Accession Number PB2009-115496
Title Structural Behavior of a 2nd Generation Ultra-High Performance Concrete Pi-Girder.
Publication Date Nov 2009
Media Count 114p
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 further development and structural testing 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 full-scale girders to investigate the transverse flexural response and the longitudinal joint structural behavior. The 2nd generation pi-girder system surpassed the AASHTO LRFD Bridge Design Specification demands for which it was designed.
Keywords Bridge design
Dynamic structrual response
Fiber-reinforced concrete
Flexural response
Flexural strength
High performance concrete
Highway bridges
Lateral pressure
Precast concrete
Prestressed concrete
Transverse flexural response
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., 2007-2009.
NTIS Issue Number 1004
Contract Number N/A

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