Abstract
Contemporary challenges and results of the research to date show that the search for environmentally-friendly ways of soil improvement is the right direction. The paper presents biogrouting of silty soil compacted using standard energies in the laboratory soil compactor. An improvement of transition soils by biodeposition using Sporosarcina pasteurii has been undertaken. Biodeposition has increased shear strength in the triaxial compression test. It has been concluded that application of bacteria solution on the soil ensures lithification and a significant increase of soil rigidity. Resistance of Sporosarcina pasteurii strain to dynamic impact during soil compaction allows a possible application of these microorganisms in geoengineering.
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