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Title: Digital Image Processing Techniques for Capturing and Characterizing the Microstructure of Asphalt Concretes
Accession Number: 01124408
Record Type: Component
Availability: Transportation Research Board Business Office 500 Fifth Street, NW Abstract: The main objective of this paper is to present the development of a Discrete Wavelet Transform (DWT)-based approach for quantifying aggregate segregation in asphalt concretes (AC). It implements this approach in analyzing the segregation of nine AC core X-Ray Computed Tomography (CT) images obtained through an automated digital image processing technique. It utilizes a DWT approach for separating coarse from fine aggregates, on the basis of a selected wavelength separating the two sizes. A segregation index (SI) is defined based on the wavelet energy in each group of aggregate particles. The SI was shown to be a high resolution numerical measure of aggregate segregation in the horizontal and vertical directions matching the perceived segregation obtained from the visual inspection of the images. The mean values of the SI along the horizontal and vertical directions give an overall measure of segregation in the sample along these directions.
Monograph Title: Monograph Accession #: 01120148
Report/Paper Numbers: 09-0595
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Zelelew, HabtamuPapagiannakis, A ThomasPagination: 16p
Publication Date: 2009
Conference:
Transportation Research Board 88th Annual Meeting
Location:
Washington DC, United States Media Type: DVD
Features: Figures
(9)
; References
(34)
; Tables
(4)
TRT Terms: Candidate Terms: Uncontrolled Terms: Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials
Source Data: Transportation Research Board Annual Meeting 2009 Paper #09-0595
Files: TRIS, TRB
Created Date: Jan 30 2009 4:50PM
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