Estimation of uniaxial compressive strength and intrinsic permeability from ultrasounds in sedimentary stones used as heritage building materials

This paper combines ultrasonic parameters recorded from P- and S- waves effective porosity to estimate uniaxial compressive strength, σC, intrinsic permeability, k - two of the most crucial physical used in stone conservation studies. The have been chosen because they are sensitive microstructural properties stones which influence both σC differently. Velocities compressional or primary, Vp, shear secondary, Vs, elastic related mineralogical composition; waveform attenuation is presence vuggy macropores pore particle size; wavelength size. Fifteen types Spanish built heritage were measured including calcarenites, sandstones, dolostones travertines. Several simple multiple predictive expressions for fitted, quantified through Pearson correlation coefficient, R. Curve fitting improves as number petrophysical taken into account linear regressions increases. obtained Pearson's correlations values slightly higher than k. best (R = 0.921) 0.903) found when equation incorporates all wave non-destructively, connected porosity. In general, statistically significant variable fitted regressions. estimation parameters, without considering porosity, shows a good 0.852 0.864, respectively). addition Vs does not significantly improve goodness fit. Consequently, measurement unnecessary it difficult time-consuming. Finally, results also show that (present travertines) influences differently, relative other properties; limiting techniques use with this type Estimating using exclusively advantageous estimations can be non-destructively portable equipment, while providing an acceptable