A study of pavement parameters variability

Road roughness prediction and analysis is of major interest for road engineers. Considering the fact that pavement parameters variability is an important cause of pavement deterioration, some researchers have proposed pavement performance models based on pavement variability functions. This approach is very interesting but unfortunately, little information relevant to pavement parameters variability pattern can be found in available databases and the literature. The proposed paper presents a study done in the context of the development of a new mechanistic-empirical pavement roughness model. For the purpose of this project we made the following hypothesis: Road roughness increase involve permanent and differential deformations which are mainly function of intrinsic material properties variability and the variability associated to construction operations, distress propagation and environment (climate, traffic, etc.). This work is based on a comprehensive pavement parameters characterization of several road construction projects, which was done with the objective of quantifying pavement parameters variability. Pavement parameters include layer thickness, layer density, AC bitumen content, base and subbase gradation criterion and CB. The principal tools used for the analysis are semi-variograms and descriptive statistics. Results are showing some indications that pavement parameters variability has an influence on road roughness. Correlations between characterized parameters variability patterns and initial roughness were also verified.

• Authors:
  • Gagnon, D
  • Dore, G
  • Perraton, D
• Conference:
  • Symposium on Pavement Surface Characteristics [of Roads and Airports], 5th, 2004, Toronto, Ontario, Canada
• Publication Date: 2004

Language

• English

Media Info

• Pagination: 13p

Subject/Index Terms

• TRT Terms: Deformation; Mathematical models; Pavement layers; Pavement performance; Roughness; Surface course (Pavements); Thickness
• ATRI Terms: Deformation; Density; Modelling; Pavement layer; Pavement performance; Road surface properties; Roughness; Thickness
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 01389560
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, ATRI
• Created Date: Aug 23 2012 3:34AM