Prototype Development: Automated and Continuous Aggregate Sampling and Laser Targeting System

This project will develop and demonstrate the field application of a prototype of an automated real-time quality control aggregate monitoring system based on laser induced breakdown spectroscopy to characterize aggregate properties. Work in Stage 1 will focus on the Sampling and Laser Targeting (SLT) System prototype development in which system hardware will be designed, specified, purchased or fabricated, and tested. The components associated with the laser optics system (including the laser, spectrometer, fiber optic cable, mirrors and lenses, housing with ventilation system and laptop computer) will be integrated into the SLT material flow and dust suppression system. The integrated system will be housed in a movable closed cabinet and tested to ensure that the laser optics system, dust suppression system and material flow system are all functional. If necessary, modifications will be made to resolve design and operational issues. Work in Stage 2 will focus on SLT prototype validation, development and integration of system software, and American Association of State Highway and Transportation Officials (AASHTO) standard development. Laser-calibration tests will be conducted with the integrated prototype system using aggregate samples collected from one or more state departments of transportation (DOTs) (Kansas, New York, Texas) that participated in the previous Ideas Deserving Exploratory Analysis (IDEA) project, National Cooperative Highway Research Program (NCHRP)-150. Samples will be fed through the system and spectrographic data collected. The data will be modeled using multivariate analysis to validate the new prototype system and, if necessary, modifications will be made to resolve design and operational issues. An integrating software package will be developed to enable direct communication between the spectrometer and the modeled data output to provide rapid response to the spectral signal received during actual system operation. A draft Standard of Practice or a draft Test Method on the laser scanning technology will be prepared for submission to AASHTO for consideration. The final report will provide all relevant technical and testing information for the prototype as well as plans for its commercialization and implementation by state DOTs.


  • English


  • Status: Active
  • 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

  • Performing Organizations:

    Chesner Engineering, P.C.

  • Principal Investigators:

    Chesner, Warren

  • Start Date: 20141210
  • Expected Completion Date: 0
  • Actual Completion Date: 0
  • Source Data: RiP Project 38323

Subject/Index Terms

Filing Info

  • Accession Number: 01547527
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 20-30, IDEA
  • Files: TRB, RiP
  • Created Date: Dec 11 2014 1:00AM