SBIR Phase I: An In Situ Process Control Device for AsphaltPavements

该小型企业创新研究第一阶段项目将展示一种基于核磁共振（NMR）的现场过程控制设备，用于分析公路行业中使用的沥青路面。 这项建议是基于主要研究者根据战略公路研究计划的合同所做的工作。这项工作显示了NMR如何用于测量纯沥青的物理性质和沥青/骨料混合物（包括芯）的浓度。 本研究将尝试将这项技术扩展到测量和研究沥青和集料混合时发生的反应。 对该反应的研究加上NMR方法的发展，以测量混合物或核心中沥青的物理性质，将允许设计和建造平面磁体NMR系统，该系统将确定路基上沥青路面的数量和物理条件。 在整个项目中开发的设备可用于公路行业中许多密切相关的应用。 确定沥青混合料和核心中的沥青量是一种应用，仅在美国就可以销售数百个单位。 使用平面磁铁系统对路面沥青进行现场分析也可能对路面维护产生深远影响。

This Small Business Innovative Research Phase I project will demonstrate an in situ process control device, based on nuclear magnetic resonance (NMR), for the analysis of asphalt pavement used in the highway industry. This proposal is based on the work the Principal Investigator did under contracts from the Strategic Highway Research Program. That work showed how NMR can be used to measure the physical properties of neat asphalt and the concentration of asphalt/aggregate mixes including cores. This research will attempt to extend this technique to the measurement and study of the reaction that occurs between asphalt and aggregate when they are mixed. The study of this reaction plus the development of NMR methods to measure the physical properties of the asphalt in situ in a mix or core will allow the design and the construction of a flat magnet NMR system that will determine the amount and physical condition of asphalt pavements, in-place, on a roadbed. The device developed in this overall project can be used in a number of closely related applications in the highway industry. The determination of the amount of asphalt in mixes and cores is an application that could result in sales of several hundred units in the United States alone. The use of a flat magnet system for in situ analysis of asphalt in pavement could also have a profound impact on pavement maintenance.