聚羧酸系高效减水剂在铁路预制箱梁中的应用

Application of the polycarboxylic high range water reducer on railway precast box beam

介绍了聚羧酸系高效减水剂在高性能混凝土中的应用情况,使用表明聚羧酸系高效减水剂具有减水率高、水泥适应性好、坍落度损失小、可泵性及和易性好、水泥用量低、早期强度高、收缩变形小并兼有防冻作用等一系列优势,已成为国内外外加剂应用的热点。

The author introduces the application situation of the polycarboxylic high range water reducer on high performance concrete. The utilization proves that the polycarboxylic high range water reducer has a series of advantages, such as high water-reducing rate, good cement adaptability, less slump loases, good pumpability and workability, low cement utilization quantity, high strength and less shrinkage deforma- tion and antifreezing effect, and the polycarboxylic high range water reducer has becoming hot point of admixture application at home and abroad.