initial setting time

Through adding 1% oxyful to oxygenize the calcium sulfite, when the dosage of FGD gypsum is 5%, compared with the gypsum without oxyful, initial setting time prolongs 5.9%, final setting time prolongs 12.5%.

加入1%双氧水氧化脱硫石膏中的亚硫酸钙，与未添加双氧水的水泥凝结时间相比较，5%掺量时，初凝时间延长5.9%，终凝时间延长12.5%。

A New Method for Testing Initial Setting Time of Cements

一种测试水泥初凝时间的新方法

Properties of the slag can be adjusted and initial setting time can be adjusted discretionarily according to the requirements of design and engineering;

性能易调节，初终凝时间可根据设计和施工要求任意调整；

The starting time of setting stage is identical with initial setting time. However, the ending time of setting stage lags behind the final setting time.

通过比较凝结期起止时间和实测的凝结时间，发现凝结期开始时间与初凝时间非常吻合，而凝结期终止时间则明显滞后于终凝时间。

A new method for measuring initial setting time of roller compacted concrete

碾压混凝土初凝时间测试新方法电动势法