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DEVELOPMENT OF UK PROPIETARY ASPHALT SURFACING SKID RESISTANCE AND TEXTURE

Artamendi, Ignacio, Phillips, Paul, Allen, Bob and Woodward, David (2013) DEVELOPMENT OF UK PROPIETARY ASPHALT SURFACING SKID RESISTANCE AND TEXTURE. In: Airfield and Highway Pavement 2013, Los Angeles. American Society of Civil Engineers. 10 pp. [Conference contribution]

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Abstract

This paper considers the development of proprietary asphalt surfacing properties used in the United Kingdom due to trafficking. The project aimed to determine whether asphalt mixes made with lower PSV aggregate in smaller nominal sized asphalt mixes could provide adequate levels of in-situ performance compared to the traditional use of higher PSV aggregate and 14mm nominal sized mixes. It compared SCRIM and GripTester data from full-scale road trials with laboratory Wehner Schulze laboratory data measured using asphalt laid at the road trial. The proprietary mixes were 14mm, 10mm and 6mm maximum aggregate size made with porphyry and quartz granite aggregate. Based on their PSV these aggregate sources would typically not be used on heavily trafficked roads in the UK. Surface texture was monitored using laser sensor during SCRIM assessment. In-situ testing found good levels of skid resistance for all mixes over the last 4 years since installation. The optimum nominal mix size was 10mm. The 14mm mixes had a noticeable drop in texture depth whereas the smaller nominal size mixes remained relatively unchanged. The Wehner Schulze was found to rank the mixes similar to in-situ measurement in contrast to PSV which did not. A model was developed to predict in-situ skid resistance based on Wehner Schulze data.

Item Type:Conference contribution (Paper)
Faculties and Schools:Faculty of Art, Design and the Built Environment
Faculty of Art, Design and the Built Environment > School of the Built Environment
Research Institutes and Groups:Built Environment Research Institute
Built Environment Research Institute > Studies Allied to Built Environment Research (SABER)
ID Code:26382
Deposited By: Dr David Woodward
Deposited On:30 Jul 2013 15:02
Last Modified:09 Dec 2015 11:13

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