Accession Number:

ADA401312

Title:

Off-the-Shelf Antifreeze Admixtures

Descriptive Note:

Technical rept.

Corporate Author:

ENGINEER RESEARCH AND DEVELOPMENT CENTER HANOVER NH COLD REGIONS RESEARCH AND ENGINEERING LAB

Personal Author(s):

Report Date:

2002-04-01

Pagination or Media Count:

38.0

Abstract:

Cold weather places serious constraints on todays concreting operations. As temperatures drop, concrete sets more slowly, takes longer to finish, and gains strength less rapidly. If temperatures dip too low, the risk is that the mixing water will freeze, leading to irreparable damage. Current guidance limits cold-weather protection of fresh concrete to insulation, supplemental heating, and temporary shelters to keep the concrete at or above 5 C throughout the curing process. This paper studies the use of commercial admixtures in combination with one another to depress the freezing point of the mixing water and to allow the concrete to gain strength at below-freezing temperatures without thermal protection.

Subject Categories:

  • Physical Chemistry
  • Ceramics, Refractories and Glass
  • Machinery and Tools

Distribution Statement:

APPROVED FOR PUBLIC RELEASE