Behavior and Desing of HSC Members Subjected to Axial Compression and Flexure

This paper identifies the fundamental design issues related to the behavior of high-strength concrete (HSC) members with compressive strength up to 124 MPa (18 KSI) subjected to axial compression loads. The findings are based on critical assessment and synthesis of available data, the experience of bridge owners, concrete fabricators, and current bridge design codes from North America, Europe, Australia, and Asia. The paper discusses the various factors believed to affect the design and behavior of HSC compression members, including the fundamental properties of concrete, member geometry, support conditions, main and lateral reinforcement, and type of construction. The significance of modeling of the stress-block, potential early spalling of concrete and reliability of HSAC columns is also discussed. This paper presents the current efforts by the authors to recommend revisions to the AASHTO-LRFD Bridge Design Specifications, which currently limits the compressive strength of concrete to 69 MPa (10 ksi).

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 395-420
  • Monograph Title: Seventh International Symposium on the Utilization of High Strength/High-Performance Concrete
  • Serial:
    • Volume: 1 & 2

Subject/Index Terms

Filing Info

  • Accession Number: 01004582
  • Record Type: Publication
  • ISBN: 0870311808
  • Files: TRIS
  • Created Date: Sep 30 2005 12:31PM