北京建筑大学学报2026，Vol.42Issue(4)：61-69,9.DOI:10.19740/j.2096-9872.2026.04.07
含盐再生骨料引发混凝土内源侵蚀研究进展
A Review of Internal Corrosion in Concrete Induced by Salt-Bearing Recycled Aggregates
摘要
Abstract
To clarify the mechanisms and durability risks of internal corrosion in concrete induced by salt-bearing recycled aggregates,this paper systematically reviews the sources,occurrence forms,release and transport,reaction-induced damage,mitigation strategies,and service-life prediction of internally sourced Cl-and SO2-4.The results indicate that internal salt attack is characterized by discrete internal sources,short transport distances,rapid early-age release,and coupling effects across multiple interfaces.Internally sourced Cl-can be immobilized through physical adsorption and chemical binding;however,carbonation and competitive binding by SO2-4 may induce chloride remobilization,thereby increasing the risk of localized reinforcement corrosion.Internally sourced SO2-4 is released through gypsum dissolution,migrates along interfacial regions,and reacts to form ettringite and other products.These products may fill pores at early ages but can ultimately initiate a corrosion feedback loop involving reaction,cracking,and accelerated transport.The risk of internal deterioration can be mitigated through a combination of source sorting,desalination,paste removal,aggregate strengthening,and chemical stabilization.Existing models should be shifted from constant external boundary conditions toward reactive transport frameworks that account for finite internal sources,multiphase reactions,interfacial heterogeneity,and stochastic parameter variability.Nevertheless,long-term validation and standardized evaluation methods remain insufficient.This review provides a theoretical basis for the quality classification,durability design,and engineering utilization of salt-bearing recycled aggregates.关键词
再生骨料/内源侵蚀/氯离子/硫酸盐/传输模型Key words
recycled aggregate/internal corrosion/chloride/sulfate/transport model分类
建筑与水利引用本文复制引用
魏子洋,程安楠,许国文,占宝剑,邢锋..含盐再生骨料引发混凝土内源侵蚀研究进展[J].北京建筑大学学报,2026,42(4):61-69,9.基金项目
国家自然科学基金国际(地区)合作与交流项目(52361165660) （地区）
国家自然科学基金面上项目(52578308) （52578308）
可持续发展科技专项(双碳专项)(KCXST20221021111205012) （双碳专项）
中建股份科技研发课题(CSCEC-2025-Z-25). （CSCEC-2025-Z-25）
