Autogenous deformation-induced stress evolution in cementitious materials considering viscoelastic properties

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

Liang, M. (TU Delft Materials and Environment)
Xie, J. (TU Delft Materials and Environment)
He, S. (TU Delft Materials and Environment)
Chen, Y. (TU Delft Materials and Environment)
Schlangen, E. (TU Delft Materials and Environment)
Šavija, B. (TU Delft Materials and Environment)

2024

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.

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

http://resolver.tudelft.nl/uuid:eb98389a-10c5-4e3c-b199-a1de87e81618

https://doi.org/10.1016/j.dibe.2024.100356

Developments in the Built Environment, 17

Institutional Repository

review

© 2024 M. Liang, J. Xie, S. He, Y. Chen, E. Schlangen, B. Šavija