Dynamic behaviour of micaceous sand with varying mica content and its association with compactability, compressibility and monotonic shear response

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dc.contributor.author Seethalakshmi, P.
dc.contributor.author Sachan, Ajanta
dc.date.accessioned 2019-03-27T06:42:08Z
dc.date.available 2019-03-27T06:42:08Z
dc.date.issued 2019-03
dc.identifier.citation Seethalakshmi, P. and Sachan, Ajanta,"Dynamic behaviour of micaceous sand with varying mica content and its association with compactability, compressibility and monotonic shear response", International Journal of Geotechnical Engineering, DOI: 10.1080/19386362.2019.1589159, Mar. 2019. en_US
dc.identifier.issn 1938-6362
dc.identifier.issn 1939-7879
dc.identifier.uri https://doi.org/10.1080/19386362.2019.1589159
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/4296
dc.description.abstract The recently proposed, KAZE image feature detection and description algorithm (Alcantarilla et al. in Proceedings of the British machine vision conference. LNCS, vol 7577, no 6, pp 13.1–13.11, 2013) offers significantly improved robustness in comparison to conventional algorithms like SIFT (scale-invariant feature transform) and SURF (speeded-up robust features). The improved robustness comes at a significant computational cost, however, limiting its use for many applications. We report a GPU acceleration of the KAZE algorithm that is significantly faster than its CPU counterpart. Unlike previous reports, our acceleration does not resort to binary descriptors and can serve as a drop-in replacement for CPU-KAZE, SIFT, SURF etc. By achieving nearly tenfold speedup (for a 1920 by 1200 sized image, our Compute Unified Device Architecture (CUDA)-C implementation took around 245 ms on a single Cohesionless soils are highly susceptible to liquefaction under dynamic loading with high-strain amplitude simulating earthquake loading conditions. The presence of flaky mica particles among spherical sand influences the microscopic particle level mechanisms due to complex geometric arrangements caused by bridging, ordering and pore filling phenomena. Such variations substantially affect the compactability, compressibility and shear strength behaviour under monotonic and dynamic loading conditions. The current experimental investigations evaluated the effect of mica content on dynamic behaviour of micaceous sand through a series of strain-controlled cyclic triaxial tests at constant frequency and double axial strain amplitude of 0.5 Hz and 0.6% per cycle. The variation in dynamic parameters such as shear modulus and damping was determined at different mica contents along with cyclic stiffness degradation. Cumulative dissipated strain energy was also estimated to understand the contact-force networks of varying sand and mica matrix from sand-sand to mica-mica through sand-mica particle contact.
dc.description.statementofresponsibility by P. Seethalakshmi and Ajanta Sachan
dc.language.iso en en_US
dc.publisher Taylor & Francis en_US
dc.subject Cyclic mobility en_US
dc.subject liquefaction en_US
dc.subject dynamic behaviour en_US
dc.subject energy dissipation en_US
dc.subject micaceous sand en_US
dc.subject bridging en_US
dc.subject ordering en_US
dc.title Dynamic behaviour of micaceous sand with varying mica content and its association with compactability, compressibility and monotonic shear response en_US
dc.type Article en_US
dc.relation.journal International Journal of Geotechnical Engineering


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