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:
  Axle Load Force Deterioration Live Loads Pavements Pavements--Deterioration--Michigan Pavements--Live Loads Tractor Trailer Combinations 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.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:73d134d26fe37c2afb307bbeb02e7d9d9db0c80bf68add72f4a14ac412dcbfd9
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/18200/dot_18200_DS1.pdf
• File Type:
  [PDF - 3.67 MB ]