Winter Concreting - Canadian Practice

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Subjectconcreting; concrete curing; hygrothermal control; winter; Concrete
AbstractTo illustrate some of the current practices being followed for winter concreting in Canada, the authors have studied three projects located in different areas of the country and involving various sectors of the industry. Methods used by contractors to protect and cure concrete under winter conditions have been described. The paper also discusses some of the techniques employed to ensure quality, such as the heating of the water and aggregates used in the mix, the on-site testing of the concrete mix and certain methods used in monitoring the concrete strengths. The basic principle used on all sites consisted of controlling the temperature of the concrete at the time of placing and for a certain period of time thereafter to ensure the safety of the structure. This practice followed fairly closely the requirements outlined in CSA Standards. The authors conclude that there is a need for a reliable, nondestructive method of on-site testing to monitor strength development to determine when the minimum required strength has been reached and ensure that the concrete is not cured for a period shorter than required or longer than necessary. This would eliminate the present uncertainty and possibly reduce construction time.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number17600
NPARC number20378475
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Record identifier57322a2d-bc30-464d-8b14-2e04ec5b9854
Record created2012-07-24
Record modified2016-05-09
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