High Temperature Mechanical Properties of High-Strength Fly Ash Concrete with and without Fibers

There is an increasing interest in the use of high-strength fly ash concrete (HFAC) due to growing environmental awareness. Knowledge of high temperature material properties is critical for evaluating the fire response of structures. This paper presents the effect of temperature on mechanical properties of plain HFAC and polypropylene fiber-reinforced HFAC (HFAC-P) with a compressive strength of approximately 70 MPa (10.1 ksi). A series of strength tests were carried out to evaluate compressive strength, tensile strength, stress-strain response, and elastic modulus of HFAC and HFAC-P in a 20 to 800°C (68 to 1472°F) temperature range. Results from mechanical property tests indicate that both HFAC and HFAC-P experience significant degradation in compressive and tensile strength, and elastic modulus with temperature. Data generated from tests are used to develop simplified relations for expressing strength and elastic modulus of HFAC and HFAC-P as a function of temperature. The proposed relations can be used as input data in computer models for evaluating fire response of structures made of HFAC with and without fibers.

• Record URL:
  http://www.concrete.org/Publications/InternationalConcreteAbstractsPortal.aspx.aspx?m=details&i=51684164
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13846872
• Supplemental Notes:
  • Abstract reprinted with permission from the American Concrete Institute.
• Authors:
  • Khaliq, Wasim
  • Kodur, Venkatesh
• Publication Date: 2012

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 665-674
• Serial:
  • ACI Materials Journal
  • Volume: 109
  • Issue Number: 6
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-325X
  • Serial URL: https://www.concrete.org/publications/acimaterialsjournal.aspx

Subject/Index Terms

• TRT Terms: Concrete structures; Fibers; Fire resistance; Fly ash; High strength concrete; Mechanical properties; Modulus of elasticity; Polypropylene
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01469571
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 17 2013 1:47PM