桥墩抗裂抗腐高性能混凝土试验研究

摘要

Aim to make clear how to make up high performance concrete which can resist the destroy effect of chlorine corrosion and thermo-shrink which are arised to ice-melt salts and cement hydrating heat in north area under winter,several testing on pier-block concrete are carried in this paper. The test results reveals that the anti-thermo-cracking and anti-corrosion concrete can be made up by applying a proper ratio of cement and other additional material,and a modified cement is suitable for making this kind of HPC concrete.%针对北方寒冷地区易受海水或化冰盐侵蚀的桥墩块体混凝土进行配合比试验研究.根据试验分析在不同水胶比中掺人不同组分的矿渣与粉煤灰时混凝土的强度、抗氯盐侵蚀能力及抗裂性能的变化情况.结果表明,混凝土抗裂及抗氯离子侵蚀性能可通过改变胶凝材料中掺合料的比例实现,而采用中热水泥并掺人一定比例的磨细矿渣和粉煤灰,可配制出强度等级满足混凝土规范要求、抗氯离子侵蚀能力强的高性能混凝土.