Feasibility Study of Scanning Laser Systems for Measuring Seal Coat Quality

Details

• Creators:
  Liu, Richard ; Sun, Wei ; Chen, Yuanhang ; Chopra, Pankaj ; Cai, Yu ; Li, Jing ; Ren, Wei ; Chen, Xuemin
• Corporate Creators:
  University of Houston. Department of Electrical and Computer Engineering
• Corporate Contributors:
  Texas Department of Transportation. Research and Technology Implementation Office ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Field Tests Lasers Measuring Instruments Pavement Condition Scanners Seal Coats Texture
• Publication/ Report Number:
  FHWA/TX-08/0-5310-2
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; San Antonio (Texas)
• Edition:
  Sep. 1, 2006 – Aug. 31, 2007
• Corporate Publisher:
  Texas. Department of Transportation
• Abstract:
  In this project the researchers developed a methodology, two hardware systems, and software to evaluate seal coat quality at highway speed. The methodology is based on mean profile depth (MPD) measured by high speed laser devices. The two hardware systems are texture laser device and scanning laser device. A high-speed texture laser and a 3-D scanning laser system based on auto-synchronized scanning technology are developed in this project. A mean profile depth algorithm based on ASTM standard has been developed and embedded into both point laser and scanning laser devices. The two different devices are mounted on a measurement van and field-tested in pavement sections in San Antonio, Texas. The results of these devices are compared with the MPD value measured by outflow meter. The results are proved to be accurate and can be used in a high-speed measurement in harsh environment. A criterion of automatically identifying a pavement section for flushing, shelling or normal surface conditions is also developed using the field data from both devices. This project is jointly performed by the University of Houston (UH) and the University of Texas at San Antonio (UTSA). UH is responsible for hardware, software and field tests of the laser devices, while UTSA is responsible for identifying test sections and performing CMT and outflow meter measurements.
• Format:
  PDF
• Funding:
  0-5310
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:b406802ad0fa89537d3278a92d87643180f49675368b6e976a89f9047798d0cdf7f64b7ce1eeda45d93cb7d1d90ed9ba5003f22f0e8fd70cd18f3e28e2fab029
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/88905/dot_88905_DS1.pdf
• File Type:
  [PDF - 2.48 MB ]