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

Abstract:

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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.

Info:

Periodical:

Advanced Materials Research (Volumes 163-167)

Edited by:

Lijuan Li

Pages:

3133-3137

DOI:

10.4028/www.scientific.net/AMR.163-167.3133

Citation:

M. Zhao et al., "Resistance of Hydrated Cement Paste to Acid Attack and Kinetics Analysis of Corrosion", Advanced Materials Research, Vols. 163-167, pp. 3133-3137, 2011

Online since:

December 2010

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Price:

$35.00

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