Thermo-hygro-mechanical behavior of early-age concrete deck in composite bridge under environmental loadings. Part 1: temperature and relative humidity

When concrete is cast in the field, the fluctuations of temperature and relative humidity (RH) are very complicated because they are affected by hydration and environmental conditions, especially at early ages. This study evaluates quantitatively the effect of various factors on the changes in tempe...

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Bibliographic Details
Published in:Materials and structures 2011-08, Vol.44 (7), p.1325-1346
Main Authors: Choi, Seongcheol, Cha, Soo Won, Oh, Byung Hwan, Kim, Ick Hyun
Format: Article
Language:English
Subjects:
Age
Applied sciences
Bridge elements
Bridges
Bridges (structures)
Building construction
Building Materials
Buildings. Public works
Civil Engineering
Concretes
Concretes. Mortars. Grouts
Decks
Engineering
Exact sciences and technology
Fluctuation
Machines
Manufacturing
Materials
Materials Science
Mathematical models
Original Article
Processes
Properties and performance of fresh concrete
Relative humidity
Solid Mechanics
Stresses
Theoretical and Applied Mechanics
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Summary:When concrete is cast in the field, the fluctuations of temperature and relative humidity (RH) are very complicated because they are affected by hydration and environmental conditions, especially at early ages. This study evaluates quantitatively the effect of various factors on the changes in temperature and RH that produce strain and stress in early-age concrete decks in composite bridges under environmental loading. To this end, a test member was made, in which temperature was measured. The effects of various factors were evaluated through an investigated theoretical model. The present study provides more realistic insight on the behavior of early-age concrete decks under environmental loading, which can be effectively used for evaluation of volume changes and corresponding stress in composite bridge at early ages.
ISSN:1359-5997
1871-6873
DOI:10.1617/s11527-011-9751-8