Optical fibre grout flow monitor for post-tensioned reinforced tendon ducts

W. Craig Michie; I. McKenzie; Brian Culshaw; Peter T. Gardiner; A. McGown

doi:10.1117/12.184821

13 September 1994 Optical fibre grout flow monitor for post-tensioned reinforced tendon ducts

W. Craig Michie, I. McKenzie, Brian Culshaw, Peter T. Gardiner, A. McGown

Proceedings Volume 2361, Second European Conference on Smart Structures and Materials; (1994) https://doi.org/10.1117/12.184821
Event: Smart Structures and Materials: Second European Conference, 1994, Glasgow, United Kingdom

Abstract

We report on preliminary experimental trials aimed at assessing the suitability of a distributed water monitor as a means of determining the presence of grout in reinforced tendon ducts of civil engineering structures. This sensing capability is realized through a combination of Optical Time Domain Reflectometry (OTDR) and chemically sensitive water swellable polymers (hydrogels). This form of sensor cable can detect water as a function of linear position along its length with a spatial resolution of a few centimeters^1,2. The experiments carried out here indicate that this approach has considerable potential as a means of providing quality assurance during the grouting procedure.

Citation Download Citation

W. Craig Michie, I. McKenzie, Brian Culshaw, Peter T. Gardiner, and A. McGown "Optical fibre grout flow monitor for post-tensioned reinforced tendon ducts", Proc. SPIE 2361, Second European Conference on Smart Structures and Materials, (13 September 1994); https://doi.org/10.1117/12.184821

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