Bio-Mediated Soil Improvement under Various Concentrations of Cementation Reagent

Lee Min Lee; Wei Soon Ng; Chew Khun Tan; Siew Ling Hii

doi:10.4028/www.scientific.net/AMM.204-208.326

Paper Titles

The Technique of Deep Foundation Pit and Pile Foundation Construction
p.308

Stability Analysis of High Filling Slope Effected by Precipitation Duration
p.312

Design Method for Embankment under Consideration of Wind Erosion in Non-Wind-Eroded Area
p.316

The Settlement Prediction of Pile Foundation Based on Grey Linear Regression Model
p.320

Bio-Mediated Soil Improvement under Various Concentrations of Cementation Reagent
p.326

Xingtai City Coal the Mine Environment Geological Problems and Countermeasures
p.330

Shear Strength Change of Different Water Content after Thawing Remolded Soil
p.334

Research of Forecasting Method for Horizontal Displacement of Deep-Seated Subgrade
p.338

Application and Research of Slope Flexible Protection System in Engineering
p.344

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 204-208Bio-Mediated Soil Improvement under Various...

Bio-Mediated Soil Improvement under Various Concentrations of Cementation Reagent

Abstract:

Bio-mediated soil improvement is a relatively young technology in geotechnical engineering. The practical applications of the technique are still exposed to some uncertainties. This paper investigated the effect of the concentration of the cementation reagent on the performance of bio-mediated soil improvement. The shear strength, calcite content, pH, and ammonium content of the bio-mediated soil were measured under three concentrations of a cementation reagent, i.e. 0.25 M, 0.5 M, and 1 M. The results showed that the calcite precipitation and shear strength improved with the increased concentration of the cementation reagent up to 0.5 M. However, the improvement was retarded at higher concentration (i.e. 1.0 M). This is likely due to the inhibitory effect and halophilic characteristic of the bacteria used for the biocementation

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Periodical:

Applied Mechanics and Materials (Volumes 204-208)

Pages:

326-329

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.204-208.326

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Cite this paper

Online since:

October 2012

Authors:

Lee Min Lee, Wei Soon Ng, Chew Khun Tan, Siew Ling Hii

Keywords:

Biocementation, Calcite Precipitation, Shear Strength, Soil Improvement

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