Assessing Fire-Damaged Concrete


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Title: Assessing Fire-Damaged Concrete

Author(s): M. A. Riley

Publication: Concrete International

Volume: 13

Issue: 6

Appears on pages(s): 60-63

Keywords: buildings; concretes; cracking; fires; fire tests; high temperature; isotropy; petrography; General

Date: 6/1/1991

Five flint-aggregate concrete cores taken from existing structures were heated to temperatures exceeding 800 C for two hours, and the final stabilized temperature profile was determined for each specimen. Thin sections were taken longitudinally along the diameter of each specimen and analyzed petrographically. Specific petrographic features were correlated with temperature profiles. Results indicate that thin-section petrography may be useful in determining the temperatures developed in concrete exposed to fire.