Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Contribution of coupling non-destructive methods for the diagnosis of concrete structures
This paper describes the general approach followed in France as part of the research project 'Damage Evaluation of Concrete Cover & Assistance to Diagnosis and repair of Civil Engineering Structures' supported by the RGCU (Reseau Genie Civil et Urbain). The project is grouping together nine laboratories in partnership. The work program includes auscultations on both in-service structures and laboratory specimens using high frequency ultrasonic method, radar, and resistivity measurement. The in-field investigations consist in the auscultation of different bridges situated in France. For laboratory tests, the investigations are carried out on three types of concrete specimens (60x60x12 cm), corresponding to three strength classes C25, C40 and C60. The concrete specimens are submitted to different solicitations: mechanical loading, physical and chemical ageing (natural and controlled drying, accelerated carbonation and chloride penetration). Each of the four methods is at present fitted to the analysis of the concrete cover of reinforced concrete structures. Their accuracy is dependent on physical conditions of the cover, particularly moisture content, cracking density, roughness of surface, and presence of coating. The coupling of the four methods should increase the accuracy of the evaluation, since a first in-situ experiment has been promising. Laboratory tests should be confirming this original approach.
Contribution of coupling non-destructive methods for the diagnosis of concrete structures
This paper describes the general approach followed in France as part of the research project 'Damage Evaluation of Concrete Cover & Assistance to Diagnosis and repair of Civil Engineering Structures' supported by the RGCU (Reseau Genie Civil et Urbain). The project is grouping together nine laboratories in partnership. The work program includes auscultations on both in-service structures and laboratory specimens using high frequency ultrasonic method, radar, and resistivity measurement. The in-field investigations consist in the auscultation of different bridges situated in France. For laboratory tests, the investigations are carried out on three types of concrete specimens (60x60x12 cm), corresponding to three strength classes C25, C40 and C60. The concrete specimens are submitted to different solicitations: mechanical loading, physical and chemical ageing (natural and controlled drying, accelerated carbonation and chloride penetration). Each of the four methods is at present fitted to the analysis of the concrete cover of reinforced concrete structures. Their accuracy is dependent on physical conditions of the cover, particularly moisture content, cracking density, roughness of surface, and presence of coating. The coupling of the four methods should increase the accuracy of the evaluation, since a first in-situ experiment has been promising. Laboratory tests should be confirming this original approach.
Contribution of coupling non-destructive methods for the diagnosis of concrete structures
Beitrag zur Verknüpfung von ZfP-Verfahren zur Diagnose von Betonstrukturen
Buyle-Bodin, F. (Autor:in) / Ammouche, A. (Autor:in) / Garciaz, J.L. (Autor:in)
2003
9 Seiten, 2 Bilder, 2 Tabellen, 14 Quellen
(Nicht paginiert)
Aufsatz (Konferenz)
Datenträger
Englisch
Integrated non-destructive testing diagnosis of concrete structures
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Destructive and Non-Destructive Assessment of Concrete Structures
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Non-destructive testing of concrete structures
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Non-destructive testing of concrete structures
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