Abstract Recent advances in experimental characterization techniques offer unique opportunities to evaluate mechanical properties of geomaterials. In this paper, authors introduce two such techniques that have significant potential to impact geomechanics community. The technique of using Instrumented indentation testing using nano-indenter to evaluate hardness and modulus of individual sand particles is introduced. Use of the measured data from nanoindenter on individual sand grain in modelling its assembly using numerical methods such as the discrete element method (for example PFC-2D) is addressed. Modulus for two silica sands with varying particle shape is presented for the depth of indentation in the range of 100 to 1000 nanometers. Use of neutron science for solving relevant problems to geotechnical engineering is also described in this paper. Neutrons are subatomic particles with no electric charge having duality and interacts with atomic nuclei, while X-ray interacts with electrons. Neutrons thus have significantly higher penetration power for most geo-materials when compared to X-rays and are sensitive to hydrogen. Use of neutrons for solving a new class of problems including non-destructive evaluation of strain at particle level while the assemblage is subjected to target stress conditions, and imaging applications including flow through partially saturated porous medium are presented.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Nano and neutron science applications for geomechanics


    Contributors:

    Published in:

    Publication date :

    2009-06-24


    Size :

    10 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Issues on Geomechanics

    Costes, N. C. / Sture, S. / American Society for Civil Engineers; Aerospace Division | British Library Conference Proceedings | 1996



    TO THE QUESTION OF GEOMECHANICS DESTRUCTION AND STRENGTHENING OF ROCKS AROUND THE INCLINED PILES

    V. I. Sokolovskiy / S. V. Borshchevskyi / V. V. Honcharenko | DOAJ | 2010

    Free access


    Nano-Technology and Science Expected from Fullerenes

    Tanigaki, K. | British Library Online Contents | 1995