Next Article in Journal
Nanoscale Automated Quantitative Mineralogy: A 200-nm Quantitative Mineralogy Assessment of Fault Gouge Using Mineralogic
Previous Article in Journal
Paint Relics on Middle Age Building Stones as Proxies of Commercial Routes and Artistic Exchanges: A Multi-Analytical Investigation
Previous Article in Special Issue
Mineralogy and Leachability of Natural Rocks–A Comparison to Electric Arc Furnace Slags
Open AccessArticle

Characterization of Rock Samples by A High-Resolution Multi-Technique Non-Invasive Approach

1
Department of Civil and Environmental Engineering and Architecture (DICAAR), University of Cagliari, 09123 Cagliari, Italy
2
Consorzio Interuniversitario per l’Ingegneria delle Georisorse (CINIGeo), 00186 Roma, Italy
3
INGV Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Bologna-Via Donato Creti, 12-40128 Bologna, Italy
*
Author to whom correspondence should be addressed.
Minerals 2019, 9(11), 664; https://doi.org/10.3390/min9110664
Received: 25 September 2019 / Revised: 18 October 2019 / Accepted: 27 October 2019 / Published: 29 October 2019
(This article belongs to the Special Issue Minerals and Other Phases in Constructional Geomaterials)
Three different non-invasive techniques, namely Structure from Motion (SfM) photogrammetry, Terrestrial Laser Scanner (TLS) and ultrasonic tomography integrated with petrographic data, were applied to characterize two rock samples of a different nature: A pyroclastic rock and a carbonate rock. We started a computation of high-resolution 3D models of the two samples using the TLS technique supported by a digital SfM photogrammetry survey. The resulting radiometric information available, such as reflectivity maps, SfM photogrammetry textured models and patterns of geometrical residuals, were interpreted in order to detect and underline surface materials anomalies by a comparison of reflectance and natural colour anomalies. Starting from the 3D models from previous techniques, a 3D ultrasonic tomography on each rock sample was accurately planned and carried out in order to detect internal defects or sample heterogeneity. The integration of the above three geophysical non-invasive techniques with petrographical data—especially with the textural characteristics of such materials—represents a powerful method for the definition of the heterogeneity of the rocks at a different scale and for calibrating in situ measurements. View Full-Text
Keywords: non-invasive techniques; comenditic pyroclastic rock; Pietra Forte carbonatic rock; terrestrial laser scanner; photogrammetry; 3D acoustic tomography; petrographic data; integrated interpretation non-invasive techniques; comenditic pyroclastic rock; Pietra Forte carbonatic rock; terrestrial laser scanner; photogrammetry; 3D acoustic tomography; petrographic data; integrated interpretation
Show Figures

Figure 1

MDPI and ACS Style

Fais, S.; Cuccuru, F.; Casula, G.; Bianchi, M.G.; Ligas, P. Characterization of Rock Samples by A High-Resolution Multi-Technique Non-Invasive Approach. Minerals 2019, 9, 664.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop