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

被引：4
|
作者：
Yang, Hee Jun [1 ]
Ann, Ki Yong [2 ]
Hwang, Woongik [2 ]
机构：
[1] Bricon Lab Inc, Adv Construct Mat Testing Ctr, R&D Team, Daegu 42601, South Korea
[2] Hanyang Univ, Dept Civil & Environm Engn, Ansan 15588, South Korea
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2023年 / 409卷
基金：
新加坡国家研究基金会;
关键词：
Calcium aluminate cement; Corrosion; Chloride; Binding; CONCRETE; REINFORCEMENT; CARBONATION; RESISTANCE; BEHAVIOR; BINDING; RISK;
D O I：
10.1016/j.conbuildmat.2023.134088
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
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.
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页数：10
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