Creep of High-Strength Normal and Lightweight Concrete: Fid-Bau Portal

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Creep of High-Strength Normal and Lightweight Concrete

E. C. Vincent / B. D. Townsend / R. E. Weyers / C. E. Via

The objectives of this study were twofold: first to determine the laboratory time-dependent deformation of the high strength concrete mixtures used in the prestressed beams in the Pinner's Point and Chickahominy River bridges, and second, to compare standard laboratory test results with fabricated bridge beam time-dependent deformations. Each set of specimens was tested under laboratory exposure conditions after undergoing the standard cure or an accelerated cure with the time-temperature match cure system. The creep results of the HSC mixture were compared with the seven most current prediction models and the LTHSC mixture with four prediction models. The results of this study may be used to determine the best existing model of the models evaluated to predict prestress losses for HSC and LTHSC mixtures. The results may also be compared with the results of the field assessment task of a concurrent project.

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Creep of High-Strength Normal and Lightweight Concrete

E. C. Vincent / B. D. Townsend / R. E. Weyers / C. E. Via

The objectives of this study were twofold: first to determine the laboratory time-dependent deformation of the high strength concrete mixtures used in the prestressed beams in the Pinner's Point and Chickahominy River bridges, and second, to compare standard laboratory test results with fabricated bridge beam time-dependent deformations. Each set of specimens was tested under laboratory exposure conditions after undergoing the standard cure or an accelerated cure with the time-temperature match cure system. The creep results of the HSC mixture were compared with the seven most current prediction models and the LTHSC mixture with four prediction models. The results of this study may be used to determine the best existing model of the models evaluated to predict prestress losses for HSC and LTHSC mixtures. The results may also be compared with the results of the field assessment task of a concurrent project.

Creep of High-Strength Normal and Lightweight Concrete

E. C. Vincent / B. D. Townsend / R. E. Weyers / C. E. Via

The objectives of this study were twofold: first to determine the laboratory time-dependent deformation of the high strength concrete mixtures used in the prestressed beams in the Pinner's Point and Chickahominy River bridges, and second, to compare standard laboratory test results with fabricated bridge beam time-dependent deformations. Each set of specimens was tested under laboratory exposure conditions after undergoing the standard cure or an accelerated cure with the time-temperature match cure system. The creep results of the HSC mixture were compared with the seven most current prediction models and the LTHSC mixture with four prediction models. The results of this study may be used to determine the best existing model of the models evaluated to predict prestress losses for HSC and LTHSC mixtures. The results may also be compared with the results of the field assessment task of a concurrent project.

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Title:

Creep of High-Strength Normal and Lightweight Concrete

Contributors:

E. C. Vincent (author) / B. D. Townsend (author) / R. E. Weyers (author) / C. E. Via (author)

Publication date:

2004

Size:

77 pages

Type of media:

Report

Type of material:

No indication

Language:

English

Keywords:

Construction Equipment, Materials, & Supplies , Highway Engineering , Creep properties , High strength concretes , Deformation , Mixtures , Beams(Supports) , Bridges(Structures) , Shrinkages , Loads(Forces) , Stresses , Strains , Design , Laboratory tests

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