论文部分内容阅读
氯离子含量是影响钢纤维混凝土耐久性的重要因素之一,为了充分了解不同环境中钢纤维混凝土内氯离子含量的变化,将钢纤维混凝土试块分别置于标准环境、自然环境和模拟海水腐蚀环境等3种不同的环境中,定期测定其中氯离子含量,结果表明:3种不同的环境中,钢纤维混凝土内氯离子的含量总体都呈增加的趋势,且前期混凝土氯离子含量显著增加,增长率明显高于同种环境下的其他阶段;自然状态下和标准养护状态下氯离子含量变化基本相同;同一环境下不同龄期试块内氯离子含量变化可以分为4个阶段,具有明显的阶段性特征。
Chloride ion content is one of the important factors affecting the durability of steel fiber reinforced concrete. In order to fully understand the changes of chloride ion content in steel fiber concrete in different environments, the steel fiber concrete test blocks were placed in standard environment, natural environment and simulated seawater corrosion Environment and other three different environments, the content of chloride ion was measured regularly. The results showed that the content of chloride ion in steel fiber concrete tended to increase in all three environments, and the content of chloride ion in concrete increased significantly, The growth rate was significantly higher than the other stages of the same environment; under natural conditions and standard conservation of chloride ion content changes are basically the same under the same environment in different age samples of chloride ion content can be divided into four stages, with obvious The stage characteristics.