The aging of low cement castables
Jul 13,2017
Ordinary low-cement castable rapid aging (spread out into a thin layer at a temperature of 20 ℃, relative humidity of 70% of the environment aging 7 days before and after the ultrasonic map
Show that the aging of the castable can cause the initial setting and final setting of the time delay, but the interval between the two remain unchanged, the amount of castable water, drying or burning
Strength, significant porosity and other properties have no effect. After 2 months and 4 months of castable aging, the castable time of the addition of CAC70 was significantly prolonged. The working time of the aged ingredients was about 1.5 times of that of pure cement.
In the absence of aging, the vibrational flow values of CAC70 and PP134 castables were the same at the same time. After 2 months of aging, the vibrational flow values of castable with CAC70 as the binder decreased greatly with time, while PP134 The vibrational flow value of the castable for the binder decreases slightly with time.
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