Predicting field concrete temperature using an integrated model

Title: Predicting field concrete temperature using an integrated model
Author(s): Z. Ge, K. Wang
Paper category : conference
Book title: International Conference on Microstructure Related Durability of Cementitious Composites
Editor(s): W. Sun, K. van Breugel, C. Miao, G. Ye and H. Chen
Print-ISBN: 978-2-35158-065-3
e-ISBN: 978-2-35158-084-4
Publisher: RILEM Publications
Publication year: 2008
Pages: 1125 - 1138
Total Pages: 14
Nb references: 20
Language: English

Abstract: A new model was developed for predicting the temperature development in concrete pavement. In this model, concrete temperature was determined based on the heat of hydration of various cementitious materials under field construction and environmental conditions. The heat of hydration was predicted according to the Arrhenius concept. The heat exchange in concrete pavements was computed with the transient heat transfer mode provided by a commercial computer program, FEMLAB (Finite Element Modelling Laboratory).
Conduction, convention, solar absorption, and irradiation were considered as the pavement boundary conditions. The effects of cementitious materials, concrete mix design, pavement structure design, and environmental conditions were evaluated. The results indicate that the new model well predicted the temperature distributions inside a concrete pavement with time.
The model can be used to optimize concrete mix design, to assess field concrete strength, and to select concrete placement temperature and construction conditions for minimizing the concrete thermal stress.

Online publication: 2009-06-09
Publication type : full_text
Public price (Euros): 0.00