DEVELOPMENT AND ASSESSMENT OF INNOVATIVE EXPERIMENTAL TECHNIQUES FOR THE STUDY OF THE MECHANICAL BEHAVIOUR OF NATURAL BUILDING STONES: APPLICATIONS TO THE CONSERVATION AND RESTORATION OF MONUMENTS OF CULTURAL HERITAGE

Abstract: 

Traditional sensing techniques used in Strength of Materials (Strain Gauges, LVDTs, Extensometers, Dial Gauges, Optical Methods like Moir, Photoelasticity, Caustics, DIC) are pumping data from the specimens surface. Therefore valuable information concerning forerunner events within the specimens volume (well preceding those observed at the surface) is lost.

The problem is critical in restored members of ancient monuments and therefore in specimens simulating them since the coexistence of at least two materials (authentic stone and metallic reinforcement) creates internal interfaces and discontinuities where failure starts.

The solution here proposed is to use new innovative techniques, including Optical Fibers (OF), Electrical Measurements (EM), Acoustic Emission (AE), Fibers with Carbon Nano-Tubes (CNT), selected due the sensor's small size (minimizing intervention), durability, resistance to environmental and chemical attacks. These techniques are not used in problems related to Cultural Heritage (at least in Greece) although some of them (OF, AE) are used in industrial applications, mainly because their use is not standardized and in some cases (EM, CNT fibers) their physical foundation is not yet clear.

In this direction these innovative techniques will be used in parallel with traditional ones (well founded and standardized) in long series of both element (tension, compression, bending, pull-out) and structural tests (with specimens simulating restored structural elements of Greek Cultural Heritage stone monuments). The data obtained will be used to validate/calibrate/standardize application of the innovative techniques in tests related to conservation/restoration of ancient monuments, enhance their physical foundation and explore their capability for Structural Health Monitoring. In addition the experience gained will permit assessment of restoration techniques in the direction of minimizing the intervention on the authentic building material.

Project info

Acronym:
INTERMONU
Scientific Coordinator:
Kourkoulis Stavros
Research Team 2 Leader:
Aifantis Elias
Research Team 3 Leader:
Agioutantis Zacharias
Research Team 4 Leader:
Triantis Dimos

Stats

I.D.:
726
Mis:
380147
Duration (months):
45
Budget:
600 000.00
Diavgeia:
ΑΔΑ: Β4139-1ΩΝ

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