摘要
以矿粉和粉煤灰为主的矿物掺合料混凝土广泛应用于恶劣侵蚀环境下的混凝土结构工程中,其耐久性能是整个结构耐久性能研究的重点。考虑海洋环境中混凝土结构遭受正常使用荷载和氯离子侵蚀的共同作用,开展了矿物掺合料混凝土氯离子渗透性能的试验研究。研究结果表明:复掺混凝土的抗氯离子渗透能力最强;单掺粉煤灰混凝土抗氯离子渗透能力前期比不掺混凝土差,后期不断提高并超过不掺混凝土。研究成果可为复掺混凝土耐久性研究提供参考。
Giving priority to slag and fly ash, the mineral admixture concrete is widely used in concrete structures engineering under harsh erosion conditions,which is the focus of the entire structure durability research.It considered the combined effect of normal loads and chloride ion erosion on the concrete structures in the marine environment, and carried out the tests study of chloride ion penetration of mineral admixtures concrete. The results show that the resistance of the complex mixed concrete to chloride ion penetration is the strongest. The resistance of single fly ash concrete to chloride ion penetration is poorer than that of non - mixed concrete in the early, and continuously improves and even exceeds in the later.The results can provide some reference for studying the durability of admixed concrete.
出处
《混凝土》
CAS
北大核心
2016年第4期82-85,共4页
Concrete
基金
国家自然科学基金(51278230)
徐州工程学院重点专项基金项目(XKY2012102)
国家建筑材料行业科技创新计划--面上研究项目(2014-M5-4)
关键词
海洋环境
氯离子
混凝土
渗透性能
耐久性
marine environment
chloride ion
concrete
permeability
durability
