摘要
输电线路基础处于盐渍土的服役环境中时,硫酸盐侵蚀对混凝土的破坏是威胁输电线路基础耐久性的一个重要原因。作为一项复杂的物理化学作用,硫酸盐侵蚀机理受胶凝材料、水灰比、侵蚀介质等多种因素影响。本文从物理作用和化学作用两个角度分别阐述了硫酸盐侵蚀对混凝土耐久性破坏的机理,并论述了不同矿物掺合料对混凝土抗硫酸盐侵蚀性的影响。
Sulfate attack is a major factor influencing the durability deterioration of concrete when the foundation of transmission tower is in the saline soil. It's a complicated physical chemical reaction which is affected by many aspects such as cementing materials, water to binder ratio, attack media and so on. This paper briefly explains the mechanism of sulfate attack on concrete physically and chemically, respectively. The impact of different mineral additions is also illustrated.
出处
《商品混凝土》
2014年第8期31-34,共4页
Ready-Mixed Concrete
基金
国家电网公司科技项目"输电线路盐渍土及冻土设计关键技术研究"
关键词
混凝土
硫酸盐侵蚀
掺合料
concrete
sulfate attack
mineral addition
