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

合作研究：利用新型散热器技术减少沥青路面中与高温相关的车辙

• 批准号: 0928397
• 负责人: Rajib Mallick
• 金额: $ 15.77万
• 依托单位: Worcester Polytechnic Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-10-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0928397&HistoricalAwards=false
• 关键词: Collaborative; Research; Use; Novel; Heat

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.

路面吸收的热量会导致路面温度升高和随后的车辙。 预防性维护的战略在很大程度上是缺失的，现有的维修方法是昂贵的和能源密集型的。 另一种策略是在路面下流动水，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，管道材料的热性能和随后的温度和结构响应的道路之间的相互作用。 我们的目标是利用这种理解，开发一个最佳的系统，适当的散热器和管道，可用于最大限度地降低温度在沥青路面在炎热的气候条件下，并允许收集热能，减少从路面辐射的热量。 工作范围包括小型和大型模型的理论和实验工作。 小尺度模型的结果将用于建立理论模型，理论预测的结果将通过大尺度模型的试验进行验证。 这项研究将有助于设计？智能人行道？从资源利用的角度来看，这是更可持续的。 本科生将通过观察和实验获得这项研究的经验，并作为合作研究的助手。 所有的实验步骤将被记录和记录使用数字视频，这将用于本科和研究生水平的课堂教学仪器，传热和流体流动。