THEORY AND DESIGN OF INSTRUMENTATION FOR BRIDGE INVESTIGATION

In the US the rate of deterioration of concrete structures has increased considerably over the past 10-15 years. Approximately 100 000 bridges per year need maintenance. The 1969 total annual cost for restoration and protection of bridges was estimated at $2.6 billion. This article addresses the theory of the design of hybrid instrumentation, which uses both radiation and electromagnetic interrogation for measurement of the integrity of bridge footings. (TRRL)

• Supplemental Notes:
  • Proceedings of the 31st meeting of the Mechanical Failures Prevention Group, MFPG Failure Prevention in Ground Transportation Systems, National Bureau of Standards, Gaithersburg, Maryland, April 22-24, 1980.
• Corporate Authors:

  National Bureau of Standards

  Gaithersburg, MD  United States 
• Authors:
  • Bracher, D A
  • Garrett, D A
  • Heller, C O
• Publication Date: 1982-10

Media Info

• Features: Figures; Photos; References;
• Pagination: p. 143-150
• Serial:
  • Publication of: National Bureau of Standards
  • Publisher: National Bureau of Standards

Subject/Index Terms

• TRT Terms: Bridges; Concrete structures; Costs; Design; Deterioration; Electricity; Electromagnetism; Footings; Instrumentation; Magnetic properties; Maintenance; Measurement; Measuring instruments; Nuclear radiation; Structures
• Uncontrolled Terms: Hybrids; Restoration
• Old TRIS Terms: Radiation measurement
• ITRD Terms: 6155: Apparatus (measuring); 3455: Bridge; 5255: Deterioration; 6954: Electricity; 3355: Engineering structure; 6936: Magnetism; 6136: Measurement; 6726: Radiation (nucl); 3397: Shallow foundation
• Subject Areas: Bridges and other structures; Design; Finance; Highways; Maintenance and Preservation; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 00391237
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Dec 30 1984 12:00AM