Evolution of Micro-Surfacing and the Application of a 0/8 mm Gap-Graded Micro-Surfacing

Micro-surfacing (ECF) is generally made from ultra thin mixtures primarily used for road maintenance in order to restore the road surface characteristics and to extend its service life by many years. Recently, road maintenance needs have increased due to traffic increases and the need for increased safety for the road users. A study was developed to improve the ECF performance. The first part of the study focused on the ECF early age behaviour, whatever the type of aggregate used. The approach consisted of determining the bitumen parameter that was responsible for the cohesion build-up and then on expanding the types of aggregates that could be used for the production of ECF. Thus, various approaches for developing performing ECF are available to the formulator in order to solve the actual problems faced. The second part of the paper presents the implementation of new formulas within a specific project that required a thin, high skid resistance, and durable maintenance layer. Moreover, road reopening delays constraints required excellent early age cohesion from the surface. The improvements achieved through the application of a 0/8 mm fiber-based, gap-graded micro-surfacing in terms of ease of application, skid resistance, and roughness are presented.

• Corporate Authors:

  Canadian Technical Asphalt Association

  ,   United States 
• Authors:
  • Le Bec, S
  • Paquin, Y
  • Proteau, M
• Conference:
  • Proceedings of the Forty-Ninth Annual Conference of the Canadian Technical Asphalt Association (CTAA) - Montreal, Quebec
• Publication Date: 2004

Language

• English

Media Info

• Media Type: Print
• Pagination: pp. 237-259.
• Monograph Title: Proceedings of the Forty-Ninth Annual Conference of the Canadian Technical Asphalt Association (CTAA) - Montreal, Quebec

Subject/Index Terms

• TRT Terms: Bituminous mixtures; Conferences; Construction; Emulsions; Gap graded aggregates; Polymers; Repairing; Skid resistance; Smoothness; Structural strengthening; Surfacing; Wearing course (Pavements)
• Uncontrolled Terms: Micro
• Geographic Terms: Canada
• ITRD Terms: 4993: Bitumen emulsion; 4967: Bituminous mixture; 8018: Canada; 8525: Conference; 3655: Construction; 3071: Evenness; 4597: Gap graded aggregate; 9045: Micro; 7482: Polymer; 3635: Repair; 3031: Skid resistance; 3096: Strengthening (pavement); 2972: Surfacing; 2980: Wearing course
• Subject Areas: Construction; Highways; I22: Design of Pavements, Railways and Guideways; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 01569341
• Record Type: Publication
• Source Agency: Transportation Association of Canada (TAC)
• Files: ITRD, TAC
• Created Date: Jul 10 2015 2:32PM