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Title:

Field Air Permeability Testing in Nondestructive Condition Assessment of Damaged Concrete Structures
Cover of Field Air Permeability Testing in Nondestructive Condition Assessment of Damaged Concrete Structures

Accession Number:

01025638

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

This article discusses the use of in-situ air permeability testing in evaluation of fire damage to a concrete structure. In-situ air permeability measurements were made on the surface of concrete members damaged by exposure to fire. Non-destructive in-situ field air permeability testing was effective in identifying damaged areas. The findings of the field air permeability testing were compared to the findings of a conventional non-destructive testing method, ultrasonic pulse velocity. The area of surface distress indicated by in-situ air permeability results was larger than the area of compromise indicated by conventional ultrasonic pulse velocity testing. Field air permeability results were also compared to the laboratory testing results performed on core samples removed from the structure adjacent to field air permeability locations. Laboratory testing of samples enabled a comparison between field and laboratory air permeability data and enabled validation of field air permeability results. Air Permeability Index (API) of 25 mm (1 in.) thick disks sawed from the cores was determined in the laboratory testing phase. A significant increase in API was detected in the damaged areas and API was found to be particularly sensitive to fire damage. Air permeability index results indicated significant potential for further use as a quantifiable laboratory test method. The study also demonstrated the applicability of field air permeability as a rapid field indicator of sustained damage to concrete and associated drying and cracking due to exposure to elevated temperatures.

Monograph Accession #:

01020180

Report/Paper Numbers:

06-1085

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Dilek, Ufuk

Pagination:

20p

Publication Date:

2006

Conference:

Transportation Research Board 85th Annual Meeting

Location: Washington DC, United States
Date: 2006-1-22 to 2006-1-26
Sponsors: Transportation Research Board

Media Type:

CD-ROM

Features:

Figures (7) ; References (15) ; Tables (1)

Uncontrolled Terms:

Air permeability test

Subject Areas:

Bridges and other structures; Highways; Materials; I32: Concrete

Source Data:

Transportation Research Board Annual Meeting 2006 Paper #06-1085

Files:

BTRIS, PRP, TRIS, TRB

Created Date:

Mar 3 2006 10:34AM