Resistance of Hydrated Cement Paste to Acid Attack and Kinetics Analysis of Corrosion

Abstract:

The resistance of hydrated cement paste (HCP) to acid attack was investigated. Three groups of blended cementitious materials were designed, binary binder A (cement and slag), ternary binder B (cement, slag and silica fume), and quaternary binder C (polymer modified ternary binder). According to a series of designed experiments, acid resistance of HCP was tested by acid consumption, mass loss and corrosion depth of specimens. In the study, ternary binder B shows superior resistance to acid attack. The advantage of polymer modification is unobvious. Furthermore, the variability of acid corrosion depth d with time t was analyzed specially for the foundation of degradation model. Kinetics equation of acid corrosion was established in form of d=K•tn to predict HCP corrosion depth at specific age, which provides available references for durability analysis and engineering design of concrete structures.

• Periodical: Advanced Materials Research (Volumes 163-167)
• Pages: 3133-3137
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.163-167.3133
• Online since: December 2010
• Authors: Ming Zhao, Xiong Zhang, Yong Juan Zhang
• Keywords: Acid Resistance, Corrosion Kinetic, Durability, Hydrated Cement Paste

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