Case Study on Performance of Pavement Constructed with Modified Binder Meeting Extended BBR and DENT Specifications

Understanding and preventing cracking in flexible pavements is challenging due to the complexity of individual mechanisms and their interaction. Battersea Road in Kingston, Ontario was pulverized and resurfaced using a PG 58-28 binder meeting AASHTO M320, DENT, and Extended BBR specifications, however cracks formed withing 5 years nonetheless. The focus of this study is to assess the performance of this road constructed using enhanced asphalt cement binder specifications and to investigate the causes of pavement cracks which have appeared. Original binder and recovered binder properties from the HL3 surface course after six years of field aging satisfied project specifications. Asphalt cement contens were sufficient and compaction reuirements were achieved. Performance testing (rutting, fatigue, low temperature cracking, and dynamic modulus) on plant-produced mix indicated acceptable properties. As such, it was determined that asphalt cement properties did not adversely affect cracking. Upon further investigation, drainage issues arising from variable permeability within the granular and base materials appear to have contributed to the cracking on Battersea Road. Other factors included separation of the longitudinal centre line joint and differential settlement issues between widened bike lanes and the adjacent pavement. Good binder properties are essential but do not necessarilty ensure cracking performance.

• Corporate Authors:

  Canadian Technical Asphalt Association

  ,   United States 
• Authors:
  • Manolis, S
  • BHUTTA, S
  • Aurilio, V
  • LAVORATO, S
  • Bates, G
• Conference:
  • Proceedings of the Sixth-First Annual Conference of the Canadian Technical Asphalt Association (CTAA): Banff, Alberta
• Publication Date: 2016

Language

• English

Media Info

• Media Type: Print
• Pagination: pp. 237-266.
• Monograph Title: Proceedings of the Sixth-First Annual Conference of the Canadian Technical Asphalt Association (CTAA): Banff, Alberta

Subject/Index Terms

• TRT Terms: Binders; Bituminous materials; Bituminous mixtures; Case studies; Conferences; Cracking; Durability; Flexible pavements; Properties of materials; Test tracks
• Geographic Terms: Canada
• ITRD Terms: 4948: Binder; 4955: Bituminous materials; 4967: Bituminous mixture; 8018: Canada; 8531: Case study; 8525: Conference; 5211: Cracking; 5910: Durability; 2944: Flexible pavement; 5925: Properties; 2789: Test track
• Subject Areas: Highways; Materials; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01647329
• Record Type: Publication
• Source Agency: Transportation Association of Canada (TAC)
• Files: ITRD, TAC
• Created Date: Sep 28 2017 12:25PM