Effect of retarders / water reducers on slump loss in superplasticized concrete

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TypeArticle
ConferenceSecond International Conference on Superplasticizers in Concrete: 1981-06, Ottawa, Ont. Canada
ISSN0193-2527
Pages393407; # of pages: 15
Subjectslump tests; water reducing plasticizers; retardants; concrete (materials); workability; concrete admixtures; plasticizers; admixtures; calorimeters; compressive strength; concretes; hydration; mix proportioning; plasticizers; retarders; setting ( hardening); slump tests; water-reducing agents; workability; Admixtures
AbstractSuperplasticized concrete loses its workability within a few hours. The effect of different amounts of admixtures, such as Ca-lignosulfonate, sucrose, Na-gluconate, citric acid, salicylic acid, Na-heptonate and Na-boroheptonate, on the slump loss of concrete containing sulfonated melamine formaldehyde is reported. Of these admixtures, Na-gluconate proved to be the best retarder of slump loss; the influence on setting times and strength development in mortars was also examined.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-1013
NRC number19766
3029
NPARC number20375210
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Record identifier24146a0c-564e-4494-bae5-2015e5ebe684
Record created2012-07-23
Record modified2016-05-09
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