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Title: Use of regulated-set cement in cold weather environments
Authors: United States. Army. Office of the Chief of Engineers.
Hoff, G. C. (George C.)
Houston, Billy J.
Sayles, Francis H.
Keywords: Binders (Materials)
Cold weather construction
Concrete curing
Concrete placing
Regulated-set cements
Publisher: Concrete Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: CTIAC report ; no. 16.
Description: Miscellaneous paper
Abstract: This study was conducted to evaluate regulated-set cement as a binder material for concrete when the concrete is to be placed and cured at temperatures as low as 15 F. Concretes made with the regulated-set cement were studied with the following results: (a) The longer freshly mixed regulated-set-cement concrete remains above freezing before exposure to below-freezing temperatures, the greater the subsequent early strength gain; however, considerable strength gain was exhibited by specimens exposed at 15 F immediately after casting. Specimens protected one hour before exposure exhibited almost as much strength at 28 days age as specimens cured at 70 ± 3 F the full time; {b) The heat development in the 3-, 6-, and 12-in.-thick slabs exposed at 15 F immediately after casting peaked in one to two hours at 46.5, 58, and 69 F, respectively, and remained above freezing long enough to gain considerable strength; (c) The introduction of a retarder into the mixture caused an increase in slump and a 13- to 19-percent decrease in 28-day strength in specimens exposed at both 70 + 3 F and 15 F. There was still sufficient strength developed, however, in the specimens exposed at low temperatures to resist freezing damage.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Miscellaneous Paper

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