US20140061542A1 - Radiation shielding structure composition - Google Patents

Radiation shielding structure composition Download PDF

Info

Publication number
US20140061542A1
US20140061542A1 US13/715,058 US201213715058A US2014061542A1 US 20140061542 A1 US20140061542 A1 US 20140061542A1 US 201213715058 A US201213715058 A US 201213715058A US 2014061542 A1 US2014061542 A1 US 2014061542A1
Authority
US
United States
Prior art keywords
percent
radiation shielding
shielding structure
radiation
composition
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.)
Abandoned
Application number
US13/715,058
Inventor
Jeffrey L. Selph
James W. Paul, Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mag Phos Inc
Original Assignee
Grancrete Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Grancrete Inc filed Critical Grancrete Inc
Priority to US13/715,058 priority Critical patent/US20140061542A1/en
Publication of US20140061542A1 publication Critical patent/US20140061542A1/en
Assigned to MAG PHOS, INC. reassignment MAG PHOS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GRANCRETE, INC.
Abandoned legal-status Critical Current

Links

Images

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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
    • 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
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00258—Electromagnetic wave absorbing or shielding materials
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00862—Uses not provided for elsewhere in C04B2111/00 for nuclear applications, e.g. ray-absorbing concrete
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • U.S. Pat. No. 5,786,611 proposes containers for storing spent nuclear wastes.
  • the containers comprise concrete with stable uranium oxide aggregate and a neutron absorbing material such as B 2 O 3 , HfO 3 or Gd 2 O 3 .
  • U.S. Pat. No. 4,727,257 proposes a radiation shielding composition comprising an aggregate-containing cement based mortar wherein the aggregate comprises floated gelata and a boron mineral.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Radiation structures formed from a composition including calcium silicate, magnesium or calcium oxides and an acid phosphate are provided. The composition may also include fly ash or kaolin.

Description

    RELATED APPLICATIONS
  • This application is a continuation application of U.S. application Ser. No. 12/572,795, filed Oct. 2, 2009, which claims priority to U.S. Provisional Application Ser. No. 61/102,997, filed Oct. 6, 2008, the contents of which are hereby incorporated herein by reference in their entireties.
    • FIELD AND BACKGROUND OF THE INVENTION
  • The present invention relates generally to a composition useful in radiation shielding applications.
  • The use of radiation shielding structures is common, particularly in the nuclear technology field and in any radiation producing facility. Exemplary radiation sources include cosmic rays, x-rays in medical facilities, nuclear reactors, cathode ray tubes (e.g. TV and computer monitors) and the like. Radiation doses are carefully monitored in a wide variety of settings, and there are a number of regulatory standards for human exposure levels. Radiation shielding is also important for limiting exposure of sensitive equipment to radiation. For example, protection of a nuclear reaction vessel from gamma rays. Another example, is the protection of other medical devices from radiation from a medial device that emits radiation.
  • Concrete or cement is often a candidate material for use in radiation shielding. For example, U.S. Pat. No. 5,786,611 proposes containers for storing spent nuclear wastes. The containers comprise concrete with stable uranium oxide aggregate and a neutron absorbing material such as B2O3, HfO3 or Gd2O3. U.S. Pat. No. 4,727,257 proposes a radiation shielding composition comprising an aggregate-containing cement based mortar wherein the aggregate comprises floated gelata and a boron mineral. U.S. Publication No. 2002/0165082 proposes a phosphate ceramic radiation shielding composition comprises a magnesium, potassium and phosphorous binder, and means for dissipating heat such as B4C, Bi2O3, Fe2O3, Fe3O4, Pb metal and lead.
  • There is, however, a need for compositions for radiation shielding structures which are less expensive and less dependent on heavy metals while providing acceptable levels of shielding from radiation.
    • SUMMARY OF THE INVENTION
  • Radiation shielding structures are widely used for shielding of nuclear power plants, particle accelerators, research reactors, laboratory equipment, and radiation and x-ray medical facilities. An important aspect is selecting the specific shielding structure as the required attenuation coefficient or reduction factor. The Linear Attenuation Coefficient (μ) is dependent on the density of the shielding material. To obviate the effects of variations in the density of a material, the linear attenuation coefficient is expressed as a mass attenuation coefficient (μ/ρ) cm2g−1. It is the direct measure of the effectiveness of a shielding material based upon unit mass of a material.
  • To this end, the present invention provides a radiation shielding structure composition comprising calcium silicate, magnesium oxide and an acid phosphate. The radiation shielding structure has an improved attenuation coefficient as compared to ordinary concrete based on photon energies of 0.662 MeV (5 μCi Cs-137 source) and 1.173 MeV (1 μCi Co-60 source).
  • In another embodiment, the present invention provides a radiation shielding structure composition comprising magnesium or calcium oxide, an acid phosphate and fly ash and having an improved attenuation coefficient as compared to ordinary concrete based on photon energies of 0.662 MeV (5 μCi Cs-137 source) and 1.173 MeV (1 μCi Co-60 source).
  • In still another embodiment, the present invention provides a radiation curing structure composition comprising magnesium or calcium oxide, an acid phosphate and kaolin and having an improved attenuation coefficient as compared to ordinary concrete based on photon energies of 0.662 MeV (5 μCi Cs-137 source) and 1.173 MeV (1 μCi Co-60 source).
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a graph of attenuation coefficients for the radiation shielding structure compositions of Examples 1-6 and ordinary concrete (“OC”) for 0.66 MeV photon energy using a 5 mCi Cs-137 source.
  • FIG. 2 is a graph of attenuation coefficients for the radiation shielding structure compositions of Examples 1-6 and ordinary concrete (“OC”) for 1.173 MeV photon energy using a 1 μCi Co-60 source.
    •  DETAILED DESCRIPTION OF THE INVENTION
  • The foregoing and other aspects of the present invention will now be described in more detail with respect to other embodiments described herein. It should be appreciated that the invention can be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
  • The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the description of the embodiments of the invention and the appended claims, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. Also, as used herein, “and/or” refers to and encompasses any and all possible combinations of one or more of the associated listed items. Furthermore, the term “about,” as used herein when referring to a measurable value such as an amount of a compound, dose, time, temperature, and the like, is meant to encompass variations of 20 percent, 10 percent, 5 percent, 1 percent, 0.5 percent, or even 0.1 percent of the specified amount. Unless otherwise defined, all terms, including technical and scientific terms used in the description, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
  • The radiation shielding structure comprises calcium silicate (wollastonite), magnesium oxide and an acid phosphate. In one embodiment, the composition comprises about 15 to 40 percent by weight calcium silicate, about 10 to 35 percent by weight magnesium oxide and about 25 to 45 percent by weight acid phosphate. Such a composition optionally may include kaolin or fly ash at a 0.1 to 40 percent by weight level.
  • In another embodiment the radiation shielding structure comprises magnesium or calcium oxide, an acid phosphate and fly ash. In one embodiment, the structure comprises 15 to 40 percent by weight calcined magnesium or calcium oxide, 25 to 55 percent by weight acid phosphate and 20 to 40 percent by weight fly ash.
  • In another embodiment, the radiation shielding structure comprises a magnesium or calcium oxide, an acid phosphate and kaolin. In one embodiment, the structure comprises 15 to 40 percent by weight calcined magnesium or calcium oxide, 20 to 55 percent by weight acid phosphate and 5 to 25 percent by weight kaolin
  • Exemplary acid phosphates include monopotassium phosphate, magnesium phosphate, sodium phosphate, aluminum phosphate, ammonium phosphate, iron phosphate, zinc phosphate, and combinations thereof. In the embodiments above, the acid phosphate may be monopotassium phosphate.
  • Suitable additives may be mixed with the radiation shielding structure composition and typically the amounts added may be from about 0.1 to about 30 percent by weight. Exemplary additives include flame retardants, vermiculite, perlite, fibers, emulsifiers, deflocculates, sequestrates, granular additives, coarse aggregates such as stone and sand, chemical additives such as boric acid, accelerators (e.g., Accelguard available from The Euclid Chemical Company, Cleveland, Ohio) colorants and pigments, fillers, aggregates, borax, silica materials, iron oxides, bonding adhesives (e.g., Eucopoxy Resin and Eucoweld available from The Euclid Chemical Company, Cleveland, Ohio, Flexcon, and Con-bond) plasticizers, hardeners (e.g., Euco Diamond Hard available from The Euclid Chemical Company, Cleveland, Ohio), patching polymers (e.g., Eucorapid patch available from The Euclid Chemical Company, Cleveland, Ohio), micro silica fume (e.g., Eucoshot available from The Euclid Chemical Company, Cleveland, Ohio), setting retarders, surface softeners, and kaolins, curing compounds (e.g., Brownstone CS), water reducers (e.g., Accelguard, Eucon AC), and air entrainers (e.g., AEA and Air Mix).
  • Alternatively, neutron absorbers also may be added to the radiation shielding structure. Exemplary neutron absorbers include heavy metals and heavy metal compounds such as boron, B2O3, HfO3, Gd2O3, iron oxides, lead, and the like.
  • Alternatively, various reinforcement may be included in the composition or the composition may be applied to the reinforcement. Exemplary reinforcement includes steel (e.g. rebar), other metals (e.g., lead) carbon, glass, stone, basalt, and the like in fiber, particulate and/or fabric/mat form.
  • The radiation shielding structure composition can be mixed as a slurry and sprayed on an existing surface or substrate to improve the attenuation coefficient of that surface or the slurry can be sprayed, extruded, molded, and the like into a predetermined shape. Suitable structures include shielding for nuclear power plants, particle accelerators, research reactors, x-ray equipment, radiation equipment, and the like. Other structures include transport and storage vessels for containing waste capable of emitting harmful radiation such as described in U.S. Ser. No. 12/572,812, filed Oct. 2, 2009, the disclosure of which is incorporated herein by reference in its entirety.
  • The following examples are merely illustrative of the invention, and are not limiting thereon.
    • EXAMPLES
  • Examples 1-6 were formulated as follows:
    • Example 1
  • Magnesium Oxide 23%
    Monopotassium Phosphate 23%
    Fly Ash 21%
    Sand 33%

    The sample tested had a thickness of 0.50 inches.
    • Example 2
  • Magnesium Oxide 20%
    Monopotassium Phosphate 23%
    Calcium Silicate 24%
    Sand 33%

    The sample tested had a thickness of 1.25 inches.
    • Example 3
  • Example 1 was repeated with salt water. The sample tested had a thickness of 2.00 inches.
    • Example 4
  • Magnesium Oxide 23%
    Monopotassium Phosphate 23%
    Fly Ash 11%
    Kaolin 10%
    Sand 33%

    The sample tested had a thickness of 0.75 inches.
    • Example 5
  • Magnesium Oxide 30%
    Monopotassium Phosphate 34%
    Calcium Silicate 36%

    The sample tested had a thickness of 0.50 inches.
    • Example 6
  • Magnesium Oxide 30%
    Monopotassium Phosphate 31%
    Fly Ash 28%
    Sodium Bicarbonate 10%

    The sample tested had a thickness of 1.00 inches.
    • Example 7
  • Example 1 was repeated and the sample tested had a thickness of 1.00 inches. The testing was conducted using a method for measuring attenuation coefficients developed by North Carolina State University.
  • As can be seen from FIGS. 1 and 2, the formulations for Examples 1-6 have significantly improved attenuation coefficients as compared to ordinary concrete.
    • Example 8
  • A formulation as follows was prepared.
  •
    Magnesium Oxide 34%
    Monopotassium Phosphate 31%
    Fly Ash 17%
    Kaolin 15%
    • Example 9
  • Magnesium Oxide 34%
    Monopotassium Phosphate 31%
    Fly Ash 17%
    Kaolin 15%
    Sand 30%
  • Having thus described certain embodiments of the present invention, it is to be understood that the invention defined by the appended claims is not to be limited by particular details set forth in the above description as many apparent variations thereof are possible without departing from the spirit or scope thereof as hereinafter claimed.

Claims (5)

What is claimed is:
1. A radiation shielding structure composition comprising 10 to 40 percent by weight calcium silicate, 10 to 35 percent by weight magnesium oxide, and 15 to 45 percent by weight acid phosphate and having an improved attenuation coefficient as compared to ordinary concrete based on photon energies of 0.662 MeV (5 μCi Cs-137 source) and 1.173 MeV (1 μCi Co-60 source).
2. The radiation shielding structure composition of claim 1, wherein the acid phosphate is monopotassium phosphate.
3. The radiation shielding structure composition of claim 1, further comprising fly ash or kaolin or both.
4. A radiation shielding structure comprising the radiation shielding structure composition of claim 1 sprayed onto a substrate or formed into predetermined structure.
5. A method of shielding a structure or substrate from radiation, the method comprising applying a composition comprising 10 to 40 percent by weight calcium silicate, 10 to 35 percent by weight magnesium oxide, and 15 to 45 percent by weight acid phosphate to the structure or substrate.
US13/715,058 2008-10-06 2012-12-14 Radiation shielding structure composition Abandoned US20140061542A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/715,058 US20140061542A1 (en) 2008-10-06 2012-12-14 Radiation shielding structure composition

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10299708P 2008-10-06 2008-10-06
US12/572,795 US20100090168A1 (en) 2008-10-06 2009-10-02 Radiation shielding structure composition
US13/715,058 US20140061542A1 (en) 2008-10-06 2012-12-14 Radiation shielding structure composition

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US12/572,795 Continuation US20100090168A1 (en) 2008-10-06 2009-10-02 Radiation shielding structure composition

Publications (1)

Publication Number Publication Date
US20140061542A1 true US20140061542A1 (en) 2014-03-06

Family

ID=42097727

Family Applications (3)

Application Number Title Priority Date Filing Date
US12/572,812 Expired - Fee Related US8409346B2 (en) 2008-10-06 2009-10-02 Waste storage vessels and compositions therefor
US12/572,795 Abandoned US20100090168A1 (en) 2008-10-06 2009-10-02 Radiation shielding structure composition
US13/715,058 Abandoned US20140061542A1 (en) 2008-10-06 2012-12-14 Radiation shielding structure composition

Family Applications Before (2)

Application Number Title Priority Date Filing Date
US12/572,812 Expired - Fee Related US8409346B2 (en) 2008-10-06 2009-10-02 Waste storage vessels and compositions therefor
US12/572,795 Abandoned US20100090168A1 (en) 2008-10-06 2009-10-02 Radiation shielding structure composition

Country Status (9)

Country Link
US (3) US8409346B2 (en)
EP (2) EP2345042A4 (en)
JP (2) JP2012504773A (en)
KR (2) KR20110084416A (en)
CN (2) CN102246245A (en)
BR (2) BRPI0920813A2 (en)
CA (2) CA2742259A1 (en)
TW (2) TW201019348A (en)
WO (2) WO2010042417A2 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070102672A1 (en) * 2004-12-06 2007-05-10 Hamilton Judd D Ceramic radiation shielding material and method of preparation
US8409346B2 (en) * 2008-10-06 2013-04-02 Grancrete, Inc. Waste storage vessels and compositions therefor
CN102276207B (en) * 2011-06-28 2013-05-08 中国核工业华兴建设有限公司 Ferrosilicon sacrificial concrete
JP2013061287A (en) * 2011-09-14 2013-04-04 Kawahara Technical Research Inc Method of producing paste, and paste
JP5248702B2 (en) * 2011-09-14 2013-07-31 株式会社カワハラ技研 Life support equipment
JP5285173B2 (en) * 2011-09-14 2013-09-11 株式会社カワハラ技研 Radiation protection suit and space suit
JP2013137288A (en) * 2011-11-30 2013-07-11 Masahiro Yoshimura Airtight shielding stone powder container for storing radioactive waste soil
US20150041723A1 (en) * 2012-02-27 2015-02-12 The Regents Of The University Of California Chemically bonded ceramics based on boron and lead
KR101319256B1 (en) * 2012-03-05 2013-10-17 주식회사 경동나비엔 Gas-air mixer for burner
WO2014024542A1 (en) 2012-08-10 2014-02-13 加藤 大悟 Method for treating radioactive waste
CN102945687A (en) * 2012-08-21 2013-02-27 曾小荣 Ionization ray shielding protection plate and manufacture method thereof
JP6212684B2 (en) * 2013-03-22 2017-10-18 富士化学株式会社 Criticality prevention coating material, criticality prevention coating layer, and method for forming the same
JP2015152464A (en) * 2014-02-17 2015-08-24 積水化学工業株式会社 Radiation shield body and radiation shield structure
JP2015152463A (en) * 2014-02-17 2015-08-24 積水化学工業株式会社 Radiation shield body and radiation shield structure
CN104150859A (en) * 2014-08-06 2014-11-19 西南科技大学 Magnesium phosphate cement-based Gamma ray quick shielding material and preparation method thereof
JP2016130744A (en) * 2016-04-20 2016-07-21 株式会社東芝 Covering apparatus of thermal neutron absorption film, method thereof and collection method of core meltdown matter
RU2648253C1 (en) * 2016-10-31 2018-03-23 Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Сибирский Государственный Университет Водного Транспорта" (Фгбоу Во "Сгувт") Electrically conducting composition for protection against technogenic radiation
WO2018183406A1 (en) * 2017-03-28 2018-10-04 Abboud Robert G Changing density particles having a neutron absorbent and a thermal conductor
KR101959025B1 (en) * 2018-07-03 2019-07-04 한국원자력연구원 Composition or the textile sheet containing the same for mitigating cellular or tissue damage by radiation
TR201814099A2 (en) * 2018-09-27 2018-11-21 Elopar Elektrik Ve Otomotiv Parcalari Sanayi Ve Ticaret Anonim Sirketi A RADIATION SHIELD
CN114436619B (en) * 2020-11-03 2023-09-01 南京航空航天大学 Magnesium phosphate-based neutron shielding cementing material with high boron carbide content

Family Cites Families (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879209A (en) * 1971-12-01 1975-04-22 Republic Steel Corp Process for preparing fast-setting aggregate compositions and products of low porosity produced therewith
US3960580A (en) 1974-11-21 1976-06-01 W. R. Grace & Co. Magnesium phosphate concrete compositions
US4175005A (en) * 1975-12-06 1979-11-20 Harstead Gunnar A Component nuclear containment structure
US4257912A (en) * 1978-06-12 1981-03-24 Westinghouse Electric Corp. Concrete encapsulation for spent nuclear fuel storage
US4326918A (en) * 1980-03-13 1982-04-27 Electric Power Research Institute, Inc. Storage assembly for spent nuclear fuel
US4355060A (en) 1981-08-13 1982-10-19 Cornwell Charles E High temperature cementitious coatings with improved corrosion resistance and methods of application
US4504555A (en) * 1982-09-07 1985-03-12 Masonite Corporation Composition and process for forming inorganic resins and resulting product
US4541870A (en) 1984-08-03 1985-09-17 Barrett Jr Dave D Insulating cementitious mixture and method of use
SU1296544A1 (en) * 1985-10-04 1987-03-15 Специализированная Проектно-Конструкторская Организация По Наладке Технологических Процессов Производства И Оказанию Помощи Предприятиям "Оргтехстром" Raw mixture for producing fire-proof reflecting coating
US5002610A (en) 1985-12-12 1991-03-26 Rhone-Poulenc Basic Chemicals Co. Process for making reinforced magnesium phosphate fast-setting cements
JPS63115099A (en) * 1986-10-31 1988-05-19 株式会社東芝 Method of processing radioactive waste
GB2200107B (en) * 1987-01-23 1990-06-20 T & N Materials Res Ltd Manufacture of sheet-form material from refractory powder.
US4842649A (en) * 1987-10-02 1989-06-27 Pyrament, Inc. Cement composition curable at low temperatures
US5080022A (en) * 1987-10-23 1992-01-14 Aerex International Corporation Composite material and method
JPH0631871B2 (en) * 1988-03-03 1994-04-27 秩父コンクリート工業株式会社 Hazardous material processing container
US4956321A (en) * 1988-06-16 1990-09-11 Armstrong World Industries, Inc. Surface pacified wollastonite
US5114617A (en) 1989-05-22 1992-05-19 Advanced Concrete Technology, Inc. High strength structural perlite concrete
JPH0782112B2 (en) * 1990-06-12 1995-09-06 秩父小野田株式会社 Radioactive waste treatment container
US5100586A (en) 1990-07-20 1992-03-31 E. Khashoggi Industries Cementitious hazardous waste containers and their method of manufacture
US5311945A (en) * 1992-10-22 1994-05-17 Shell Oil Company Drilling and cementing with phosphate
US5402455A (en) * 1994-01-06 1995-03-28 Westinghouse Electric Corporation Waste containment composite
US5494708A (en) * 1994-06-17 1996-02-27 Blue Oak Materials Limited Partnership Method and apparatus for mixing, spraying and placing cementitious materials
US5626665A (en) * 1994-11-04 1997-05-06 Ash Grove Cement Company Cementitious systems and novel methods of making the same
US5645518A (en) * 1995-01-31 1997-07-08 The University Of Chicago Method for stabilizing low-level mixed wastes at room temperature
FR2742142B1 (en) * 1995-12-08 1998-01-16 Rhone Poulenc Chimie NOVEL BINDING PHASE FOR PHOSPHOMAGNETIC CEMENTS AND THEIR USE FOR THE PREPARATION OF MORTARS
JPH09176496A (en) * 1995-12-27 1997-07-08 Nippon Chem Ind Co Ltd Neutron shielding material
US6204214B1 (en) * 1996-03-18 2001-03-20 University Of Chicago Pumpable/injectable phosphate-bonded ceramics
US5830815A (en) * 1996-03-18 1998-11-03 The University Of Chicago Method of waste stabilization via chemically bonded phosphate ceramics
US5846894A (en) * 1996-03-18 1998-12-08 The University Of Chicago Phosphate bonded structural products from high volume wastes
US6136088A (en) 1997-10-09 2000-10-24 Mbt Holding Ag Rapid setting, high early strength binders
US6790815B1 (en) * 1998-07-10 2004-09-14 Procter & Gamble Company Amine reaction compounds comprising one or more active ingredient
US6308771B1 (en) * 1998-10-29 2001-10-30 Advanced Thermal Solutions, Inc. High performance fan tail heat exchanger
JP2002531368A (en) * 1998-12-08 2002-09-24 マックナルティ、ウイリアム、ジェイ．ジュニア Inorganic cementitious substances
US6561269B1 (en) 1999-04-30 2003-05-13 The Regents Of The University Of California Canister, sealing method and composition for sealing a borehole
US6133498A (en) 1999-05-05 2000-10-17 The United States Of America As Represented By The United States Department Of Energy Method for producing chemically bonded phosphate ceramics and for stabilizing contaminants encapsulated therein utilizing reducing agents
US6153809A (en) 1999-05-05 2000-11-28 The United States Of America As Represented By The United States Department Of Energy Polymer coating for immobilizing soluble ions in a phosphate ceramic product
US6290769B1 (en) 1999-06-22 2001-09-18 Siplast, Inc. Lightweight insulating concrete and method for using same
US6458423B1 (en) * 1999-08-03 2002-10-01 David M. Goodson Sprayable phosphate cementitious coatings and a method and apparatus for the production thereof
US20020009622A1 (en) * 1999-08-03 2002-01-24 Goodson David M. Sprayable phosphate cementitious coatings and a method and apparatus for the production thereof
US6475275B1 (en) * 1999-10-21 2002-11-05 Isolatek International Cement composition
CN1419523B (en) 2000-01-27 2010-04-21 泰西可控股有限公司 Magnesium cements
US6375935B1 (en) * 2000-04-28 2002-04-23 Brent R. Constantz Calcium phosphate cements prepared from silicate solutions
FR2809724B1 (en) 2000-06-05 2003-05-09 Rhodia Chimie Sa NEW PHOSPHOMAGNESIAN HYDRAULIC BINDER, AND MORTAR OBTAINED FROM THIS BINDER
US20040194657A1 (en) * 2000-06-22 2004-10-07 Thomas Lally Fire-retardant coating, method for producing fire-retardant building materials
US7045476B1 (en) 2000-06-22 2006-05-16 Thomas Joseph Lally Aerated refractory, method for producing high-temperature structural members
US7429290B2 (en) 2000-06-22 2008-09-30 Thomas Joseph Lally Fire-retardant coating, method for producing fire-retardant building materials
US6518212B1 (en) 2000-09-18 2003-02-11 The University Of Chicago Chemically bonded phospho-silicate ceramics
US6498119B2 (en) * 2000-12-29 2002-12-24 University Of Chicago Chemically bonded phosphate ceramics of trivalent oxides of iron and manganese
JP4562929B2 (en) * 2001-02-14 2010-10-13 独立行政法人農業・食品産業技術総合研究機構 Cement composition
US20020165082A1 (en) * 2001-02-23 2002-11-07 Dileep Singh Radiation shielding phosphate bonded ceramics using enriched isotopic boron compounds
JP2004522688A (en) 2001-08-10 2004-07-29 セラテック，インコーポレイテッド Composite materials and methods of making and using the composite materials
FI115046B (en) * 2001-11-01 2005-02-28 Kautar Oy Hydraulic solidifying binder mixture and process for its preparation
US6776837B2 (en) 2001-11-30 2004-08-17 The University Of Chicago Formation of chemically bonded ceramics with magnesium dihydrogen phosphate binder
US6790518B2 (en) 2001-12-19 2004-09-14 Lawrence Technological University Ductile hybrid structural fabric
RU2307411C2 (en) 2003-02-18 2007-09-27 Те Юниверсити Оф Чикаго Method for stabilizing uranium- and plutonium-containing materials in ceramicrite and crystalline radioactive material
WO2005013923A1 (en) * 2003-08-08 2005-02-17 Dentsply International Inc. Method and product for phosphosilicate slurry for use in dentistry and related bone cements
US20050160944A1 (en) 2004-01-23 2005-07-28 The University Of Chicago Permafrost ceramicrete
US7288148B2 (en) 2004-02-13 2007-10-30 Cemex, Inc. Rapid hardening hydraulic cement from subbituminous fly ash and products thereof
CA2462546A1 (en) 2004-03-30 2005-09-30 Michael J. Mabey Lightweight "mineral foam" composite materials and methods of making and using such composite materials
US7250119B2 (en) * 2004-05-10 2007-07-31 Dasharatham Sayala Composite materials and techniques for neutron and gamma radiation shielding
US7204880B1 (en) 2004-05-21 2007-04-17 Turner Terry A Rapid setting cement
US7160383B2 (en) * 2004-06-15 2007-01-09 Uchicago Argonne, Llc Composition and application of novel sprayable phosphate cement (grancrete) that bonds to styrofoam
DE102004035597B4 (en) * 2004-07-22 2006-08-10 Framatome Anp Gmbh Neutron-absorbing composition production, used during handling, transport and storage of nuclear materials, comprises preparing inorganic binder and adding neutron-absorbing compound particles
US7438755B2 (en) * 2004-09-03 2008-10-21 Uchicago Argonne, Llc Chemically bonded phosphate ceramic sealant formulations for oil field applications
US7449131B2 (en) * 2004-10-06 2008-11-11 Terry Industries, Inc. Techniques and compositions for shielding radioactive energy
US20070102672A1 (en) * 2004-12-06 2007-05-10 Hamilton Judd D Ceramic radiation shielding material and method of preparation
US7737319B2 (en) 2005-04-29 2010-06-15 Llyon Technologies, Llc Treating radioactive materials
CN1959858A (en) * 2005-11-03 2007-05-09 张波 Environmental protective broad spectrum, multi purpose, radiation-proof material
US7699928B2 (en) * 2006-07-14 2010-04-20 Grancrete, Inc. Sprayable and pumpable phosphate cement
JP4532447B2 (en) * 2006-08-02 2010-08-25 株式会社間組 Neutron shielding concrete
US8409346B2 (en) * 2008-10-06 2013-04-02 Grancrete, Inc. Waste storage vessels and compositions therefor
US8273172B2 (en) * 2008-10-07 2012-09-25 Grancrete, Inc. Heat resistant phosphate cement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
English machine translation of Zhang, CN 1959858A (05-2007) *

Also Published As

Publication number Publication date
EP2345042A4 (en) 2012-06-27
EP2345043A2 (en) 2011-07-20
JP2012504774A (en) 2012-02-23
US20100089292A1 (en) 2010-04-15
EP2345043A4 (en) 2012-06-20
JP2012504773A (en) 2012-02-23
EP2345042A2 (en) 2011-07-20
BRPI0920603A2 (en) 2015-12-22
WO2010042417A2 (en) 2010-04-15
CN102246244A (en) 2011-11-16
KR20110084417A (en) 2011-07-22
TW201019348A (en) 2010-05-16
WO2010042416A2 (en) 2010-04-15
US20100090168A1 (en) 2010-04-15
US8409346B2 (en) 2013-04-02
CN102246245A (en) 2011-11-16
CA2742305A1 (en) 2010-04-15
TW201019347A (en) 2010-05-16
CA2742259A1 (en) 2010-04-15
KR20110084416A (en) 2011-07-22
BRPI0920813A2 (en) 2017-07-11
WO2010042417A3 (en) 2010-07-08
WO2010042416A3 (en) 2010-07-08

Similar Documents

Publication Publication Date Title
US20140061542A1 (en) Radiation shielding structure composition
Gökçe et al. Gamma-ray attenuation coefficients and transmission thickness of high consistency heavyweight concrete containing mineral admixture
Dong et al. Highly cost-effective shielding composite made from vanadium slag and boron-rich slag and its properties
Hatungimana et al. Compressive strength, water absorption, water sorptivity and surface radon exhalation rate of silica fume and fly ash based mortar
Binici et al. Mechanical and radioactivity shielding performances of mortars made with colemanite, barite, ground basaltic pumice and ground blast furnace slag
Eid et al. Implementation of waste silicate glass into composition of ordinary cement for radiation shielding applications
Yao et al. Investigation of gamma ray shielding efficiency and mechanical performances of concrete shields containing bismuth oxide as an environmentally friendly additive
Esen et al. An investigation of X-ray and radio isotope energy absorption of heavyweight concretes containing barite
CN112037956A (en) Shielding material for shielding radioactive ray and preparation method thereof
JP5729995B2 (en) Neutron absorber
Wagh et al. Durability and shielding performance of borated Ceramicrete coatings in beta and gamma radiation fields
Masoud et al. Valorization of hazardous chrysotile by H3BO3 incorporation to produce an innovative eco-friendly radiation shielding concrete: Implications on physico-mechanical, hydration, microstructural, and shielding properties
Mahmoud et al. The influence of heavy metallic wastes on the physical properties and gamma-ray shielding performance of ordinary concrete: Experimental evaluations
Sidhu et al. On the use of flyash-lime-gypsum (FaLG) bricks in the storage facilities for low level nuclear waste
JP2014089127A (en) Radiation shield wall
Ashoor et al. Appraisal of new density coefficient on integrated-nanoparticles concrete in nuclear protection
JP2007303953A (en) Concrete for radiation shielding
Salisu et al. Determination of shielding effectiveness of concretes with different aggregate and cement composition
Elamin et al. The effect of replacements 30% for each concrete component by iron filling in concrete on attenuation properties
El-Khayatt et al. Improvement of shielding properties of cement paste by slag addition from local steel industry
Sayyed et al. Novel Shielding Mortars for Radiation Source Transportation and Storage. Sustainability 2022, 14, 1248
US20180009711A1 (en) Compositions of low activation concrete and use thereof
US20230154637A1 (en) Radiation shield unit, method of manufacturing radiation shield unit, and radiation shield structure
Moneghan Characterization of a Fibrous Magnesium Phosphate Concrete for Nuclear Waste Storage Applications
Simon et al. Evaluation of radiation shielding integrity of fabricated concrete with some selected aggregate sizes

Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION

AS Assignment

Owner name: MAG PHOS, INC., NORTH CAROLINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GRANCRETE, INC.;REEL/FRAME:045223/0440

Effective date: 20180309