| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1648604 | Materials Letters | 2011 | 4 Pages |
Abstract
Two ureolytic strains, B. sphaericus LMG 22257 and Bacillus sp (I-001), were tested for their ability to consolidate sand by submitting them to two days' treatment using 107 viable cell concentrations of inocula and medium precipitation with calcium ions. The results showed that B. sphaericus LMG 22257 induced greater calcium carbonate formation. Both strains produced calcite and were able to consolidate sand. Tensile strength of consolidated sand was not a function of the amount of precipitated CaCO3 but a linear function of the ratio bioconsolidation index (BC) defined as the ratio of CaCO3 volume to initial sand porosity. A simple model to estimate the engineering benefits of consolidation is proposed.
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Authors
Márcia Aiko Shirakawa, Katia Kaori Kaminishikawahara, Vanderley Moacyr John, Henrique Kahn, Marcos Massao Futai,