Determination of Thermophysical Parameters Involved in The Numerical Model to Predict the Temperature Field of Cast-In-Place Concrete Bridge Deck - Publication - Bridge of Knowledge

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Determination of Thermophysical Parameters Involved in The Numerical Model to Predict the Temperature Field of Cast-In-Place Concrete Bridge Deck

Abstract

The paper dealswith a concept of a practical computationmethod to simulate the temperature distribution in an extradosed bridge deck. The main goal of the study is to develop a feasible model of hardening of concrete consistent with in-situ measurement capabilities. The presented investigations include laboratory tests of high performance concrete, measurements of temperature evolution in the bridge deck and above all, numerical simulations of temperature field in a concrete box bridge girder. A thermal conductivity equation in the author’s program, using finite dierence method has been solved. New approach for identification of the model parameters and boundary conditions (heat transfer coecients) has been proposed. The numerical results are verified by means of a wide set of experimental tests carried out on three stages of the extradosed bridge studies. A high agreement between the concrete temperature distribution in the time and space domain was obtained. The temperature history of concrete hardening, supplemented with maturity method equations, made it possible to estimate an early-age compressive strength of the cast-in-place concrete. The proposed solution could be applied in a Structural Health Monitoring system for concrete objects.

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DOI:
Digital Object Identifier (open in new tab) 10.3390/ma12193089
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Details

Category:
Articles
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
Materials no. 12, pages 1 - 30,
ISSN: 1996-1944
Language:
English
Publication year:
2019
Bibliographic description:
Kuryłowicz-Cudowska A.: Determination of Thermophysical Parameters Involved in The Numerical Model to Predict the Temperature Field of Cast-In-Place Concrete Bridge Deck// Materials. -Vol. 12, iss. 19 (2019), s.1-30
DOI:
Digital Object Identifier (open in new tab) 10.3390/ma12193089
Verified by:
Gdańsk University of Technology

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