Evaluation and Measurement Method for Texture Depth of Exposed-Aggregate Cement Concrete Pavement Surface Based on Digital Imaging Technique

Abstract:

In order to study the surface characteristics of exposed-aggregate cement concrete pavement, the measurement mechanism of surface texture depth was analyzed by using digital image technique. Based on the principle of least square and Table curve 3D software, two-dimensional digital image of road surface was reconstructed into three-dimensional space surface and a method of evaluating and measuring pavement surface texture depth was put forward. With this method， digital image samples were calculated and the results were compared with the results of conventional measurement method. The results indicate that exposed-aggregate cement concrete pavement has excellent road characteristics; there is a good correlation between the digital image technique and the traditional sand patch method and the relative error is less than 7 percent. Thus, the digital image technique is feasible in evaluating and measuring pavement surface texture depth.

• Periodical: Key Engineering Materials (Volumes 460-461)
• Pages: 66-70
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.460-461.66
• Online since: January 2011
• Authors: Chen Ning
• Keywords: Digital Imaging Technique, Evaluation Method, Exposed-Aggregate Cement Concrete Pavement, Measurement Method, Surface Characteristic, Texture Depth

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