摘要
新疆地区属于严寒气候,室外冻融变化频繁,干旱、盐碱土地面积大,土壤和地下水中含有很高的硫酸盐,该地区砂石料场的砂石骨料具有较高碱活性。不论是抗冻性、抗侵蚀性,还是抑制混凝土-碱骨料反应和抗裂性,在混凝土结构设计和施工过程中,都必须高度重视该地区环境下混凝土耐久性的要求。高性能混凝土的组成材料与普通混凝土基本相同,但高性能混凝土对水泥、超细掺和料、高效减水剂和砂石骨料的要求有所不同或更加严格。
Because the sand and gravel aggregate in Xinjiang region has high alkali reactivity as the large saline-alkali land area and the weather in this region is cold,the frost resistance,corrosion resistance,concrete-alkali aggregate reaction and crack resistance must be paid great attention to in the design and construction of concrete structure.The composition of high-performance concrete and ordinary concrete is basically the same,but the high-performance concrete has more strict demands on the cement,ultra-fine admixture,super water-reducing agent and gravel aggregate.
出处
《水力发电》
北大核心
2010年第2期73-75,共3页
Water Power
关键词
混凝土
高寒地区
强腐蚀
选择
新疆
concrete
cold region
strong corrosion
selection
Xinjiang region
