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

• 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

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.