JP5481579B2 - 煉瓦、タイル、床板、天井パネル及び屋根材並びにこれらの製造方法 - Google Patents
煉瓦、タイル、床板、天井パネル及び屋根材並びにこれらの製造方法 Download PDFInfo
- Publication number
- JP5481579B2 JP5481579B2 JP2013057194A JP2013057194A JP5481579B2 JP 5481579 B2 JP5481579 B2 JP 5481579B2 JP 2013057194 A JP2013057194 A JP 2013057194A JP 2013057194 A JP2013057194 A JP 2013057194A JP 5481579 B2 JP5481579 B2 JP 5481579B2
- Authority
- JP
- Japan
- Prior art keywords
- ferrite powder
- construction
- firing
- molding material
- ray shielding
- 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.)
- Active
Links
- 239000011449 brick Substances 0.000 title claims description 28
- 238000004519 manufacturing process Methods 0.000 title claims description 27
- 239000000463 material Substances 0.000 title claims description 11
- 229910000859 α-Fe Inorganic materials 0.000 claims description 76
- 238000010276 construction Methods 0.000 claims description 69
- 239000012778 molding material Substances 0.000 claims description 58
- 238000010304 firing Methods 0.000 claims description 56
- 239000000843 powder Substances 0.000 claims description 51
- 230000005251 gamma ray Effects 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 239000004927 clay Substances 0.000 claims description 13
- 229910052712 strontium Inorganic materials 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 10
- 229910052788 barium Inorganic materials 0.000 claims description 9
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims 4
- 229910004298 SiO 2 Inorganic materials 0.000 claims 1
- 230000005855 radiation Effects 0.000 description 58
- 230000000694 effects Effects 0.000 description 33
- 230000000052 comparative effect Effects 0.000 description 26
- 238000000465 moulding Methods 0.000 description 19
- 238000000034 method Methods 0.000 description 13
- 239000002699 waste material Substances 0.000 description 12
- 239000004567 concrete Substances 0.000 description 10
- 230000001678 irradiating effect Effects 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 238000009415 formwork Methods 0.000 description 4
- 229910052622 kaolinite Inorganic materials 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 229910052621 halloysite Inorganic materials 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000012857 radioactive material Substances 0.000 description 3
- 239000000941 radioactive substance Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 3
- GUTLYIVDDKVIGB-OUBTZVSYSA-N Cobalt-60 Chemical compound [60Co] GUTLYIVDDKVIGB-OUBTZVSYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 206010034972 Photosensitivity reaction Diseases 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000010427 ball clay Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910001649 dickite Inorganic materials 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 230000036211 photosensitivity Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- HPTYUNKZVDYXLP-UHFFFAOYSA-N aluminum;trihydroxy(trihydroxysilyloxy)silane;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O[Si](O)(O)O HPTYUNKZVDYXLP-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- TVFDJXOCXUVLDH-RNFDNDRNSA-N cesium-137 Chemical compound [137Cs] TVFDJXOCXUVLDH-RNFDNDRNSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- BDAGIHXWWSANSR-NJFSPNSNSA-N hydroxyformaldehyde Chemical compound O[14CH]=O BDAGIHXWWSANSR-NJFSPNSNSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical compound [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 229910000018 strontium carbonate Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- G21F1/00—Shielding characterised by the composition of the materials
- G21F1/02—Selection of uniform shielding materials
- G21F1/06—Ceramics; Glasses; Refractories
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
- C04B35/2658—Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
- C04B35/2666—Other ferrites containing nickel, copper or cobalt
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
- C04B35/2683—Other ferrites containing alkaline earth metals or lead
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3213—Strontium oxides or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3215—Barium oxides or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3241—Chromium oxides, chromates, or oxide-forming salts thereof
- C04B2235/3243—Chromates or chromites, e.g. aluminum chromate, lanthanum strontium chromite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3262—Manganese oxides, manganates, rhenium oxides or oxide-forming salts thereof, e.g. MnO
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
- C04B2235/3274—Ferrites
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3275—Cobalt oxides, cobaltates or cobaltites or oxide forming salts thereof, e.g. bismuth cobaltate, zinc cobaltite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3279—Nickel oxides, nickalates, or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3281—Copper oxides, cuprates or oxide-forming salts thereof, e.g. CuO or Cu2O
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3296—Lead oxides, plumbates or oxide forming salts thereof, e.g. silver plumbate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3409—Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5445—Particle size related information expressed by the size of the particles or aggregates thereof submicron sized, i.e. from 0,1 to 1 micron
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5463—Particle size distributions
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/72—Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/72—Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
- C04B2235/724—Halogenide content
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/72—Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
- C04B2235/726—Sulfur content
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/72—Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
- C04B2235/727—Phosphorus or phosphorus compound content
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- High Energy & Nuclear Physics (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Compounds Of Iron (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Description
組成式: AO・nX2O3
で表わされるものが用いられる。ただし、上記組成式において、nは、1〜9の実数で定義されるモル比である。
本発明の構造物構築用成形体及びその製造方法の好適な実施態様について、より具体的に説明する。本発明の構造物構築用成形体は、
[1]フェライト粉末を60重量%以上の割合で含む成形材料を製造する成形材料製造工程と、
[2]成形材料製造工程で得られた成形材料を所定形状に成形する成形工程と、
[3]成形工程で所定形状に成形された成形材料を焼成する焼成工程と、
を経ることにより製造されるものとなっている。構造物構築用成形体の焼成後成形体嵩密度は、3.5g/cm3以上と、一般的な構造物構築用成形体の焼成後成形体嵩密度(2.2g/cm3程度)よりもかなり高くなっており、優れた放射線遮蔽効果を奏することができるものとなっている。
成形材料製造工程は、フェライト粉末を60重量%以上の割合で含む成形材料を製造する工程である。本実施態様においては、フェライト粉末に粘土を添加して混合することにより、成形材料を製造する混合工程となっている。フェライト粉末は、炭酸ストロンチウム(SrCO3)や炭酸バリウム(BaCO3)などの原料に酸化鉄(Fe2O3)と各種添加剤を混合して造粒及び焼成した後、破砕して粉末化したものを用いている。また、粘土には、カオリナイトの一種であるボールクレイを用いている。
上記の成形材料製造工程を終えると、続いて成形工程を行う。成形工程は、成形材料製造工程(混合工程)でフェライト粉末が混合された成形材料を所定形状に成形する工程である。成形材料の成形方法は、特に限定されないが、プレス機を用いたプレス成形により行うと好ましい。この際、真空状態(減圧状態)にしてプレス(真空プレス)成形を行うと、成形材料を密にして、成形材料(構造物構築用成形体)の焼成後成形体嵩密度をさらに高め、より優れた放射線遮蔽効果を奏する構造物構築用成形体を得ることも可能である。また、得られる構造物構築用成形体の圧縮強度をさらに高めることも可能になる。
上記の成形工程を終えると、続いて焼成工程を行う。焼成工程は、成形工程で所定形状に成形された成形材料を焼成する工程である。成形材料の焼成温度は、上述した通り、通常、1000〜1400℃とされる。しかし、成形材料の焼成温度を低くしすぎると、成形材料を十分に焼成できず、焼成後の成形材料(構造物構築用成形体)が割れやすくなるおそれがある。このため、成形材料の焼成温度は、1100℃以上とすると好ましく、1200℃以上とするとより好ましい。一方、成形材料の焼成温度を高くしすぎると、成形材料に含まれる粘土やフェライト粉末が溶融してしまい、成形材料の形状を維持できなくなるおそれがある。このため、成形材料の焼成温度は、1350℃以下とすると好ましい。本実施態様において、成形材料の焼成温度は、1280℃(約1300℃)としている。
上記の焼成工程を終えると、構造物構築用成形体が完成する。構造物構築用成形体の焼成後成形体嵩密度は、3.5g/cm3以上となっており、一般的な煉瓦などの構造物構築用成形体と比較してかなり大きくなっている。このため、本発明の構造物構築用成形体は、一般的な構造物構築用成形体と比較して優れた放射線遮蔽効果を奏することができるものとなっている。また、本発明の構造物構築用成形体は、一般的な構造物構築用成形体と比較して、強度の高いものとなっている。
本発明の構造物構築用成形体の放射線遮蔽効果を調べるため、実施例1〜9の構造物構築用成形体と、比較例1,2の構造物構築用成形体を作製するとともに、比較例3,4の構造物構築用成形体を入手し、それぞれの構造物構築用成形体について放射線遮蔽効果の評価を行った。実施例1〜9及び比較例1,2の構造物構築用成形体は、それぞれ、ストロンチウム・フェライト(SrO・6Fe2O3)、バリウム・フェライト(BaO・6Fe2O3)、ボールクレイ(カオリナイト)、ホウ酸(B(OH)3)、N3(粘土焼成破砕物と生粘土の混合物からなる成形材料をプレス成形して焼成したものであり、その組成は、シリカ(SiO2)が64重量%、アルミナ(Al2O3)が32重量%、酸化鉄(III)(Fe2O3)が2重量%である。)、クロマイト(FeCr2O4)又はマンガン(Mn)を下記表1のように配合した成形材料をプレス成形した後、大気雰囲気の下で、焼成温度1280℃で120時間焼成したものである。
まず、上記の実施例1〜3の構造物構築用成形体及び比較例1〜4の構造物構築用成形体の放射線遮蔽効果の評価を以下の感光度試験により行った。すなわち、実施例1〜3の構造物構築用成形体及び比較例1〜4の構造物構築用成形体の下側に放射線で感光するフィルム(富士フィルム社製の「工業用X−レイフィルム IX100」)をそれぞれ敷いた状態で、各構造物構築用成形体の上面側から放射線を一定時間に亘って照射した後、それぞれのフィルムの感光度(白黒画像における黒色の濃度)を測定した。この感光度試験に用いる構造物構築用成形体の寸法は、実施例1〜3及び比較例1〜4で同一とし、その厚さ(放射線を透過させる方向の厚さ)は60mmで揃えた。フィルムの黒色の濃度の測定は、濃度計(コニカミノルタ社製の「Sakura DENSITMETER PDA−81」)を使用した。放射線は、X線とγ線の2種類を使用した。γ線の線源は、192Irである。構造物構築用成形体の放射線遮蔽効果が高ければ高いほど、フィルムに達する放射線量が少なく、フィルムは感光(白色から黒色に変色)しないため、前記濃度計で測定した濃度の数値は小さくなる。実施例1〜3の構造物構築用成形体及び比較例1〜4の構造物構築用成形体にX線とγ線をそれぞれ照射したときのフィルムの濃度の値を、それぞれ下記表4に示す。
続いて、γ線透過試験で減衰係数μを測定することよって、上記の実施例1〜9の構造物構築用成形体の放射線遮蔽効果の評価を行った。γ線透過試験は、実施例1〜9の構造物構築用成形体をそれぞれ厚さ1cmで10cm角の板状試料に調整して行った。測定機器には、CANBERRA社製の低バックグラウンド純ゲルマニウム半導体検出器「CANBERRA GC1520」を用いた。測定結果の解析は、線解析ソフト「wPKarea2006」を用いてスペクトルの積分強度を評価することにより行った。標準線源は、日本アイソトープ協会のγ線標準線源であるCs−137(8.10E+03 Bq)とCo−60(4.32E+03 Bq)を用いた。このγ線透過試験によって得られた減衰係数μの値を下記表5に示す。
本発明の構造物構築用成形体は、その用途を特に限定されるものではないが、上記のように、非常に優れた放射線遮蔽効果を奏するものであるため、放射線を遮蔽する必要のある用途(放射線遮蔽構造物の構築(建築を含む。))に好適に用いることができる。特に、X線やγ線などの透過力の強い放射線を遮蔽する用途に好適に用いることができる。そして、本発明の構造物構築用成形体は、施工が容易で短期間で行えるため、緊急性を要する用途に好適に用いることができる。例えば、放射性物質で汚染された廃棄物の仮置き場を囲うための構造物を構築するための放射線遮蔽構造物構築用成形体として好適に用いることができる。本発明の構造物構築用成形体を用いることにより、原発の事故後に問題となっている、放射性物質で汚染された廃棄物の仮置き場の不足を解消できることも期待される。
Claims (9)
- 組成式がAO・nFe2O3(ただし、当該組成式において、Aは、Sr又はBaの中から選択される元素であり、nは、1〜9の実数で定義されるモル比である。)で表わされるフェライト粉末を90重量%以上の割合で含む成形材料を所定形状にプレス成形後に大気雰囲気下で焼成してフェライト粉末を焼結させることにより、焼成後の圧縮強度が200MPa以上とされるとともに、焼成後の密度が4.2g/cm3以上とされたことを特徴とする、γ線遮蔽構造物構築用又はX線遮蔽構造物構築用の煉瓦。
- 焼成温度が1000〜1400℃であり、焼成時間が5〜150時間である請求項1記載の煉瓦。
- フェライト粉末の粒径が0.5〜20μmである請求項1又は2記載の煉瓦。
- 前記成形材料が、Al2O3、SiO2又はB2O3の中から選択される1種以上の酸化物を主成分とする粘土を含むものである請求項1〜3いずれか記載の煉瓦。
- 組成式がAO・nFe2O3(ただし、当該組成式において、Aは、Sr又はBaの中から選択される元素であり、nは、1〜9の実数で定義されるモル比である。)で表わされるフェライト粉末を90重量%以上の割合で含む成形材料を所定形状にプレス成形後に大気雰囲気下で焼成してフェライト粉末を焼結させることにより、焼成後の圧縮強度が200MPa以上とされるとともに、焼成後の密度が4.2g/cm3以上とされたことを特徴とする、γ線遮蔽構造物構築用又はX線遮蔽構造物構築用のタイル。
- 組成式がAO・nFe2O3(ただし、当該組成式において、Aは、Sr又はBaの中から選択される元素であり、nは、1〜9の実数で定義されるモル比である。)で表わされるフェライト粉末を90重量%以上の割合で含む成形材料を所定形状にプレス成形後に大気雰囲気下で焼成してフェライト粉末を焼結させることにより、焼成後の圧縮強度が200MPa以上とされるとともに、焼成後の密度が4.2g/cm3以上とされたことを特徴とする、γ線遮蔽構造物構築用又はX線遮蔽構造物構築用の床板。
- 組成式がAO・nFe2O3(ただし、当該組成式において、Aは、Sr又はBaの中から選択される元素であり、nは、1〜9の実数で定義されるモル比である。)で表わされるフェライト粉末を90重量%以上の割合で含む成形材料を所定形状にプレス成形後に大気雰囲気下で焼成してフェライト粉末を焼結させることにより、焼成後の圧縮強度が200MPa以上とされるとともに、焼成後の密度が4.2g/cm3以上とされたことを特徴とする、γ線遮蔽構造物構築用又はX線遮蔽構造物構築用の天井パネル。
- 組成式がAO・nFe2O3(ただし、当該組成式において、Aは、Sr又はBaの中から選択される元素であり、nは、1〜9の実数で定義されるモル比である。)で表わされるフェライト粉末を90重量%以上の割合で含む成形材料を所定形状にプレス成形後に大気雰囲気下で焼成してフェライト粉末を焼結させることにより、焼成後の圧縮強度が200MPa以上とされるとともに、焼成後の密度が4.2g/cm3以上とされたことを特徴とする、γ線遮蔽構造物構築用又はX線遮蔽構造物構築用の屋根材。
- 組成式がAO・nFe2O3(ただし、当該組成式において、Aは、Sr又はBaの中から選択される元素であり、nは、1〜9の実数で定義されるモル比である。)で表わされるフェライト粉末を90重量%以上の割合で含む成形材料を所定形状にプレス成形後に大気雰囲気下で焼成してフェライト粉末を焼結させることにより、焼成後の圧縮強度が200MPa以上とされるとともに、その焼成後の密度を4.2g/cm3以上とすることを特徴とするγ線遮蔽構造物構築用又はX線遮蔽構造物構築用の煉瓦、タイル、床板、天井パネル又は屋根材の製造方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013057194A JP5481579B2 (ja) | 2012-03-19 | 2013-03-19 | 煉瓦、タイル、床板、天井パネル及び屋根材並びにこれらの製造方法 |
PCT/JP2013/075966 WO2014147872A1 (en) | 2013-03-19 | 2013-09-18 | Molded body for structure construction and molded body for structure construction manufacturing method |
TW102134041A TW201442979A (zh) | 2013-03-19 | 2013-09-18 | 用於結構建築物之成形體及其製造方法及陶瓷體製造方法 |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012062079 | 2012-03-19 | ||
JP2012062079 | 2012-03-19 | ||
JP2013057194A JP5481579B2 (ja) | 2012-03-19 | 2013-03-19 | 煉瓦、タイル、床板、天井パネル及び屋根材並びにこれらの製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2013224933A JP2013224933A (ja) | 2013-10-31 |
JP5481579B2 true JP5481579B2 (ja) | 2014-04-23 |
Family
ID=48096126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2013057194A Active JP5481579B2 (ja) | 2012-03-19 | 2013-03-19 | 煉瓦、タイル、床板、天井パネル及び屋根材並びにこれらの製造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20140021412A1 (ja) |
EP (1) | EP2828219A1 (ja) |
JP (1) | JP5481579B2 (ja) |
CN (1) | CN104334513B (ja) |
CA (1) | CA2867478A1 (ja) |
TW (1) | TWI586627B (ja) |
WO (1) | WO2013141406A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101858025B1 (ko) | 2017-10-25 | 2018-05-16 | 주식회사 상산쎄라믹 | 표면흡수 저감형 점토벽돌 및 그 제조방법 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5414933B1 (ja) | 2013-06-28 | 2014-02-12 | 三石耐火煉瓦株式会社 | 煉瓦、タイル、床板、天井パネル及び屋根材並びにこれらの製造方法 |
TWI666661B (zh) * | 2015-01-22 | 2019-07-21 | 日商保德科技股份有限公司 | 六角板狀鐵氧體粉末及其製造方法,以及使用該鐵氧體粉末的樹脂組合物及成型體 |
CN106747362B (zh) * | 2017-03-06 | 2020-06-23 | 广州浩方节能科技有限公司 | 一种陶瓷研磨体及其制备方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5716397A (en) * | 1980-07-02 | 1982-01-27 | Nippon Electric Co | Shieling material for radiation such as x-ray and gamma-ray or the like |
JPS63134555A (ja) * | 1986-11-25 | 1988-06-07 | 高田 利夫 | フエライト複合体の製造法 |
JPH07235414A (ja) * | 1994-02-23 | 1995-09-05 | Toshiaki Hata | 磁気レンガ |
KR100222756B1 (ko) * | 1996-11-30 | 1999-10-01 | 이형도 | 저온소성용 고주파 연자성재료 및 이를 이용한 인덕터의 제조방법 |
JP2893447B1 (ja) * | 1998-02-02 | 1999-05-24 | 柴田陶器株式会社 | マイクロ波遮蔽焼成物及びその製造法 |
JP3659136B2 (ja) | 2000-07-07 | 2005-06-15 | 松下電工株式会社 | 交流/直流分離回路 |
JP2002267792A (ja) * | 2001-03-08 | 2002-09-18 | Taisei Corp | 放射線遮蔽用モルタル構造物の施工方法及び放射線遮蔽用コンクリート構造物の施工方法 |
JP2002338339A (ja) * | 2001-05-17 | 2002-11-27 | Fdk Corp | 酸化物磁性材料の製造方法 |
GB0127320D0 (en) * | 2001-11-14 | 2002-01-02 | Ida Emc Ltd | Reduction of elecromagnetic radiation |
JP2008094966A (ja) | 2006-10-12 | 2008-04-24 | Jfe Steel Kk | コークス乾式消火設備の除塵器で捕集したダストの回収設備および回収方法 |
JP4878255B2 (ja) * | 2006-10-16 | 2012-02-15 | 国立大学法人北海道大学 | フェライト含有セラミック体及びその製造方法 |
CN102153333B (zh) * | 2010-12-19 | 2014-11-26 | 佛山市中国科学院上海硅酸盐研究所陶瓷研发中心 | 一种可磁化陶瓷的制备方法 |
-
2013
- 2013-01-16 US US13/743,255 patent/US20140021412A1/en not_active Abandoned
- 2013-03-18 TW TW102109518A patent/TWI586627B/zh not_active IP Right Cessation
- 2013-03-19 JP JP2013057194A patent/JP5481579B2/ja active Active
- 2013-03-19 WO PCT/JP2013/058893 patent/WO2013141406A1/en active Application Filing
- 2013-03-19 CA CA2867478A patent/CA2867478A1/en not_active Abandoned
- 2013-03-19 CN CN201380025215.2A patent/CN104334513B/zh not_active Expired - Fee Related
- 2013-03-19 EP EP13716453.9A patent/EP2828219A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101858025B1 (ko) | 2017-10-25 | 2018-05-16 | 주식회사 상산쎄라믹 | 표면흡수 저감형 점토벽돌 및 그 제조방법 |
Also Published As
Publication number | Publication date |
---|---|
CN104334513B (zh) | 2018-01-26 |
CN104334513A (zh) | 2015-02-04 |
TWI586627B (zh) | 2017-06-11 |
TW201406697A (zh) | 2014-02-16 |
WO2013141406A1 (en) | 2013-09-26 |
CA2867478A1 (en) | 2013-09-26 |
JP2013224933A (ja) | 2013-10-31 |
EP2828219A1 (en) | 2015-01-28 |
US20140021412A1 (en) | 2014-01-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Mann et al. | Experimental investigation of clay fly ash bricks for gamma-ray shielding | |
JP5481579B2 (ja) | 煉瓦、タイル、床板、天井パネル及び屋根材並びにこれらの製造方法 | |
US10636534B2 (en) | Shielding material for shielding radioactive ray and preparation method thereof | |
Cay et al. | Neutron radiation tests about FeCr slag and natural zeolite loaded brick samples | |
KR101651523B1 (ko) | 벽돌, 타일, 바닥판, 천장 패널 및 지붕재와 이들의 제조 방법 | |
Khater et al. | Impact of alkali activated mortar incorporating different heavy metals on immobilization proficiency using gamma rays attenuation | |
Agrawal et al. | Green conversion of hazardous red mud into diagnostic X-ray shielding tiles | |
Hannachi et al. | Structure and radiation-shielding characteristics of BTO/MnZnFeO ceramic composites | |
Jaha et al. | Ionizing radiation shielding efficacy of common mortar and concrete used in Bangladeshi dwellings | |
US20240018050A1 (en) | Highly dense red mud shields for x-ray and gamma-ray attenuation | |
TW201442979A (zh) | 用於結構建築物之成形體及其製造方法及陶瓷體製造方法 | |
Kuzmanović et al. | The influence of building material structure on radon emanation | |
Khan et al. | Development and evaluation of grit iron scale-MgO heavy density concrete for moderate-temperature radiation shielding | |
JP6080562B2 (ja) | 放射線遮蔽積層材 | |
JP2015152464A (ja) | 放射線遮蔽体及び放射線遮蔽構造 | |
Avcıoğlu et al. | Waste to shield: Tailoring cordierite/mullite/zircon composites for radiation protection through controlled sintering and Y2O3 addition | |
OA21253A (en) | High dense red mud shields for x - and gamma - ray attenuation | |
El-Samrah et al. | Characterization and Assessment of Fast Neutron Attenuation Properties of Developed Concrete Mixes at Different Temperatures | |
Pleitt | Determination of linear attenuation coefficients of chemically bonded phosphate ceramics | |
CN117645447A (zh) | 防辐射混凝土掺和料、混凝土、固化物及其制备方法 | |
Lukuttsova et al. | Radiation safety of construction materials and industrial wastes | |
Citoglu et al. | X-Ray Shielding Properties of Cement-Based Coating Materials Produced with Different Aggregates | |
Jaha et al. | Case Studies in Construction Materials | |
Chandra et al. | ADVANCED NON TOXIC LEAD FREE AND HIGHLY EFFECTIVE SHIELDING MATERIALS FOR X-RAY DIAGNOSTIC AND CT SCANNER ROOM: UTILIZING INDUSTRIAL WASTES. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20130821 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20131029 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20131216 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20140121 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20140217 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 5481579 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |