SUBJECTIVE AND MECHANICAL ESTIMATIONS OF PAVEMENT SERVICEABILITY FOR RURAL-URBAN ROAD NETWORKS

To manage paved road networks efficiently, highway agencies require comprehensive, periodic inventory or pavement evaluation data. These data should be reliable, quickly and easily acquired, and manageable. The results of a study that involved subjective and mechanical measurements of both the roughness and structural adequacy of a combined rural-urban road network are presented. A new high-speed, computerized unit was used to make the mechanical measurements of roughness, and panel ratings were used for the subjective measurements. Structural adequacy was both rated by a panel and mechanically measured with a Dynaflect. Very good correlations were obtained between panel ratings and measured roughness for both urban and rural sections. The relations obtained and the resource and time requirements involved demonstrate that, by using such methods, highway agencies can quickly and efficiently inventory the serviceability of paved road networks. Ratings of structural adequacy did not correlate with measured deflection. The results suggest that, whereas surface distress or condition can be measured by panel ratings, structural adequacy can only be measured by mechanical means. (Author)

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 31-36
  • Monograph Title: Pavement distress, evaluation, and performance
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00302407
  • Record Type: Publication
  • ISBN: 0309029627
  • Files: TRIS, TRB
  • Created Date: Jan 30 1980 12:00AM