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35. BETOSCAN - A robotic system for simultaneous diagnoses of reinforced concrete structures

Title: 35. BETOSCAN - A robotic system for simultaneous diagnoses of reinforced concrete structures
Author(s): K. Reichling, M. Raupach, H. Wiggenhauser, M. Stoppel, G. Dobmann, J. Kurz
Paper category : conference
Book title: NUCPERF 2009 - Long Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plants and Waste Management
Editor(s): V. L'Hostis, R. Gens, C. Gallé
Print-ISBN: 978-2-35158-072-1
e-ISBN: 978-2-35158-087-5
Publisher: RILEM Publications SARL
Publication year: 2009
Pages: 321 - 327
Total Pages: 7
Nb references: 2
Language: English

Abstract: A reliable prognosis of the condition and behavior of a structure is an important basis for an effective service life management. In order to determine the most economical point in time for repair measures in the life-time of a structure, the knowledge about the deterioration process at exposed regions as well as a detailed knowledge about the current condition of the whole structure is essential.

To record the condition of a structure, different non destructive diagnostic tools are available. When the concrete cover is known for the whole surface and reliable estimations for the speed of carbonation and ingress of chlorides are worked out based on the data from diagnosis, the time to a specific limit state (e.g. corrosion initiation) can be estimated by means of established models.

To assess the condition of the components an investigation of the whole concrete surface is recommended by recording useful key parameters (electrochemical potentials, concrete cover, carbonation depth, chloride profiles, cracks, delaminations, condition of the reinforcement, etc.). The derived information of the potential mapping results combined with additional information from other investigations lead to significant conclusions concerning the current condition of a structure with regard to suitable repair methods.

To accelerate these intricate measurement procedures a research and development project has been initiated with several partners from science and industry to develop a robotic system called BETOSCAN which is able to navigate autonomous over large concrete surfaces and to measure and record all relevant data automatically in one step. With the presented system the results of all used test methods can be evaluated simultaneously for the investigated surface.
Detailed maps can be created to locate all critical areas. By means of periodical measurements the life-time prognoses of structures can continuously be updated.

A prototype of the system is under development. This paper focuses on the basic functions and the possible fields of application of the BETOSCAN system.

Online publication: 2009-11-16
Publication type : full_text
Public price (Euros): 0.00

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