Please use this identifier to cite or link to this item:
http://hdl.handle.net/10174/30130
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Title: | Monitoring high thermal performance concrete for concentrated solar power plants with fibre optic sensors |
Authors: | Ruiz-Lombera, Rubén Grandal, Tania Fraga, Sergio |
Keywords: | Monitoring Concrete Concentrated Solar Power Thermal performance fibre optics |
Issue Date: | 27-Aug-2019 |
Publisher: | SIMAR 2019 - Fifth Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures |
Abstract: | In this paper a monitoring system for concrete structures at high temperatures
(500ºC) is presented. The aim of the monitoring strategy based on fibre optic sensors (FOS) is
to develop a high-tech monitoring technology for future installation in Concentrated Solar
Power (CSP) plants with the purpose of lifecycle analysis and predictive maintenance via
structural health monitoring (SHM). The monitoring strategy is based on embedding FOS in
high thermal performance concrete while it is casting. The FOS technology employed to
monitor both temperature and strain in concrete is known as Fibre Bragg Grating (FBG). In this
work, the development of the special metallic coating and smart packaging employed to protect
the sensors in this harsh environment, the calibration of the sensors and the thermal validation of
the monitoring system at lab scale working in a range of temperatures between 200ºC and 500ºC
is demonstrated. The lab tests were performed over a sample of 30x30x30cm, composed of 2
different layers and 4 tubes of steel, the core is made with concrete specially manufactured to
have a very good thermal behaviour, and the second layer is for the insulating, and it is formed
by foam concrete. The FBG sensors were positioned longitudinally, parallel to the tubes by drill
holes on the casting structure at 14 different positions. The concrete curing process and some
different heating cycles up to 500ºC, simulating the thermal behaviour of CSP plants, were
monitored using the fibre sensors |
URI: | https://www.ndt.net/search/docs.php3?id=24956 http://hdl.handle.net/10174/30130 |
Type: | lecture |
Appears in Collections: | CI-ER - Comunicações - Em Congressos Científicos Nacionais
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