铁道科学与工程学报2012，Vol.9Issue(3)：8-12,5.
蒸汽养护对高速铁路轨道板混凝土渗透性的影响
Influence of steam-curing on the permeability of track slab concrete of high speed railway
摘要
Abstract
To uncover the influence of steam - curing on the permeability of track slab concrete which based on cement - slag compound cementitious materials, the surface absorption rate and chloride permeability resistance (6 h charge passed and chloride ions migration coefficient) of track slab concrete under different curing conditions (steam -curing and standard curing) were studied, and the effect of different steam -curing temperature on the hydration degree of compound cementitious materials was also studied. The results show that steam - curing is propitious to increase the water permeability resistance of track slab concrete both in early age (28 d) and late age(56 d) . For chloride permeability resistance of concrete, steam - curing can enhance the early chloride permeability resistance, but has slightly effect at late age. Steam - curing can promote the hydrate process of cement - slag compound cementitious materials remarkably, and it is propitious to increase the density of hydration production and more benefit for the increase of impermeability of compound cementitious materials when the highest curing temperature below 60 ℃ .关键词
蒸汽养护/轨道板混凝土/渗透性/化学结合水Key words
steam - curing/ track slab concrete/ permeability/ non - evaporable water分类
建筑与水利引用本文复制引用
赵健,谭盐宾,李化建,谢永江,易忠来..蒸汽养护对高速铁路轨道板混凝土渗透性的影响[J].铁道科学与工程学报,2012,9(3):8-12,5.基金项目
国家重点基础研究发展计划(“973”计划)项目(2010CB736102) （“973”计划）
国家自然科学基金资助项目(50908229) （50908229）
