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A Framework for Durability Design with Strain-Hardening Cement-Based Composites (SHCC)Reinforcing Bar Corrosion

A Framework for Durability Design with Strain-Hardening Cement-Based Composites (SHCC):... [Currently, a common use for strain-hardening cement-based composites (SHCC) is as a repair material, or for retrofitting reinforced concrete (RC) structures. This is due to SHCC being expected to have high resistance to substance penetration as the cracks that are produced in SHCC are fine. Equally, in retrofitting applications such as those described in Sects. 1.5.3–1.5.5, or in applications of steel-reinforced SHCC (R/SHCC) in structures in coastal regions, the corrosion of the steel reinforcement is likely to determine both durability and structural service life. Accordingly, this chapter discusses the chloride-induced corrosion of R/SHCC. From reported experimental results, chloride profiles in cracked R/SHCC have been reported in Chap. 2. Here, the chloride contents are evaluated for correlations with observed corrosion damage in the steel bars for different cover depths in cracked R/SHCC. Steel bar damage is expressed in terms of steel mass loss, corrosion depth, and reduction in yield resistance. Finally, a corrosion model is proposed for R/SHCC, incorporating crack width, crack spacing, free chloride content, and cover depth.] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

A Framework for Durability Design with Strain-Hardening Cement-Based Composites (SHCC)Reinforcing Bar Corrosion

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References (16)

Publisher
Springer Netherlands
Copyright
© RILEM 2017. copyright RILEM
ISBN
978-94-024-1012-9
Pages
147 –170
DOI
10.1007/978-94-024-1013-6_9
Publisher site
See Chapter on Publisher Site

Abstract

[Currently, a common use for strain-hardening cement-based composites (SHCC) is as a repair material, or for retrofitting reinforced concrete (RC) structures. This is due to SHCC being expected to have high resistance to substance penetration as the cracks that are produced in SHCC are fine. Equally, in retrofitting applications such as those described in Sects. 1.5.3–1.5.5, or in applications of steel-reinforced SHCC (R/SHCC) in structures in coastal regions, the corrosion of the steel reinforcement is likely to determine both durability and structural service life. Accordingly, this chapter discusses the chloride-induced corrosion of R/SHCC. From reported experimental results, chloride profiles in cracked R/SHCC have been reported in Chap. 2. Here, the chloride contents are evaluated for correlations with observed corrosion damage in the steel bars for different cover depths in cracked R/SHCC. Steel bar damage is expressed in terms of steel mass loss, corrosion depth, and reduction in yield resistance. Finally, a corrosion model is proposed for R/SHCC, incorporating crack width, crack spacing, free chloride content, and cover depth.]

Published: Jan 6, 2017

Keywords: Chloride; Crack width; Crack spacing; Corrosion; Pitting

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