Heat-storage pavement technology

Heat-storage pavement for black ice reduction using embedded phase-change material storage media

This technology is a pavement system designed with heat-storage capabilities by placing metal storage media filled with phase-change materials between the first and second pavement layers above the sub-base.

In winter, black ice often forms on road surfaces, posing significant accident risks, and existing pavement structures have struggled to store sufficient heat to effectively prevent surface freezing.

By utilizing alkane phase-change materials within the storage media that absorb and release heat through state changes based on temperature, this technology can be applied to road surfaces to reduce the formation of black ice on the second pavement layer.

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Key Features:

• A first pavement layer laid over the sub-base and a second pavement layer laid on top to form the road surface
• Metal storage media placed at regular intervals on the first pavement layer, featuring internal containment spaces
• Storage pipes consisting of a carbon nanotube-reinforced hard steel body, including closed ends, openings, and sealing components
• Phase-change materials filled within the storage media's containment spaces, composed of a mixture of tetradecane, tridecane, and pentadecane, which change state according to temperature

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