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Title: The Benefit of Ground Penetration Radar Thicknesses for Back-Calculation Using FWD Data
Accession Number: 01476275
Record Type: Component
Availability: Transportation Research Board Business Office 500 Fifth Street, NW Abstract: As part of the effort to establish a material property library for mechanistic-empirical pavement design in California using CalME software, two local county roads near Davis, California were tested with a Falling Weight Deflectometer (FWD) in order to back-calculate in-situ stiffness for various materials. Ground penetrating radar (GPR) scans were used to provide true layer thickness data for every FWD drop location. These data provide an opportunity to evaluate the benefits of having a large number of true layer thickness data during stiffness back-calculations as opposed to a few cores. Specifically, layer stiffnesses were back-calculated using different layer thickness inputs: one with actual layer thickness for each drop and the other with fixed layer thickness averaged over the whole tested segment. The two sets of results were then compared against each other to determine whether there is significant benefit of having accurate detailed GPR data.
Supplemental Notes: This paper was sponsored by TRB committee AFD80 Strength and Deformation Characteristics of Pavement Sections.
Monograph Title: Monograph Accession #: 01470560
Report/Paper Numbers: 13-5178
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Pagination: 16p
Publication Date: 2013
Conference:
Transportation Research Board 92nd Annual Meeting
Location:
Washington DC, United States Media Type: Digital/other
Features: Figures; Photos; References; Tables
TRT Terms: Candidate Terms: Identifier Terms: Geographic Terms: Subject Areas: Highways; Pavements; I22: Design of Pavements, Railways and Guideways
Source Data: Transportation Research Board Annual Meeting 2013 Paper #13-5178
Files: PRP, TRIS, TRB, ATRI
Created Date: Feb 5 2013 12:59PM
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0000-0003-3445-8661