Collaborative Research: Use of Novel Heat Spreader Technology for Reduction of High Temperature Related Rutting in Asphalt Pavements

路面吸收的热量会导致路面温度升高和随后的车辙。预防性维修的战略在很大程度上是缺失的，现有的维修方法昂贵且耗能大。另一种策略是在路面下流水，再加上散热器，可以降低路面温度，从而防止车辙。本研究的目的是了解新型散热材料、沥青混合料、管道材料的热性能与随后的道路温度和结构响应之间的相互作用。目标是利用这一认识开发一种合适的散热器和管道的最佳系统，可用于在炎热气候条件下将沥青路面的温度降至最低，并允许收集热能并减少从路面辐射的热量。工作范围包括小尺度模型和大尺度模型的理论和实验工作。小尺度模型的预测结果将被用于建立理论模型，理论预测的结果将通过大尺度模型的试验进行验证。这项研究将有助于智能人行道的设计。从资源利用的角度来看是更可持续的。本科生将通过观察和实验获得这项研究的经验，并通过合作获得研究方面的助理。所有实验步骤都将被记录下来，并使用数字视频进行记录，这将用于本科生和研究生水平的仪器、热传递和流体流动的课堂教学。

Absorbed heat in pavements leads to enhanced pavement temperature and subsequent rutting. Strategies of preventive maintenance are largely missing, and existing methodologies of repair are expensive and energy intensive. An alternative strategy involving flowing water under the pavement coupled with heat spreaders allows reduction in pavement temperature and therefore prevention of rutting. The objective of the this study is to understand the interaction between thermal properties of novel heat spreading materials, asphalt mixture, piping material and the subsequent temperature and structural response of the roadways. The goal is to utilize this understanding to develop an optimum system of appropriate heat spreader and pipes that could be used to minimize the temperature in asphalt pavements under hot climatic conditions, and allow harvesting of heat energy and reduce heat radiated from the pavement. The scope of work consists of theoretical and experimental work with small and large scale models. The results from small scale models will be utilized for building theoretical models, and the predicted results from the theory will be validated with tests on large scale models. This research will help in the design of ?smart pavements? that are more sustainable from a resource utilization standpoint. Undergraduate students will gain experience in this research through the observation and experimentation and also as assistants in research resulting from collaboration. All of the experimental steps will be documented and recorded using digital video, which will be used for undergraduate and graduate level classroom instruction on instrumentation, heat transfer and fluid flow.