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Type: Artigo de periódico
Title: Water Reducing Agents Of Low Molecular Weight: Suppression Of Air Entrapment And Slump Loss By Addition Of An Organic Solvent
Author: Rodrigues F.A.
Joekes I.
Abstract: The water reducing properties of solutions containing small amounts of sodium n-dodecylbenzene-sulfonate and acetone are studied. Water reductions up to 28% are obtained in mortars composed by 30% cement and 70% graded sand. Sorptivity coefficients vary between 78 and 380 g m-2 s-1 2 (no admixture: 744 g m-2 s-1 2). Slump loss rates of mortars with admixture are similar to those of the admixturefree ones. Compressive strength after 28 days is roughly 50% higher for the mortars with admixture. Surface tension measurements are used to explain the unexpected efficiency of these solutions. © 1994.
Rights: fechado
Identifier DOI: 10.1016/0008-8846(94)90019-1
Date Issue: 1994
Appears in Collections:Unicamp - Artigos e Outros Documentos

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