Compressive strength estimates for adiabatically cured concretes with the Modified Nurse-Saul (MNS) maturity function

Marios Soutsos*, Fragkoulis Kanavaris

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

The Modified Nurse-Saul function relies on (a) a relationship between concrete compressive strength and the Nurse-Saul maturity index, (b) an “acceleration” factor and (c) a “temperature efficiency” factor. The “acceleration” compresses a certain percentage of hydration or strength development into a smaller time interval. The strength development rate is therefore increased because of the “compression” of the hydration interval. Had the hydration at higher curing temperatures been as efficient in contributing to the compressive strength as at lower temperatures then the “acceleration” factor would be equal to the “compression” factor. Procedures are described to determine these factors from isothermally cured concretes. They are then used in an iterative procedure to predict/estimate the strength development for adiabatically cured concretes. The predictions/estimates are shown to be significantly more accurate than those from the Nurse-Saul and Arrhenius maturity functions.

Original languageEnglish
Article number119236
JournalConstruction and Building Materials
Volume255
Early online date30 Apr 2020
DOIs
Publication statusEarly online date - 30 Apr 2020

Keywords

  • Activation energy
  • Compressive strength
  • Curing temperature
  • Maturity function

ASJC Scopus subject areas

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

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