scholarly journals A glass-ceramic material for fixation of radioactive waste

2011 ◽  
Vol 43 (2) ◽  
pp. 225-229 ◽  
Author(s):  
L.S. Bozadzhiev ◽  
G.T. Georgiev ◽  
R.L. Bozadzhiev
Keyword(s):  
Radioactive Waste ◽  
Ceramic Material ◽  
Glass Ceramic ◽  
Glass Ceramic Material ◽  
Residual Glass ◽  
Starting Mixture

In this article, a starting mixture for the preparation of glass-ceramic material for radioactive waste (RW), consisting of 85-95 mass % basanite and 5-15 mass % oxides of elements in I-VIII group of the Periodical table of elements imitating RW, is proposed. The glass-ceramic material is obtained by melting the starting mixture in air at 1450?C for 1 hour and by further crystallization of the melts at 950?C for 30 minutes. It has been noticed that the texture of the glass-ceramic material is microgranular. The main mineral is pyroxene, while a mixture phases are magnetite, hematite and residual glass. It was shown that the RW elements are fixed in the pyroxene and partly in the admixture phases.

Alteration of a Zirconolite Glass-Ceramic Matrix under Hydrothermal Conditions

2002 ◽  
Vol 713 ◽  
Author(s):  
Christelle Martin ◽  
Isabelle Ribet ◽  
Thierry Advocat
Keyword(s):  
Ceramic Material ◽  
Glass Ceramic ◽  
Glass Phase ◽  
Initial Rate ◽  
Ceramic Matrix ◽  
Glass Ceramic Material ◽  
Residual Glass ◽  
Hydrothermal Conditions ◽  
Reactive Surface Area ◽  
Ceramic Matrices

ABSTRACTGlass-ceramic matrices based on zirconolite (CaZrTi2O7) are being considered for specific conditioning of plutonium or the minor actinides. The actinides are distributed throughout the zirconolite crystals and the residual glass phase. Since zirconolite alteration is extremely limited, however, actinide release from the glass-ceramic material is mainly attributable to alteration of the residual glass. Zirconolite glass-ceramic specimens and specimens corresponding to the residual glass phase alone were therefore altered under hydrothermal conditions (150°C) and under initial rate conditions (100°C) to compare their kinetic behavior and estimate the effect of the crystals on material alteration. Under hydrothermal conditions, alteration occurred during the first few days: SEM observations showed greater alteration of the glass-ceramic material due to a phenomenon of preferential glass alteration around the zirconolite crystals; after three days the alteration rate had considerably diminished and both specimens exhibited similar behavior. Under initial rate conditions the initial rates differed due to a variation in the reactive surface area of the glass-ceramic.

scholarly journals Thermolysis of fibreglass polyester composite and reutilisation of the glass fibre residue to obtain a glass–ceramic material

2012 ◽  
Vol 93 ◽  
pp. 104-112 ◽  
Author(s):  
F.A. López ◽  
M.I. Martín ◽  
F.J. Alguacil ◽  
J. Ma. Rincón ◽  
T.A. Centeno ◽  
...  
Keyword(s):  
Ceramic Material ◽  
Glass Fibre ◽  
Glass Ceramic ◽  
Glass Ceramic Material ◽  
Polyester Composite

Granulated foam glass–ceramic material from zeolitic rocks

2008 ◽  
Vol 22 (5) ◽  
pp. 999-1003 ◽  
Author(s):  
Vladimir I. Vereshagin ◽  
Svetlana N. Sokolova
Keyword(s):  
Ceramic Material ◽  
Glass Ceramic ◽  
Foam Glass ◽  
Glass Ceramic Material

scholarly journals An approach to synthesizing a 3D nanostructured glass-ceramic material based on intensive high-pressure torsion

2016 ◽  
Vol 40 (4) ◽  
pp. 489-500
Author(s):  
A. V. Andrianova ◽  
I. L. Vinogradova ◽  
A. Kh. Sultanov ◽  
I. K. Meshkov ◽  
G. I. Abdrakhmanova ◽  
...  
Keyword(s):  
High Pressure ◽  
Ceramic Material ◽  
Glass Ceramic ◽  
High Pressure Torsion ◽  
Glass Ceramic Material

scholarly journals Characterization of a wollastonite glass-ceramic material prepared using sugar cane bagasse ash (SCBA) as one of the raw materials

2014 ◽  
Vol 98 ◽  
pp. 209-214 ◽  
Author(s):  
Silvio R. Teixeira ◽  
Agda E. Souza ◽  
Claudio L. Carvalho ◽  
Victor C.S. Reynoso ◽  
Maximina Romero ◽  
...  
Keyword(s):  
Ceramic Material ◽  
Sugar Cane ◽  
Glass Ceramic ◽  
Raw Materials ◽  
Sugar Cane Bagasse ◽  
Glass Ceramic Material ◽  
Sugar Cane Bagasse Ash

Glass-Ceramic Material from the SiO2-Al2O3-CaO System Using Sugar-Cane Bagasse Ash (SCBA)

2011 ◽  
Vol 18 (11) ◽  
pp. 112020 ◽  
Author(s):  
S R Teixeira ◽  
M Romero ◽  
J Ma Rincón ◽  
R S Magalhães ◽  
A E Souza ◽  
...  
Keyword(s):  
Ceramic Material ◽  
Sugar Cane ◽  
Glass Ceramic ◽  
Sugar Cane Bagasse ◽  
Glass Ceramic Material ◽  
Sugar Cane Bagasse Ash
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