Effect of heavy trucks with large axle groups on asphalt pavement damage

The pavement deterioration over time is caused by a combination of factors; however, traffic loads play a key role in consumption of pavement life. The main objective of this paper is to investigate the relative damage (fatigue and rutting) of asphalt pavements using laboratory and field data by considering various axle and truck configurations. The indirect tensile cyclic load test was used in the laboratory to simulate various axle and truck configurations. Data from the General Pavement Study (GPS-1) in the Long Term Pavement Performance Program (LTTP) were used to investigate the relationship between truck repetitions and the deterioration rate of fatigue cracking and rutting. Damage caused by trucks was determined per tonnage carried to identify the most economical axle and truck configurations. Laboratory results showed that trucks with tridem and multiple axles caused less fatigue damage per tonnage carried as compared to trucks with single and tandem axles. The same could not be said for rutting. Field results were inconclusive for both fatigue and rutting.

Language

  • English

Media Info

  • Pagination: 10p
  • Monograph Title: Loads roads and the information highway: 8th International Symposium on Heavy Vehicle Weights and Dimensions, 14-18 March 2004, Misty Hills Conference Centre, Muldersdrift, Gauteng, South Africa

Subject/Index Terms

Filing Info

  • Accession Number: 01390967
  • Record Type: Publication
  • Source Agency: ARRB
  • ISBN: 1920017305
  • Files: ATRI
  • Created Date: Aug 23 2012 5:10AM