Towards an Optical Chemometric Sensor for Anti-Icing Agents on Asphalt Pavement

Benny Thörnberg, Alex Klein-Paste, Wei Zhang

2025

Abstract

To ensure traffic safety during winter, chemical agents are typically used for de-icing and anti-icing. Smarter and more precise dispersion of chemicals, which considers local variations in concentration, has the potential to reduce the total amount applied. This paper presents a study of an optical chemometric sensor capable of measuring the NaCl concentration and the weight of the dispersed solution per square meter. The experiment was conducted in an indoor environment, where seven solutions of tap water and NaCl were poured onto a diffuse surface made of burned clay. Short-wave infrared light was illuminated onto the surface, and the light was diffusely reflected into a spectrometer after passing through the liquid layer twice. Absorption in the liquid layer alone can be extracted by subtracting the background and further modeled using Beer-Lambert's law. Both the concentration of NaCl and the amount of liquid can be computed by fitting an overdetermined equation system. Experimental results show a strong correlation between actual and computed concentrations, as well as between actual and computed liquid quantities. Suppression of ambient light, spectral variations of asphalt, harsh environments, dynamic range, and signal-to-noise ratio are among the challenges for outdoor chemometric sensing of asphalt pavements.

Paper Citation

in Harvard Style

Thörnberg B., Klein-Paste A. and Zhang W. (2025). Towards an Optical Chemometric Sensor for Anti-Icing Agents on Asphalt Pavement. In Proceedings of the 11th International Conference on Vehicle Technology and Intelligent Transport Systems - Volume 1: VEHITS; ISBN 978-989-758-745-0, SciTePress, pages 431-438. DOI: 10.5220/0013272600003941

in Bibtex Style

@conference{vehits25,
author={Benny Thörnberg and Alex Klein-Paste and Wei Zhang},
title={Towards an Optical Chemometric Sensor for Anti-Icing Agents on Asphalt Pavement},
booktitle={Proceedings of the 11th International Conference on Vehicle Technology and Intelligent Transport Systems - Volume 1: VEHITS},
year={2025},
pages={431-438},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0013272600003941},
isbn={978-989-758-745-0},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 11th International Conference on Vehicle Technology and Intelligent Transport Systems - Volume 1: VEHITS
TI - Towards an Optical Chemometric Sensor for Anti-Icing Agents on Asphalt Pavement
SN - 978-989-758-745-0
AU - Thörnberg B.
AU - Klein-Paste A.
AU - Zhang W.
PY - 2025
SP - 431
EP - 438
DO - 10.5220/0013272600003941
PB - SciTePress