Monitoring of concrete at very early age using stiff SOFO sensor

B. Glisic, N. Simon

Research output: Contribution to journalArticlepeer-review

79 Scopus citations


The SOFO system is based on low-coherence interferometry in single-mode fibres and allows the measurement of deformations in civil structures built with classical civil engineering materials (concrete, steel and wood). It has been successfully tested in different types of structures such as bridges, dams, tunnels and piles. In order to monitor behaviour of concrete at the very early age a stiff SOFO sensor has been developed. Using standard SOFO sensor it is possible to measure deformation of concrete at the very early age (thermal swelling and shrinkage). However, by coupling it with a stiff sensor, it is possible to determine the hardening time of concrete and to measure initial stress in the rebars. The stiff sensor and the results obtained using its first prototype are presented in this paper.

Original languageEnglish (US)
Pages (from-to)115-119
Number of pages5
JournalCement and Concrete Composites
Issue number2
StatePublished - Apr 1 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • General Materials Science


  • Fibre optic sensors
  • Hardening time of concrete
  • Very early age of concrete


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