Use of Composite Testing for Evaluating of Keyway Grout for Precast Prestressed Bridge Beams

10.14359/305 ◽  
1997 ◽  
Vol 94 (3) ◽  
Keyword(s):  
Composite Testing ◽  
Bridge Beams

Handling and Shipping of Long Span Bridge Beams

PCI Journal ◽  
1987 ◽  
Vol 32 (6) ◽  
pp. 86-101 ◽  
Author(s):  
George Laszlo ◽  
Richard R. Imper
Keyword(s):  
Long Span ◽  
Long Span Bridge ◽  
Bridge Beams

Chloride Testing of 27-Vear-Old Prestressed Concrete Bridge Beams

PCI Journal ◽  
1992 ◽  
Vol 37 (5) ◽  
pp. 68-79 ◽  
Author(s):  
Valerie E. Murray ◽  
Gregory C. Frantz
Keyword(s):  
Prestressed Concrete ◽  
Concrete Bridge ◽  
Bridge Beams ◽  
Prestressed Concrete Bridge

Structural Design of High-Performance Concrete Bridge Beams

2000 ◽  
Vol 1696 (1) ◽  
pp. 171-178
Author(s):  
Xiaoming (Sharon) Huo ◽  
Maher K. Tadros
Keyword(s):  
Structural Design ◽  
High Performance ◽  
High Performance Concrete ◽  
Highway Bridges ◽  
Major Effect ◽  
Minor Effect ◽  
Bottom Flange ◽  
Prestress Losses ◽  
Bridge Beams ◽  
Creep And Shrinkage

Recently high-performance concrete (HPC) has been used in highway bridges and has gained popularity for its short-term and prospective long-term performances. Benefits of using HPC include fewer girder lines required, longer span capacity of girders, reduced creep and shrinkage deformation, less prestress losses, longer life cycle, and less maintenance of bridges. Research has been conducted on several issues of structural design of HPC bridge beams. The topics discussed include the effects of section properties of prestressed concrete girders, allowable tensile and compressive stresses, creep and shrinkage deformations of HPC, and prediction of prestress losses with HPC. The results from a parametric study have shown that a section that can have a large number of strands placed in its bottom flange is more suitable for HPC applications. The use of 15-mm-diameter prestressing strands allows the higher prestressing force applied on sections and can provide more efficiency in HPC bridges. The research results also indicate that the allowable compressive strength of HPC has a major effect on the structural design of bridges, whereas the allowable tensile stress has a minor effect on the design. Equations for predicting prestress losses based on the experimental and analytical results are recommended. The recommended equations consider the effects of lower creep and shrinkage deformations of HPC.

GPR detection of voids in post-tensioned concrete bridge beams

2002 ◽  
Author(s):  
Antonios Giannopoulos ◽  
Paul Macintyre ◽  
Scott Rodgers ◽  
Mike C. Forde
Keyword(s):  
Concrete Bridge ◽  
Bridge Beams ◽  
Post Tensioned
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