Structural Behavior and Field-Monitoring of SCC Prestressed Box Beams for Demonstration Bridge

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Title: Structural Behavior and Field-Monitoring of SCC Prestressed Box Beams for Demonstration Bridge

Author(s): R. Burgueño and D.A. Bendert

Publication: Special Publication

Volume: 247

Issue:

Appears on pages(s): 67-76

Keywords: box beam; continuous monitoring; demonstration bridge; flexural behavior; prestressed concrete; self-consolidating concrete (SCC); shear behavior; structural testing

Date: 9/1/2007

Abstract:
A demonstration bridge project in Michigan is allowing the state’s Department of Transportation to evaluate the short- and long-term structural performance of self-consolidating-concrete (SCC) in bridge beams. The M-50/US-127 Bridge over the Grand River (Jackson, Michigan) features SCC prestressed box beams in 3 of its 6 beams. Three SCC mixture proportions are being evaluated against a reference normally consolidated concrete mixture (NCC). Before implementation, performance of the SCC beams was evaluated through full-scale flexure and shear testing to ensure similar performance to the NCC beams. The SCC beams met the nominal design capacities and their performance was essentially the same as the NCC beams. With this validation, the demonstration bridge with its SCC beams was completed in October 2005. A strain and temperature continuous monitoring system was placed on the SCC beams and one NCC beam to evaluate long-term performance. Collected data since December 2005 indicates that the field performance of the SCC beams is similar to the NCC beams.