Paper Title:
Chemical Shrinkage of Pastes Made with Shrinkage Reducing Admixtures
  Abstract

Shrinkage Reducing Admixtures (SRA) are being used more often in concrete structures in order to better control shrinkage cracks. High-performance concrete, nowadays with large application, has more proneness to crack at very early age due to the lower W/C. In this type of concrete, autogenous shrinkage is usually more important than drying shrinkage. Autogenous shrinkage is due to the volume decrease inherent to binder hydration reactions. The rate of these reactions is influenced not only by the type of binder but also by the presence of chemical admixtures. It is recognized that SRA delay the hydration, being a secondary effect of this type of admixtures. In this work changes on the degree of hydration of cement pastes with SRA and different binders are presented, using the chemical shrinkage test.

  Info
Periodical
Edited by
José Aguiar and Lech Czarnecki
Pages
105-113
DOI
10.4028/www.scientific.net/KEM.466.105
Citation
A. B. Ribeiro, V. Medina, A. Gomes, A. Gonçalves, "Chemical Shrinkage of Pastes Made with Shrinkage Reducing Admixtures", Key Engineering Materials, Vol. 466, pp. 105-113, 2011
Online since
January 2011
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Price
$32.00
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