Formation of water-impermeable crust on sand surface using biocement

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dc.contributor.authorStabnikov, Victor
dc.contributor.authorNaemi, Maryam
dc.contributor.authorIvanov, Volodymyr M.
dc.contributor.authorChu, Jian
dc.date.accessioned2013-02-19T08:58:49Z
dc.date.available2013-02-19T08:58:49Z
dc.date.issued2011
dc.description.abstractThis paper examines the feasibility of using calcium-based biocement to form an impermeable crust on top of a sand layer. The biocement used was a mixture of calcium salt, urea, and bacterial suspension, which hydrolyzed urea with production of carbonate and an increase of the pH level. Applying 0.6 g of Ca per cm2 of sand surface, the permeability of the biocemented sand can be reduced from 10−4 m/s to 1.6•10−7 m/s (or 14 mm/day) due to formation of the crust on sand surface. The rupture modulus (maximum bending stress) of the crust was 35.9 MPa, which is comparable with that of limestone. The formation of a water-impermeable and high strength crust layer on sand surface could be useful for the construction of aquaculture ponds in sand, stabilization of the sand dunes, dust fixation in the desert areas, and sealing of the channels and reservoirs in sandy soil.uk_UK
dc.identifier.citationFormation of water-impermeable crust on sand surface using biocement / V. Stabnikov, M. Naemi, V. Ivanov, J. Chu // Cement and Concrete Research. - 2011. – v. 41, № 11. – Р. 1143–1149.uk_UK
dc.identifier.urihttps://dspace.nuft.edu.ua/handle/123456789/6401
dc.language.isoenuk_UK
dc.subjectbending strengthuk_UK
dc.subjectcalcium carbonateuk_UK
dc.subjectpermeabilityuk_UK
dc.subjectscanning electron microscopyuk_UK
dc.subjectопір на вигинuk_UK
dc.subjectкарбонат кальціюuk_UK
dc.subjectелектронний скануючий мікроскопuk_UK
dc.subjectводопроникливістьuk_UK
dc.subjectсопротивление на изгибuk_UK
dc.subjectкарбонат кальцияuk_UK
dc.subjectэлектронный сканирующий микроскопuk_UK
dc.subjectводопроницаемостьuk_UK
dc.subjectкафедра біотехнології і мікробіології
dc.titleFormation of water-impermeable crust on sand surface using biocementuk_UK
dc.typeArticleuk_UK

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