New Admixtures for Cold Weather Concreting

by Charles J. Korhonen, U.S. Army Cold Regions Research and, Engineering Lab, Hanover, United States,
Edel R. Cortez, U.S. Army Cold Regions Research and, Engineering Lab, Hanover, United States,
Charles E. Smith, Jr., U.S. Army Cold Regions Research and, Engineering Lab, Hanover, United States,



Document Type: Proceeding Paper

Part of: Cold Regions Engineering

Abstract:

Chemicals were tested for their ability to promote strength gain in portland cement concrete at low temperature. The admixtures depressed the freezing point of the mix water and accelerated the hydration of cement at low temperature. Tests were conducted at 20, -5 and -10°C. The results show that low-temperature strength gain of antifreeze concrete can be comparable to that of additive-free concrete cured at room temperature. These additives, so-called 'antifreeze admixtures' have potential for use in the cold regions.



Subject Headings: Construction materials | Strength of materials | Temperature effects | Concrete construction | Freezing | Concrete admixtures

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