Modeling rigid pavement smoothness for mechanistic empirical design

Smoothness is the most critical pavement performance indicator for the highway user and should be included in any pavement design procedure so that acceptable ride quality can be provided to the traveling public over the design period. Models of smoothness were developed for Jointed Plain Concrete Pavement (JPCP) and Continuously Reinforced Concrete Pavement (CRCP) for use in the new 2002 Design Guide procedure developed under National Cooperative Highway Research Program (NCHRP) 1-37A. These models have a proper functional form and are based on Long-Term pavement Performance (LTPP) data collected on a large number of sections throughout North America. They are functionally rational and include the initial as-constructed IRI, as well as key distress types that may develop over time. In addition they include site factors such as subgrade soil type, climate, and age, as these seem to independently affect smoothness. Sensitivity analyses show the models to be reasonable, and their use directly in the 2002 design procedure also shows them to produce reasonable predictions for a range of pavement designs.


  • English

Media Info

  • Pagination: 309-21
  • Monograph Title: Proceedings of the International Conference on Highway Pavement Data, Analysis and Mechanistic Design Applications, September 7-10 2003, Columbus, Ohio: volume 2

Subject/Index Terms

Filing Info

  • Accession Number: 01390919
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Aug 23 2012 5:08AM