Influence of chloride contamination on carbonation of cement-based materials

被引：6

作者：

Malheiro, Raphaele ^{[1
]}

Camoes, Aires ^{[2
]}

Meira, Gibson ^{[3
]}

Amorim, Maria Teresa ^{[4
]}

机构：

[1] Univ Minho, Dept Civil Engn, ISISE, Campus Azurem, Guimaraes, Portugal

[2] Univ Minho, Dept Civil Engn, CTAC, Campus Azurem, Guimaraes, Portugal

[3] Fed Inst Educ Sci & Technol Paraiba, R Dept Balduino M de Carvalho 155-1104, BR-58036860 Joao Pessoa, Paraiba, Brazil

[4] Univ Minho, Dept Text Engn, 2C2T, Campus Azurem, Guimaraes, Portugal

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2021年 / 296卷

关键词：

Chloride; Carbonation; Cement-based materials; Combined action; Accelerated tests; Durability; PENETRATION;

D O I：

10.1016/j.conbuildmat.2021.123756

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

An experimental investigation was conducted to understand the effect of the presence of chloride on the carbonation front. Microstructural analysis was conducted to verify the carbonation development in material previously contaminated by chlorides. Accelerated tests were combined to understand how the presence of chlorides influences carbonation front and how chloride test method influences in these results. The results indicate that the presence of chloride decreases the carbonation front in cement based materials. This behaviour is related to the pore refinement and humidity retention caused by chloride. The impact on carbonation reduction occurs at different levels, according to the testing method used. (c) 2021 Elsevier Ltd. All rights reserved.

引用

页数：13

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