它具有掺量低、减水率高的优点，但与水泥适应性较差和坍落度损失大一直是混凝土生产上的难题。
It has high water reducing rate at low dosage whether the adaptability problem with cement and high slump loss are always the point in concrete production.
氨基磺酸系高效减水剂asp的减水率高、坍落度损失小，但价格较高、混凝土保水性差，限制了其应用。
ASP has high water-reducing rate and low slump loss, but it is expensive, and the water-retention of concrete is bad, which limit its application.
聚羧酸系减水剂具有高减水率和抑制混凝土坍落度经时损失的优点，研究开发新型的聚羧酸系减水剂受到国内外广泛关注。
With the merits of higher fluidity effect and preventing concrete mix from slump-loss with time duration, poly-carboxylic acid series water-reducer agent (WRA) has been widely studying.
该混凝土具有流动性大，坍落度损失小，早期强度高的特点，适合于高层、大跨度的现代建筑结构。
The concrete has the characteristics of large fluidity, low slump loss, and high early strength, and it is suitable for the highrise and long-span building structure.
该混凝土具有流动性大，坍落度损失小，早期强度高的特点，适合于高层、大跨度的现代建筑结构。
The concrete has the characteristics of large fluidity, low slump loss, and high early strength, and it is suitable for the highrise and long-span building structure.
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