How to Achieve a Higher Modulus of Elasticity

This paper describes how the modulus of elasticity of concrete is an important mechanical property since it affects the camber of prestressed concrete beams at the release of prestressing strands and deflections under superimposed dead and live loads. The modulus is closely related to the properties of the cement paste, stiffness of the selected aggregates, and the method of determining the modulus. The standard test method is ASTM C 469—Static Modulus of Elasticity and Poisson’s Ratio of Concrete in Compression. One approach to increase the modulus of elasticity of concrete for a given mix design is to increase the coarse aggregate content of the mix. In doing so, the concrete producer might be required to adjust other mix constituents to satisfy placement and workability requirements.

• Corporate Authors:

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  National Concrete Bridge Council

  Portland Cement Association, 5420 Old Orchard Road
  Skokie, IL  United States  60077-1083
• Authors:
  • Myers, John J
• Publication Date: 2005

Language

• English

Media Info

• Media Type: Print
• Features: Figures;
• Pagination: 1p
• Monograph Title: HPC Bridge Views
• Serial:
  • HPC Bridge Views
  • Issue Number: Issues 1-38
  • Publisher: National Concrete Bridge Council
  • Serial URL: http://www.hpcbridgeviews.org

Subject/Index Terms

• TRT Terms: Admixtures; Cement paste; Coarse aggregates; Curvature; Live loads; Mechanical properties; Mix design; Modulus of elasticity; Prestressed concrete; Prestressed concrete bridges
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01110932
• Record Type: Publication
• Files: TRIS, USDOT
• Created Date: Sep 24 2008 10:38AM