Self-consolidating concrete for prestressed applications - phase I : girder fabrication and pre-erection performance.

Keske, Samuel D.; Barnes, Robert W.; Schindler, Anton K.; Dunham, Emily L.; Johnson, Brandon R.; Ellis, Morgan A.; Auburn University. Highway Research Center

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Self-consolidating concrete for prestressed applications - phase I : girder fabrication and pre-erection performance.

2015-04-01
By Keske, Samuel D. ; Barnes, Robert W. ; Schindler, Anton K. ; ...

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Creators:

Keske, Samuel D. ; Barnes, Robert W. ; Schindler, Anton K. ; Dunham, Emily L. ; Johnson, Brandon R. ; ... More +

Keske, Samuel D. ; Barnes, Robert W. ; Schindler, Anton K. ; Dunham, Emily L. ; Johnson, Brandon R. ; Ellis, Morgan A. Less -
Corporate Creators:

Auburn University. Highway Research Center
Corporate Contributors:

United States. Federal Highway Administration ; Alabama. Dept. of Transportation

United States. Federal Highway Administration ; Alabama. Dept. of Transportation Less -
Subject/TRT Terms:

[+]

Bridge Construction Compressive Strength Creep Elasticity (Mechanics) Field Tests Girders Laboratory Tests Prestressed Concrete Bridges Self Compacting Concrete Shrinkage
Publication/ Report Number:

FHWA/ALDOT 930-738
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

Auburn University. Highway Research Center
Abstract:

Prior to statewide acceptance of self-consolidating concrete (SCC) in precast, prestressed bridge member production, the Alabama Department of Transportation sponsored an investigation of the material to be performed by the Auburn University Highway Research Center. Two parts of that research are presented in this report: a laboratory investigation of fresh stability test methods to quantify the unique fresh behavior of SCC, and a field investigation of as-built material and pre-erection structural behavior in the first full-scale SCC girders produced in Alabama for an in-service bridge. During the laboratory investigation, the Visual Stability Index, Sieve Stability, and Surface Settlement tests correlated most strongly to multiple measures of hardened concrete uniformity; a testing protocol utilizing these test methods is recommended. Use of SCC in girder production was clearly beneficial. The utilized SCC mixture exhibited practically the same compressive strength, slightly reduced elastic stiffness, and increased time-dependent deformation (creep and shrinkage), at least in representative cylinders. However, the differences were expectable due to differences between the utilized SCC and vibrated concrete (VC). Also, SCC-girder transfer lengths, initial cambers, initial prestress losses, pre-erection time-dependent camber growth, and pre-erection time-dependent prestress force were found to be acceptably similar and at least as predictable as in companion, geometrically identical VC girders. Therefore, pre-erection behavior of SCC should not restrict its use in the production of precast, prestressed girders using current design and production procedures.
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

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urn:sha256:580c977a8839ced28c157a0f46169412f5908b8ebbebdd4d2d6cbceecd3c60b5
Download URL:

https://rosap.ntl.bts.gov/view/dot/29516/dot_29516_DS1.pdf
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Self-consolidating concrete for prestressed applications - phase I : girder fabrication and pre-erection performance.

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