A numerical method for calculating hygro-thermal deformation of concrete, Part II: application of the calculation method

Title: A numerical method for calculating hygro-thermal deformation of concrete, Part II: application of the calculation method
Author(s): C. Qian, D. Chen, Y. Zhuang
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: 1149 - 1160
Total Pages: 12
Nb references: 12
Language: English

Abstract: Temperature and moisture are responsible for the deterioration processes of concrete structures, and the extensive failures in concrete elements often result from both thermal and moisture simultaneously. In the part I of this study, a numerical calculation method was proposed on the base of the heat and moisture transfer in the porous medium In this part, the validity of the calculation method was verified by two experimental examples. And then, the influences of hygro-thermal physical parameters and structural parameters on the deformation of concrete were investigated numerically using the CTMSoft. The results of numerical experiment imply that evaluating the influence regularity of only a single parameter on the concrete deformation is unscientific and the coupling effect should be considered in the fact that there isn’t a definite relationship between concrete deformation and single parameter. The efficiency of thermal-moisture isolation clapboard and coatings is inconspicuous according to the numerical analysis by imaginary equivalent thickness (EIT) method. The numerical calculation also validated that the neglect of lateral confinement will not result in obvious deviation in tunnel concrete deformation.

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