COMPOSITE SHEAR STUD STRENGTH AT EARLY CONCRETE AGES

Composite action between a reinforced concrete deck and steel girders is usually achieved by making use of welded headed shear studs. The mechanics of shear studs embedded in mature concrete have been thoroughly investigated in the past. However, current literature lacks experimental evidence of steel-concrete interface behavior at early concrete ages. This data is useful in understanding the behavior of bridges under construction. Current testing methods are not suitable for determining response of shear studs embedded in early-age concrete. In order to avoid this limitation, a new pushout test setup has been developed. A total of 24 pushout tests were performed at concrete ages ranging from 4 hr-28 days. Test results were used to develop load-slip curves and strength expressions. In addition, the variation of concrete properties with time and the applicability of the existing code equations for predicting early-age concrete stiffness were examined. Test results revealed that shear transfer is achieved at very early concrete ages and rate of stiffness gain of concrete is greater than that of strength.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339445
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Topkaya, C
  • Yura, J A
  • Williamson, E B
• Publication Date: 2004-6

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 952-960
• Serial:
  • Journal of Structural Engineering
  • Volume: 130
  • Issue Number: 6
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9445
  • Serial URL: http://ascelibrary.org/loi/jsendh

Subject/Index Terms

• TRT Terms: Bridge decks; Composite materials; Girders; Reinforced concrete bridges; Shear strength; Steel structures; Stud connectors
• Uncontrolled Terms: Early concrete ages
• Subject Areas: Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete;

Filing Info

• Accession Number: 00975183
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 3 2004 12:00AM