85. Comparison of heat development and thermal crack risk between SCC and conventional concretes in civil engineering constructions

Title: 85. Comparison of heat development and thermal crack risk between SCC and conventional concretes in civil engineering constructions
Author(s): C. Vogt, K. Wallin, J. Trägårdh, J.E. Jonasson
Paper category : conference
Book title: 5th International RILEM Symposium on Self-Compacting Concrete
Editor(s): G. De Schutter and V. Boel
Print-ISBN: 978-2-35158-047-9
e-ISBN: 978-2-35158-088-2
Publisher: RILEM Publications SARL
Publication year: 2007
Pages: 565 - 570
Total Pages: 6
Nb references: 7
Language: English

Abstract: Finite element simulations were done in ConTeSt Pro on self compacting concrete (SCC) and traditional concrete (TC) compositions with thermal and viscoelastic properties determined on mixtures used in practice. The simulations show that SCC compositions have a faster heat development which can lead to some increased temperature within the construction for thin dimensions. However, in massive constructions the low heat conductivity of concrete is the dominating factor. Therefore, the maximum temperature in the structure will mainly be dependent on thickness and cement content of the concrete. The calculated thermal crack risk for a wall-on-slab- construction is in general lower if using SCC with similar w/c as TC, except for very slim construction where the crack risk is low. If applying a performance based comparison between TC and SCC, both thermal crack risk and maximum temperature in the construction are lower with the SCC composition.

Online publication: 2009-06-16
Publication type : full_text
Public price (Euros): 0.00