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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 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
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
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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

Record Type
Book
Literature Type
Conference
Country of publication
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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
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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 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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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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INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Following a description of the containments for different types of nuclear reactors, the report summarises the present position concerning national Codes. Design is considered based on limit state principles, and various aspects of design, including the use of single and double barrier containments, are described. Constructional details, such as the placing of tendons, slipforming and prestressing operations are dealt with in a practical manner. The report contains special chapters on testing and on inspection of serviceability. (author)
Primary Subject
Source
1978; 56 p; Cement and Concrete Association for the Federation Internationale de la Precontrainte; Slough; ISBN 0 7210 1108 X; 

Record Type
Book
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INIS VolumeINIS Volume
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AbstractAbstract
[en] When the calculated results of the concrete decomposition model are compared with experiments the concrete decomposition enthalpy is found to be in good agreement for silicaceous concrete. For lime-stone concrete, however, a considerable discrepancy exists which needs further investigation. The evaluation of thermite experiments (topic 06.01.12) showed that the transient erosion of a horizontal concrete surface and the time dependent surface temperature of the melt agrees in tendency with the WECHSL calculations. The starting time of solidification processes as well as the maximum erosion depth also agree in order of magnitude with the experimental observations. The results of the extended film model for the heat transfer to inclined walls was checked with model experiments (subliming dry ice slabs in water). (orig.)
[de]
Aus einem Vergleich der Ergebnisse des Betonzerstoerungsmodells mit Messwerten folgt, dass die Betonzerstoerungsenthalpie fuer silikatischen Beton sicher angegeben werden kann, waehrend bei kartonatischem Beton Diskrepanzen auftreten, die noch naeher geklaert werden muessen. Die Auswertung der Thermitversuche (PNS 4246) ergab, dass der zeitliche Verlauf der Erosion an horizontalen Betonflaechen und die zeitabhaengige Oberflaechentemperatur durch WECHSL in der Tendenz richtig berechnet werden kann. Der Zeitpunkt des Einsetzens von Erstarrungsvorgaengen wie auch die maximale Erosionstiefe stimmen ebenfalls groessenordnungsmaessig mit der Versuchsbeobachtung ueberein. Die Ergebnisse des erweiterten Filmmodells fuer den Waermeuebergang an geneigte Waende wurde mit Modellversuchen (sublimierende Trockeneisplatten in Wasser) untersucht. (orig.)Original Title
Hydrodynamische und thermische Modelle zur Wechselwirkung einer Kernschmelze mit Beton
Primary Subject
Source
Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.). Projekt Nukleare Sicherheit; p. 495-513; May 1978; p. 495-513
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Report
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