A New Approach to Cold-Weather Concreting. Ice Engineering. Number 28, August 2001

Since the 1930s, the primary approach to cold-weather construction has been to avoid freezing of the concrete during the curing period. The contractor must ensure that the concrete is delivered warm to the construction site, is placed on thawed surfaces, and is kept warm by insulation or by heated e...

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Bibliographic Details
Main Author: Korhonen, Charles J.
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
Format: Text
Language:English
Published: 2001
Subjects:
Snow
Ice and Permafrost
Civil Engineering
Construction Equipment
Materials & Supplies
*CONCRETE
*FREEZING
*COLD WEATHER
TEMPERATURE
ARMY RESEARCH
CHEMICALS
SITES
COLD REGIONS
SURFACES
CONSTRUCTION
ENGINEERING
ICE
THAWING
HEAT
ANTIFREEZES
Cold Regions Research and Engineering Laboratory
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/ADA407414
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA407414
Description
Summary:Since the 1930s, the primary approach to cold-weather construction has been to avoid freezing of the concrete during the curing period. The contractor must ensure that the concrete is delivered warm to the construction site, is placed on thawed surfaces, and is kept warm by insulation or by heated enclosures. The U.S. Army Cold Regions Research and Engineering Laboratory (CRREL) has spent much of the past decade studying alternate approaches to cold-weather concreting and has embarked on two parallel paths to introduce a new cold-weather concreting approach to the construction industry an approach that allows fresh concrete to develop strength while its internal temperature is below freezing. This is made possible by adding chemical to fresh concrete to depress its freezing point and to accelerate its hydration rate. The original document contains color images.

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