影响混凝土结构耐久性的相关因素和控制对策

针对混凝土耐久性受多重因素的影响,对其不同因素探讨对提高混凝土的耐久性能具有很大的现实价值。对此,从冻融环境和硫酸盐腐蚀的角度对该问题进行研究,首先结合不同的原材料和混凝土强度要求,制备试验用的混凝土试件;其次,结合干湿循环试验和冻融试验分别对试件进行试验。通过实验结果发现,水胶比、硫酸钠浓度等混凝土的耐久性有着很大的影响。提出了在实际工程中如何提高混凝土的耐久性提出几点建议,以此为混凝土制备提供借鉴与参考。

Related Factors Affecting the Durability of Concrete Structure and the Control Measures

In view of the effect of multiple factors on the durability of concrete, it is of great practical value to explore the different factors to improve the durability of concrete. In this paper, related factors affecting the durability of concrete structure were studied from the aspects of freeze-thaw environment and sulfate corrosion. At first, combined with the requirements of different materials and the strength of concrete, test specimens were prepared. Secondly, these samples were tested by the dry wet cycle test and freeze-thaw test. The experimental results showed that water-binder ratio and sodium sulphate concentration had a great influence on the durability. Finally, according to the above conclusion, several suggestions on how to improve the durability of concrete in practical engineering were put forward, so as to provide reference for concrete preparation.