Title: Controlling Concrete During Hot and Cold Weather

Author(s): John M. Scanlon

Publication: Concrete International

Volume: 19

Issue: 6

Appears on pages(s): 52-58

Keywords: cold weather construction; concretes; curing; hot weather construction; insulation; mix proportioning; quality assurance; quality control;

DOI:

Date: 6/1/1997

Abstract:
Most concrete evaluated in the laboratory is prepared and handles under tightly controlled environmental conditions (moist cured at 73.4 + 3 degrees F) from the time of molding until the moment of test. However, very little concrete is actually mixed, transported, placed, or cured under such laboratory conditions. Problems associated with temperature have been recognized for many years, but evaluation of deteriorated concrete in service verifies that most concrete problems stem from a failure to take appropriate corrective actions during concrete construction in these various adverse environments. This paper is intended to discuss how we may control field concrete so that the results are more like concrete produced in the laboratory.