An experimental study on dynamic response for MICP strengthening liquefiable sands

Zhiguang, Han; Cheng, Xiaohui; Ma, Qiang

doi:10.1007/s11803-016-0357-6

Cited by 66 publications

(17 citation statements)

References 18 publications

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“…Furthermore, comparing the cyclic stress ratio (CSR) for sand treated with Portland cement and bio-cement showed that CRS for biocement treated sand was higher than that of the cement-treated soil at similar quantity of cementation content. Similarly, conducting undrained shear strength and dynamic triaxial tests on the mechanical properties of MICP treated sand found out that strength and liquefaction resistance was greatly improved, this is in consistent with previous studies [8].…”

Section: Effect Of Micp On the Cyclic Response Of Soilsupporting

confidence: 89%

Review on biological process of soil improvement in the mitigation of liquefaction in sandy soil

2018

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Recently, the concept of using biological process in soil improvement otherwise called bio-mediated soil improvement technique has shown greater prospects in the mitigation of liquefiable soils. It is an environmental friendly technique that has generated great interest to geotechnical engineers. This paper presents a review on the microorganism responsible for the biological processes in soil improvement system, factors that affect biological process, identifying the mechanism of liquefaction and commonly adopted method to mitigate liquefaction. Next, the effect of microbial induced calcite precipitation (MICP) on the strength and cyclic response were also analyzed, where it was identified that higher cementation level leads to formation of larger sized calcite crystals which in turn leads to the improved shear strength, stiffness and cyclic resistance ratio of the soil. However, the effects of various bacteria, cementation reagent concentrations amongst other factors were not fully explored in most of the studies. Finally, some of the challenges that lay ahead for the emerging technology are optimizing treatment factors (bacteria and cementation reagent concentration), upscaling process, training of researchers/technologist and long – time durability of the improved soils.

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Section: Effect Of Micp On the Cyclic Response Of Soilsupporting

confidence: 89%

Review on biological process of soil improvement in the mitigation of liquefaction in sandy soil

2018

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“…e number of liquefaction cycles increased with an increase in CaCO 3 content, indicating that MICP treatment can significantly improve the liquefaction resistance of calcareous sand. Han et al [94] conducted dynamic triaxial tests of MICP-treated sand and concluded that solidified sands with different strengths can meet different engineering requirements, the solidification time can be shortened to 1 to 2 days by reducing the use of bacterial suspensions and nutrients, and MICP is effective in improving the liquefaction resistance of sand. Han and Cheng [95] characterized the effect of different calcium salts on the MICP solidification efficiency using ammonium and found that calcium acetate was the most effective in improving the mechanical properties of liquefiable sand and that the hydraulic permeability of the solidified sample was significantly reduced.…”

Section: Liquefaction Resistancementioning

confidence: 99%

Geotechnical Engineering Properties of Soils Solidified by Microbially Induced CaCO₃ Precipitation (MICP)

Liu

Chen

2021

Advances in Civil Engineering

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Microbially induced calcium carbonate precipitation (MICP) uses the metabolic function of microbes to carry out biochemical reactions with other substances in the environment. Through the controlled growth of inorganic minerals, soil particles are cemented and soil pores are filled to solidify the soil and reduce its permeability. Thus, the application of this technology was foreseen in geotechnical engineering and environment (building antiseepage, contaminated soil restoration, slope soil erosion, and sand liquefaction). In this review article, based on current research findings, the urea hydrolysis and the cementation mechanism of MICP are briefly described. The influences of factors such as enzyme activity, cementation solution concentration, pH, temperature, grouting method, and particle size on MICP-treated soil are discussed. The engineering properties of MICP-treated soils are evaluated, for instance, the strength, stiffness, liquefaction resistance, permeability, and durability. The applications of MICP technology in ground improvement, geotechnical seepage control, foundation erosion resistance, and fixation of heavy metals are summarized. Finally, future directions of the development of MICP technology are elucidated to provide a reference and guidance for the promotion of MICP technology in the geotechnical engineering field.

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“…Tani et al [35] mentioned that this method is also applicable for both new and existing buildings. Several researchers, such as Orense [36], Han et al [37], and Badanagki et al [38] had presented the use of solidification method and also concluded that the performance of solidification method had been verified experimentally and numerically. This method seems to be reasonably implemented as liquefaction countermeasure in study area.…”

Section: Recommendation For Liquefaction Countermeasurementioning

confidence: 99%

A Simple Shaking Table Test to Measure Liquefaction Potential of Prambanan Area, Yogyakarta, Indonesia

Mase

Fathani

Adi

2021

AEJ

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This paper presents the experimental study of liquefaction potential for sandy soil in Prambanan Area, Yogyakarta, Indonesia, which underwent liquefaction due to the Mw 6.3 Jogja Earthquake on May 27, 2006. Shaking table tests considering the variation of acceleration and shaking duration were performed to investigate the liquefaction potential of sand. The liquefaction time stages including time to start liquefaction, time to start pore pressure dissipation, and liquefaction duration were observed. The percentage of liquefaction duration increase, the excess pore water pressure ratio and the required time to generate liquefaction, and the effect of applied acceleration to cyclic stress ratio, were also presented. The results showed that the sand could undergo liquefaction under the variation of dynamic load. The variation of dynamic load significantly influenced the time stages of liquefaction, the increase of liquefaction duration percentage and cyclic stress ratio. The results also exhibited that the larger applied acceleration and the longer shaking duration means the longer liquefaction duration and the larger liquefaction potential. In general, the result could bring the recommendation to the liquefaction countermeasure for Prambanan Area.

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An experimental study on dynamic response for MICP strengthening liquefiable sands

Cited by 66 publications

References 18 publications

Review on biological process of soil improvement in the mitigation of liquefaction in sandy soil

Review on biological process of soil improvement in the mitigation of liquefaction in sandy soil

Geotechnical Engineering Properties of Soils Solidified by Microbially Induced CaCO₃ Precipitation (MICP)

A Simple Shaking Table Test to Measure Liquefaction Potential of Prambanan Area, Yogyakarta, Indonesia

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An experimental study on dynamic response for MICP strengthening liquefiable sands

Cited by 66 publications

References 18 publications

Review on biological process of soil improvement in the mitigation of liquefaction in sandy soil

Review on biological process of soil improvement in the mitigation of liquefaction in sandy soil

Geotechnical Engineering Properties of Soils Solidified by Microbially Induced CaCO3 Precipitation (MICP)

A Simple Shaking Table Test to Measure Liquefaction Potential of Prambanan Area, Yogyakarta, Indonesia

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Geotechnical Engineering Properties of Soils Solidified by Microbially Induced CaCO₃ Precipitation (MICP)