Author(s)

B. Christaras

Abstract

: The investigation of the physical and mechanical properties of stones in monuments needs non destructive methods and small quantity of testing material. In this framework, P & S wave ultrasonic velocities can be used for both in situ and laboratory measurements. In the present paper the above methods was used for the study of properties like the mechanical anisotropy, weathering degree, mechanical strength and deformation ability of stones, using data from different countries, like France, Italy and Greece. The P-waves were also used, in indirect mode, for the estimation of the depth of weathering at the stone surfaces of three representative monuments in Greece. 1 Introduction One of the greatest dangers for the historical monuments is

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