海南大学学报（自然科学版中英文）2026，Vol.44Issue(1)：40-50,11.DOI:10.65658/j.hndk.2024120201
全再生粗骨料混凝土抗氯离子侵蚀试验与细观数值分析
Experimental study on chloride erosion resistance of fully recycled coarse aggregate concrete with mesoscale numerical analysis
摘要
Abstract
Chloride ion is one of the major factor affecting the durability of concrete in marine environments.The paper employs a combination of experimental and mesoscale analysis to investigate the transport mechanisms of chloride ions in fully recycled coarse aggregate concrete.Four types of recycled concrete with varying recycled coarse aggregate contents were experimentally investigated using chloride salt dry-wet cycling tests.Subsequent to these tests,a mesoscale analytical model of chloride transport was developed through a secondary software development.The favorable correlation between the test and simulation results confirmed the viability of the model.Subsequently,the impact of critical factors,such as the thickness of the old mortar and the volume of recycled aggregate,on chloride ion diffusion performance was investigated.Although an increase in the thickness of old mortar accelerated the diffusion of chloride ions,but this effect was not significant.In contrast,a higher volume fraction of recycled coarse aggregate significantly enhanced the diffusion of chloride ions in the recycled concrete.Furthermore,the stochastic convex polygonal aggregate model proposed in this paper demonstrated stable performance in simulating chloride ion diffusion.关键词
再生混凝土/氯离子/凸多边形骨料/细观数值模拟/随机性Key words
recycled concrete/chloride ions/convex polygonal aggregate/mesoscale numerical simulation/stochasticity分类
建筑与水利引用本文复制引用
刘月芳,谢志恒,余化龙,金立兵,刘志勇..全再生粗骨料混凝土抗氯离子侵蚀试验与细观数值分析[J].海南大学学报（自然科学版中英文）,2026,44(1):40-50,11.基金项目
本文得到河南省重点研发与推广专项(232103810080,252102320021)、河南工业大学拓新团队培育项目(2024TXTD15)以及河南工业大学自科创新基金(2022ZKCJ06)支持. This work was supported by the Special Focus on the Development and Promotion of Henan Province(232103810080,252102320021),the Cultivation Project of Tuoxin Team in Henan University of Technology(2024TXTD15),and the Innovative Funds Plan of Henan University of Technology(2022ZKCJ06). （232103810080,252102320021）
