Expansive admixtures in structural grout

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Journal titleConcrete International: Design and Construction
Pages3843; # of pages: 6
SubjectCement and Concrete; admixture; expansion; grout; shrinkage; volume change; Materials Research; Admixtures; Bétons
AbstractShrinkage compensating cements currently used in structural grouts do not provide the required volume stability in some in-service environments. Consequently, some grout manufacturers use expansive admixtures. However, erratic results in the application of the expansive admixtures have been reported. Four proprietary expansive admixtures, two lime-based and two calcium sulfoaluminate- (CSA) based, were investigated to determine their suitability as alternatives for Type K cement in structural grout compositions. The results show that at higher dosages, the CSA-based admixtures provide better shrinkage compensation than either Type K cement or lime-based expansive admixtures. The CSA-based admixtures enable structural grouts to meet the requirements of the more demanding in-service environments.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number36979
NPARC number20358815
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Record identifier6928abd6-a399-4af8-9bf1-096aa8f1c299
Record created2012-07-20
Record modified2016-05-09
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