Measurement of water transport from saturated pumice aggregates to hardening cement paste

Pietro Lura, Dale P. Bentz, David A. Lange, Konstantin Kovler, Arnon Bentur, Klaas Van Breugel

Research output: Contribution to journalArticlepeer-review

Abstract

In internal water curing of High Performance Concrete, it is fundamental to know how and when the water contained in the internal curing agent is released into the hydrating cement paste. In this study, X-ray absorption measurements showed that considerable transport of water from saturated pumice stone to hydrating cement paste with water/cement ratio 0.3 took place in the first days after casting and covered a distance of at least 4 mm. As a consequence, the total amount of water released by the lightweight aggregates, rather than the spatial distribution of the aggregates, is in this case the crucial factor to avoid self-desiccation shrinkage at early-age.

Original languageEnglish (US)
Pages (from-to)861-868
Number of pages8
JournalMaterials and Structures/Materiaux et Constructions
Volume39
Issue number9
DOIs
StatePublished - Nov 2006

Keywords

  • Autogenous strain
  • Curing
  • High-performance concrete
  • Shrinkage

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials

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