Cementation of Sands Due to Microbiologically-Induced Carbonate Precipitation

Fukue, Masaharu; Ono, Shin-ichi; Satō, Yoshio

doi:10.3208/sandf.51.83

Cited by 33 publications

(29 citation statements)

References 17 publications

(10 reference statements)

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“…(8). For this equation, the density of CaCO 3 (µ CaCO 3 (g/cm 3 )) was considered to be equivalent to that of aragonite (2.93 g/cm 3 ) because the precipitate was aragonite.…”

Section: (2) Injection Intervalmentioning

confidence: 99%

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Microbially Induced Sand Cementation Method Using <i>Pararhodobacter</i> sp. Strain SO1, Inspired by Beachrock Formation Mechanism

Danjo

Kawasaki

2016

Mater. Trans.

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To develop an alternative ground improvement technique in coastal areas based on bio-stimulation, we investigated sand cementation using bacteria that have been shown to enhance beachrock formation. We conducted cementation tests using Pararhodobacter sp. strain SO1, a local ureolytic bacteria originating from the sand near beachrock in Okinawa, Japan. Specifically, we attempted to cement sand specimens to unconfined compressive strength (UCS) of several MPa and establish the influence of several test conditions (curing temperature, injection interval of cementation solution, Ca 2+ concentration and sodium malate concentration in the cementation solution, and test period) on the UCS. Column specimens were cemented up to UCS of 10 MPa after 28 days under the conditions (curing temperature; 30°C, injection interval; 1 day, Ca 2+ concentrations in cementation solution; 0.3 M). Multiple regression analysis showed that the relevant conditions for UCS were test period, D (days), and Ca 2+ concentration of the cementation solution, C ca (M). The prediction formula for UCS, q ud (MPa), was experimentally determined to be q ud = 48.3C ca + 0.456D ¹ 19.51. Overall, the results of this study will contribute to the application of a new technique for coastal sand improvement and bio-stimulation.

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“…(8). For this equation, the density of CaCO 3 (µ CaCO 3 (g/cm 3 )) was considered to be equivalent to that of aragonite (2.93 g/cm 3 ) because the precipitate was aragonite.…”

Section: (2) Injection Intervalmentioning

confidence: 99%

“…Aqua marina, 7) NO-A10 strain isolated from the soil in Niwase, Okayama, 8) Bacillus sphaericus 9) and Bacillus sp. strain VS1 10) have been shown to induce sand cementation using the same mechanism.…”

Section: Introductionmentioning

confidence: 99%

Microbially Induced Sand Cementation Method Using <i>Pararhodobacter</i> sp. Strain SO1, Inspired by Beachrock Formation Mechanism

Danjo

Kawasaki

2016

Mater. Trans.

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“…Both of them can resist against acid more than calcite [90]. The resistance against acetic acid is stronger for the cementation with Mg/Ca ratio of 0.5 than calcite without magnesium, and UCS value estimate as 3.2 MPa for Mg/Ca ratio of 0.5 and 1 MPa for calcite without magnesium [91]. Ismail et al explain that the shape and the angularity of the soil particles have a great influence on the strength increase.…”

Section: Caco 3 Precipitationmentioning

confidence: 99%

Effective Use of Plant-Derived Urease in the Field of Geoenvironmental/ Geotechnical Engineering

Ran¹,

Kawasaki²

2016

J Civil Environ Eng

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Geotechnical and geo-environmental engineering applications currently being explored through bio mineralization process include cementation of sands to improve mechanical properties and hence, to enhance bearing capacity and liquefaction resistance, sequestration of carbon, soil erosion control via surficial stabilization, groundwater flow control and remediation of soil and groundwater impacted by metals and radionuclides. Bio mediated system broadly refers to a chemical reaction series that are managed and controlled through biological activities and byproducts resulting from those reactions alter the properties of material in the system. Bio mediated methods such as microbial induced calcite precipitation (MICP), biofilm formation, biogas generation and biopolymers have been developed by injecting or stimulating microbes. MICP is the most widely explored method. Microbes having urease activity enhance the hydrolysis of urea and it helps to control the pH and to precipitate carbonate. Although it is a widely explored bio mediated method it has some disadvantages.The plant-derived urease may offer many benefits over microbial urease to induce carbonate cementation. Therefore, it is advantageous to explore the knowledge regarding such a technique as an eco-friendly method for different applications in the fields of geoenvironmental/geotechnical Engineering. The main objective of this paper is to provide an overview of the importance of plant-derived urease for different applications in the fields of geoenvironmental/ geotechnical engineering. The information presented in this paper may be important for biotechnologists/geoengineers to have wide ranging updates on the current situation.

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“…Using the microbes, sandy soils were improved by the microbially induced calcite (CaCO 3 ), Mg-calcite and possibly dolomite (CaMg(CO 3 ) 2 ) (Fukue et al 2011). The microbe isolated is Sporosarcina sp., facultative bacteria, Gram--positive and an alkalophilic.…”

Section: Experimentation Materialsmentioning

confidence: 99%

“…Since carbonate can play an important role as a binder of soil, the content of carbonate becomes one of the most important factors to evaluate the mechanical properties of soils cemented in natural or artifi cial process (Fukue et al 1999(Fukue et al , 2011. In this study, the averaged carbonate content of soil (C) is defi ned by…”

Section: Introductionmentioning

confidence: 99%

Concept of hybrid embankment

Fukue¹,

Lechowicz²,

Takahashi³

et al. 2015

Annals of Warsaw University of Life Sciences, Land Reclamation

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Concept of hybrid embankment. An innovative technique which is similar to a natural process, i.e., biogeochemical (carbonate) diagenesis, is proposed to construct a hybrid embankment. In this study, the hybrid embankment is defi ned as a soil embankment which has a microbially induced framework structure of sand sheets and columns in the soft soil matrix. The sand materials are cemented with magnesium-calcite or dolomite, induced by ureolytic microbes. To design and construct hybrid embankments, fundamental problems, such as feasibility in terms of stability, geoenvironmental engineering practices, etc., are examined and discussed. It was shown that the hybrid embankment can be environmentally friendly and also can contribute solving technical and fi nancial problems encountered in actual practice.

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Cementation of Sands Due to Microbiologically-Induced Carbonate Precipitation

Cited by 33 publications

References 17 publications

Microbially Induced Sand Cementation Method Using <i>Pararhodobacter</i> sp. Strain SO1, Inspired by Beachrock Formation Mechanism

Microbially Induced Sand Cementation Method Using <i>Pararhodobacter</i> sp. Strain SO1, Inspired by Beachrock Formation Mechanism

Effective Use of Plant-Derived Urease in the Field of Geoenvironmental/ Geotechnical Engineering

Concept of hybrid embankment

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