Abstract
This paper considers extending the role of asphalt concrete pavements to become solar heat collectors and storage systems. The majority of the construction cost is already procured for such pavements and only marginal additional costs are likely to be incurred to add the necessary thermal features. Therefore, asphalt concrete pavements that incorporate aggregates and additives such as limestone, quartzite, lightweight aggregate, copper slag, and copper fibre are designed to make them more conductive, or more insulative, or to enable them to store more heat energy. The resulting materials are assessed for both mechanical and thermal properties by laboratory tests and numerical simulations and recommendations are made in regard to the optimum formulations for the purposes considered.
Highlights
Worldwide, asphalt pavement surfacings provide the vast majority of roads, parking lots and airport runways
The test results of asphalt mixtures made with the limestone, copper slag, and quartzite are presented and analysed as a group, while the results for Light Weight Asphalt (LWA) are discussed separately
Eq.6 where: Nf = Number of Load application to failure; k1,k2 = Constants depending on the mixture characteristics; ε = Resultant strain due to applied stress; The fatigue lines are plotted in Figure 4, with the enumerated values of Eq.6 for the five materials given on the figure
Summary
Asphalt pavement surfacings provide the vast majority of roads, parking lots and airport runways. Given their dark colour, asphalt pavements can heat up to 70°C due to solar irradiation in summertime because of their excellent heat-absorbing properties (Chen, Wei et al 2009). Many modern industrial and commercial buildings have a high heating and/or cooling load This load has a high, potential, environmental impact. There is a strong pressure to obtain the necessary energy from a renewable source Because such buildings frequently have large adjacent paved areas (roads, vehicle parking lots), there is great potential to collect and/or store solar energy using these adjacent surfaces which are already required and funded for operational purposes (e.g. from a transportation or parking budget). Because such buildings frequently have large adjacent paved areas (roads, vehicle parking lots), there is great potential to collect and/or store solar energy using these adjacent surfaces which are already required and funded for operational purposes (e.g. from a transportation or parking budget). de Bondt (2003) reported a full scale trial of such a ‘Pavement Energy System’ (PES), installing pipes close to a pavement surface, thereby optimizing the pavement to collect solar energy in a Pavement Heat Collection (PHC) configuration
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
