zone cause the autoclaved-curing concrete damage. Sulfate chemical erosion is the main cause the damage of cement concrete. Hydration products of decomposition are the main cause of concrete crack mixing with QP. QP concrete is more susceptible to sulphate attack.

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Periodical:

Advanced Materials Research (Volume 1094)

Pages:

273-277

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1094.273

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Online since:

March 2015

Authors:

Yan Yan Hu, Ting Shu He, Xian Zhe Zhang

Keywords:

Autoclaved-Curing Concrete, Interfacial Transition Zone, Micro-Analysis, Mineral Admixtures, Sulfate Attack

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