Evaluation of the base/subgrade soil under repeated loading : phase II, in-box and ALF cyclic plate load tests [tech summary].

Details

• Alternative Title:
  In-box and ALF cyclic plate load tests : [tech summary] ; LTRC Technical Summary 471
• Creators:
  Abu-Farsakh, Murad Y. ; Chen, Qiming
• Corporate Creators:
  Louisiana Transportation Research Center
• Subject/TRT Terms:
  Base Course (Pavements) Deformations (Mechanics) Geogrids Pavement Performance Pavements, Flexible Pavements--Subgrades Reinforcement (Engineering) Subgrade (Pavements) Surfaces, Deformation Of
• Resource Type:
  Tech Report
• Geographical Coverage:
  Louisiana
• Edition:
  Tech summary.
• Corporate Publisher:
  Louisiana Transportation Research Center
• Abstract:
  The inadequacy of many existing roads due to rapid growth in traffic volume provides a motivation for exploring alternatives to
  
  existing methods of constructing and rehabilitating roads. The use of geosynthetics to stabilize and reinforce paved and unpaved
  
  roadways offers one such alternative. Many studies were conducted to evaluate the improvements associated with geogrid
  
  reinforcement of pavements. It is widely believed that geogrid reinforcement of roadways can extend a pavement’s service life and/or
  
  reduce the pavement’s structural thickness.
  
  Several design methods were proposed for flexible pavements with geogrid reinforced base layers. These methods were either based
  
  on empirical or analytical approaches. Empirical design methods are usually based on obtaining a performance level from a laboratory
  
  model test, which is then extrapolated to the field conditions for design application. The geogrid reinforced design methods based on
  
  analytical solution do not address all the variables that affect the performance of these pavements. This report is part of a research
  
  study on evaluating the benefits of geogrid reinforcement of base layers in flexible pavements.
  
  It presents the findings from large-scale cyclic plate load tests on Accelerated Load Facility (ALF)
  
  sections and sections built inside a test box. Another report presented the findings from laboratory
  
  triaxial tests and finite element analyses.
  
  
• Format:
  PDF
• Funding:
  LTRC Number: 05-5GT ; State Project Number: 736-99-1312
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:bf4c6da5a2b4f87e0f66b3d348e33d1238199aba083113886a988dda8f74045a3de671cdd2520a062a056b6b5078969629041470c5795644aa945c2bf465f152
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24052/dot_24052_DS1.pdf
• File Type:
  [PDF - 228.01 KB ]