Effect of Michigan multi-axle trucks on pavement distress and profile: volume 3.

Details

• Alternative Title:
  Volume 3, Rigid pavements
• Creators:
  Chatti, Karim ; Manik, Anshu ; Salama, Hassan ; Brake, Nicholas ; Haider, Syed W. ; Mohtar, Chadi El ; Lee, Hyung Suk
• Corporate Creators:
  Michigan State University. Pavement Research Center of Excellence
• Corporate Contributors:
  Michigan. Dept. of Transportation. Construction and Technology Division
• Subject/TRT Terms:
  • Pavements
  • Deterioration
  • Live loads
  • Axle load force
  • Tractor trailer combinations
  • Pavements--Deterioration--Michigan
  • Pavements--Live loads
  • Tractor trailer combinations--Axles
• Publication/ Report Number:
  RC-1504
• Resource Type:
  Tech Report
• Geographical Coverage:
  Michigan
• Edition:
  Final report.
• Corporate Publisher:
  Michigan. Department of Transportation
• Abstract:
  With the adoption of the new mechanistic-empirical pavement design method and the employment of axle load ; spectra, the question of evaluating the pavement damage resulting from different axle and truck configurations has ; become more relevant. In particular, the state of Michigan is unique in permitting several heavy truck axle ; configurations that are composed of up to 11 axles, sometimes with as many as 8 axles within one axle group. Thus, ; there is a need to identify the relative pavement damage resulting from these multiple axle trucks. ; The study looked at both flexible and rigid pavement systems, and comprised of three main components: (1) inservice ; pavement performance data; (2) laboratory testing under multiple axles, and (3) mechanistic-empirical ; analyses. The results from in-service pavement performance data indicated that multiple axle groups appear to cause ; less damage in fatigue per load carried for both pavement types, whereas they cause more damage in rutting of ; flexible pavements and roughness for rigid pavements. Laboratory testing of asphalt concrete confirmed that ; multiple axles cause less fatigue damage per load carried, and that rutting is nearly proportional to the number of ; axles within an axle group. Results from flexural concrete beam fatigue testing showed significant variability; ; multiple linear regression analysis (independent variables: stress ratio, stress impulse and initial modulus of ; elasticity) indicated, on average, similar findings to asphalt concrete fatigue for a given stress ratio; however, ; mechanistic analysis showed that multiple axles cause considerable stress reduction leading to significantly lower ; fatigue damage. The mechanistic analysis also showed that multiple axles cause more faulting in rigid pavements. ; Mechanistic analyses of flexible pavements confirmed that multiple axles cause less fatigue damage per load ; carried, and rutting damage that is nearly proportional to the number of axles within an axle group. However, the ; mechanistic-empirical results suggest that the AASHTO Load Equivalency Factors (LEF) for large axle groups may ; be unconservative. Finally, Full scale slab testing to study joint/crack deterioration in plain concrete pavements was ; inconclusive.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/18200/dot_18200_DS1.pdf
• File Type:
  [PDF - 3.67 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:73d134d26fe37c2afb307bbeb02e7d9d9db0c80bf68add72f4a14ac412dcbfd9