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首页> 外文期刊>Indian Journal of Ecology >Effect of Bioclogging and Biocementation on Permeability and Strength of Soil
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Effect of Bioclogging and Biocementation on Permeability and Strength of Soil

机译：生物涂层和生物处理对土壤渗透性和强度的影响

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Laboratory experiments were conducted to determine the permeability and strength of soil samples before and after bioclogging and biocementation processes. In bioclogging, the extracellular polymeric substance was applied as a thin layer over the surface of the soil placed in the permeameter in three dosages and the constant head permeability study was carried out for two different samples namely silty sand and well graded sand. SEM analysis was done in order to find the presence of Dextran particlesfilling the voids present in the soil. In biocementation, sand columns are formed and bacterial and cementation solutions are poured to the layers and left for about 2 weeks. The results indicate that though exopolysaccharide was produced it was not penetrated into the soil and plug the voids and therefore no reduction in the permeability of soils was observed. However, unconfined compressive strength test indicates that biocementation resulted in an increase in the strength of soil.
机译：进行了实验室实验以确定生物录像前后土壤样品的渗透性和强度和生物沉积过程。 在Bioclogging中，将细胞外聚合物物质作为薄层施加在置于三种剂量中的渗透率中的薄层上，并且对两个不同的样品进行恒定的磁头渗透性研究即粉状砂和良好的砂砾。 完成SEM分析以发现葡聚糖填充的葡聚糖填充存在于土壤中的空隙。 在生物学中，形成砂柱，并将细菌和胶结溶液倒入层并留下约2周。 结果表明，虽然产生了外奥克里糖，但它没有渗透到土壤中并堵塞空隙，因此没有观察到土壤的渗透性的降低。 然而，无凝结的抗压强度试验表明生物沉积导致土壤强度的增加。

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