Track 1: DOCUMENTATION AND DIAGNOSTICS – UNDERSTANDING HISTORIC PLACES / Volet 1 : Documentation et diagnostic – Comprendre les lieux historiques

Non-destructive testing applied to the auscultation of ancient buildings and cultural heritage

Friday, October 13
8:30 AM - 10:00 AM

The preservation and safeguarding of ancient buildings and cultural heritage requires a good understanding of the state and behavior of the structures under consideration.
As part of restoration or rehabilitation of an old building, auscultation and diagnostic by Non-Destructive Testing (NDT) can be very useful in characterizing its status. Indeed, NDT technics (GPR, ultrasound, corrosion potential, resistivity, etc.) make it possible to establish a rapid and accurate diagnostic of a structure by analyzing different physical parameters that may vary in space and time. These techniques are sometimes combined to refine the diagnostic and are transcribed into maps to offer restorers and architects factual decision-making elements (identification and characterization of heterogeneities, distribution of moisture, corrosion potential, etc.).In order to analyze the behavior of old structures to determine the kinetics of certain structural parameters (crack opening, for example), another challenge is to prevent the occurrence of generalized degradations. As an example, the Captae® solution developed by Setec represents a major technological leap in the world of instrumentation and monitoring. Captae® is a self-contained, multifunctional mini-central station for simultaneous acquisition, recording and wireless transmission of numerous structural and environmental parameters.
The NDT and the monitoring allow acquiring large volumes of data with measurement supports, resolutions and scales different from each other but also with the point data (sampling). A major challenge lies in the integration, spatial representation and joint interpretation of all the data acquired, in a realistic and intelligible way.
To achieve this objective, research is undertaken in the framework of a PhD at INRS (Quebec City) in partnership with Setec Canada through MITACS, for the development of a new Multi-scale (field, laboratory) and multivariate (physical, chemical) data processing system from NDT and monitoring. This system is based on the use of 3D imaging techniques and innovative data integration methods which considerably increase their representativeness and their exploitation in space and time. These techniques will greatly improve the targeting of restoration operations and therefore reduce the associated costs.
This presentation will show several examples of the application of NDTs implemented in different heritage contexts (Church, rampart, temple, sarcophagus, statue) through missions carried out on the international scene. The first results of the research undertaken at INRS will then be illustrated by an example of application and 3D integration of NDT data on a masonry chapel.

Learning Objectives:

Olivier Anterrieu, ing., Jr

INRS

Graduate of the "Ecole et Observatoire des Sciences de la Terre" in Strasbourg (France), holder of a master's degree in mineral engineering from the "Ecole Polytechnique de Montreal" (Quebec), worked 9 years in France in industry (for FONDASOL as project manager and head of the geophysical department and then for SETEC as project manager in applied geophysics to heritage buildings and civil engineering). Since 2016, PhD student at INRS (Quebec) in partnership with Setec Canada on the development of a digital exploitation tool for NDT/ monitoring data to guide the preventive maintenance of heritage buildings and civil engineering structures.

Presentation(s):

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