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Thermophysical optimization of specialized concrete pavement materials for collection of surface heat energy and applications for shallow heat storage

Dehdezi, Pejman Keikhaei; Hall, Matthew R.; Dawson, Andrew

Authors

Pejman Keikhaei Dehdezi

Matthew R. Hall

Andrew Dawson



Abstract

There is great potential to use pavement structures to collect and/or store solar energy for the heating and cooling of adjacent buildings, e.g. airport terminals, shopping malls, etc. Therefore, pavement materials comprising both conventional and unconventional concrete mixtures with a wide range of densities, thermal conductivities, specific heat capacities, and thermal diffusivities were investigated. Their thermo-physical properties were then used as inputs to a one dimensional transient heat transport model in order to evaluate the temperature changes at the various depths at which heat might be abstracted or stored. The results indicated that a high diffusivity pavement, e.g. incorporating high conductive aggregates and/or metallic fibres, can significantly enhance heat transfer as well as reduction of thermal stresses across the concrete slab. On the other hand a low diffusivity concrete can induce a more stable temperature at shallower depth enabling easier heat storage in the pavement as well as helping to reduce the risk of damage due to freeze-thaw cycling in cold regions.

Journal Article Type Article
Publication Date Sep 30, 2011
Journal Transportation Research Record
Electronic ISSN 2169-4052
Publisher SAGE Publications (UK and US)
Peer Reviewed Peer Reviewed
Volume 2240
Institution Citation Dehdezi, P. K., Hall, M. R., & Dawson, A. (2011). Thermophysical optimization of specialized concrete pavement materials for collection of surface heat energy and applications for shallow heat storage. Transportation Research Record, 2240, doi:10.3141/2240-13
DOI https://doi.org/10.3141/2240-13
Publisher URL http://trrjournalonline.trb.org/doi/abs/10.3141/2240-13
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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