Use of corrosion monitoring sensors to monitor the in-situ performance and intervention needs in reinforced concrete structures
It is well recognised that visual inspections alone are not sufficient to establish the in-situ condition of a concrete structure, or to ensure that appropriate maintenance and rehabilitation works are undertaken. As such, diagnostic assessments consisting of a number of physical, electrical and chemical techniques are generally used in combination with visual inspection to obtain a better assessment of the condition of reinforced concrete structures already affected by corrosion induced deterioration. The information from these techniques is used collectively to ensure correct interpretation of results and subsequent diagnosis and prognosis. However, as an alternative to the combination of visual inspection and diagnostic assessment which are generally used to establish the cause, extent and degree of deterioration already apparent, corrosion monitoring sensors may be cast into new structures or installed in existing structures alone or as part of repairs, to provide the asset manager with real time information as to the current state and performance of the structure or remedial works. Monitoring sensors can provide early detection of initiation and/or propagation of corrosion and if required allow for an early diagnostic assessment, as well as, facilitate timely and cost effective preventative maintenance intervention as opposed to more disruptive and expensive rehabilitation. Such early detection can also allow the asset manager to pre-plan and invest in a timely manner and thereby minimise the number of costly interventions, mobilisations and disruptions to the travelling public. This paper presents a number of case studies where monitoring sensors have been built into new structures, as well as where sensors have been installed as part of concrete rehabilitation works with a view to monitoring their effectiveness and ongoing performance.
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Authors:
- Andrews-Phaedonos, F
- Shayan, A
- Xu, A
- Conference:
- Publication Date: 2013-10
Language
- English
Media Info
- Pagination: 16p
- Monograph Title: Concrete 2013: understanding concrete: 16-18 October 2013, Gold Coast, Queensland, Australia
Subject/Index Terms
- TRT Terms: Bridges; Concrete; Condition surveys; Corrosion; Deterioration; Inspection; Monitoring; Reinforced concrete; Sensors; Surveillance
- ATRI Terms: Bridge inspection; Corrosion; Deterioration; Monitoring; Reinforced concrete; Sensor; Visual assessment
- ITRD Terms: 9006: Continuous
- Subject Areas: Bridges and other structures; I32: Concrete; I61: Equipment and Maintenance Methods;
Filing Info
- Accession Number: 01514716
- Record Type: Publication
- Source Agency: ARRB
- Files: ITRD, ATRI
- Created Date: Feb 20 2014 10:14AM