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:
  • Geogrids
  • Subgrade (Pavements)
  • Base course (Pavements)
  • Pavement performance
  • Reinforcement (Engineering)
  • Pavements--Subgrades
  • Pavements, Flexible
  • Surfaces, Deformation of
  • Deformations (Mechanics)
  • Geogrids
• 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.
  More +
• Format:
  PDF
• Funding:
  LTRC Number: 05-5GT ; State Project Number: 736-99-1312
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24052/dot_24052_DS1.pdf
• File Type:
  [PDF - 228.01 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:bf4c6da5a2b4f87e0f66b3d348e33d1238199aba083113886a988dda8f74045a3de671cdd2520a062a056b6b5078969629041470c5795644aa945c2bf465f152