冻融环境下粉煤灰混凝土的抗侵蚀试验研究

Study on the Anti Erosion of Fly Ash Concrete under Freezing and Thawing Environment

讨论了在不同次数的冻融循环作用下,水灰比不同的混凝土试件在浓度不同的溶液中,抗腐蚀性能的变化,具体表现为试件质量和外观的变化。试验结果表明,在经历同样次数的冻融循环下,混凝土试件在不同溶液中的破坏程度不同。混合溶液对混凝土试件的破坏性最大。而且,试件的水灰比越大,同等条件下,试件的质量损失就越严重。涂抹后防护材料的试件,质量出现了小幅度的升高,试件外观状态良好。受到腐蚀侵害的试件,外观的主要表现为出现细微的裂纹和片状脱落。

In this paper, it discuss the corrosion resistant performance of different cement ratio concrete part in the different solution under the freezing and thawing cycle It＇ s characteristic is the change of the part quality and the appearance. The experiment result shows that under the same freezing and thawing cycle, the concrete part has different damage extent. The mix solution has the biggest dam- age. And ,the Water cement ratio is more and the quality damage is more serious. For the coating parts, the quality of it increase little, and the appearance is good. For the corrosion damage part, the appear- ance of it appears the crack and the flack off.