CHARACTERISTICS OF SURFACE TEXTURE ON GAP-GRADED ASPHALT PAVEMENT AND ITS INFLUENCE TO THE SKID RESISTANCE

The area of gap-graded asphalt pavement is increased to improve safety of expressways. The surface texture has been measured by volumetric method like sand patching and generally such method does not give us the detail of characteristics of texture and its influence to the skid resistance exactly. Therefore, stationary model of laser profilometer was used to measure the profile of gap-graded asphalt pavement and new method was applied to analyze the characteristics of texture. The findings of this study are that firstly, the amount of tire penetration into the surface texture is the decisive factor of skid resistance on gap-graded asphalt pavement, the amount of tire penetration reaches at certain level even if PDI get bigger, and it makes skid resistance to have same tendency. Therefore, proper profile depth is found to satisfy both enough skid resistance and durability of pavement. Secondly, microtexture also plays important role to decide the magnitude of skid resistance depending on the nature. Analyzing skid resistance, BPN, Profile Depth Index(PDI), we can evaluate the influence of microtexture volumetrically. For the covering abstract in this conference see IRRD number 872978. (A)

• Corporate Authors:

  Transportation Association of Canada (TAC)

  401-1111 Prince of Wales Drive
  Ottawa, Ontario  Canada 
• Authors:
  • SHIMENO, S
  • Kawamura, K
• Conference:
  • PROCEEDINGS OF THE XIIITH WORLD MEETING OF THE INTERNATIONAL ROAD FEDERATION, TORONTO, ONTARIO, JUNE 16 TO 20, 1997
• Publication Date: 1997

Language

• English

Media Info

• Features: References;

Subject/Index Terms

• TRT Terms: Bitumen; Conferences; Gap graded aggregates; Pavements; Profilometers; Skid resistance; Texture
• Geographic Terms: Canada
• ITRD Terms: 4963: Bitumen; 8018: Canada; 8525: Conference; 4597: Gap graded aggregate; 2955: Pavement; 6103: Profilometer; 3031: Skid resistance; 3053: Surface texture
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00752250
• Record Type: Publication
• Source Agency: Transportation Association of Canada (TAC)
• Files: ITRD
• Created Date: Sep 18 1998 12:00AM