A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Use of Wehner Schulze to Predict Skid Resistance of Irish Surfacing Materials
This paper details the first assessment of asphalt mixes used in Ireland using the Wehner Schulze test equipment. The mixes assessed were 10-mm SMA, 14-mm SMA, and hot-rolled asphalt (HRA) made with PSV 62 greywacke aggregate. The Wehner Schulze was developed about 30 years ago in Germany and is currently being considered as a European Standard test method. The equipment used was located at IFSTTAR in Nantes, France. Asphalt test specimens (305 mm x 305 mm x 50 mm) were prepared using a Cooper roller compactor. 225-mm diameter cores were then extracted from the slabs for testing on the WS machine. The results found the 10 mm and 14 mm to have higher friction coefficient values compared with the hot-rolled asphalt. Analysis of the data suggests that this is probably due to differing types of contact between the asphalt surface and the Wehner Schulze polishing rollers and rubber pads used for friction measurement. The investigation suggests that the tire-asphalt surface interface needs further research to help explain both the laboratory and on-site measurement of friction.
Use of Wehner Schulze to Predict Skid Resistance of Irish Surfacing Materials
This paper details the first assessment of asphalt mixes used in Ireland using the Wehner Schulze test equipment. The mixes assessed were 10-mm SMA, 14-mm SMA, and hot-rolled asphalt (HRA) made with PSV 62 greywacke aggregate. The Wehner Schulze was developed about 30 years ago in Germany and is currently being considered as a European Standard test method. The equipment used was located at IFSTTAR in Nantes, France. Asphalt test specimens (305 mm x 305 mm x 50 mm) were prepared using a Cooper roller compactor. 225-mm diameter cores were then extracted from the slabs for testing on the WS machine. The results found the 10 mm and 14 mm to have higher friction coefficient values compared with the hot-rolled asphalt. Analysis of the data suggests that this is probably due to differing types of contact between the asphalt surface and the Wehner Schulze polishing rollers and rubber pads used for friction measurement. The investigation suggests that the tire-asphalt surface interface needs further research to help explain both the laboratory and on-site measurement of friction.
Use of Wehner Schulze to Predict Skid Resistance of Irish Surfacing Materials
Friel, Shaun (author) / Kane, Malal (author) / Woodward, David (author)
2013 Airfield & Highway Pavement Conference ; 2013 ; Los Angeles, California, United States
Airfield and Highway Pavement 2013 ; 817-828
2013-06-18
Conference paper
Electronic Resource
English
Use of Wehner-Schulze machine to evaluate pavement skid resistance: A review
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Essai de polissage Wehner et Schulze
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