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.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/08991561
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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
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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