Modeling early age tensile creep and shrinkage of concrete

M. D. D'Ambrosia, D. A. Lange

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Creep and shrinkage of concrete were studied under constant load and restrained conditions during the first week after casting. Concrete behavior was characterized by a uniaxial test that measures shrinkage deformation and restrained shrinkage stress. The extent of stress relaxation by tensile creep was determined using superposition analysis. The experimental measurements were compared with current creep and shrinkage models to assess their validity for early age prediction. The ACI 209 equation for creep is currently not applicable to early age, but modifications are proposed that fit a database of early age behavior. The B3 model has been previously modified to accommodate early age creep, and this modification was employed in the current study. Test results for normal concrete with different w/c ratios are discussed.

Original languageEnglish (US)
Title of host publicationShrinkage and Creep of Concrete
EditorsN.J. Gardner, Jason Weiss
PublisherAmerican Concrete Institute
Pages349-366
Number of pages18
ISBN (Electronic)9780870311789
StatePublished - Mar 1 2005
Event2005 Shrinkage and Creep of Concrete Symposium at the 2005 ACI Spring Convention - New York, United States
Duration: Apr 17 2005Apr 20 2005

Publication series

NameAmerican Concrete Institute, ACI Special Publication
VolumeSP-227
ISSN (Print)0193-2527

Conference

Conference2005 Shrinkage and Creep of Concrete Symposium at the 2005 ACI Spring Convention
Country/TerritoryUnited States
CityNew York
Period4/17/054/20/05

Keywords

  • Creep
  • Early age
  • Modeling
  • Restrained drying
  • Shrinkage

ASJC Scopus subject areas

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

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