DEFORMATION MEASUREMENTS OF MORTARS AT EARLY AGES AND OF LARGE CONCRETE COMPONENTS ON SITE BY MEANS OF EMBEDDED FIBER-OPTIC MICROSTRAIN SENSORS

The paper demonstrates the application of fiber-optic microstrain gages to steel components of prestressed and reinforced concrete structures in order to measure deformations caused by proof loads or induced by constraints during the hardening period of large concrete sections. The use of embedded micro sensors for assessment of volume changes of cementitious building materials at early ages, and corresponding deformations due to heat, shrinkage, etc in matured mortars, is also discussed. Theoretical aspects for the design of surface-mounted and embedded sensors are briefly addressed. The authors have investigated the behavior of embedded optical fibers, micro sensors and their coatings in cementitious mortars. Initial findings regarding the bond between sensor and the mortar matrix, as well as preferred coating materials, are presented.

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• Corporate Authors:

  Elsevier

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  Kidlington, Oxford  United Kingdom  OX5 1GB
• Authors:
  • HABEL, W R
  • HOFMANN, D
  • HILLEMEIER, B
• Publication Date: 1997

Language

• English

Media Info

• Features: References;
• Pagination: p. 81-102
• Serial:
  • Cement and Concrete Composites
  • Volume: 19
  • Issue Number: 1
  • Publisher: Elsevier
  • ISSN: 0958-9465

Subject/Index Terms

• TRT Terms: Coatings; Concrete; Deformation; Fiber optics; Material reinforcement; Measurement; Reinforcing materials; Sensors; Steel
• ITRD Terms: 3612: Coating; 4755: Concrete; 5595: Deformation; 6765: Fibre optics; 6136: Measurement; 3471: Reinforcement (in mater); 6120: Sensor; 4542: Steel
• Subject Areas: Construction;

Filing Info

• Accession Number: 00740238
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Sep 26 1997 12:00AM