碱激发材料的碳化和氯离子渗透：综述

Carbonation and Chloride Ions' Penetration of Alkali-Activated Materials: A Review.

作者信息

Zhang Xuanhan, Long Kaidi, Liu Wei, Li Lixiao, Long Wu-Jian

机构信息

Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen Durability Center for Civil and Transportation Engineering, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China.

出版信息

Molecules. 2020 Nov 1;25(21):5074. doi: 10.3390/molecules25215074.

DOI:10.3390/molecules25215074

PMID:33139641

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7662611/

Abstract

Alkali-activated materials (AAMs) are widely recognized as potential alternatives to ordinary Portland cement (OPC) due to their lower carbon footprint. However, like OPC, AAMs can also generate some durable problems when exposed to aggressive environments and the mechanisms and possible improvements are still not fully clear in existing investigations. Furthermore, the corrosion mechanisms of AAMs are different from OPC due to the discrepant reaction products and pore structures. Thus, this study's aim is to review the chemical reaction mechanisms, factors, and mitigation methods when AAMs are attacked by carbonation and chloride ions, along with a summative discussion regarding instructive insights to durable problems of AAMs.

摘要

碱激活材料（AAMs）因其较低的碳足迹而被广泛认为是普通硅酸盐水泥（OPC）的潜在替代品。然而，与OPC一样，AAMs在暴露于侵蚀性环境时也会产生一些耐久性问题，现有研究中其机理和可能的改进方法仍不完全清楚。此外，由于反应产物和孔隙结构不同，AAMs的腐蚀机理与OPC不同。因此，本研究的目的是综述AAMs受到碳化和氯离子侵蚀时的化学反应机理、影响因素及缓解方法，并对AAMs耐久性问题的指导性见解进行总结讨论。