RESPONSE OF DIRECT MODELS OF REINFORCED CONCRETE COLUMNS SUBJECTED TO FIRE

An experimental study of the complete response of 1/2.23 and 1/3.00-scale models of a square reinforced concrete prototype column subjected to fire and axial loads is presented. Considerable care was exercised during the stages of construction, instrumentation, and testing of the models in the furnace. The prototype response predicted from the test results for the 1/2.23-scale model showed very good to good agreement with the experimental data for the prototype column. Very good to good similitude was obtained in terms of the crack patterns, load-deformation characteristics, internal temperature distributions, failure mechanisms, and fire endurance of the 1/2.23-scale model and the prototype. Although it was not possible to scale accurately the temperature-time curve for the 1/3.00-scale model due to the furnace limitations, good to acceptable similitude was obtained for crack patterns, load-deformation charcteristics, and the failure mechanism. Temperature distortions were considered explicitly in the analysis of the model test results. The test results show that, with appropriate care, it is possible to construct and test models subjected to fire up to length scale factors between 1.2.00 and 1/3.00; however, more experimental research is required to establish confidence.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13846957
• Corporate Authors:

  American Concrete Institute

  P.O. Box 19150, Redford Station, 22400 Seven Mile Road
  Detroit, MI  United States  48219
• Authors:
  • Ng, A B
  • Mirza, M S
  • Lie, T T
• Publication Date: 1990-5

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 313-325
• Serial:
  • ACI Structural Journal
  • Volume: 87
  • Issue Number: 3
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-3241
  • Serial URL: http://www.concrete.org/PUBS/JOURNALS/SJHOME.ASP

Subject/Index Terms

• TRT Terms: Axial loads; Columns; Fires; Fracture mechanics; Furnaces; Mathematical models; Reinforced concrete; Scale models; Temperature
• Uncontrolled Terms: Models
• Subject Areas: Bridges and other structures; Highways; I20: Design and Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00494614
• Record Type: Publication
• Report/Paper Numbers: Title No. 87-S32
• Files: TRIS
• Created Date: Jun 30 2004 12:00AM