A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Chemical versus Physical Acceleration of Cement Hydration
On a cold winter's day, the sight of a ready mixed concrete truck discharging and placing concrete likely surprises and perplexes the casual observer. Of course, it is only with special precautions that concrete can be successfully delivered, placed, finished, and cured as temperatures approach (and perhaps even dip below) freezing. One of the major implications of producing concrete in cold weather is a delay in its setting times. According to the American Society of Concrete Contractors, calcium chloride is the most efficient and least expensive accelerator used in concrete. It is particularly useful when flatwork is placed in cold weather because both finishing and covering the slab with insulating blankets can be started earlier. The results presented herein have indicated that both CaCl2 and fine limestone powder can function as effective accelerators of cement hydration, setting, and strength development when used as a replacement for fine sand.
Chemical versus Physical Acceleration of Cement Hydration
On a cold winter's day, the sight of a ready mixed concrete truck discharging and placing concrete likely surprises and perplexes the casual observer. Of course, it is only with special precautions that concrete can be successfully delivered, placed, finished, and cured as temperatures approach (and perhaps even dip below) freezing. One of the major implications of producing concrete in cold weather is a delay in its setting times. According to the American Society of Concrete Contractors, calcium chloride is the most efficient and least expensive accelerator used in concrete. It is particularly useful when flatwork is placed in cold weather because both finishing and covering the slab with insulating blankets can be started earlier. The results presented herein have indicated that both CaCl2 and fine limestone powder can function as effective accelerators of cement hydration, setting, and strength development when used as a replacement for fine sand.
Chemical versus Physical Acceleration of Cement Hydration
Dale P Bentz (author) / Franco Zunino / Didier Lootens
2016
Article (Journal)
English
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