Restricted Research - Award List, Note/Discussion Page

Fiscal Year: 2021

252  University of North Texas  (84548)

Principal Investigator: Manzo,Maurizio

Total Amount of Contract, Award, or Gift (Annual before 2011): $ 288,000

Exceeds $250,000 (Is it flagged?): Yes

Start and End Dates: - 2/28/23

Restricted Research: YES

Academic Discipline: Mechanical Engineering

Department, Center, School, or Institute: College of Engineering

Title of Contract, Award, or Gift: Develop Improved Methods for Eliminating Striping on Roadway Surfaces

Name of Granting or Contracting Agency/Entity: Texas Department of Transportation

Program Title: N/A
CFDA Linked: Highway Planning and Construction


1.1.1 (SAM); This research project shall produce meaningful data to assess the feasibility of stripes paint removal from roadways-based laser system and shall produce a working prototype. A vehicle used for road painting job shall be adapted to host a diode-pumped YAG laser at 1064 nm wavelength and beam delivery system. Preliminary laboratory testing shall be made to adjust laser’ parameters such as laser fluence, pulse width, and repetition rate on smooth concrete specimens marked with current standard materials: thermoplastics, water-based paint, and preformed tape. Surface integrity after the use of the laser beam must be checked with Raman spectroscopy and/or photogrammetry techniques in a laboratory setting before in-situ testing. The laser system shall be deployed and used on current smooth and rough marked pavements, to collect data (photogrammetry) which will be documented in a geodatabase. The laser system acquired from IPG Photonics will first be tested in a laboratory setting to adjust parameters such as laser fluence, pulse width, and repetition rate. Then, the laser system will be mounted on a vehicle and photographs will be taken before and after the use of the system. Due to the fact that the laser system will only ablate the striping coating on the road (leaving the road surface intact), it is expected that a change in the standard procedures for “Eliminating Existing Pavement Markings and Markers” in TxDOT specification item 667 will be introduced. The proposed technique will gradually replace existent marking removal methods, which will impact positively on the durability of the road surfaces (saving costs) and will reduce vehicular traffic jams (and pollution) due to the less frequent road surface maintenance. The results of the research will be delivered to TxDOT through written reports and video demos of the installation and operation.

Discussion: No discussion notes


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