RESEARCH ARTICLE


Research on Shrinkage and Shrinkage Models of Reinforced Concrete Specimens



Guilin Zhang1, 3, Pang Chen2, *, Xiaoyu Si2, Jingde Wang1, 3, Yang Han1, 3
1 State Grid Hebei Electric Power Co., Ltd. Construction Company, Hebei, China
2 School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China
3 Hebei Electric Power Engineering Supervision Co., Ltd, Hebei, China


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Creative Commons License
© 2022 Zhang et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China; Tel: +8613284632829; E-mail: hitchenpang@126.com


Abstract

Introduction:

It is very important to accurately predict the shrinkage of reinforced concrete specimens to ensure structural safety.

Methods:

In this study, a total of 36 reinforced concrete specimens were used with a size of 150mm×150mm×450mm to examine concrete strength grades and longitudinal reinforcement ratios on the shrinkage of reinforced concrete specimens using shrinkage tests.

Results:

The results showed that the concrete strength increased from 35MPa to 58.2MPa, and the shrinkage rate of concrete decreased by about 30%. The ratio of reinforcement increased from 0 to 2.01%, and the shrinkage rate of concrete decreased by about 40%.

Conclusion:

The experimental results were compared with existing shrinkage models of reinforced concrete, and a modified shrinkage calculation model of reinforced concrete was proposed.

Keywords: Reinforced concrete, Specimen, Concrete shrinkage, Shrinkage model, Prediction, Concrete strength.