01373261

Component

https://doi.org/10.3141/2306-14

http://scholar.google.com...kson&publication_year=2012

A study was initiated to harmonize the dynamic friction tester and a locked-wheel tester on Florida’s typical open-graded and dense-graded surfaces under various speed conditions. In addition, two texture measuring devices, the circular track meter and a high-speed 64-kHz laser mounted to the locked-wheel tester, were evaluated. These devices were first harmonized at a standard test speed of 40 mph (65 km/h). Because of the increased level of macrotexture in the open-graded mixtures, the open- and dense-graded surfaces were assumed to show different frictional behavior under different speed conditions. As a consequence, the harmonization equations for the open- and dense-graded surfaces were developed separately. Harmonization of different test speeds was also performed for each given test method to allow for converting the friction measured at a range of speeds—30 mph (50 km/h) to 60 mph (95 km/h)—back to that of the standard speed. The flexibility provided by these harmonization efforts is of great practical use and provides an alternative to the international friction index for Florida’s conditions.

01472279

12-0978

English

pp 122–130

2012

Transportation Research Record: Journal of the Transportation Research Board

9780309263016

Print

Figures; Photos; References; Tables

Dense graded aggregates; Friction; Friction tests; Open graded aggregates; Pavements; Standardization; Test procedures; Testing equipment; Texture

Florida

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

TRIS, TRB, ATRI

Feb 8 2012 4:58PM

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• Limits of Agreement Method for Comparison of Pavement Friction Measurement
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• Performance of Field Installations of Next-Generation Concrete Surface
• Precision of Florida Methods for Automated and Manual Faulting Measurements
• Preservation Strategies for Concrete Pavement Network of Washington State Department of Transportation
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• Ten-Year Performance of Full-Depth Reclamation with Expanded Asphalt Stabilization on Trans-Canada Highway, Ontario, Canada