Preliminary results on a new test for the indirect assessment of porosity through infrared thermography are presented. The study of the cooling behavior of rock samples in laboratory, through the analysis of thermograms, proved an innovative tool for the estimation of such an important property, which is one of the main features affecting the mechanical behavior of rocks. A detailed experimentation was performed on artiﬁcially heated volcanic rock samples characterized by different porosity values. The cooling trend was described both graphically and numerically, with the help of cooling curves and Cooling Rate Index. The latter, which proved strictly linked to porosity, was employed to ﬁnd reliable equations for its indirect estimation. Simple and multiple regression analyses returned satisfactory outcomes, highlighting the great match between predicted and measured porosity values, thus conﬁrming the goodness of the proposed model. This study brings a novelty in rock mechanics, laying the foundation for future researches aimed at reﬁning achieved results for the validation of the model in a larger scale.
|Titolo:||The Use of Infrared Thermography for Porosity Assessment of Intact Rock|
|Autori interni:||PAPPALARDO, Giovanna|
|Data di pubblicazione:||2016|
|Rivista:||ROCK MECHANICS AND ROCK ENGINEERING|
|Appare nelle tipologie:||1.1 Articolo in rivista|