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Torsional and flexural resonant column testing of grouted sands
Abstract Torsional and flexural resonant column tests were conducted on sands grouted with a fine cement and the effects of confining pressure, strain, grout water-to-cement ratio (W/C) and sand grain size and shape were evaluated. Both types of excitation were applied on a single grouted sand specimen without causing specimen failure. Flexural excitation of grouted sands has not been reported in the literature to date. The grout W/C ratio had the strongest effect on the dynamic properties of the grouted sands and on the improvement of clean sand properties due to grouting. Depending on grout W/C ratio and confining pressure, the shear and Young's moduli, the torsional and flexural damping ratios and the Poisson ratio of the clean sands were improved by a factor of 6–36, 1.1–7.3 and 1.02–1.82, respectively.
Highlights Flexural resonant column testing of grouted sands conducted for the first time. Similar, qualitative, response of grouted sands to torsional or flexural excitation in resonant column. Grout W/C ratio controls the dynamic properties of grouted sands. Sand dynamic moduli increase by a factor of up to 36 by fine cement grouting. Sand damping ratios increase by a factor of up to 7 by fine cement grouting.
Torsional and flexural resonant column testing of grouted sands
Abstract Torsional and flexural resonant column tests were conducted on sands grouted with a fine cement and the effects of confining pressure, strain, grout water-to-cement ratio (W/C) and sand grain size and shape were evaluated. Both types of excitation were applied on a single grouted sand specimen without causing specimen failure. Flexural excitation of grouted sands has not been reported in the literature to date. The grout W/C ratio had the strongest effect on the dynamic properties of the grouted sands and on the improvement of clean sand properties due to grouting. Depending on grout W/C ratio and confining pressure, the shear and Young's moduli, the torsional and flexural damping ratios and the Poisson ratio of the clean sands were improved by a factor of 6–36, 1.1–7.3 and 1.02–1.82, respectively.
Highlights Flexural resonant column testing of grouted sands conducted for the first time. Similar, qualitative, response of grouted sands to torsional or flexural excitation in resonant column. Grout W/C ratio controls the dynamic properties of grouted sands. Sand dynamic moduli increase by a factor of up to 36 by fine cement grouting. Sand damping ratios increase by a factor of up to 7 by fine cement grouting.
Torsional and flexural resonant column testing of grouted sands
Basas, V.G. (author) / Pantazopoulos, I.A. (author) / Atmatzidis, D.K. (author)
2020-08-06
Article (Journal)
Electronic Resource
English
Resonant Column Testing of Microfine Cement Grouted Sands
| British Library Conference Proceedings | 2012
| British Library Online Contents | 2018
| British Library Online Contents | 2018