DBPapers
DOI: 10.5593/SGEM2014/B61/S25.039

BIOGROUT TECHNOLOGY APPLIED ON TRANSILVANIAN SANDS

I.C. Molnar, V. Farcas, L. Kopenetz, Z. Kaltenbacher, M.I. Mate
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-20-9 / ISSN 1314-2704, June 19-25, 2014, Book 6, Vol. 1, 277-284 pp

ABSTRACT
Development of construction field in the past years lead to the necesity of finding new solutions for foundation soil improvement. Soil stabilisation is a problem that often occurs during the construction process and because of that, this topic became one the most important research topics in geotechnical engineering. This paper presents Biogrout Technology and the procedure used to apply it on Transilvanian sands. Biogrouting is a new biological ground improvement method in geotechnics, in which microorganisms (ureolytic bacteria: Sporosarcina Pasteurii DSMZ 33) are used to induce calcite based Microbial Carbonate Precipitation (MICP) in the ground in order to increase the shear strength and stiffness of granular sandy soils (source of carbon: CO(NH2)2, source of calcite: CaCl2). The paper also presents the results obtained in the laboratory after testing the new material using triaxial compression tests.

Keywords: Biogrout, Microbial Carbonate Precipitation (MICP), Modulus of Elasticity, Triaxial compression test, Sporosarcina Pasteurii