A study on the applicability of microbially induced calcium carbonate precipitation on soil-sand stabilization through the bio-cementation process

Abstract Soft or loose sandy soils, particularly in ground slopes and high rainfall zones, are potentially dangerous have caused many problems such as damage, landfall, even erosion. Bio-cementation through bacterial mineralization can be considered a “green” “eco-friendly” solution toward sustainable development. Urelytical bacteria that decompose urea for calcium carbonate precipitation were selected the primary agent bio-cementation process. This study clarifies effects of particle sizes on bio-cementation. Moreover, Vietnam isolated species commercial one investigated to compare biomineralization capability. A simulated model was set up evaluate sand samples by water prevention erosion wash-out tests. Also, microstructure observations conducted optical microscopes, scanning electron phase composition analysis.