Title page for ETD etd-05192004-184514


Type of Document Master's Thesis
Author Huang, ManQuan
Author's Email Address mhuang@vt.edu
URN etd-05192004-184514
Title Comparison of Macrotexture Measuring Devices Used in Virginia
Degree Master of Science
Department Civil Engineering
Advisory Committee
Advisor Name Title
Flintsch, Gerardo W. Committee Chair
Al-Qadi, Imadeddin L. Committee Member
Loulizi, Amara Committee Member
Keywords
  • Correlation
  • Texture Measurement
  • Pavement Macrotexture
  • Mean Profile Depth (MPD)
Date of Defense 2004-05-13
Availability restricted
Abstract
This thesis compared macrotexture measurements obtained using the volumetric method (Sand Patch) and three laser-based devices: MGPS system, ICC laser profiler, and Circular Texture Meter (CTMeter). The study used data from three sources: two controlled experiments conducted at the Virginia Smart Road, field data collected on eight newly constructed hot-mix-asphalt (HMA) roadway surfaces, and data collected on airport surfaces at the Wallops flight facility, Virginia.

The data collected at the Virginia Smart Road, a controlled-access two-lane road that includes various HMA and concrete surfaces, was used for the main analysis. The other two sets of data were used for verification and validation of the model developed. The analysis of the data collected at the Virginia Smart Road showed that the CTMeter mean profile depth (MPD) has the highest correlation with the volumetric (Sand Patch) mean texture depth (MTD). Furthermore, texture convexity had a significant effect on the correlation between the measurements obtained with different devices.

Two sets of models for converting the laser-based texture measurements to an estimated MTD (ETD) were developed. One set of equations considered all the data collected at the Virginia Smart Road, and the other excluded the measurements on the Open-Graded Friction Course (OGFC). The developed models were tested using measurements collected at eight roadway sections throughout Virginia and the Wallops flight facility. The model, excluding the OGFC section, was successfully applied to other sites.

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