Bond behavior of reinforcing steel in ultra-high performance concrete.

Details

• Creators:
  Yuan, Jiqiu ; Graybeal, Benjamin A.
• Corporate Creators:
  United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development
• Subject/TRT Terms:
  • Ultra high performance concrete
  • Fiber reinforced concrete
  • Reinforcing steel
  • Bond strength (Materials)
  • Reinforcing bars
  • Deformed bars
  • Tensile strength
  • Compressive strength
• Publication/ Report Number:
  FHWA-HRT-14-090
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development
• Abstract:
  Ultra-High Performance Concrete (UHPC) is a relatively new class of advanced cementitious composite ; materials, which exhibits high compressive above 21.7 ksi (150 MPa) and tensile above 0.72 ksi (5 MPa) ; strengths. The discrete steel fiber reinforcement included in UHPC allows the concrete to maintain tensile ; capacity beyond cracking of the cementitious matrix. The combination of the matrix and fiber performance allow ; for a reduction on the development length of reinforcing bar, thus providing the potential for a redesign of some ; structural systems such as field–cast connections between prefabricated bridge elements. The bond behavior of ; deformed reinforcing bar in UHPC is investigated in this study by conducting direct tension pullout tests. Over ; 200 tests were completed and the effect of embedment length, concrete cover, bar spacing, concrete strength, bar ; size and type on bond strength were investigated. It was found that the development length of embedded ; reinforcement in UHPC can be significantly reduced. Guidance on the embedment of deformed reinforcing bars ; into UHPC is provided. ; This report corresponds to the TechBrief titled “Bond Behavior of Reinforcing Steel in Ultra-High Performance ; Concrete” (FHWA-HRT-089).
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28118/dot_28118_DS1.pdf
• File Type:
  [PDF - 2.20 MB]
• Collection(s):
  Federal Highway Administration ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:4883ba1c4aff28e47ab2365c67475f032881379ad3ec850cf915c3d3420dc55c286a37474605f833842a8bba69b1523ece870867b2a04f358040d113a527fbb6