ASSESSMENT OF UNCERTAINTY MODEL OF RESTRAINED EXPANSION STRAINS OF FIBER REINFORCED SELF-STRESSING CONCRETE AT THE EXPANSION STAGE

Authors

  • Inessa Pavlovna Paulava Brest State Technical University
  • Irina Vladimirovna Belkina Brest State Technical University
  • Aleksandr Aleksandrovich Lizahub Brest State Technical University

DOI:

https://doi.org/10.36773/1818-1112-2023-132-3-41-47

Keywords:

fiber reinforced self-stressing concrete, restrained expansion strains, self-stressing, volumetric constraint, modified strains development model, model uncertainty

Abstract

The article presents an analysis of existing approaches to predicting the self-strains and stresses of self-stressing concrete. The main premises and equations of the modified strains development model for determining the self-strains and stresses of fiber reinforced self-stressing concrete at the expansion stage. This mutual influence model constrains the elements in three directions. The presented model was verified against the background of experimental data. An assessment of the model uncertainties of the modified strains development model of fiber reinforced self-stressing concrete on the 3rd, 7th, 14th and 28th day of concrete age is estimated.

The developed model is applicable for any composition of self-stressing concrete, as well as for various combinations of dispersed reinforcement.

Author Biographies

Inessa Pavlovna Paulava, Brest State Technical University

Ph.D in Engineering, Associate Professor, Dean of the Faculty of Civil Engineering, Brest State Technical University, Brest, Belarus.

Irina Vladimirovna Belkina, Brest State Technical University

Master of Science in Engineering, Junior Researcher, Research Department, Brest State Technical University, Brest, Belarus.

Aleksandr Aleksandrovich Lizahub, Brest State Technical University

Master of Science in Engineering, Junior Researcher, Research Department, Brest State Technical University, Brest, Belarus.

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Published

2023-12-28

How to Cite

(1)
Paulava, I. P.; Belkina, I. V.; Lizahub, A. A. ASSESSMENT OF UNCERTAINTY MODEL OF RESTRAINED EXPANSION STRAINS OF FIBER REINFORCED SELF-STRESSING CONCRETE AT THE EXPANSION STAGE. Вестник БрГТУ 2023, 41-47.

Issue

No. 3(132) (2023): Vestnik of Brest State Technical University

Section

Civil and Environmental Engineering

License

Copyright (c) 2023 Vestnik of Brest State Technical University

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