Calcium aluminate
Phosphate-modified calcium aluminate cement for radioactive waste encapsulation
... in these systems is phosphate dependent; and in the work reported here monophosphate-modified formulations did not fully set or develop significant compressive strength, whereas polyphosphate-modified formulations ...
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Identification of the hydrate gel phases present in phosphate-modified calcium aluminate binders
... hexagonal calcium aluminate hydrates to cubic phases in hydrated calcium aluminate cements (CAC) can involve undesirable porosity changes and loss of ...hydrated calcium ...
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Exploiting in-situ solid-state NMR spectroscopy to probe the early stages of hydration of calcium aluminate cement
... We have demonstrated that the hydration reaction of calcium aluminate cement can be monitored successfully by in-situ solid-state 27 Al NMR spectroscopy. We emphasize that the CLASSIC NMR methodology used ...
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Reduction of water content in calcium aluminate cement with/out phosphate modification for alternative cementation technique
... Cementation of the secondary aqueous wastes from TEPCO Fukushima Daiichi Nuclear Power Plant is chal- lenging due to the signi fi cant strontium content and radioactivity, leading to a potential risk of hydrogen gas ...
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Peculiar Set Retarding Effect of Miserly Amounts of Pyrocatechol on Calcium Aluminate Cement Hydration
... affects calcium aluminate cements (CAC) setting and hydration considering regular CAC primarily consists of CaO·Al 2 O 3 and contains other calcium aluminates as ...
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Photocatalytic Degradation of Violet GL2B Azo dye by using Calcium Aluminate Nanoparticle in presence of Solar light
... observed that the synthesized Calcium aluminate (average particle size 38.55 nm) is photosensitive and effective in degrading selected azo dye (violet GL2B) completely in a short interval of time (120 ...
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Phosphate modification of calcium aluminate cement to enhance stability for immobilisation of metallic wastes
... Calcium aluminate cements (CACs) have been identified as promising waste encapsulants 3 , with some potentially highly desirable properties as a wasteform matrix 1 ...monocalcium aluminate (CA), the ...
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Evaluation of Calcium Aluminate/Calcium Phosphate Based Bio-Cements as Root-end Filling Material
... could be detected in Fig. (9. a) that represents the XRD patterns of CA pastes cured in saliva for 14 days showed the characteristic XRD peaks of hydroxyapatite compound that may be precipitated in pores from saliva ...
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Functional Acrylic Polymer as Corrosion Inhibitor of Carbon Steel in Autoclaved Air Foamed Sodium Silicate Activated Calcium Aluminate/Class F Fly Ash Cement
... Table 2 summarizes the elapsed times at the onset and end of each No. 2 and No. 3 reactions along with the total energy evolved from these two reactions for 0, 0.5, 1.0, and 2.0 wt% AP-modified foamed slurries. As is ...
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Development and characterization of α tricalcium phosphate/monocalcium aluminate composite bone cement
... hand, calcium aluminate ce- ments (CACs) set fast and have a high initial strength and good corrosion resistance in contact with body fluids, making them excellent dental restorative ma- ...
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Hydration of Strontium-doped Monocalcium Aluminate
... Monocalcium aluminate (CA) is the major hydraulic phase in the calcium aluminate cements (CAC). Solid solution of Ca 1-x Sr x Al 2 O 4 may be formed if the cement raw materials are impure with Sr ...
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Sustainable solidification of ferrochrome slag through geopolymerisation: a look at the effect of curing time, type of activator and liquid solid ratio
... the aluminate activation resulted in the formation of calcium silicate hydrate and calcium aluminate silicate hydrate in the geopolymers whereas silicate activation resulted in the formation ...
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Calcium exchange and ionized cytoplasmic calcium in resting and activated human monocytes
... of calcium tracer flux, distribution, content, and ionized cytoplasmic calcium during monocyte ...monocyte calcium was developed from 45Ca uptake and exodus curves which indicated that cell ...
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Role of Inositol 1, 4, 5-Triphosphate on Heart Rate in Isolated Heart Models of Wistar Rats
... Ankyrin-B is an adaptor protein molecule with molecular weight of 220 kDa. It is responsible for the post translational stability and also for targeting the IP 3 receptor to the sarcoplasmic reticulum near the junction ...
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Synthesis and Characterization of Sodium (Na) Doped Magnesium Aluminate (MgAl2O4) Nanoparticle by Solution Combustion Method
... Synthesis and Characterization of Sodium Na Doped Magnesium Aluminate MgAl2O4 Nanoparticle by Solution Combustion Method Abdullah Al Mahmood1, Md.. Mintu Ali2, Mamunur Rahman3, Md.[r] ...
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Wear and Corrosion Performance of PEO-synthesized SiC Nanocomposite Coatings: Effect of Processing Time and Current Density
... In the present study, a systematic investigation of the effect of the process parameters on the final properties of the PEO coatings was done. Protective oxide coatings were prepared on AZ31 magnesium alloy by plasma ...
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Electronic structure of high-k transition metal oxides and their silicate and aluminate alloys
... thereby providing the potential for many orders of magnitude reductions in direct tunneling current. However, decreases in tunneling current anticipated from increased physical thick- ness are mitigated in part by ...
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Optical study of MAl2-2xY2xO4 (M = Mg, Ni and Zn) aluminate nanoparticles
... showed that optical band gap increases with an increase in yttrium content.. Introduction:.[r] ...
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Exposing elusive cationic magnesium-chloro aggregates in aluminate complexes through donor control
... magnesium aluminate battery electrolytes, have now been rationally and selectively prepared for the first time by controlling the magnesium solvating Lewis donor ...
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Synthesis and Characterization of γ-Alumina Porous Nanoparticles from Sodium Aluminate Liquor with Two Different Surfactants
... sodium aluminate liquor, HCl, NaOH, Polyethylene glycol (PEG) and polyvinyl alcohol ...Sodium aluminate liquor was extracted from Bayer liquor of alumina product processed in the Jajarm alumina ...
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