Equivalency points: Predicting concrete compressive strength evolution in three days

M. Viviani, B. Glisic, K. L. Scrivener, I. F.C. Smith

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


Knowledge of the compressive strength evolution of concrete is critical for activities such as stripping formwork, construction scheduling and pre-stressing operations. Although there are several procedures for predicting concrete compressive strength, reliable methodologies involve either extensive testing or voluminous databases. This paper presents a simple and efficient procedure to predict concrete strength evolution. The procedure uses an experimentally-determined parameter called the Equivalency Point as an indicator of equivalent degree of reaction. Equivalency Points are based on early age concrete deformation and temperature variations. Test results from specimens made from seven concrete types validate the approach.

Original languageEnglish (US)
Pages (from-to)1070-1078
Number of pages9
JournalCement and Concrete Research
Issue number8-9
StatePublished - Aug 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • General Materials Science


  • Compressive strength
  • Hydration
  • Strength prediction
  • Thermodynamic calculations


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