GROUND BASED HYPER SPECTRAL SENSING OF PAVEMENT CONDITIONS-A CASE STUDY

摘要

Spectroscopy is a technique for examining materials that involves looking at how matter interacts with electromagnetic radiation. Advances in spectroscopy have resulted in the development of portable equipment that may be utilised in the field. This research shows how spectral reflectance curves for various asphalt pavements change as a function of pavement quality, its age and oxidation of bitumen. Analytical Spectral Devices (ASD) spectro-radiometer was used to collect field spectrum data, using centrifuge extractor bitumen content was determined and a Dynamic Shear Rheometer (DSR) was used to determine viscosity of the extracted bitumen samples. As a consequence, the reflectance of newly created asphalt surfaces was found to be lower than that of old asphalt surfaces, and a linear relationship was discovered between reflectance fluctuations and the increase in viscosity of the pavement due to ageing. The suggested technique enables for the prediction of spectral curve modification with pavement quality, taking into account ageing and viscosity.