Corrosion of steel in chloride-contaminated calcium aluminate cement (CAC) mortar depending on its hydrations

Yang, Hee Jun; Ann, Ki Yong; Hwang, Woongik

doi:10.1016/j.conbuildmat.2023.134088

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Corrosion of steel in chloride-contaminated calcium aluminate cement (CAC) mortar depending on its hydrations

Yang, Hee Jun;
Ann, Ki Yong;
Hwang, Woongik

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WEB OF SCIENCE

6

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6

초록

The present study concerns the resistance of calcium aluminate cement (CAC) against steel corrosion. Corrosion behaviour of steel, chloride binding/buffering and chloride transport were evaluated to predict the risk of steel corrosion. The CAC mortar had no corrosion of steel, irrespective of the curing temperature and CAC types, while ordinary Portland cement (OPC) indicated a severe corrosion on the steel surface. The chloride binding capacity for CAC was lower than OPC, but the buffering to a pH decrease was highly ranked in CAC paste. Moreover, ingress of chlorides at all depths was reduced in CAC, imposing the mitigated corrosion risk.

키워드

Calcium aluminate cement; Corrosion; Chloride; Binding; CONCRETE; REINFORCEMENT; CARBONATION; RESISTANCE; BEHAVIOR; BINDING; RISK

제목: Corrosion of steel in chloride-contaminated calcium aluminate cement (CAC) mortar depending on its hydrations

저자: Yang, Hee Jun; Ann, Ki Yong; Hwang, Woongik

DOI: 10.1016/j.conbuildmat.2023.134088

발행일: 2023-12

유형: Article

저널명: Construction and Building Materials

권: 409

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