干湿循环对混凝土硫酸盐侵蚀的影响

Influence of the dry-wet circulation on the concrete sulfate attack

硫酸盐侵蚀对混凝土的耐久性有重要影响,但在实际工程中混凝土往往不是处于硫酸盐单一的作用环境中,混凝土往往受到外界环境条件和硫酸盐侵蚀双重因素的作用,如干湿交替等。阐述了国内外对于环境因素中的干湿交替对混凝土硫酸盐侵蚀的研究现状,并通过试验证明了干湿循环对混凝土硫酸盐侵蚀的加速作用,为以后的研究提供一些建议。

Sulfate attack is a very important effect to the concrete durability, however, the environment of concrete is not only sulfate attack, in fact, the concrete sometimes gets two factors of external environment and sulfate attack, such as dry-wet circulation etc.The study elaborates the present research of the concrete sulfate attack at a dry-wet circulation environment and uses experimentation to prove that the dry-wet circulation can accelerate the sulfate attack and provides some ideas for the future research.