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Accession Number PB2009-115495
Title Structural Behavior of a Prototype Ultra-High Performance Concrete Pi-Girder.
Publication Date Nov 2009
Media Count 146p
Personal Author B. A. Graybeal
Abstract Ultra-high performance concrete (UHPC) is an advanced cementitious composite material which has been developed in recent decades. When compared to more conventional cement-based concrete materials, UHPC tends to exhibit superior properties such as increased durability, strength, and long-term stability. This experimental investigation focused on the structural behavior of a newly developed highway bridge girder cross section, namely the pi-girder. This girder was developed and optimized specifically to exploit the advanced mechanical and durability properties of UHPC. Structural testing was completed on girders and sections of girders so as to investigate the flexural response, the shear response, the transverse flexural response, and the lateral load distribution capabilities of the girder. The knowledge gained through this study present a path forward to a viable structurally-optimized UHPC bridge superstructure system. Further development of the pi-girder system is underway.
Keywords Durability
Dynamic structrual response
Flexural strength
High performance concrete
Highway bridges
Lateral pressure
UHPC(Ultra-high performance concrete)
Ultra-high performance concrete

Source Agency Federal Highway Administration
NTIS Subject Category 50C - Construction Equipment, Materials, & Supplies
89G - Construction Materials, Components, & Equipment
Corporate Author Federal Highway Administration, McLean, VA. Office of Infrastructure Research and Development.
Document Type Technical report
Title Note Final Rept., 2003-2008.
NTIS Issue Number 1004
Contract Number N/A

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