Reduced thermal conductivity and temperature of asphalt pavements
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ID
147592
Owner
PLATIO
Uploaded by
WIPO GREEN Admin
Type
Technology
Source
User uploads
Published
2022/10/17
Updated
2022/11/22
Email Owner
PLATIO
Solar pavements that are load-bearing.
Extreme temperatures can cause asphalt cracking, rutting or even melting. Asphalt pavement temperature depends among other things on the material’s thermal properties. Adaptation measures to hot temperatures include using cool paving materials with low thermal conductivity or high specific heat capacity, or increasing thermal resistance through thick pavement layer design. Researchers in Malaysia have reviewed the state-of-art in different cooling strategies for asphalt pavements. Approaches such as air void content and using low-density materials were found to potentially have a considerable positive effect on the thermal properties of asphalt. Open void structures and exposed surfaces allow air currents to flow through the pavement and reduce heat pressure on the pavement. However, for smaller surfaces more advanced approaches such as photovoltaic pavements and water-filled or air-filled pipes placed within pavements could reduce surface temperature by up to 5.5oC.[1] A few companies, including start-up PLATIO, are now producing solar pavements. They are an expensive option but could have both climate mitigation and adaptation benefits.
Getty Images /© rtyree1
Getty Images /© rtyree1
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