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Laboratory and field evaluation of asphalt pavement surface friction resistance

Frontiers of Structural and Civil Engineering 2018年第3期12卷 372-381页

作者： Zhong WU Chris ABADIE Louisiana Transportation Research Center 4101 Gourrier Avenue Baton Rouge LA 70808 USA Louisiana Department of Transportation and Development 5080 Florida Blvd Baton Rouge LA 70806 USA

Pavement surface friction is a significant factor for driving safety and plays a critical role in reducing wet- pavement crashes. However, the current asphalt mixture design procedure does not directly consider friction as a requirement. The objective of this study was to develop a surface friction prediction model that can be used during a wearing course mixture design. To achieve the objective, an experimental study was conducted on the frictional characteristics of typical wearing course mixtures in Louisiana. Twelve wearing course mixtures including dense-graded and open-graded mixes with different combinations of aggregate sources were evaluated in laboratory using an accelerated polishing and testing procedure considering both micro- and macro texture properties. In addition, the surface frictional properties of asphalt mixtures were measured on twenty-two selected asphalt pavement sections using different in situ devices including Dynamic Friction Tester （DFT）, Circular texture Meter （CTM）, and Lock-Wheel Skid Trailer （LWST）. The results have led to develop a procedure for predicting pavement end-of-life skid resistance based on the aggregate blend polish stone value, gradation parameters, and traffic, which is suited in checking whether the selected aggregates in a wearing course mix design would meet field friction requirements under a certain design traffic polishing.

关键词： friction skid resistance polishing PSV LWST micro-texture macro-texture

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Use of Wehner-Schulze machine to evaluate pavement skid resistance:A review

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第5期11卷 896-917页

作者： Francesco Canestrari Eugenio Mariani Lorenzo Paolo Ingrassia Department of Civil and Building Engineering and Architecture Universita Politecnica delle MarcheAncona 60131Italy

Pavement skid resistance plays a crucial role in ensuring road safety and avoiding *** the past,the laboratory evaluation of the skid resistance was carried out by studying only the coarse aggregates of the wearing *** overcome this drawback,the Wehner-Schulze(WS)machine was developed in Germany in the *** equipment,composed of a polishing unit and a measuring unit,has great potential in predicting pavement skid resistance and its evolution over time,but is still little known in the pavement community(especially outside Europe).For these reasons,there is a need of a comprehensive review of the existing technical-scientific literature concerning the use of the WS ***,this paper focuses on the main factors affecting the skid resistance in WS tests,the correlation of WS data with other laboratory test methods and with field skid resistance/polishing,and the available prediction models that have been validated through WS *** critical analysis of the existing literature highlights that it is possible to correlate WS data with typical skid resistance field measurements as well as WS polishing with traffic polishing,but further efforts are needed in this *** work should focus especially on open-graded mixtures and innovative asphalt mixtures(e.g.,containing recycled materials and additives).From the perspective of pavement management,based on a theoretical background,the WS test results could be used as starting point for simplified prediction models of the in-situ skid resistance.

关键词： Skid resistance Friction Road safety Asphalt pavement Micro-texture macro-texture

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