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AbstractAbstract
[en] A procedure for the manufacture of concrete vessels with an inner lining to contain hazardous materials is described. The procedure is designed to avoid enclosed air pockets or faults in the concrete like gravel lumps. Protruding reinforcement parts are fitted with rubber buffers to protect the vessel from being damaged in case of accidents (falling from a crane) or rolling away. Also thin-walled vessels can be produced by this method
Original Title
Werkwijze voor de vervaardiging van betonnen vaten, in het bijzonder containers voor gevaarlijke stoffen, en met deze werkwijze vervaardigde container
Primary Subject
Source
31 Jan 1974; 7 p; NL PATENT DOCUMENT 7401389/A/; 2 figs.
Record Type
Patent
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AbstractAbstract
[en] The velocities of ultrasonic waves in a uniaxially compressed concrete are influenced by microcracking. The experimental results are commented and a model of propagation in a randomly microcracked medium is built. The model shows a high anisotropy of propagation when all cracks have the same orientation
[fr]
Les celerites de propagation d'ondes ultrasonores dans une eprouvette de beton soumise a des cycles de compression simple sont reliees a son etat de microfissuration. On presente les resultats experimentaux et on construit un modele theorique de propagation en milieu fissure aleatoirement. On montre en particulier la forte anisotropie induite par une orientation preferentielle des fissuresOriginal Title
Propagation des ondes et microfissuration du beton
Primary Subject
Record Type
Journal Article
Journal
C. R. Seances Acad. Sci., Ser. B; v. 289(13); p. 215-218
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Oshima, Masanori; Hasegawa, Toru.
Hitachi Ltd., Tokyo (Japan)
Hitachi Ltd., Tokyo (Japan)
AbstractAbstract
[en] Purpose: To provide a simple radiation shielding method for the shielding wall of a building processing radioactive substances through which pipe lines are passed. Constitution: A concrete shielding block having insertion holes for pipe lines are formed, to which engaging recesses and engaging ridges are provided for the positioning of the pipe line insertion holes. Then, the concrete shielding block is inserted to a sleeve embedded in the shielding wall of the building and shielding plugs are inserted. (Kawakami, Y.)
Primary Subject
Source
16 Nov 1978; 2 p; JP PATENT DOCUMENT 53-131388/A/; Available from JAPATIC. Also available from INPADOC
Record Type
Patent
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INIS VolumeINIS Volume
INIS IssueINIS Issue
Hirscheider, E.; Balk, O.
Gesellschaft fuer Strahlen- und Umweltforschung m.b.H. Muenchen, Neuherberg (Germany, F.R.)
Gesellschaft fuer Strahlen- und Umweltforschung m.b.H. Muenchen, Neuherberg (Germany, F.R.)
AbstractAbstract
[en] The form-fitting brick allows to form simple geometric figures like straight lines, angles, polygons and crosses and to cover surfaces homogeneously without making use of another shape of brick. The brick has got superficies consisting of plane rectangular quadrangles part of which showing a concave connecting contour for the adjoining brick which has got a convex connecting contour. According to the invention both external ends of the concave connecting contours are shaped as reinforcing ribs. The bricks may be manufactured from concrete. The description mentions some variants. (UWI)
[de]
Der Strahlenschutz-Formbaustein erlaubt es, einfache geometrische Figuren wie Geraden, Winkel, Vielecke und Kreise zu bilden und Flaechen homogen auszulegen, ohne dass auf eine andere Steinform zurueckgegriffen wird. Der Stein besitzt Mantelflaechen aus ebenen rechtwinkligen Vierecken, ein Teil der Mantelflaechen weist eine konkave Anschlusskontur fuer den benachbarten Stein auf, der eine entsprechende konvexe Anschlusskontur besitzt. Erfindungsgemaess sind die beiden aeusseren Enden der konkaven Anschlusskonturen als Verstaerkungsrippen ausgebildet. Die Steine koennen aus Beton ausgefuehrt werden. Die Beschreibung gibt einige Varianten an. (UWI)Original Title
Strahlenschutz-Formbaustein
Primary Subject
Secondary Subject
Source
3 Apr 1980; 6 p; DE PATENT DOCUMENT 2700088/C/; Available from Deutsches Patentamt, Muenchen, Germany, F.R
Record Type
Patent
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Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Huang, C.L.D.; Siang, H.H.; Kirmser, P.G.
Structural mechanics in reactor technology. Transactions. Vol. H
Structural mechanics in reactor technology. Transactions. Vol. H
AbstractAbstract
[en] A diffusion theory with a linear or a nonlinear coefficient of diffusivity is insufficient for the characterization of the drying behaviour of hydrated concrete slabs. A general mathematical model, based on nonequilibrium, irreversible flows of heat and mass, yields a set of nonlinear partial differential equations of parabolic type. Implicit finite difference calculations for a concrete slab yield moisture, temperature, and pressure histories as well as global average drying rates. Graphs show that during the pendular state of dessication, diffusion, capillary, and evaporation-condensation processes are the governing mechanisms in drying. (orig.)
Primary Subject
Source
Jaeger, T.A.; Boley, B.A. (eds.); Commission of the European Communities, Brussels (Belgium); Bundesanstalt fuer Materialpruefung, Berlin (Germany, F.R.); International Association for Structural Mechanics in Reactor Technology; p. H1/6 (1-8); ISBN 0 444 85364 2; 
; 1979; p. H1/6 (1-8); North-Holland Publishing Co; Amsterdam, Netherlands; 5. international conference on structural mechanics in reactor technology (SMIRT-5). 9. international seminar and 2. international seminar on structural reliability of mechanical components and subassemblies of nuclear power plants and 2. international seminar on containment of fast breeder reactors (CONFABRE-2); Berlin, Germany, F.R; 9 - 21 Aug 1979; INKA-CONF--79-321-284
; 1979; p. H1/6 (1-8); North-Holland Publishing Co; Amsterdam, Netherlands; 5. international conference on structural mechanics in reactor technology (SMIRT-5). 9. international seminar and 2. international seminar on structural reliability of mechanical components and subassemblies of nuclear power plants and 2. international seminar on containment of fast breeder reactors (CONFABRE-2); Berlin, Germany, F.R; 9 - 21 Aug 1979; INKA-CONF--79-321-284
Record Type
Book
Literature Type
Conference
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Compernass, J.
Deutsches Patentamt, Muenchen (Germany, F.R.)
Deutsches Patentamt, Muenchen (Germany, F.R.)
AbstractAbstract
[en] The cadmium, boron or hafnium compound, particularly boron oxide granulate is enriched to saturation by the H2O contained in or added to a mixture of plastic dispersion and cement gel, and is added to the concrete mixture. A mixture of polyvinyl propionate, oil of terpentine, xylol, fatty acid ester, oil of paraffin and chlorine-free bitumen emulsion is suitable as dispersion. Following mixing, the concrete is densified to values of 2.51 to 2.55 g/cm3 by common methods. Steel or carbon fibers can be added to the concrete mixture to further increase the strength values and shielding effect. (DG)
[de]
Die Cadmium-, Bor- oder Hafniumverbindung, insbesondere das Bortrioxid-Granulat, wird durch das in einem Gemisch aus Kunststoffdispersion und Zementgel enthaltene oder zugesetzte H2O bis zur Saettigung angereichert und der Betonmischung beigegeben. Als Dispersion eignet sich eine Mischung aus Polyvinylpropionat, Terpentinoel, Xylol, Fettsaeureester, Paraffinoel und chlorfreier Bitumenemulsion. Nach der Durchmischung erfolgt eine Verdichtung des Betons auf Werte von 2,51 bis 2,55 g/cm3 mit ueblichen Verfahren. Zur weiteren Erhoehung der Festigkeitswerte und Abschirmwirkung koennen der Betonmischung Stahl- oder Kohlenstofffasern zugesetzt werden. (DG)Original Title
Verfahren zum Herstellen eines neutronensicheren Betons
Primary Subject
Source
15 Feb 1979; 2 p; DE PATENT DOCUMENT 2749059/B/
Record Type
Patent
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AbstractAbstract
[en] Specifications are set forth for natural mineral aggregates, consisting of materials such as barite, magnetite, ilmenite, limonite, and serpentine and synthetic aggregates such as ferrophosphorous for use in radiation-shielding concretes. Sizing, composition, specific gravity, and fixed water content are all covered in the standards of specifications
Primary Subject
Source
ASTM-C--637-73.
Record Type
Journal Article
Literature Type
Standard
Journal
Annual Book of ASTM (American Society for Testing and Materials) Standards; (no.45); p. 165-168
Country of publication
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AbstractAbstract
[en] Proceeding from a general and theoretical chapter the textbook deals with individual categories of inorganic non-metallic materials such as mineralic materials, glass and glass ceramics, non-oxidic materials, concrete-like materials, fibrous materials, and composite materials. From the point of view of materials science the presentation of the subject considers in all cases the connection between chamical composition and stucture, physical properties, and application behaviour. 237 figures, 72 tables, and 173 references are included
Original Title
Anorganisch-nichtmetallische Werkstoffe
Primary Subject
Secondary Subject
Source
1982; 282 p; VEB Deutscher Verlag fuer Grundstoffindustrie; Leipzig
Record Type
Book
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AbstractAbstract
[en] The possibility of using numerical method for the analysis of reinforced concrete structures is limited by the incomplete knowledge of the behavior of concrete under multiaxial stress states. While many experimental and theorectical investigations have been and are presently carried out to clarify this problem, an attempt is being made here to use the available experimental data to achieve an ultimate strength criterion apt to be used in an analytical model. (orig.)
Primary Subject
Source
Jaeger, T.A.; Boley, B.A. (eds.); Commission of the European Communities, Brussels (Belgium); Bundesanstalt fuer Materialpruefung, Berlin (Germany, F.R.); International Association for Structural Mechanics in Reactor Technology; p. H2/4 (1-10); ISBN 0 444 85364 2; ; 1979; p. H2/4 (1-10); North-Holland Publishing Co; Amsterdam, Netherlands; 5. international conference on structural mechanics in reactor technology (SMIRT-5). 9. international seminar and 2. international seminar on structural reliability of mechanical components and subassemblies of nuclear power plants and 2. international seminar on containment of fast breeder reactors (CONFABRE-2); Berlin, Germany, F.R; 9 - 21 Aug 1979; INKA-CONF--79-321-288
; 1979; p. H2/4 (1-10); North-Holland Publishing Co; Amsterdam, Netherlands; 5. international conference on structural mechanics in reactor technology (SMIRT-5). 9. international seminar and 2. international seminar on structural reliability of mechanical components and subassemblies of nuclear power plants and 2. international seminar on containment of fast breeder reactors (CONFABRE-2); Berlin, Germany, F.R; 9 - 21 Aug 1979; INKA-CONF--79-321-288
Record Type
Book
Literature Type
Conference
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Primary Subject
Source
v. 3(pt.H); 1973; H 6/1, 1 p; 2. international conference on structural mechanics in reactor technology; Berlin, F.R. Germany; 10 Sep 1973; Published in summary form only.
Record Type
Report
Literature Type
Conference
Report Number
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