Time-dependent behavior of full-scale self-consolidating concrete precast prestressed girders

Bulent Erkmen, Carol K Shield, Catherine E. French

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

As a part of an ongoing study at the University of Minnesota, self-consolidating concrete (SCC) has been developed successfully with locally available materials from two precast concrete plants for use in precast prestressed bridge girders in the State of Minnesota. Four SCC mixes (i.e., two mixes per plant) were designed, evaluated, and used to cast four SCC precast prestressed bridge girders. Variations in the SCC mixes included cementitious materials (ASTM Type I and Type III cement, and Class C fly ash), natural gravel and crushed stone as coarse aggregate, and several admixtures. In addition to SCC girders, a conventional concrete girder was cast simultaneously on the same precasting bed for each plant. The girders were instrumented to monitor both short-term and long-term performance, which included transfer length, camber, and prestress losses. In addition, companion cylinders were cast to monitor compressive strength and modulus of elasticity over time. The test results indicate that the overall performance of the SCC girders was comparable to that of conventional concrete girders and could be predicted using existing design equations.

Original languageEnglish (US)
Title of host publicationSelf-Consolidating Concrete for Precast Prestressed Applications
EditorsAnton K. Schindler, David Trejo, Robert W. Barnes
PublisherAmerican Concrete Institute
Pages139-154
Number of pages16
ISBN (Electronic)9780870312533
StatePublished - Sep 1 2007
EventSelf-Consolidating Concrete for Precast Prestressed Applications 2007 - At the ACI Fall 2007 Convention - Fajardo, Puerto Rico
Duration: Oct 14 2007Oct 18 2007

Publication series

NameAmerican Concrete Institute, ACI Special Publication
VolumeSP-247
ISSN (Print)0193-2527

Conference

ConferenceSelf-Consolidating Concrete for Precast Prestressed Applications 2007 - At the ACI Fall 2007 Convention
Country/TerritoryPuerto Rico
CityFajardo
Period10/14/0710/18/07

Bibliographical note

Funding Information:
The active support received from each plant and financial support provided by Mn/DOT is gratefully acknowledged. The results and opinions presented herein represent those of the authors and not necessarily those of Mn/DOT or the precasters.

Publisher Copyright:
© 2007 American Concrete Institute. All rights reserved.

Keywords

  • Camber
  • Prestress losses
  • Self-consolidating concrete
  • Transfer length

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