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Materials 2017, 10(6), 635; doi:10.3390/ma10060635

The Use of Empirical Methods for Testing Granular Materials in Analogue Modelling

1
Institute of Geosciences and Earth Resources, National Research Council of Italy (CNR), 50121 Florence, Italy
2
Earth Sciences Department, University of Florence, 50121 Florence, Italy
*
Authors to whom correspondence should be addressed.
Academic Editor: Sinisa Dj. Mesarovic
Received: 14 April 2017 / Revised: 18 May 2017 / Accepted: 5 June 2017 / Published: 9 June 2017
(This article belongs to the Special Issue Granular Materials)
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Abstract

The behaviour of a granular material is mainly dependent on its frictional properties, angle of internal friction, and cohesion, which, together with material density, are the key factors to be considered during the scaling procedure of analogue models. The frictional properties of a granular material are usually investigated by means of technical instruments such as a Hubbert-type apparatus and ring shear testers, which allow for investigating the response of the tested material to a wide range of applied stresses. Here we explore the possibility to determine material properties by means of different empirical methods applied to mixtures of quartz and K-feldspar sand. Empirical methods exhibit the great advantage of measuring the properties of a certain analogue material under the experimental conditions, which are strongly sensitive to the handling techniques. Finally, the results obtained from the empirical methods have been compared with ring shear tests carried out on the same materials, which show a satisfactory agreement with those determined empirically. View Full-Text
Keywords: brittle material properties; analogue experiments; friction; cohesion; sand mixture; Hausner ratio; empirical methods; density brittle material properties; analogue experiments; friction; cohesion; sand mixture; Hausner ratio; empirical methods; density
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Montanari, D.; Agostini, A.; Bonini, M.; Corti, G.; Ventisette, C.D. The Use of Empirical Methods for Testing Granular Materials in Analogue Modelling. Materials 2017, 10, 635.

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