Category: Completed Projects
Group: Ultra-High Performance Concrete (UHPC)
Subject: Bond
State: District of Columbia Abstract:
Key Words: Ultra-high performance concrete, UHPC, fiber-reinforced concrete, reinforcing bar, bond strength, anchorage, development length, splice length
Specific ABC aspect:
Budget (USD):
Project length:
Project Starting Year: 2014
Project Completion Year: 2014
View Bond-Behavior-of-Reinforcing-Steel-in-Ultra-High-Performance-Concrete-report.pdf
Go to: http://www.trb.org/main/blurbs/171551.aspx
Go to: https://www.fhwa.dot.gov/publications/research/infrastructure/structures/bridge/14090/14090.pdf
Group: Ultra-High Performance Concrete (UHPC)
Subject: Bond
State: District of Columbia 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.
Key Words: Ultra-high performance concrete, UHPC, fiber-reinforced concrete, reinforcing bar, bond strength, anchorage, development length, splice length
Specific ABC aspect:
Budget and Timeline
Budget (USD):
Project length:
Project Starting Year: 2014
Project Completion Year: 2014
Primary Sponsor
Federal Highway Administration (FHWA)
1200 New Jersey Avenue, SE
Washington, DC 20590 USA
Primary Performing Organization
Federal Highway Administration (FHWA)
1200 New Jersey Avenue, SE
Washington DC 9 20590 USA
PI: Benjamin Graybeal
(202) 493-3122
benjamin.graybeal@dot.gov
Other Documents
View Bond-Behavior-of-Reinforcing-Steel-in-Ultra-High-Performance-Concrete-report.pdf
Other Related URLs
Go to: http://www.trb.org/main/blurbs/171551.aspx
Go to: https://www.fhwa.dot.gov/publications/research/infrastructure/structures/bridge/14090/14090.pdf
