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Influence of Actual Curing Conditions on Mechanical Properties of Concrete in Bridge Superstructures
Abstract
This article presents the research on the mechanical characteristics of concrete in the construction of three concrete bridges. A system of recording the internal temperature of concrete and automatic control of laboratory ovens was used for specimen curing. This allowed the specimens to be cured under conditions similar to those occurring in the structure. Before the construction, reference blocks were used to define similar curing conditions. Maximum setting temperatures ranged from 47.6 _C to 62.0 _C and had a favorable effect on the properties of the concrete at an early age. For concretes with the use of CEM I cement, after 3 days of curing, the strength obtained was up to 8.2 MPa (23%) higher than that for specimens cured under standard conditions. The modulus of elasticity was higher up to 4.9 GPa (21%). For concrete with the use of CEM III cement, these differences were 26.9 MPa (174%) and 10.3 GPa (64%), respectively. After 7 days of curing, the results were close to each other and after 14, 28, and 56 days, higher values were obtained for specimens cured under standard conditions. The value of the modulus of elasticity of concrete was determined using the direct method according to Eurocode and the standard A method. A test load of the bridge was carried out to verify the modulus values obtained from laboratory tests. The highest consistency (99%) between the theoretical deflections and those measured in the test load was achieved when using the stabilized modulus values obtained on specimens cured under structure conditions in the FEM model. The research confirms the necessity of determining the mechanical characteristics of concrete with taking into account the curing conditions of concrete in the structure. A procedure for determining the mechanical properties of concrete for the correct construction of a bridge is proposed. These results can also be used in the development of a digital twin for bridge management.
Citations
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Authors (5)
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Jakub Krząkała
- Politechnika Śląska
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Piotr Łaziński
- Politechnika Śląska
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Michael Gerges
- University of Wolverhampton
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Grzegorz Grządziela
- TPA Sp. z o.o.
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.3390/ma16010054
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Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
Materials
no. 16,
ISSN: 1996-1944 - Language:
- English
- Publication year:
- 2023
- Bibliographic description:
- Krząkała J., Łaziński P., Gerges M., Pyrzowski Ł., Grządziela G.: Influence of Actual Curing Conditions on Mechanical Properties of Concrete in Bridge Superstructures// Materials -Vol. 16,iss. 1 (2023), s.54-
- DOI:
- Digital Object Identifier (open in new tab) 10.3390/ma16010054
- Sources of funding:
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- European Social Fund as a part of the Silesian University of Technology as a Centre of Modern Education Based on Research and Innovation Project under Grant POWR.03.05.00 00.z098/17-00
- Verified by:
- Gdańsk University of Technology
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