Title: Chemical versus Physical Acceleration of Cement Hydration
Author(s): Dale P. Bentz, Franco Zunino, and Didier Lootens
Publication: Concrete International
Appears on pages(s): 37-44
Keywords: mixture, temperature, setting, strength
Cold weather concreting often requires the use of chemical accelerators to speed up the cement hydration, setting, and early-age strength development. While calcium chloride is the most commonly used chemical accelerator, recent research using fine limestone powders has indicated their high proficiency for physically accelerating early-age hydration and reducing setting times. This article presents a comparative study of the efficiency of these two approaches.