Autogenous deformation-induced stress evolution in cementitious materials considering viscoelastic properties: A review of experiments and models

Minfei Liang*, Jinbao Xie, Shan He, Yu Chen, Erik Schlangen, Branko Šavija

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

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Abstract

Early-age cracking risk induced by autogenous deformation is high for cementitious materials of low water-binder ratios. The autogenous deformation, viscoelastic properties, and stress evolution are three important factors for understanding and quantifying the early-age cracking risk. This paper systematically reviewed the experimental and modelling techniques of the three factors. It is found that the Temperature Stress Testing Machine is a unified experimental method for all these three factors, with a strain-controlled mode for stress evolution, hourly-repeated loading scheme for viscoelastic properties, and free condition for autogenous deformation. Such unified method provides basis for developing various models. By coupling a hydration model for volume fractions of hydrates, a homogenization model for upscaling of viscoelastic properties, and capillary pressure theory for self-desiccation shrinkage, a unified model directly mapping the mix design to the early-age stress can be constructed, which can help optimize the mix design to reduce the early-age cracking risk.

Original languageEnglish
Article number100356
Number of pages19
JournalDevelopments in the Built Environment
Volume17
DOIs
Publication statusPublished - 2024

Keywords

  • Autogenous deformation
  • Cementitious materials
  • Creep
  • Early-age cracking
  • Elastic modulus
  • Relaxation
  • Stress evolution

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