Cement Accelerator is an admixture for the use in concrete, mortar, rendering or screeds. The addition of Cement Accelerator speeds the setting time and thus cure time starts earlier. This allows concrete to be placed in winter without the worry of frost damage .
Typical materials used for acceleration are Ca(NO3)2 and NaNO3. CaCl2 has been very popular, but due to its reinforcement corroding behaviour the use is not recommended any more and in many cases prohibited.
Famous quotes containing the word cement:
“It is fair to assume that when women in the past have achieved even a second or third place in the ranks of genius they have shown far more native ability than men have needed to reach the same eminence. Not excused from the more general duties that constitute the cement of society, most women of talent have had but one hand free with which to work out their ideal conceptions.”
—Anna Garlin Spencer (1851–1931)