Use of Magnetic Tomography Technology to Evaluate Dowel Bar Placement

Details

• Creators:
  Yu, Tom ; Tayabji, Shiraz D. ; Crawford, Gary ; Tyson, Sam
• Corporate Creators:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Concrete pavements
  • Dowels (Fasteners)
  • Paving
  • Pavement joints
  • Quality control
  • Quality assurance
  • Pavements, Concrete--Design and construction
  • Dowels
  • Quality Assurance
  • QUALITY CONTROL
  More +
• Publication/ Report Number:
  FHWA-IF-06-002
• Resource Type:
  Brief
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Federal Highway Administration
• Abstract:
  This technical brief describes a project to evaluate the effectiveness and limitation of MIT Scan-2. The use of properly sized dowel bars has been a long-standing recommendation for jointed concrete pavements subject to heavy truck traffic to prevent roughness caused by faulting. Implicit in this recommendation is the assumption that the dowel bars will be placed in proper position and alignment. Misaligned dowel bars can cause joints to lock, which, in turn, can lead to spalling or cracking. Severe misalignment can also cause looseness around the dowel bars, greatly reducing their effectiveness. Proper centering of the dowel bars under the joint is important to provide adequate embedment length on either side of the joint. The full report is available as FHWA-IF-06-006.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/41636/dot_41636_DS1.pdf
• File Type:
  [PDF - 156.56 KB]
• Collection(s):
  Federal Highway Administration
• Main Document Checksum:
  urn:sha-512:58313710ae75623d4927d52d107589336c28469f830c46dbf8da838a3ff9b631114a9f829b32605c920fb50e1348bed73bf988fb3c8940b97f12fc12ae7c31c6