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Cementitious bonding agents

From National Research Council Canada

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Affiliation
  1. National Research Council of Canada. NRC Institute for Research in Construction
FormatText, Article
SubjectCement and Concrete; Concrete; Ciments
Abstract
Adhesion of new concrete to old depends on a number of factors, including sur~ face preparation, mechanical compatibility of the two concretes, temperature of the concrete substrate, and ambient temperature conditions at the time the new concrete is placed. Successful bonding also depends on the care exercised in placing the fresh concrete. Some practitioners and building product manufacturers promote the use of bonding agents to augment the bond at the interface. These products reportedly increase adhesion by enhancing wetting and sealing of the concrete substrate, thereby minimizing water loss from the fresh concrete to the substrate. Whether bonding agents effectively improve adhesion bas been debated. Some practitioners contend that they are too often used as substitutes for good concurring conditions and varying fresh concrete slumps.
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  • Construction Specifier 46, no. 12 (December 1993): 110–119.
LanguageEnglish
Peer reviewedYes
IdentifierIRC-P-3578
NRC numberNRCC 37032
NRC-IRC-5075
NPARC number20375232
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Record identifierf190a607-6968-472f-b833-b35a7ce4737e
Record created2012-07-23
Record modified2020-06-06
Date modified: