Evaluating prediction models of creep and drying shrinkage of self-consolidating concrete containing supplementary cementitious materials/fillers

Micheal Asaad, George Morcous

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Supplementary cementitious materials (SCMs) and fillers play an important role in enhanc-ing the mechanical properties and durability of concrete. SCMs and fillers are commonly used in self-consolidating concrete (SCC) mixtures to also enhance their rheological properties. However, these additives could have significant effects on the viscoelastic properties of concrete. Existing models for predicting creep and drying shrinkage of concrete do not consider the effect of SCM/filler on the predicted values. This study evaluates existing creep and drying shrinkage models, includ-ing AASHTO LRFD, ACI209, CEB-FIP MC90-99, B3, and GL2000, for SCC mixtures with different SCMs/fillers. Forty SCC mixtures were proportioned for different cast-in-place bridge components and tested for drying shrinkage. A set of eight SCC mixtures with the highest paste content was tested for creep. Shrinkage and creep test results indicated that AASHTO LRFD provides better creep prediction than the other models for SCC with different SCMs/fillers. Although all models underestimate drying shrinkage of SCC with different SCMs/fillers, the GL2000, CEB-FIP MC90-99, and ACI 209 models provide better prediction than AASHTO LRFD and B3 models. Additionally, SCC mixtures with limestone powder filler exhibited the highest creep, while those with class C fly ash exhibited the highest drying shrinkage.

Original languageEnglish (US)
Article number7345
JournalApplied Sciences (Switzerland)
Volume11
Issue number16
DOIs
StatePublished - Aug 2 2021

Keywords

  • Creep
  • Drying shrinkage
  • Fillers
  • Prediction models
  • Self-consolidating concrete
  • Supplementary cementitious materials
  • Viscoelastic properties

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation
  • Engineering(all)
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes

Fingerprint

Dive into the research topics of 'Evaluating prediction models of creep and drying shrinkage of self-consolidating concrete containing supplementary cementitious materials/fillers'. Together they form a unique fingerprint.

Cite this