一、前言AN—Ⅱ型早强减水剂在混凝土中的性能和各种影响,以及在预制构件生产中的应用研究结果已在别的文章中讨论。由于AN—Ⅱ减水早强性能,可以用它在常温下代替蒸汽养护。在蒸养工艺中能用它来缩短养护周期,减少静停时间和降低养护温度,并且 I. INTRODUCTION The performance of AN-II early strength water reducers in concrete and various effects, as well as the application of research results in the production of prefabricated components have been discussed in other articles. Due to the early strength of AN-II water reduction, it can be used instead of steam curing at room temperature. It can be used in the steaming process to shorten the maintenance cycle, reduce the static stop time and lower the curing temperature, and