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

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 losses,good pumpability and workability,low cement utilization quantity,high strength and less shrinkage deformation and antifreezing effect,and the polycarboxylic high range water reducer has becoming hot point of admixture application at home and abroad.