EP0752708B1 - Matériau de colmatage et son procédé de fabrication - Google Patents
Matériau de colmatage et son procédé de fabrication Download PDFInfo
- Publication number
- EP0752708B1 EP0752708B1 EP19960401492 EP96401492A EP0752708B1 EP 0752708 B1 EP0752708 B1 EP 0752708B1 EP 19960401492 EP19960401492 EP 19960401492 EP 96401492 A EP96401492 A EP 96401492A EP 0752708 B1 EP0752708 B1 EP 0752708B1
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- EP
- European Patent Office
- Prior art keywords
- granules
- approximately
- aggregates
- binding material
- material according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F5/00—Transportable or portable shielded containers
- G21F5/005—Containers for solid radioactive wastes, e.g. for ultimate disposal
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/28—Treating solids
- G21F9/34—Disposal of solid waste
Definitions
- the invention relates mainly to a sealing material, obtained from powder compacted clay, from the smectite family.
- Such a sealing material can in particular be used on a waste storage site radioactive, to fill the remaining voids between the containers filled with waste and the walls of wells or galleries in which they are stored, and in order to fill the galleries access.
- the subject of the invention is also a method of manufacturing such a sealing material.
- Another technique for setting up filling material involves introducing directly the material in powder form, but under a sufficiently densified form so that it can fulfill its function. This technique is described in particular in document EP-A-0 568 430 corresponding to FR-A-2 690 456. It allows consider relatively high site densities. However, the material comprises between 30 and 60% of clay powder, which creates a lot of dust during installation.
- the main object of the invention is a filling material designed to be placed according to the technique described in document EP-A-0 568 430, but whose particle size distribution is optimized, so that the performance of the material be significantly improved compared to those of known fillers and that the amount of dust-generating clay powder be reduced.
- the invention also relates to a method manufacturing such a sealing material.
- the first object is reached by filling or sealing material formed from compacted clay powder in the form of granules obtained from aggregates, characterized in that it comprises a mixture of granules of maximum dimension at most equal to about 10 mm and larger aggregates, the aggregates being of defined three-dimensional geometry and delimited by smooth surfaces.
- Aggregates are formed from clay powder any compacted or smectite family.
- these aggregates are all identical and they have a unit volume of approximately 5 cm 3 .
- Each of the aggregates can in particular have two curved faces joined to each other in four edges forming a rectangle which has a length about 25 mm, the maximum thickness between the faces curved being about 15 mm.
- the granules comprise a first batch formed of granules of maximum dimension less than 3 mm, a second batch formed of granules of dimension maximum between 3 mm and 6 mm, and a third batch formed of granules of maximum dimension included between 6 mm and about 10 mm.
- the first, second and third batches of granules respectively constitute between about 13% and about 41%, between 0% and about 17% and between 0% and about 11% by weight of granules.
- the mixture comprises preferably between about 30% and about 70% by weight of aggregates.
- the powder is compacted clay in the form of aggregates in a machine tangential wheels fitted with frets.
- the sealing material conforms to the invention is obtained from swelling clay natural, from the family of smectites.
- a first step in the manufacturing process of the material clogging consists in compacting clay powder any or smectitic, designated by the reference 10, in a wheel compaction machine 12 tangentials equipped with frets.
- This machine allows to compact the clay powder 10 in the form of aggregates or berlingots 15.
- the berlingots 15 are all identical and have a geometry defined three-dimensional, that is, they are delimited in all directions by surfaces smooth which give them geometry and perfectly defined dimensions.
- this geometry is characterized by two curved faces joined to one another along four edges arranged in the same plane. These four edges form approximately a rectangle whose length and width are very close. Thus, this rectangle has for example a length of about 25 mm and a width of about 24 mm.
- the cartons 15 have between their curved faces a maximum thickness of approximately 15 mm and their unit volume is equal to approximately 5 cm 3 .
- the machine 12 used to ensure the compacting clay powder 10 is a machine for compaction with tangential wheels fitted with frets.
- Machines of this type are well known and used commonly to form aggregates of different dimensions, in the form of berlingots or balls, to from powdered materials such as coal, minerals, chemicals or pharmaceuticals, etc.
- Such a machine essentially comprises two tangential wheels 14, with horizontal axes, driven simultaneously rotating in the direction of the arrows F1 on the face.
- Each of the tangential wheels 14 is fitted on its periphery with a hoop fitted with cavities 16 whose shape is complementary to that of curved surfaces of the cartons 15 to be manufactured.
- the cavities 16 of the two wheels are automatically opposite each other other.
- the clay powder 10 is introduced and packed between the frets of the tangential wheels 14 by a hopper 18 in which is placed a screw d'Archimat 20.
- Clay powder, compacted or densified by Archimedes' screw 20, is agglomerated by frets which equip the tangential wheels 14, to form the cartons 15.
- the introduction of the clay powder 10 in the hopper 18 of the machine 12 tangential wheels fitted with frets can be preceded by a drying operation of this powder, if his condition justifies it.
- This drying step illustrated schematically by the rectangle 22 in the figure, dehydrates clay powder, for example by bringing it for a few hours at a temperature about 80 ° C until the water content reaches a residual value remaining high enough to guarantee the efficiency of compaction.
- the residual water content can be about 2 to 5%.
- a fraction, corresponding for example to about 50% by weight of the cartons 15 obtained at the exit from machine 12 with tangential wheels fitted of frets is kept as is, in order to be subsequently incorporated into the mixture forming the sealing material, as shown in arrow 24 on the face.
- the fraction remaining 15 cartons is then introduced into a crushing machine 28.
- the crushing operation performed in the machine 28 makes it possible to obtain granules 29 whose maximum dimensions are at most equal to about 10 mm.
- this crushing operation concerns a fraction of cartons 15 corresponding to around 50% by weight of these cartons.
- the granules 29 obtained at the outlet of the machine 28 have variable shapes and dimensions, which practically continuously spread out so that that their maximum dimensions are between 0 and about 10 mm. It should be noted that these dimensions are, in any case, substantially smaller than the dimensions of the cartons 15.
- the machine 28 used to crush the cartons 15 can be constituted by any machine of appropriate crushing.
- this machine 28 is a hammer mill, in which several hammers 30 are driven simultaneously in rotation by a wheel 32.
- the hammers 30 like wheel 32 are housed in a crushing 34 delimited by walls 36 forming anvils.
- the granules 29 obtained at the outlet of the machine 28 are then sieved, as illustrated by the reference 42 in the figure, so as to be divided into three different lots, according to their granulometry.
- the first batch is made of granules 29a whose maximum dimensions are less than 3 mm.
- the second batch is formed of granules 29b, the maximum dimensions are between 3 mm and 6 mm.
- the third batch is formed of granules 29c of which the maximum dimensions are between 6 mm and about 10 mm.
- the sealing material according to the invention can be obtained directly by mixing according to defined proportions of cartons 15 no crushed with granules 29a, 29b and 29c extracted from each of the three batches obtained after sieving the granules 29.
- the sealing material 44 a compound mixture approximately 20% by weight of granules 29a from the first batch, about 10% by weight of granules 29b of the second batch, approximately 20% by weight of granules 29c of third batch and about 50% by weight of cartons 15 not crushed.
- Material manufacturing trials clogging 44 were carried out according to the method which just described, using two types of powder 10. These two types of clay powder correspond to a clay marl and a clay swelling classified respectively A2 and A4 in the classification of fine soils from the technical guide Central Laboratory of Bridges and Roads (LCPC), entitled “Realization of embankments and form layers” (1992).
- LCPC Central Laboratory of Bridges and Roads
- the clay marl classified A2 is a marl to hydrobies extracted in a mine of Mines of Potasse of Alsace (MDPA). It is representative of a clay of site.
- the swelling clay classified A4 is a calcium smectite (FoCa7) extracted in the Basin Parisian. It is marketed by the Company French Bentonites and Derivatives. His performances hydromechanics are well known.
- the actual test consists in subjecting a sample with a particle size between 10 mm and 20 mm to conventional pounding, that is to say to the application of 100 normal Proctor check blows (weight of the check: 2,496 kg; height of fall: 30.5 cm), roughly twice the normal Proctor energy (0.59 kg / dm 3 ). It is usually considered that when the fragmentability coefficient FR is less than 7, the material is not very fragmentable.
- the A4 material revealed a significantly lower fragmentability (FR at most equal to about 5).
- VCPC VibroCompression to Controlled Parameters
- the second standardized test performed on each mix uses a Shear Press Roundabout (PCG).
- PCG Shear Press Roundabout
- the sample is simultaneously subjected to uniaxial compression and a shear.
- the material is placed in a test tube which describes a cone of revolution whose vertex is centered on the bottom base of the test tube.
- This test is representative of the means of industrial installation in horizontal layers such than the "isopactor" tire compactor.
- AG2 mixtures Mixture reference Composition% Wet density Water content W% measured Dry density VCPC granules aggregates 0/3 mm 3/6 mm 6/10 mm B15 / 25 mm AG21 15 25 60 0 1.88 4.0 1.81 AG22 40 30 30 0 2.01 3.8 1.93 AG23 65 20 15 0 2.04 3.8 1.97 AG24 45 55 0 0 1.93 3.8 1.86 AG4 mixtures AG41 15 25 60 0 1.68 10.8 1.52 AG42 40 30 30 0 1.75 9.6 1.60 AG43 65 20 15 0 1.75 8.9 1.61 AG44 45 55 0 0 1.75 8.9 1.61 AG2 Granulated Mixtures Mixture reference Pellets Aggregates Wet density Water content W (%) Dry density VCPC 0 / 10mm AG23 0 / 6mm AG24 3 / 6mm 0 / 3mm B15 / 25 mm % % % % % M21 70 30 1.83 4.1 1.75 M22 50 50 2.10 4.3 2.01 M23
- Table 4 shows that the dry density obtained with the VCPC test increases when the frequency of transverse vibration increases. In whatever the type of test, the density always increases when the water content decreases. This characteristic is illustrated by table 5, in the VCPC test case.
- the dry density of a continuous reconstituted mixture (0-10 mm) obtained from clay A2 does not bring any appreciable improvement compared to natural clay A2 which is simply ground, with regard to relates to densification performance.
- the VCPC test reveals a higher dry density when the mixtures obtained from clay A2 contain berlingots and this for a wide range of water content.
- Table 9 makes it possible to compare, like Table 7 in the case of clay A2, the results of the Proctor normal PN test and of the VCPC test applied to natural clay A4 and to mixtures AG43, F42 and M43, the compositions of which are given in Tables 2 and 3.
- Material Proctor normal PN test VCPC test Water content % Dry density Water content % Dry density Natural A4 clay 10 1.28 11.4 1.31 AG43 8.4 1.55 8.9 1.61 F42 10.2 1.56 9.3 1.73 M43 9.9 1.55 9.4 1.73
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Environmental & Geological Engineering (AREA)
- Sealing Material Composition (AREA)
- Processing Of Solid Wastes (AREA)
- Glanulating (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
- compactage d'une poudre d'argile, sous la forme d'agrégats de géométrie tridimensionnelle définie et délimités par des surfaces lisses
- concassage d'une première partie des agrégats, sous la forme de granulés dont la dimension maximale est au plus égale à environ 10 mm ; et
- mélange des granulés et d'une deuxième partie, non concassée, des agrégats.
Matériau | Densité de grain | Densité apparente Berlingot | Teneur en eau | Densité sèche Berlingot |
A2 | 2,80 | 2,28 | 5 % | 2,18 |
A4 | 2,70 | 2,16 | 10 % | 1,96 |
- D10(i) représente le diamètre de tamis correspondant à 10 % de tamisats, dans l'état initial du matériau ; et
- D10(f) représente le diamètre de tamis correspondant à 10 de tamisats à la fin de l'essai.
Mélanges AG2 | |||||||
Référence Mélange | Composition % | Densité humide | Teneur en eau W% mesurée | Densité sèche VCPC | |||
granulés | agrégats | ||||||
0/3 mm | 3/6 mm | 6/10 mm | B15/25 mm | ||||
AG21 | 15 | 25 | 60 | 0 | 1,88 | 4,0 | 1,81 |
AG22 | 40 | 30 | 30 | 0 | 2,01 | 3,8 | 1,93 |
AG23 | 65 | 20 | 15 | 0 | 2,04 | 3,8 | 1,97 |
AG24 | 45 | 55 | 0 | 0 | 1,93 | 3,8 | 1,86 |
Mélanges AG4 | |||||||
AG41 | 15 | 25 | 60 | 0 | 1,68 | 10,8 | 1,52 |
AG42 | 40 | 30 | 30 | 0 | 1,75 | 9,6 | 1,60 |
AG43 | 65 | 20 | 15 | 0 | 1,75 | 8,9 | 1,61 |
AG44 | 45 | 55 | 0 | 0 | 1,75 | 8,9 | 1,61 |
Mélanges Granulés AG2 | ||||||||
Référence mélange | Granulés | Agrégats | Densité humide | Teneur en eau W(%) | Densité sèche VCPC | |||
0/10mm AG23 | 0/6mm AG24 | 3/6mm | 0/3mm | B15/25 mm | ||||
% | % | % | % | % | ||||
M21 | 70 | 30 | 1,83 | 4,1 | 1,75 | |||
M22 | 50 | 50 | 2,10 | 4,3 | 2,01 | |||
M23 | 30 | 70 | 2,09 | 4,5 | 2,00 | |||
M24 | 50 | 50 | 2,06 | 4,3 | 1,98 | |||
F22 | 50 | 50 | 2,05 | 4,3 | 1,96 | |||
F23 | 50 | 50 | 1,96 | 4,3 | 1,88 | |||
B15/25 mm | 100 | 1,55 | 4,4 | 1,48 | ||||
Mélanges AG4 | ||||||||
AG43 | AG44 | |||||||
M41 | 70 | 30 | 1,84 | 8,7 | 1,69 | |||
M42 | 50 | 50 | 1,87 | 8,8 | 1,73 | |||
M43 | 30 | 70 | 1,89 | 9,4 | 1,73 | |||
M44 | 30 | 70 | 1,89 | 9,3 | 1,73 | |||
F42 | 30 | 70 | 1,90 | 9,3 | 1,73 | |||
F43 | 30 | 70 | 1,68 | 10,4 | 1,52 | |||
B15/25 mm | 100 | 1,35 | 10,4 | 1,52 |
Mélange | Fréquence (Hz) | Densité humide | Teneur en eau W % | Densité sèche |
AG2 M22 | 50 | 1,91 | 4,4 | 1,83 |
80 | 2,06 | 4,5 | 1,97 | |
100 | 2,09 | 4,5 | 2,00 | |
AG4 M43 | 50 | 1,60 | 9,9 | 1,46 |
80 | 1,85 | 10,0 | 1,68 | |
100 | 1,89 | 9,4 | 1,73 |
Mélange | Procédé d'humidification | Compactage | Densité humide | Teneur en eau W % | Densité sèche |
AG2 | Pulvérisation de l'eau | immédiat | 1,91 | 10,2 | 1,74 |
Pulvérisation de l'eau | après 2 h | 1,88 | 9,7 | 1,71 | |
Mélange M22 | Confinement en enceinte climatique | 1,97 | 7,9 | 1,82 | |
Teneur en eau naturelle | 2,09 | 4,5 | 2,00 | ||
Séchage en enceinte climatique | 2,07 | 1,8 | 2,03 | ||
AG4 | Pulvérisation de l'eau | immédiat | 1,67 | 19,4 | 1,40 |
Pulvérisation de l'eau | après 2 h | 1,52 | 19,4 | 1,27 | |
Mélange M43 | Confinement en enceinte climatique | 1,74 | 17,2 | 1,48 | |
Teneur en eau naturelle | 1,89 | 9,4 | 1,73 | ||
Séchage en enceinte climatique | 1,94 | 5,6 | 1,84 |
MELANGE | COMPOSITION | Teneur en eau W % | Densité sèche en PCG |
AG2 | |||
AG23 | 0/10 mm | 3,8 | 2,08 |
M22 | 50%0/10mm AG23 + 50%B15/25mm | 4,3 | 2,12 |
F22 | 50 % 0/3mm + 50 % B 15/25 mm | 4,4 | 2,12 |
AG4 | |||
AG43 | 0/10 mm | 8,9 | 1,67 |
M43 | 30%0/10mmAG43 + 70%B15/25mm | 9,4 | 1,81 |
F42 | 30 % 0/3mm + 70 % B15/25 mm | 9,3 | 1,78 |
A2 | Densité sèche Proctor normal PN | Densité sèche VCPC | ||||
Teneur en eau W% | Argile Naturelle | Argile Granulée | Argile Naturelle | Argile Granulée | ||
Mélange 0/25mm M22 | Mélange 0/10mm AG23 | Mélange 0/25mm M22 | Mélange 0/10mm AG23 | |||
0,2 | 1,93 | |||||
1,1 | 1,92 | |||||
1,8 | 2,03 | |||||
2,0 | 1,91 | |||||
2,2 | 1,94 | |||||
3,6 | 1,86 | |||||
3,9 | 1,89 | |||||
4,3 | 1,94 | |||||
4,5 | 1,88 | 1,95 | 2,00 | |||
5,8 | 1,85 | |||||
7,5 | 1,83 | |||||
8,0 | 1,86 | 1,73 | 1,82 | |||
9,8 | 1,85 |
Réf | Composition % | Densité sèche | ||||
Mélange | <3mm | 3-6mm | 6-10mm | B15/24 | VCPC | PCG |
AG42 | 40 | 30 | 30 | 0 | 1,60 | |
AG43 | 65 | 20 | 30 | 0 | 1,61 | 1,67 |
AG44 | 45 | 55 | 0 | 0 | 1,61 | |
M41 | 40,5 | 14 | 10,5 | 30 | 1,69 | |
M42 | 32,5 | 10 | 7,5 | 50 | 1,73 | |
M43 | 19,5 | 6 | 4,5 | 70 | 1,73 | 1,81 |
M44 | 13,5 | 16,5 | 0 | 70 | 1,73 | |
F42 | 30 | 0 | 0 | 70 | 1,73 | 1,78 |
Matériau | Essai Proctor normal PN | Essai VCPC | ||
Teneur en eau % | Densité sèche | Teneur en eau % | Densité sèche | |
Argile A4 naturelle | 10 | 1,28 | 11,4 | 1,31 |
AG43 | 8,4 | 1,55 | 8,9 | 1,61 |
F42 | 10,2 | 1,56 | 9,3 | 1,73 |
M43 | 9,9 | 1,55 | 9,4 | 1,73 |
Claims (13)
- Matériau de colmatage formé de poudre d'argile compactée sous forme de granulés obtenus à partir d'agrégats, caractérisé par le fait qu'il comprend un mélange de granulés (29a,29b, 29c) de dimension maximale au plus égale à environ 10 mm et d'agrégats (15) de plus grandes dimensions, les agrégats étant de géométrie tridimensionnelle définie et délimités par des surfaces lisses.
- Matériau de colmatage selon la revendication 1, caractérisé par le fait que les granulés et les agrégats sont formés de poudre d'argile compactée de la famille des smectites.
- Matériau de colmatage selon l'une quelconque des revendications 1 et 2, caractérisé par le fait que les granulés comprennent un premier lot formé de granulés (29a) de dimension maximale inférieure à 3 mm, un deuxième lot formé de granulés (29b) de dimension maximale comprise entre 3 mm et 6 mm, et un troisième lot formé de granulés (29c) de dimension maximale comprise entre 6 mm et environ 10 mm.
- Matériau de colmatage selon la revendication 3, caractérisé par le fait que les premier, deuxième et troisième lots constituent respectivement entre environ 13 % et environ 41 %, entre 0 % et environ 17 % et entre 0 % et environ 11 % en poids du matériau.
- Matériau de colmatage selon l'une quelconque des revendications 1 à 4, caractérisé par le fait que le mélange comprend entre environ 30 % et environ 70 % en poids d'agrégats (15).
- Matériau de colmatage selon l'une quelconque des revendications précédentes, caractérisé par le fait que les agrégats (15) sont tous identiques.
- Matériau de colmatage selon la revendication 6, caractérisé par le fait que les agrégats (15) ont un volume unitaire d'environ 5 cm3.
- Matériau de colmatage selon l'une quelconque des revendications 6 et 7, caractérisé par le fait que chaque agrégat (15) a deux faces bombées réunies l'une à l'autre selon quatre arêtes formant sensiblement un rectangle.
- Matériau de colmatage selon la revendication 8, caractérisé par le fait que le rectangle présente une longueur d'environ 25 mm, l'épaisseur maximale entre les faces bombées étant d'environ 15 mm.
- Procédé de fabrication d'un matériau de colmatage, caractérisé par le fait qu'il comprend les étapes suivantes :compactage d'une poudre d'argile (10), sous la forme d'agrégats (15) de géométrie tridimensionnelle définie et délimités par des surfaces lisses;concassage d'une première partie des agrégats (15), sous la forme de granulés (29) dont la dimension maximale est au plus égale à environ 10 mm ; etmélange des granulés (29) et d'une deuxième partie, non concassée, des agrégats (15).
- Procédé selon la revendication 10, caractérisé par le fait qu'on effectue un tamisage des granulés (29) de façon à séparer ces derniers en un premier, un deuxième et un troisième lots correspond à des granulés (29a,29b,29c) dont la dimension maximale est respectivement inférieure à 3 mm, comprise entre 3 mm et 6 mm et comprise entre 6 mm et environ 10 mm, et qu'on mélange des granulés appartenant à chacun de ces trois lots avec la deuxième partie des agrégats (15).
- Procédé selon la revendication 10, caractérisé par le fait qu'on mélange entre environ 30 % et environ 70 % en poids d'agrégats (15) avec entre environ 13 % et environ 41 % en poids de granulés (29a) appartenant au premier lot, entre 0 % et environ 17 % en poids de granulés (29b) appartenant au deuxième lot et entre 0 % et environ 11 % en poids de granulés (29c) appartenant au troisième lot.
- Procédé selon l'une quelconque des revendications 9 à 11, caractérisé par le fait qu'on effectue le compactage de la poudre d'argile (10) sous la forme d'agrégats (15) dans une machine (12) à roues tangentielles (14) équipées de frettes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9508240A FR2736357B1 (fr) | 1995-07-07 | 1995-07-07 | Materiau de colmatage et son procede de fabrication |
FR9508240 | 1995-07-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0752708A1 EP0752708A1 (fr) | 1997-01-08 |
EP0752708B1 true EP0752708B1 (fr) | 1999-12-29 |
Family
ID=9480792
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19960401492 Expired - Lifetime EP0752708B1 (fr) | 1995-07-07 | 1996-07-05 | Matériau de colmatage et son procédé de fabrication |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0752708B1 (fr) |
JP (1) | JPH0933698A (fr) |
CA (1) | CA2180395A1 (fr) |
DE (1) | DE69605866T2 (fr) |
ES (1) | ES2143158T3 (fr) |
FR (1) | FR2736357B1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19729151C2 (de) * | 1997-07-08 | 2003-07-10 | Jost-Ulrich Kuegler | Verfahren zur Ablagerung und Sicherung radioaktiver Stoffe |
JP5339185B2 (ja) * | 2008-12-19 | 2013-11-13 | 清水建設株式会社 | ベントナイト成形体の製造方法 |
FR3030612A1 (fr) * | 2014-12-18 | 2016-06-24 | Agence Nat Pour La Gestion Des Dechets Radioactifs | Bouchon pour galerie de stockage et son procede d'elaboration |
CN107963635B (zh) * | 2017-11-28 | 2020-09-08 | 中科院广州能源所盱眙凹土研发中心 | 粘土分级提纯设备及方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4950426A (en) * | 1989-03-31 | 1990-08-21 | Westinghouse Electric Corp. | Granular fill material for nuclear waste containing modules |
IT1235121B (it) * | 1989-07-13 | 1992-06-18 | Casagrande Spa | Sistema per lo stoccaggio permanente dei rifiuti radioattivi. |
FR2690456B1 (fr) * | 1992-04-27 | 1999-12-24 | Commissariat Energie Atomique | Materiau de colmatage, procede de fabrication de ce materiau de colmatage et procede de mise en place de ce materiau sur un site de stockage de conteneurs. |
-
1995
- 1995-07-07 FR FR9508240A patent/FR2736357B1/fr not_active Expired - Fee Related
-
1996
- 1996-07-03 CA CA 2180395 patent/CA2180395A1/fr not_active Abandoned
- 1996-07-05 EP EP19960401492 patent/EP0752708B1/fr not_active Expired - Lifetime
- 1996-07-05 DE DE1996605866 patent/DE69605866T2/de not_active Expired - Fee Related
- 1996-07-05 ES ES96401492T patent/ES2143158T3/es not_active Expired - Lifetime
- 1996-07-08 JP JP17819196A patent/JPH0933698A/ja not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
ES2143158T3 (es) | 2000-05-01 |
EP0752708A1 (fr) | 1997-01-08 |
JPH0933698A (ja) | 1997-02-07 |
FR2736357B1 (fr) | 1997-08-08 |
CA2180395A1 (fr) | 1997-01-08 |
DE69605866D1 (de) | 2000-02-03 |
FR2736357A1 (fr) | 1997-01-10 |
DE69605866T2 (de) | 2000-07-27 |
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