Flexural strength and fatigue of steel fiber reinforced concrete (2004 Hale Boggs deck).

Details

• Creators:
  Eggers, John ; Rupnow, Tyson D.
• Corporate Creators:
  Louisiana Transportation Research Center
• Corporate Contributors:
  Louisiana. Dept. of Transportation and Development ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Flexural strength
  • Bridge decks
  • Fiber reinforced concrete
  • Fiber-reinforced concrete--Louisiana--Testing
  • Fiber-reinforced concrete--Fatigue--Louisiana
  • Flexure
  • Concrete bridges--Floors--Testing
• Publication/ Report Number:
  FHWA/LA/08-438
• Resource Type:
  Tech Report
• Geographical Coverage:
  Louisiana
• Edition:
  Final report; Sept. 1, 2004-Dec. 31, 2007
• Corporate Publisher:
  Louisiana Transportation Research Center
• Abstract:
  Through its history, a variety of wearing surface systems for the orthotropic steel deck of the Luling Bridge (aka Hale Boggs ; Bridge) have been built and studied. The main problem with these systems was they did not last the expected service life (20 ; + years). ; In 1999, a short test section was installed using steel reinforced concrete, and even though the reinforcing steel was not ; optimally designed and exhibited cracks, it is still serviceable. Based on the performance of this test section installed in 1999, ; a new test section was installed in 2004. This new test section is a steel fiber reinforced concrete (SFRC) deck. The ; composition of the deck system is ½ in. of bridge deck steel, a thin (approximately ⅛ in.) layer of epoxy with impregnated ; aggregate and 3½ in. of SFRC. ; This study focused on the evaluation of the steel fiber reinforced concrete that was used in the new test section on the Luling ; Bridge. Test specimens of the same material that was to be used in construction of the wearing surface test section were ; produced. The specimens were then subjected to various test procedures, flexure strength and fatigue, flexural toughness, and ; chloride ion penetration among others. ; One unexpected consequence discovered upon initial testing was that the bending failure mechanism of the composite deck ; system was not in the SFRC, as projected, but in the epoxy layer. Furthermore, repeated load fatigue testing of the specimens ; was inconclusive, but did reinforce the failure mechanism shown in previous results. That being said, no inference to ; projected fatigue life can be made from the laboratory results to the field results.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16785/dot_16785_DS1.pdf
• File Type:
  [PDF - 1.66 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:4c0ad8a2ade7a976de03b72091a552a9fab8e73b56acc0aa588ae2610501268c