提高水工混凝土耐久性的材料优化途径

在水工混凝土中掺入合适的外掺物不仅能够改善混凝土的工作性,而且还能够提高混凝土的耐久性,增加混凝土的使用寿命,特别是在有侵蚀、冻融的环境中。文章对掺引气剂、粉煤灰、磷矿渣、聚丙烯纤维混凝土的抗氯离子渗透性、抗冻性指标进行了试验研究,结果表明:掺加这些材料可有效提高水工混凝土的耐久性。

The material measures on improving the durability of hydraulic concrete

In hydraulic concrete, mixing right materials can improve not only the working performance, but also the durability of the concrete so as to enhance the life-span of the concrete, especially in those easily corroded, freeze-thawed Circumstances. This article carries out the test on the impermeability and frost resistance of concrete mixed into vinsol, fly ash, calcined phospogypsum, polypropvlene fiber. The rsult shows that mixing these materials can efficiently improve the durability of concrete.