Evaluation of concrete structures by combining non-destructive testing methods (SENSO project)

The management and maintenance of the built heritage is one of the main interests of the owners of concrete structures. The engineers wish to obtain quantitative information about concrete properties and their variability. Non-destructive testing (NDT) is very popular in this context as it quickly provides relevant information on the integrity and evolution of the material, but several kinds of indicators representative of the concrete condition need to be evaluated. A French Project, named SENSO, aims to develop methods for the non-destructive evaluation of concrete based on a multi-techniques approach. Several families of techniques are concerned (ultrasonic, electromagnetic, electrical, etc.). The main objective is to define the sensitivity of the techniques and the variability of the evaluation for each indicator concerned. To achieve this, a large experimental programme, involving a representative range of concretes and several indicators, has been carried out. A large database, linking the NDT observables and the indicators, allows the different observables to be distinguished in terms of quality (linked to the variability) and in terms of relevance for the characterisation of each indicator. The improvement of the indicator evaluation by means of technique combinatio

A review of Ground Penetrating Radar application in civil engineering : a 30-year journey from Locating and Testing to Imaging and Diagnosis

202305 bckwAccepted ManuscriptSelf-fundedPublishe

GPR-based depth measurement of buried objects based on Constrained Least-Square (CLS) fitting method of reflections

Title on author’s file: GPR Uncertainty Modelling and Analysis of Object Depth based on Constrained Least-square202207 bcfcNot applicableRGCOthersPolyU’s research student exchange fundPublished24 month

Un site test « radar » pour le génie civil urbain : quelques exemples d’utilisation

Le site test géophysique du LCPC est en service depuis cinq ans. Il a été conçu pour reproduire, dans un environnement totalement contrôlé, des objets ou obstacles divers susceptibles d’être rencontrés dans les sous-sols urbains. Dès sa conception, le site a été adapté principalement au contexte des techniques radars. Le besoin essentiel du génie civil urbain dans lequel est inscrit ce site concerne en effet la détection, la localisation et la caractérisation d’obstacles et d’objets enfouis et non pas la caractérisation des matériaux du sous-sol. En tant qu’outil pour la profession, il a été logiquement utilisé, depuis, pour des besoins de tests ou comparaisons d’appareils, de validation de méthodes de mesures ou de modélisations. Après une description du site lui-même et de sa construction, des exemples d’utilisations expérimentales, pédagogiques ou numériques sont présentés

Step frequency radar applied for asphalt thickness measurements with various interface conditions

International audienc

Step frequency radar applied for asphalt thickness measurements with various interface conditions

International audienc

Step frequency radar applied for asphalt thickness measurements with various interface conditions

International audienc

Step frequency radar applied for asphalt thickness measurements with various interface conditions

International audienc

GPR monitoring of artificial debonded pavement structures throughout its life cycle during accelerated pavement testing

202109 bcvcVersion of RecordPublishe