The drag-reducingproperty of the compounding system was decreased obviously when they were used at low temperature.
另外，输气温度对减阻效果影响较大，低温时减阻率明显降低。
2
Aminobenzenesulfonic acid super-plasticizer is selected though cement paste test, which be provided with high water-reducingproperty, low slump loss and good compatibility with cement.
通过水泥净浆试验比较选择了减水率高、坍落度损失小、与水泥适应性好的氨基苯磺酸盐高效减水剂；
3
Tests indicate that the product of the invention has certain water reducingproperty and higher water reducing efficiency to cement, and the highest water reducing rate can reach over 20%.