INTELLIGENT CONCRETE TAKES OWN STRESS TEST

It is claimed that Japanese researchers have developed an intelligent structural material that would allow the determination of maximum stresses in a structure and could help warn of an impending collapse. The composite glass and carbon fiber material would replace steel reinforcement in concrete structures. The composite rebar is structured in such a way that as stress increases, more carbon fibers break. Because carbon conducts electrictiy, the maximum stress could be inferred by measuring the change in the electrical resistnance of a member. The glass fibers in the bar would actually carry the load. It is expected that the material would be useful for assessing damage sustained by lifeline structures during earthquakes, and that it could also be used in aircraft and machinery. More development work is expected.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08919526
• Corporate Authors:

  McGraw-Hill, Incorporated

  330 West 42nd Street
  New York, NY  United States  10036
• Publication Date: 1992-6-22

Media Info

• Pagination: p. 14-15
• Serial:
  • ENR
  • Volume: 228
  • Issue Number: 25
  • Publisher: McGraw-Hill, Incorporated
  • ISSN: 0891-9526

Subject/Index Terms

• TRT Terms: Carbon; Composite materials; Concrete; Development; Earthquake resistant design; Earthquake resistant structures; Fiber reinforced concrete; Glass fibers; Research
• Uncontrolled Terms: Research and development
• Subject Areas: Highways; Materials; Research; I32: Concrete;

Filing Info

• Accession Number: 00623716
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 31 1992 12:00AM