Fatigue resistance of bituminous mixes: variability analysis in the pavement and correspondence with the type testing

The French Mix Design Methodology for Bituminous mixtures relies on the laboratory determination of different characteristics to assess the in situ performances of the materials. The approach using performances of bituminous mixtures has been applied for many years for the structural design of the pavement. So the consistency of this process (laboratory evaluation/prediction of the in situ performances) has been checked selectively. However, the economic importance of the achieved performances of the pavement and the evolution of the mixing, laying and compacting equipment lead to a requirement to periodically examine the correspondence between the characteristics measured on laboratory manufactured samples and those actually obtained in the road materials. This study deals with the relationship between fatigue measured on samples made in laboratory and fatigue of the material in the pavement, taken from cores. A series of large-diameter core samples was extracted on sites featuring asphalt concrete for basecourse or for wearing course. These samples (more than 120) yielded trapezoidal specimens for conducting several fatigue tests so as to derive an estimation of work site variability. A high level of regularity on the site samples was found and a strong level of correspondence between type testing and results from site samples. For the covering abstract see ITRD E157233

• Authors:
  • DELORME, J L
  • DE LA ROCHE, C
  • WENDLING, L
• Publication Date: 2008

Language

• English

Media Info

• Pagination: 7p
• Serial:
  • PROCEEDINGS OF THE 4TH EURASPHALT AND EUROBITUME CONGRESS HELD MAY 2008, COPENHAGEN, DENMARK
  • Publisher: EUROPEAN ASPHALT PAVEMENT ASSOCIATION (EAPA)

Subject/Index Terms

• TRT Terms: Base course (Pavements); Bituminous mixtures; Conferences; Equipment; Fatigue (Mechanics); Mix design; Pavement design; Quality assurance; Road construction; Test procedures; Wearing course (Pavements)
• ITRD Terms: 2990: Basecourse; 4967: Bituminous mixture; 8525: Conference; 3674: Equipment; 5579: Fatigue (mater); 4714: Mix design; 3055: Pavement design; 9123: Quality assurance; 3665: Road construction; 6288: Test method; 2980: Wearing course
• Subject Areas: Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01323195
• Record Type: Publication
• Source Agency: TRL
• Files: ITRD
• Created Date: Dec 22 2010 8:41AM