Detection of flaws in reinforcing steel in prestressed concrete bridge members
Abstract
Development of a practical nondestructive method for detecting deterioration in the reinforcement of prestressed concrete bridge structural members in situ is discussed. A preliminary magnetic inspection equipment is described. Records from laboratory evaluations using a 20 ft (6m) section of Texas Type 'C' beam and from field evaluations are presented. Similarities between laboratory and field inspection signatures are indicated. Prominent anomalous signatures are shown which correlated with steel elements. Other field signatures which indicated stirrup configuration in the post-tension girders was not in accordance with the plans. Correlation investigations are described which illustrate promising electronic signature enhancement and recognition methods for discriminating between steel artifacts and deterioration.
- Publication:
-
Southwest Research Inst. Report
- Pub Date:
- April 1981
- Bibcode:
- 1981sri..reptS....K
- Keywords:
-
- Beams (Supports);
- Bridges (Structures);
- Concrete Structures;
- Nondestructive Tests;
- Steel Structures;
- Corrosion;
- Cracking (Fracturing);
- Deterioration;
- Prestressing;
- Reinforcement (Structures);
- Engineering (General)