Risk Assessment and Diagnostic Method of Sulfate Attack of Cement-Based Material

Abstract:

It is very difficult to evaluate risk of sulfate attack and diagnose the form of sulfate attack of cement mortar and concrete because of the diversity of attack form and complexity of erosion phases during sulfate attack, which affect repair of concrete component damaged by sulfate attack mostly. From the sulfate ions, ambient temperature and humidity of service environment as well as local climate characteristics, key components of building structures suffered great risk of sulfate attack should be inspected well and master the property of cement-based material, and then evaluate the risk of sulfate attack. In this foundation, three main erosion phases which are ettringite, gypsum and thaumasite are distinguished by micro-analysis and so the form of sulfate attack can be identified.

• Periodical: Applied Mechanics and Materials (Volumes 174-177)
• Pages: 121-126
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.174-177.121
• Online since: May 2012
• Authors: Feng Chen Zhang, Yong Hao Fang, De Jian Shen, Ji Kai Zhou
• Keywords: Cement-Based Material, Diagnostic Method, Risk Assessment, Sulfate Attack

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