Free-free resonance method for the mechanical characterization of carbonate rocks used as building stones

Materiales de Construccion

J.M. Azañón¹  E.Puertas²  F.Ávila²  R.Gallego² 

[1] Dept. of Geodynamics, University of Granada;Dept. of Structural Mechanics and Hydraulic Engineering, University of Granada;

关键词: Limestone;    Sandstone;    Mechanical properties;    Characterization;    Free-Free Resonance (FFR);   

DOI  :  10.3989/mc.2022.03421

来源: DOAJ

【 摘 要 】

Nondestructive testing techniques have attracted growing interest in the last few years due to their ability to assess material properties without damaging the specimens. The free-free resonance method is a nondestructive testing technique based on the analysis of the natural frequencies of a sample. This study presents and discusses the applicability of this technique, traditionally used on soils, for the mechanical characterization of rocks. With this aim, the free-free resonance method is used to obtain the dynamic elastic modulus and shear modulus of four carbonate rocks that have been widely used as construction materials in southern Spain. The results from the nondestructive evaluation of dry and saturated rocks, in combination with petrographic characterization and uniaxial compression tests, make it possible to assess the existing relationships between the mechanical properties of carbonate rocks and to evaluate the impact of porosity and moisture content on their mechanical behavior.

【 授权许可】

Unknown