Automated Laser Spectrographic Pattern Matching for Aggregate Identification

This project will develop and demonstrate the use of a methodology for an automated, continuous, and real-time monitoring of aggregate quality based on pattern matching using a laser spectrographic sensor technology. The project is being carried out in two stages. Work in Stage 1 will focus on establishing the feasibility of the laser spectrographic sensor technology for aggregate quality evaluation. Samples of aggregates in consultation with collaborating state highway agencies will be collected. Each sample will be classified relative to its engineering properties and elemental properties of interest. Laser testing on one of the selected set of aggregates will be undertaken along with chemometric analyses of the spectral output to establish the effectiveness of laser spectral outputs to differentiate patterns or distinctive features. Such features, represented by graphical and mathematical patterns, will be used to assess how well good and poor aggregate materials can be differentiated. Work in the second stage will involve testing and chemometric analyses of additional sets of samples provided by the collaborating highway agencies using the technique developed and refined in Stage 1. Additional necessary adjustments in the analysis methodology will be made. Blank sample testing to determine the effectiveness of the approach to identify problem aggregates will be completed. Engineering and economic analyses of the proposed methodology will be undertaken to develop system requirements for commercialization. The final report will provide all relevant data along with system specifications and guidelines for implementing the technology by state highway agencies.


  • English


  • Status: Completed
  • Contract Numbers:

    Project 20-30, IDEA

  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    American Association of State Highway & Transportation Officials

    444 North Capitol Street, NW, Suite 225
    Washington, DC  United States  20001

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Project Managers:

    Jawed, Inam

  • Start Date: 20091027
  • Expected Completion Date: 0
  • Actual Completion Date: 0
  • Source Data: RiP Project 24034

Subject/Index Terms

Filing Info

  • Accession Number: 01547236
  • Record Type: Research project
  • Source Agency: National Cooperative Highway Research Program
  • Contract Numbers: Project 20-30, IDEA
  • Files: TRB, RiP
  • Created Date: Dec 4 2014 1:00AM