Computational thermal homogenization of concrete

authored by: T. Wu, I. Temizer, P. Wriggers
Abstract: Computational thermal homogenization is applied to the microscale and mesoscale of concrete sequentially. Microscale homogenization is based on a 3D micro-CT scan of hardened cement paste (HCP). Mesoscale homogenization is carried out through the analysis of aggregates which are randomly distributed in a homogenized matrix. The thermal conductivity of this matrix is delivered by the homogenization of HCP, thereby establishing the link between micro-mesoscale of concrete. This link is critical to capture the dependence of the overall conductivity of concrete on the internal relative humidity. Therefore, special emphasis is given to the effect of relative humidity changes in micropores on the thermal conductivity of HCP and concrete. Each step of homogenization is compared with available experimental data.
Organisation(s): Institute of Continuum Mechanics
External Organisation(s): Bilkent University
Type: Article
Journal: Cement and Concrete Composites
Volume: 35
Pages: 59-70
No. of pages: 12
ISSN: 0958-9465
Publication date: 16.09.2012
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Building and Construction, General Materials Science
Electronic version(s): https://doi.org/10.1016/j.cemconcomp.2012.08.026 (Access: Unknown)
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