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Introducing the concept of mechanical texture in comminution: The case of concrete recycling

Bourgeois, Florent and Lippiatt, Nicholas and Powell, Malcolm S. Introducing the concept of mechanical texture in comminution: The case of concrete recycling. (2015) International Journal of Mineral Processing, vol. 136. pp. 7-14. ISSN 0301-7516

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Official URL: http://dx.doi.org/10.1016/j.minpro.2014.09.012

Abstract

Modern comminution research and development are mainly product driven rather than material driven. An opinion that is gaining acceptance throughout the comminution community is that it is desirable for the comminution field to evolve toward material driven process design. To this end, this paper introduces the concept of mechanical texture, which corresponds to those textural properties of materials that have a direct bearing on their mechanical and fracture properties, which in turn should be the primary target for comminution process research and equipment design. The paper shows that mass specific fracture energy Ecs is a fracture parameter that is highly sensitive to variations in material texture, leading to selecting Ecs as a sound mechanical texture index. The paper then shows that, in the case of concrete, a set of specific features of the fracture porosity that can be measured inside concrete texture correlate highly with Ecs, thereby defining mechanical texture for concrete comminution. The demonstration that it is possible to establish a direct link between textural properties of concrete andmacroscopic properties relevant to comminution shows that material driven comminution process modeling and design are possible and should be encouraged.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at International Journal of Mineral Processing website : http://www.sciencedirect.com/science/journal/03017516
HAL Id:hal-01146906
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > University of Queensland - UQ (AUSTRALIA)
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Deposited By: Florent BOURGEOIS
Deposited On:29 Apr 2015 11:44

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