Laser Scanning Aggregates for Real Time Property Identification

The goal of this project is to develop a portable system for determining the mineralogical composition of aggregates in the field for quality control. Laser Induced Breakdown Spectroscopy (LIBS), which involves firing a laser pulse at a sample to determine its composition from light spectra emitted and interpreted using a spectrometer and a custom program, was chosen to be the basis of the portable system. Along with system development, results were analyzed via Partial Least Squares Regression (PLSR). The current analysis technique utilizes split-training and y-scaling to analyze spectra data and performs well for most samples. The results obtained from the LIBS system was compared with X-ray Fluorescence (XRF) data provided by the New Jersey Department of Transportation (NJDOT).

Language

  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 77p

Subject/Index Terms

Filing Info

  • Accession Number: 01650912
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-NJ-2016-006
  • Files: TRIS, ATRI, USDOT, STATEDOT
  • Created Date: Oct 25 2017 4:49PM