Estimating Service Life of In Situ Flexible Pavements in Louisiana Using Pavement Management System Data

Pavement service life (PSL) is an important input in the design of new and rehabilitated pavements. It is also used in pavement management system (PMS) decision tools, life-cycle cost analysis, and in the allocation of available funds. The objective of this study is to determine the PSL of flexible pavements in Louisiana and to compare the actual PSL to the assumed service life in the design phase. To achieve this objective, the variation of pavement condition index (PCI) with pavement age was extracted from the Louisiana PMS. The rate of deterioration of PCI for each pavement section was analyzed for over 11 years of performance from 1998 until 2009. Based on this analysis, it was determined that the average PSL was 16.1, 15.2, and 12.6 years for Family 1, 2, and 3, respectively. In general, the average PSL for all pavement families was lower than the assumed design life of 20 years. Alligator cracking was the controlling failure mechanism in 48% of the pavement sections. Simple performance models were developed to predict PSL and remaining service life (RSL) knowing the age of the pavement and the drop in PCI from the date of construction to a given year.

Language

  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 592-601
  • Monograph Title: Construction Research Congress 2018: Infrastructure and Facility Management

Subject/Index Terms

Filing Info

  • Accession Number: 01683702
  • Record Type: Publication
  • ISBN: 9780784481295
  • Files: TRIS, ASCE
  • Created Date: Oct 4 2018 4:49PM