Assessment and Repair of Fire-Damaged High Strength Concrete: Strength and Durability

Fire-damaged concrete structures' service life and safety are influenced by two key factors, durability and strength. The authors studied aggregate type and concrete strength effects on high-strength concrete (HSC) postfire residual compressive strength in order to develop post-fire repair assessment for fire-damaged HSC structure methodology. Scanning electron microscopy observation, mercury intrusion porosimetry tests, and the rapid chloride-ion penetrability tests were used to investigate microstructure and durability changes. Scanning electron microscopy observation, mercury intrusion porosimetry and dichotomy tests establish the fire-damaged concrete element temperature distribution estimation. The "two-level" method can be used to assess postfire durability and the strip method can be used to assess postfire residual compressive strength according to the estimated temperature distribution. Recommendations for fire-damaged HSC structure repair methodology is given in steps based on assessments.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08991561
• Authors:
  • Yan, Xin
  • Li, Hui
  • Wong, Yuk-Lung
• Publication Date: 2007-6

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 462-469
• Serial:
  • Journal of Materials in Civil Engineering
  • Volume: 19
  • Issue Number: 6
  • Publisher: American Society of Civil Engineers
  • ISSN: 0899-1561
  • EISSN: 1943-5533
  • Serial URL: http://ascelibrary.org/journal/jmcee7

Subject/Index Terms

• TRT Terms: Aggregates; Assessments; Compressive strength; Durability; Fire; High strength concrete; Repairing; Safety; Service life; Temperature
• Uncontrolled Terms: Chloride ion penetration; Fire damage; Mercury intrusion; Scanning electron microscopy
• Subject Areas: Design; Finance; Geotechnology; Highways; Materials; Safety and Human Factors; I32: Concrete;

Filing Info

• Accession Number: 01051731
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 8 2007 10:50AM