Evaluation of Bonded Overlay and Dowel Bar Retrofit on 1–40

Details

• Creators:
  Hubbard, Tom ; Williams, Gary
• Corporate Creators:
  Oklahoma. Department of Transportation
• Corporate Contributors:
  United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Bonding Concrete Overlays Dowel Bar Retrofit Evaluation Fiber Reinforced Concrete Load Transfer Overlays (Pavements) Retrofitting
• Publication/ Report Number:
  FHWA/OK 99
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Oklahoma
• Edition:
  Construction Report, October, 1998
• Corporate Publisher:
  Oklahoma. Dept of Transportation
• Abstract:
  The Oklahoma Department of Transportation (ODOT) has completed a rehabilitation project on a 1,000-foot-long section of existing jointed PCC pavement. The section is located in the westbound traffic lanes of 1-40, in Canadian County. As jointed PCC pavements age, many develop faults, resulting in poor ride quality (roughness). Faults can be removed, and ride quality restored, by grinding, but this often proves to be only a short-term solution. Longer lasting solutions generally require addressing structural factors, such as void formation in the subgrade and lack of load transfer between slabs. Another common problem associated with aging pavements is loss of surface friction characteristics. Surface friction may be restored by grinding or by placing an overlay. Traditional methods of improving load transfer between slabs generally require saw cutting a section of each slab, removing it, drilling holes into the adjacent slab and fastening dowel bars into the holes with epoxy. The joint then has to re-formed, and new concrete poured to replace the removed section. These methods are labor-intensive and expensive. Work done on the rehabilitated section consisted of retrofitting Load Transfer Units (dowel bars with expansion caps} between the slabs, and placing a thin, bonded, fiber-reinforced PCC overlay. The rehabilitation done on this project has the potential of restoring ride quality, improving load transfer between slabs, and improving surface friction characteristics using a faster, less labor-intensive process. ODOT has not used this method in the past. The construction operations will be evaluated on a constructability standpoint. The completed overlay will be evaluated with the goal of projecting the long-term performance of the rehabilitated section.
• Format:
  PDF
• Funding:
  2404
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:40e6b4c86ddf7299cc252aebbc3991d7a05dbab02ec8edbd26d16db4c03bda3dfe4ae35724a2f5b484a2c1c2b2053fd078240fa896521a2c00bd61c2cf0bb231
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/87961/dot_87961_DS1.pdf
• File Type:
  [PDF - 52.67 MB ]