硅酸盐通报2026，Vol.45Issue(1)：58-68,11.DOI:10.16552/j.cnki.issn1001-1625.2025.0672
盐雾环境下带接缝混凝土抗氯离子侵蚀性能研究
Resistance to Chloride Ion Erosion of Jointed Concrete in Salt Spray Environment
摘要
Abstract
To investigate the chloride ion ingression mechanism in concrete with construction joints in coastal salt spray environment,chloride ion erosion tests were carried out on jointed concrete specimens in a salt spray environment,considered factors such as joint type,erosion time,and material composition,measured the chloride ion mass fraction at jointed and non-joint areas at different ages.The results show that at the same erosion time,the chloride ion mass fraction at the joint area is higher than that at the non-joint area,with the highest mass fraction at the direct wet joint.Along the concrete depth,the chloride ion mass fraction increases first and then decreases,reaching the maximum value at 4 mm deep from the exposed surface of concrete.Addition of crystalline admixture(CA)or a combination addition of CA and UEA expansive agent could both reduce the chloride ion mass fraction at the joint area,thereby mitigating the adverse effects of joints on the durability of concrete.The chloride ion diffusion coefficients at the non-joint area and joint area show the same attenuation trend with the salt spray time,the coefficient value at the joint area is approximately 1.3 times that at the non-joint area.关键词
盐雾环境/直接湿接缝/凿毛湿接缝/自愈合材料/氯离子质量分数/表观氯离子扩散系数Key words
salt spray environment/direct wet joint/roughened wet joint/self-healing material/chloride ion mass fraction/apparent chloride ion diffusion coefficient分类
建筑与水利引用本文复制引用
延永东,王宗豪,陆春华,武珂珂,江成..盐雾环境下带接缝混凝土抗氯离子侵蚀性能研究[J].硅酸盐通报,2026,45(1):58-68,11.基金项目
国家自然科学基金(52478177,51608233) （52478177,51608233）
