ISSN: 0090-3973
Published Online: 10 August 2005
Page Count: 11

Estimation of Surface Macrotexture in Hot Mix Asphalt Concrete Pavements Using Laser Texture Data
Meegoda, JN
Professor, New Jersey Institute of Technology, NJ

Rowe, GM
President, Abatech Inc., PA

Jumikis, AA
Supervising Engineer, New Jersey Department of Transportation, NJ

Hettiarachchi, CH
Doctoral Candidate, New Jersey Institute of Technology, NJ

Bandara, N
Research Engineer, Abatech Inc., PA

Gephart, NC
Principal Engineer, New Jersey Department of Transportation, NJ

(Received 5 December 2003; accepted 12 January 2005)

Abstract

This paper describes development of an automated technology to quantify surface segregation seen during construction of hot mix asphalt concrete pavements. Segregation manifested on the surface produces nonuniform surface macrotecture. A laser-based system was used for detection of nonuniform surface macrotexture caused by segregation. Two segregated test sections and a control test section were tested to evaluate the laser texture method. Laser texture data were gathered from three sites, and sand patch and nuclear density tests were performed at 25 ft (7.62 m) intervals along three sections. In addition to the above, visual surveys were performed to confirm the measurements. Based on the test results, it was found that the nuclear density test could not be used to detect surface segregation but it could be used as a confirmation test. Test results from the control section were used to establish a correlation between the sand patch tests and the laser texture data.

Keywords:
surface macrotexture, segregation, air voids, nuclear density, laser texture data, sand patch, asphalt pavement

Paper ID: JTE12343
DOI: 10.1520/JTE12343
ASTM International is a member of CrossRef.