calcite precipitation
The Reduction of the Permeability of a Lateritic Soil through the Application of Microbially Induced Calcite Precipitation
... the calcite precipitation had occurred in the first 380 mm section of the sand sample, with approximately 40% being found in the remaining 370 mm ...early calcite precipi- tation in the ...
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Studying the Use of Microbial Induced Calcite Precipitation as a Shallow Stabilization Alternative to Treat Expansive Soils
... Expansive soils usually recognized as swell-shrink soils have been a problem for civil infrastructure for a long time. It has been a very common practice to use chemical stabilizers including cement and lime to stabilize ...
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Effect of some biotic factors on microbially-induced calcite precipitation in cement mortar
... microbiologically-induced calcite precipitation (MICP) mixed with filling material such as silica fume and sand (Gollapudi et ...precipitate calcite that has a coarse crystalline structure which ...
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EVALUATING THE SUITABILITY OF MICROBIAL INDUCED CALCITE PRECIPITATION TECHNIQUE FOR STABILIZING EXPANSIVE SOILS
... Physical properties of soil can be modified by the use of mechanical compaction and/or compaction grouting while chemical properties of soil can be modified by the use of chemical stabilizers such as Portland cement, ...
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Optimum Condition for the Application of Enzyme-Mediated Calcite Precipitation Technique as Soil Improvement Technique
... Enzyme-mediated calcite precipitation (EMCP) as a soil improvement technique has been evaluated as an alternative method for improving engineering properties of ...
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Effect Of Bacteria Calcite Precipitation On Compressive Strength Of General Concrete Cubes
... bacterial precipitation (MICP) by different bacterial stain (bacillus pasturii and bacillus spharicus) 7,28 days of bacterial treatment the improvement compressive strength, self-healing of cracks and porous by ...
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Effect of Bacteria Calcite Precipitation on Compressive Strength of General Concrete Cubes
... bacterial precipitation (MICP) by different bacterial stain (bacillus pasturii and bacillus spharicus) 7,28 days of bacterial treatment the improvement compressive strength, self-healingof cracks and porous by ...
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Studying the Applicability of Biostimulated Calcite Precipitation in Stabilizing Expansive Soils
... (Wenderoth et al. 2003). Several research studies have injected solutions containing a model ureolytic bacterium, Sporosarcina pasteurii, into soil followed by passing nutrient solution which induces the calcite ...
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A REVIEW OF EFFECT OF BACTERIAL CALCITE PRECIPITATION ON GROUND IMPROVEMENT
... bacterial calcite precipitation technique has become more popular as environmental friendly process and shown great research exposure for sandy as well as in organic ...induced calcite ...
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Constitutive Response of Microbial Induced Calcite Precipitation Cemented Sands.
... a calcite bond were evaluated by loading two rounded silica gravel particles ...induce calcite precipitation, following the procedure outlined in Mortensen et ...of calcite was visually ...
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The potential for phosphorus pollution remediation by calcite precipitation in UK freshwaters
... for calcite precipitation within the water column of the rivers ...do calcite precipitation and SRP co-precipitation never occur within the rivers? The answer to this seems to be no, ...
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The Effect of the CO32- to Ca2+ Ion activity ratio on calcite precipitation kinetics and Sr2+partitioning
... final calcite products from experi- ments are shown for the two extreme ion ratio condi- tions (Figures 3b, c) and for the maximum growth rate condition at r = ...with calcite growth along ...
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Probing the Inhibitory Mechanism of Calcite Precipitation by Organic Phosphonates in Industrial Water Cooling System
... For further analysis of the effectiveness of inhibition, we consider the binding energy of interaction between the three phosphonate molecules and the calcite (104) surface in the aqueous phase listed in Table II. ...
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Application of microbially induced calcite precipitation in erosion mitigation and stabilization of sandy soil foreshore slopes : a preliminary investigation
... 1 2 Figure 5: Changes in slope per tidal cycle simulated in all three soil masses slope collapse and 3 erosion phases 4 The mechanism of slope failure was found to be similar for all thr[r] ...
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Guidance for investigating calcite precipitation by urea hydrolysis for geomaterials
... This study investigated the kinetics of UH and 10 compared different sources of urease enzyme: those microbially cultivated in the laboratory 11 i.e., Sporosarcina pasteurii and those ex[r] ...
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Calcite precipitation from by-product red gypsum in aqueous carbonation process
... Fig. 4–6 are FESEM photomicrographs of by-product red gypsum samples at different stages of processing. In both the dissolution and carbonation experiments, the change in the morphology of the particle surface was ...
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Improving the Resiliency of Coastal Sand Dunes using Microbial Induced Calcite Precipitation.
... All of the cumulative data points for the four rounds of soil column tests were plotted on a cementation versus unconfined compressive strength plot. As there is a lack of published literature that investigates MICP ...
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Kinetics of calcite precipitation by ureolytic bacteria under aerobic and anaerobic conditions
... Carbonate precipitation is a natural phenomenon that may also be utilized in many subsurface engineering applica- tions (Phillips et ...Mineral precipitation can be induced by bacteria as a by-product of ...
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An Overview on Fungi as Self Healing Agent in Biomineralization of Calcite
... calcite precipitation (MICP) and perhaps, one of the most important multidisciplinary works done so far in the fields of microbiology with civil engineering. This is a kind of interdisciplinary research ...
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Immobilisation of nanoparticles by occlusion into microbial calcite
... the precipitation of a wide range of ...enzymatic precipitation of phosphate produces hydroxyapatite which binds signi fi cant quantities of dissolved heavy metals (Handley-Sidhu et ...2011). Calcite ...
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