|
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
Durability
Dynamic structrual response
Fiber-reinforced concrete
Flexural response
Flexural strength
Girders
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
|
