Small-strain shear modulus of soft clay treated with Saccharomyces cerevisiae and cement

Publication Type:
Conference Proceeding
Citation:
ICSMGE 2017 - 19th International Conference on Soil Mechanics and Geotechnical Engineering, 2017, 2017-September pp. 2507 - 2510
Issue Date:
2017-01-01
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© 2017 19th ICSMGE Secretariat. All rights reserved. Soil stabilisation by means of microorganisms is an emerging and novel technique in geotechnical engineering. On the other hand, cementation, as one of the conventional ground improvement techniques, has been proved to be an effective method to enhance the engineering properties of soils. Hence, it is believed that the combination of these two approaches can be extremely valuable and offer a novel, cost effective, environmentally friendly and practical engineering solution. In this study, the Saccharomyces cerevisiae, a species of yeast, has been selected owing to abundance and production cost to conduct the experiment in order to investigate its influence on the shear wave velocity and the small-strain shear modulus of cement stabilised clays using bender element test. It is observed that an appropriate amount of Saccharomyces cerevisiae can adequately improve the stiffness of soft clays treated with cement and microorganisms in long term.
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