Use of carbon fiber reinforced polymer (CFRP) with CFRP anchors for shear-strengthening and design recommendations/quality control procedures for CFRP anchors.

Details

• Creators:
  Jirsa, James O. ; Ghannoum, Wassim M ; Kim, Chang Hyuk ; Sun, Wei ; Shekarchi, William A. ; Alotaibi, Nawaf K. ; Pudleiner, Douglas K. ; Zhu, Jinying ; Lui, Shukui ; Wang, Helen
• Corporate Creators:
  University of Texas at Austin. Center for Transportation Research
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Shear strength
  • Girders
  • Fiber reinforced concrete
  • Carbon fibers
  • Reinforced concrete bridges
  • Fiber reinforced polymers
  • Bridge anchorages
  • Anchors (Structural connectors) CFRP
  • Carbon Fiber Reinforced Polymers
  • Shear
  More +
• Publication/ Report Number:
  FHWA/TX-16/0-6783-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  University of Texas at Austin. Center for Transportation Research
• Abstract:
  The objective of the study was to demonstrate the feasibility of using bi-directional layouts of CFRP for shear ; strengthening of bridge girders. In a previous project (0-6306), it was demonstrated that uni-directional CFRP ; strips and CFRP anchors improved the shear strength of reinforced concrete elements. Because the data on the bidirectional ; layout of CFRP was limited, additional work carried out to understand the behavior and design of CFRP ; strips and anchors for bridge elements subjected to large shear forces. The tests indicated that bi-directional CFRP ; layouts did not consistently improve the shear capacity but the loads at first shear cracking increased (20 to 40 % ; over the loads for uni-directional layouts of T-beams and less than 10% for pile cap girders), which improved ; serviceability by reducing crack widths and improving the stiffness of the members. Anchor installation is critical ; to shear strengthening so quality control procedures are needed to make sure that material used and installation ; procedures meet design requirements.
• Format:
  PDF
• Funding:
  0-6783
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/32131/dot_32131_DS1.pdf
• File Type:
  [PDF - 21.91 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:e0dda15a3f120a96b52a7d865f967b735b62ee34bd8a73107ddc13b68190ce4eeddfcc882b03e4fcb16f24aa806f7825d7c7ea1342ef827d98e421a8105652ba