CN107500677A - A kind of gamma ray shielding composite and preparation method thereof - Google Patents

A kind of gamma ray shielding composite and preparation method thereof Download PDF

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Publication number
CN107500677A
CN107500677A CN201710903586.6A CN201710903586A CN107500677A CN 107500677 A CN107500677 A CN 107500677A CN 201710903586 A CN201710903586 A CN 201710903586A CN 107500677 A CN107500677 A CN 107500677A
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China
Prior art keywords
parts
ray shielding
gamma ray
slag
shielding composite
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Inventor
史月龙
曾宋君
吴英亮
刘文斌
吴坤林
汤静
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Nanjing Xiancaotang Biological Technology Co Ltd
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Nanjing Xiancaotang Biological Technology Co Ltd
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Priority to CN201710903586.6A priority Critical patent/CN107500677A/en
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    • 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
    • C04B28/02—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 hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • 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
    • C04B2111/00017—Aspects relating to the protection of the environment
    • 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
    • C04B2111/00025—Aspects relating to the protection of the health, e.g. materials containing special additives to afford skin protection
    • 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
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

A kind of gamma ray shielding composite and preparation method thereof, in parts by weight, composition of raw materials include following raw material：150 ~ 190 parts of water, 1100 ~ 1700 parts of coarse aggregate, 740 ~ 850 parts of fine aggregate, 350 ~ 640 parts of binder materials, 2.1 ~ 8.0 parts of water reducer, 30 ~ 75 parts of steel fibre, 50 ~ 100 parts of scrap iron powder；Wherein, described coarse aggregate is slag, and described fine aggregate is the mixture of dry rectificating oil shale slag and flyash, and described binder materials is the mixture of cement and dry rectificating oil shale slag.The present invention, not only to industrial residue recycling important in inhibiting, it is increasingly exhausted can also to solve the problems, such as that natural aggregate faces using slag, dry rectificating oil shale slag, flyash and scrap iron powder these solid waste as raw material.

Description

A kind of gamma ray shielding composite and preparation method thereof
Technical field
The present invention relates to a kind of gamma ray shielding composite and preparation method thereof, belong to radiation protection technique field.
Background technology
The mankind explore, to improve itself to big to the energy always in order to try to achieve more survival and development spaces Natural controling power.19th century, mid-term started, and the first time energy for occurring changing from original firewood carbon to fossil energy is removed from office Life；It is also increasing to the demand of the energy with production development, at this moment it is found that fossil energy is increasingly exhausted, and Environmental pollution is also increasingly severe as caused by fossil energy, people start to make great efforts to seek it is new clean, be environmentally friendly, efficient energy Source.The scientist in the 30's of 20th century realizes a series of artificial nuclear reaction, and they have found during nuclear reaction, The energy as caused by nuclear fusion and nuclear fission is huge, and huge energy is contained in atomic nucleus, with other novel energies Compare, nuclear energy possess efficiently, cleaning etc. unrivaled superiority, the development in the future source of energy world, it will exist using nuclear energy as It is main, the general layout of the various energy resources joint development such as solar energy, wind energy, underground heat, waterpower, biological energy source.
The general rood of Germanization scholar's carat（M. H. Klaproth）A kind of mineral were analyzed in 1789（Confirm this later Kind mineral are pitch blende）When be found that this material of uranium, and urania has been made（UO2）；And first obtained metallic uranium Scientist is Bi Ligaote（E. Peligot）, 1841 he laboratory first be made metallic uranium.French physician Bake Le Er（H. A. Becquerel）In the radioactive nature that 1986 are found that uranium, shortly after the radioactivity of uranium is found, write The physicist Madame Curie of name has found thorium（Th）, radium（Ra）, polonium（Po）Also there is radioactivity.By the unremitting spy of scientists Rope, it is found that nature has 4 radioactive series, i.e. thorium family, uranium series, actionuranium series and neptunium series, their parent is respectively232Th、238U、235U and237Np, wherein thorium family, uranium series, the stable product of actionuranium series are all lead, and the decay constant of neptunium series is bismuth（Bi）.
Nucleic is divided into two classes, i.e. stable nuclide and radionuclide.Radionuclide is spontaneously released ray and is transformed into Another nucleic, this process are referred to as radioactive decay.Radionuclide decay process can discharge three kinds of rays, i.e., alpha ray, β rays and gamma-rays.
α particles are helion, and it is made up of two protons and two neutrons, and without any electronics.Generally there is radiation The property and larger chemical element of atomic weight can then radiate α particles by alpha-decay, so as to become lighter element, until this yuan Untill element is stable.Alpha ray is the α particle fluxes that radioactive substance discharges, and it can be by a variety of radioactive substances（Such as radium）Transmitting Out.The radio isotope of release α particles will not constitute a threat in human external to the health of human body, but as release α The material of particle is once inhaled into or injected human body, then the alpha ray of these substance releases will directly destroy intracellular DNA, give people to bring fatal danger.
β rays are the electron streams of high-speed motion, when β decays occur for radiation material, its Beta-ray speed energy discharged Reach the 99% of the light velocity.β rays are more stronger than Alpha-ray penetration power, but through equally apart from when, damage caused by β rays is more It is small, and Beta-ray ionization is relatively weak.
Gamma-rays be by radio isotope such as60Co or137Caused by Cs, it is that atomic energy order transition is released when changing in quality The ray of releasing, it is a kind of High energy electromagnetic ripple.Gamma-ray penetration power is very strong, and dose comparison is uniform, therefore dangerous big.
It was recognized that the possibility damage of Radiation On Human body during using radiation and nuclear energy.Radiation and people's body phase Interaction can cause some distinctive biological effects, and the dose of radiation of absorption of human body determines the nature and extent of effect.It is heavy dose of Irradiation can cause substantial amounts of cellular damage or death, then cause the tissue of body, organ that lesion occurs, trigger a series of Body illness, or even cause body dead.Caused biological effect is mainly including two kinds after being irradiated for human body, i.e., certainty is imitated Should and stochastic effect.Deterministic effect refers in the case where irradiation exceedes dose threshold value the radiation of body can be caused to integrate Disease, cause and lesion is occurred than more sensitive organ such as skin, blood forming organ, sexual gland and eye lens to ionising radiation.Work as organism When being irradiated by heavy dose, body death is resulted even in.
Endangered although we have grasped caused by Radiation On Human body, all biologies all inevitably will on the earth Radiated, earth primordial radionuclide is all included in all materials.Radiation of the natural radiation line material to human body is shone Penetrate be mankind institute raying under normal circumstances main source, but with production and science and technology development, in nuclear industry Irradiation, the radiation of the irradiation of radioactive material confrontation practitioner, nuclear industry to the radioactive wastes of environmental emission in production process Property the irradiation of nucleic application, the irradiation in terms of medical diagnosis and therapy, precipitum, the home decoration material of nuclear weapon experiment it is for example big The irradiation of reason stone ceramic tile etc. increasingly attracts people's attention, therefore people start constantly to be visited in radiation protection field Rope.
Gamma-ray penetration capacity is very strong, therefore is primarily referred to as external exposure shielding for gamma-ray shielding, can Shielding gamma-ray material has a lot, common are concrete, lead, water, iron, lead glass, rare earth, tungsten-nickel alloy, macromolecule material Material and some high polymers such as material such as lead-boron polythene, boracic polypropylene, the material of high atomic number is usually contained, to gamma-rays Shield effectiveness it is good, therefore often using iron and lead etc. as shielding material.Lead has higher corrosion resistance, can resist air Oxidation and the corrosion of acid, and the fusing point of lead is relatively low（Fusing point is 327.4 DEG C）, fusing cast is easy, and gross weight is light, small volume, Therefore both at home and abroad all generally using lead as gamma-ray shielding material within a very long time.However, lead is as radiation shield The material covered has some drawbacks, and the hardness of lead is not high enough, structural strength is poor, non-refractory；And lead is just heavy metal-polluted in itself Dye source, heavy metal poisoning is easily caused in use, lead is considered a kind of poisonous material extensively in the world in recent years, The personal security for being engaged in radiation work can be threatened, therefore, be ground from preventing the angle of public hazards and environmental protection from proposing Study carefully the necessity and urgency of new gamma ray shielding material.
Wherein, when being built with the building of radiation source, it is necessary to which protection body is set.Concrete is the most widely used at present Ray protection material, it is mainly used in making the inside and outside shell of nuclear reactor and the curing process of nuke rubbish.The 5 of Central South University are high It is bright to be equal to that to have developed within 2008 density be 3000 kg/m3Anti-gamma-ray hematite, magnetite concrete；It is Egyptian Bashter I. I. et al. are prepared using limonite ore, hematite and crude boron stone can effectively shield gamma-rays and neutron Concrete.The heavy concrete that Creutz E. et al. are prepared using magnetic iron ore as aggregate, its mechanical property all meets will Ask.Makarious A. S. et al. have carried out systematic research to the radioresistance effect of ilmenite aggregate concrete, find as guarantor During sheath distance 50 cm of ＜, the gamma-rays of ilmenite concrete absorb it is more, during protective layer thickness 50 cm of ＞, common coagulation The attenuation degree of soil is bigger.Hong S. B. and Kang M. J. et al. researchs show, are mixed in concrete material Mg、Ti、3H、14C、55Fe and60Co etc. can improve concrete radiation protection ability, concrete radiation protection ability and folk prescription concrete Middle content of beary metal is closely related, therefore, it is necessary to improves concrete shield gamma-rays with the aggregate containing heavy metal element Sub- ray ability.Makarious A. S. et al. are shown by research, are 4.6 g/cm with density3Prepared by limonite mixes again Solidifying soil, to γ, X, neutron ray, low speed neutron ray attenuation effect than ilmenite, limonite loaded concrete and common Concrete is more superior.Mortazav S. M. J. et al. have found the gamma-rays of the concrete of admixture galena (PbS) heavy aggregate Shield effectiveness is more preferable than other heavy concretes.Chichester D. L. et al. have found to mix containing polyethylene and the common of bismuth Solidifying soil is relatively good neutron ray shielding material.Akkurt I. et al. have found to contain BaSO4Heavy metal concrete have very High gamma Rays attenuation coefficient.Kharita M. H. et al. fill carbon dust in bloodstone concrete, and research shows Concrete crushing strength 15% can be improved by filling 6% carbon dust, but can reduce the shield effectiveness of gamma-rays and neutron.Erdem M. etc. People prepares a kind of new gamma ray shielding material with leaded metallurgical solid waste material, the γ radiation shields available for building.
Concrete has shaping, handling ease as construction material, can size and dimension as needed poured Build, do not limited by shape；Structural and durability, the intensity of concrete are all higher；Concrete and other shielding materials Compare, have the advantages that cheap.In radiation shield concrete design, the larger natural crystal of some apparent densities：Weight is brilliant Stone, serpentine etc., by its excellent alpha ray shield performance, it is commonly used the coarse-fine aggregate as concrete.These are natural Ore has larger atomic number and higher apparent density by it, can effectively stop ray in concrete Penetrate.However, these natural crystals are non-renewable, with developing rapidly for nuclear power, come from the angle of sustainable development Say, it is significant to find alternative material.
The content of the invention
For above the deficiencies in the prior art, the present invention provides a kind of gamma ray shielding composite and preparation method thereof, Using slag, dry rectificating oil shale slag, flyash and scrap iron powder these solid waste as raw material, covering material is used as by the use of them Raw material and additive, the use of natural crystal and cement is substituted, reach the purpose of comprehensive utilization and the environmental protection of waste, and Meet requirement and the radiation proof requirement of concrete.
In order to achieve the above objects and other related objects, technical scheme provided by the invention is：A kind of gamma ray shielding is answered Condensation material, the composition of raw materials of the gamma ray shielding composite include the material of following parts by weight：
1100 ~ 1700 parts of coarse aggregate；
740 ~ 850 parts of fine aggregate；
350 ~ 640 parts of binder materials；
2.1 ~ 8.0 parts of water reducer；
30 ~ 75 parts of steel fibre；
50 ~ 100 parts of scrap iron powder；
150 ~ 190 parts of water；
Wherein, the coarse aggregate is slag, and the fine aggregate is the compound of dry rectificating oil shale slag and flyash, the gelling material Expect the compound for cement and dry rectificating oil shale slag.
Preferably technical scheme is：The slag contains the composition of following masses percentage：
SiO2 14 ~ 20%,
CaO 40~50%；
Tfe 13~20%；
Al2O3 3~8%；
MgO 5~10%；
The dry rectificating oil shale slag contains the composition of following masses percentage：
SiO2 20~30%；
CaO 50~67%；
Fe2O3 5~7%；
Al2O3 5~8%；
The flyash has the composition of following masses percentage：
SiO2 30~65%；
CaO 5~12%；
Fe2O31.5~6.7%；
Al2O3 26~40%。
Preferably technical scheme is：The particle diameter of the slag is more than or equal to 4.75mm.
Preferably technical scheme is：Described fine aggregate is after being mixed by dry rectificating oil shale slag and flyash, by ball milling The compound crossed afterwards obtained by 300 mesh sieves, the mass ratio of dry rectificating oil shale slag and flyash between the two are 1:3~5.
Preferably technical scheme is：The binder materials be by dry rectificating oil shale slag by ball milling and cross 100 mesh sieves after with The compound that cement mixing obtains, the mass ratio of cement and dry rectificating oil shale slag between the two are 1:0.2~0.4.
Preferably technical scheme is：Described water reducer is fatty acid series high efficiency water reducing agent, naphthalene sulfonate water reducer or poly- High Efficient Diswater.
Preferably technical scheme is：The cement is Portland cement.
Preferably technical scheme is：The fineness of the scrap iron powder is less than 50 μm.
In order to achieve the above objects and other related objects, technical scheme provided by the invention is：A kind of gamma ray shielding is answered The preparation method of condensation material, the composition of raw materials of the gamma ray shielding composite use claim 1 ~ 8 any claim Described composition of raw materials, preparation method comprise the following steps：
The first step：Binder materials, coarse aggregate, fine aggregate, steel fibre and scrap iron powder are added into concrete according to composition of raw materials to stir Mix in machine, 2 ~ 3min of mechanical agitation, compound is obtained after stirring；
Second step：Water reducer and water, 2 ~ 3min of mechanical agitation are added into the compound, mixture slurry is obtained after stirring Material, mixture paste injection mould is subjected to shaping of vibrating, the concrete for conserving to obtain is gamma ray shielding composite.
Because above-mentioned technical proposal is used, the present invention this have the advantage that compared with prior art：
The present invention is using slag, dry rectificating oil shale slag, flyash and scrap iron powder these solid waste as raw material, not only to Industry Waste Slag recycling important in inhibiting, it is increasingly exhausted can also to solve the problems, such as that natural aggregate faces.The anti-spoke being prepared The requirement that concrete bulk strength and durability degree meet to use is penetrated, good shield effectiveness is served to gamma-ray, and can be same When meet shielding to α, β ray and neutron ray.
Embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this implementation Content disclosed by example understands other advantages and effect of the present invention easily.
Embodiment 1 ~ 4：A kind of gamma ray shielding composite and preparation method thereof
A kind of gamma ray shielding composite, the composition of raw materials such as following table of the gamma ray shielding composite：
1st, the particle diameter of slag：Embodiment 1：4.75mm；Embodiment 2：4.85；Embodiment 3：5；Embodiment 4：4.97.
2nd, the fineness of scrap iron powder：Embodiment 1：40mm；Embodiment 2：50；Embodiment 3：45；Embodiment 4：47.
3rd, fine aggregate is the mixing obtained by 300 mesh sieves excessively after ball milling after being mixed by dry rectificating oil shale slag and flyash Close material.
4th, binder materials is the mixing for obtaining dry rectificating oil shale slag with cement mixing after ball milling and excessively 100 mesh sieves Material.
Embodiment 1 ~ 4 is prepared according to following steps：
（1）Binder materials, coarse aggregate, fine aggregate, steel fibre and scrap iron powder are added in concrete mixer according to proportioning, machine Tool stirs 3min, and compound is obtained after stirring；
（2）To step（1）Water reducer and water are proportionally added in the compound of middle gained, mechanical agitation 3min, is stirred After obtain mixture paste, mixture paste injection mould is subjected to shaping of vibrating, conserves and obtains concrete, i.e. gamma ray shielding Composite.
The physical property technical indicator of radiation shield concrete prepared by embodiment 1 ~ 4 is as shown in the table.
Upper table illustrates that the radiation shield concrete items physical prepared by embodiment 1 ~ 4 is functional, and homogeneity is high, With good service behaviour.
The linear attenuation coefficient of radiation shield concrete prepared by embodiment 1 ~ 4（cm-1）
Upper table illustrates that radiation shield concrete prepared by embodiment 1 ~ 4 is obvious to the gamma-ray linear attenuation index of varying strength It is better than external performance indications, there is good shielding property.
Dry rectificating oil shale slag both uses as fine aggregate in the present invention, is used again as binder materials.When as fine aggregate When, the hardness and freezing tolerance of concrete can be strengthened, and its permeability is reduced, so as to improve the performance of concrete.As For binder materials in use, the action effect as clay can be played, so as to reduce the addition of cement, clay pit is saved And caused environmental disruption in cement manufacturing expense and elimination clay pit development process.From flyash as thin in the present invention Aggregate uses, and can not only reduce cost, and can improve the workability of concrete, improve impermeability, air impermeability, sulfuric-resisting Salt performance and chemistry-resistant characteristic, the resistance to elevated temperatures for reducing the heat of hydration, improving concrete, the separation of mitigation particle and bleed show As, reduce the contraction of concrete and cracking and suppress corrosion of the stray electrical current to reinforcement in concrete.Steel is selected in the present invention Slag uses as coarse aggregate, and the particle diameter of slag is greater than 4.75mm, under the precondition that slag coarse aggregate meets stability, uses It substitutes the natural aggregate in concrete, although slag coarse aggregate self-strength is less than crushed stone aggregate intensity, due to slag Rough surface, hole is more, and the actual ratio of mud decreases so that the interfacial adhesion of formation is higher, is acted on when by external force When, slag coarse aggregate reduces with hydrolysis product of cement interfacial stress gradient, so as to improve concrete bulk strength.
Composite prepared by the present invention, its radiation proof function are mainly based upon the anti-radiation of aggregate and scrap iron powder Energy：Used aggregate includes slag, dry rectificating oil shale slag and flyash, containing a variety of metallic elements, then is individually added into useless Iron powder is matched somebody with somebody so that the radiation protection ability of concrete significantly increases.When radiation source radiates α, β, γ and neutron ray, first The high heavy metal element of the relative atomic mass that contains in aggregate can effectively attenuation ray spread speed so as to little by little Absorb radiation ray；Secondly, inside concrete also has more chemical combination combination water, including：Free water, the crystallization water, these moisture The absorption of slowing down and slow neutron for fast neutron has good effect, and will not produce Secondary radiation.It is meanwhile slag, dry After cement and water is added solid phase reaction occurs for the silicoaluminate evaporated in oil shale waste and flyash, makes heavy metals immobilization Without dissolution in the lattice of silicoaluminate, it is ensured that prepare environment amenable radiation shield concrete.
Embodiment 5：A kind of gamma ray shielding composite and preparation method thereof
A kind of gamma ray shielding composite, the composition of raw materials of the gamma ray shielding composite include the material of following parts by weight Material：
1700 parts of coarse aggregate；
740 parts of fine aggregate；
640 parts of binder materials；
4 parts of water reducer；
75 parts of steel fibre；
50 parts of scrap iron powder；
180 parts of water；
Wherein, the coarse aggregate is slag, and the fine aggregate is the compound of dry rectificating oil shale slag and flyash, the gelling material Expect the compound for cement and dry rectificating oil shale slag.
After testing, the slag contains the composition of following masses percentage：
SiO220%,
CaO 50%；
Tfe 20%；
Al2O3 3%；
MgO 7%；
After testing, the dry rectificating oil shale slag contains the composition of following masses percentage：
SiO2 30%；
CaO 60%；
Fe2O3 5%；
Al2O3 5 %；
After testing, the flyash has the composition of following masses percentage：
SiO2 63%；
CaO 5%；
Fe2O3 5%；
Al2O3 27%。
Preferred embodiment is：The particle diameter of the slag is 5.12mm.
Preferred embodiment is：Described fine aggregate is after being mixed by dry rectificating oil shale slag and flyash, by ball milling The compound crossed afterwards obtained by 300 mesh sieves, the mass ratio of dry rectificating oil shale slag and flyash between the two are 1:4.
Preferred embodiment is：The binder materials be by dry rectificating oil shale slag by ball milling and cross 100 mesh sieves after with The compound that cement mixing obtains, the mass ratio of cement and dry rectificating oil shale slag between the two are 1:0.3.
Preferred embodiment is：Described water reducer is fatty acid series high efficiency water reducing agent.
Preferred embodiment is：The cement is Portland cement.
Preferred embodiment is：The fineness of the scrap iron powder is 40 μm.
Preparation method comprises the following steps：
The first step：Binder materials, coarse aggregate, fine aggregate, steel fibre and scrap iron powder are added into concrete according to composition of raw materials to stir Mix in machine, mechanical agitation 2min, compound is obtained after stirring；
Second step：Water reducer and water, mechanical agitation 2min are added into the compound, mixture slurry is obtained after stirring Material, mixture paste injection mould is subjected to shaping of vibrating, the concrete for conserving to obtain is gamma ray shielding composite.
Embodiment 6：A kind of gamma ray shielding composite and preparation method thereof
A kind of gamma ray shielding composite, it is characterised in that：Under the composition of raw materials of the gamma ray shielding composite includes The material of row parts by weight：
1500 parts of coarse aggregate；
795 parts of fine aggregate；
550 parts of binder materials；
8.0 parts of water reducer；
55 parts of steel fibre；
73 parts of scrap iron powder；
159 parts of water；
Wherein, the coarse aggregate is slag, and the fine aggregate is the compound of dry rectificating oil shale slag and flyash, the gelling material Expect the compound for cement and dry rectificating oil shale slag.
After testing, the slag contains the composition of following masses percentage：
SiO2 14%,
CaO 52%；
Tfe 16%；
Al2O3 8%；
MgO 10%；
After testing, the dry rectificating oil shale slag contains the composition of following masses percentage：
SiO2 20%；
CaO 67%；
Fe2O3 7%；
Al2O3 6%；
After testing, the flyash has the composition of following masses percentage：
SiO2 41.3%；
CaO 12%；
Fe2O3 6.7%；
Al2O3 40%。
Preferred embodiment is：The particle diameter of the slag is 5.5mm.
Preferred embodiment is：Described fine aggregate is after being mixed by dry rectificating oil shale slag and flyash, by ball milling The compound crossed afterwards obtained by 300 mesh sieves, the mass ratio of dry rectificating oil shale slag and flyash between the two are 1: 5.
Preferred embodiment is：The binder materials be by dry rectificating oil shale slag by ball milling and cross 100 mesh sieves after with The compound that cement mixing obtains, the mass ratio of cement and dry rectificating oil shale slag between the two are 1:0.2.
Preferred embodiment is：Described water reducer is fatty acid series high efficiency water reducing agent, naphthalene sulfonate water reducer or poly- High Efficient Diswater.
Preferred embodiment is：The cement is Portland cement.
Preferred embodiment is：The fineness of the scrap iron powder is 45 μm.
Preparation method comprises the following steps：
The first step：Binder materials, coarse aggregate, fine aggregate, steel fibre and scrap iron powder are added into concrete according to composition of raw materials to stir Mix in machine, mechanical agitation 3min, compound is obtained after stirring；
Second step：Water reducer and water, mechanical agitation 2min are added into the compound, mixture slurry is obtained after stirring Material, mixture paste injection mould is subjected to shaping of vibrating, the concrete for conserving to obtain is gamma ray shielding composite.
As described above is only to explain the preferred embodiments of the invention, is not intended to tool to do any shape to the present invention Limitation in formula, therefore all have any modification or change for making the relevant present invention under identical spirit, it should all wrap Include the invention is intended to the category protected.

Claims (9)

  1. A kind of 1. gamma ray shielding composite, it is characterised in that：The composition of raw materials of the gamma ray shielding composite includes The material of following parts by weight：
    1100 ~ 1700 parts of coarse aggregate；
    740 ~ 850 parts of fine aggregate；
    350 ~ 640 parts of binder materials；
    2.1 ~ 8.0 parts of water reducer；
    30 ~ 75 parts of steel fibre；
    50 ~ 100 parts of scrap iron powder；
    150 ~ 190 parts of water；
    Wherein, the coarse aggregate is slag, and the fine aggregate is the compound of dry rectificating oil shale slag and flyash, the gelling material Expect the compound for cement and dry rectificating oil shale slag.
  2. 2. gamma ray shielding composite according to claim 1, it is characterised in that：The slag contains following masses hundred Divide the composition of ratio：
    SiO2 14 ~ 20%,
    CaO 40~50%；
    Tfe 13~20%；
    Al2O3 3~8%；
    MgO 5~10%；
    The dry rectificating oil shale slag contains the composition of following masses percentage：
    SiO2 20~30%；
    CaO 50~67%；
    Fe2O3 5~7%；
    Al2O3 5~8%；
    The flyash has the composition of following masses percentage：
    SiO2 30~65%；
    CaO 5~12%；
    Fe2O3 1.5~6.7%；
    Al2O3 26~40%。
  3. 3. gamma ray shielding composite according to claim 1, it is characterised in that：The particle diameter of the slag is more than or waited In 4.75mm.
  4. 4. gamma ray shielding composite according to claim 1, it is characterised in that：Described fine aggregate is by empyreumatic oil After shale slag and flyash mixing, the compound crossed after ball milling obtained by 300 mesh sieves, dry rectificating oil shale slag and flyash two Mass ratio between person is 1:3~5.
  5. 5. gamma ray shielding composite according to claim 1, it is characterised in that：The binder materials is by empyreumatic oil The compound that shale slag obtains by ball milling and after crossing 100 mesh sieves with cement mixing, cement and dry rectificating oil shale slag are between the two Mass ratio be 1:0.2~0.4.
  6. 6. gamma ray shielding composite according to claim 1, it is characterised in that：Described water reducer is fatty acid series High efficiency water reducing agent, naphthalene sulfonate water reducer or polycarboxylic acid series high efficiency water reducing agent.
  7. 7. gamma ray shielding composite according to claim 1, it is characterised in that：The cement is normal silicate water Mud.
  8. 8. gamma ray shielding composite according to claim 1, it is characterised in that：The fineness of the scrap iron powder is 50 μm Below.
  9. A kind of 9. preparation method of gamma ray shielding composite, it is characterised in that：The original of the gamma ray shielding composite Material formula is comprised the following steps using the composition of raw materials described in claim 1 ~ 8 any claim, preparation method：
    The first step：Binder materials, coarse aggregate, fine aggregate, steel fibre and scrap iron powder are added into concrete according to composition of raw materials to stir Mix in machine, 2 ~ 3min of mechanical agitation, compound is obtained after stirring；
    Second step：Water reducer and water, 2 ~ 3min of mechanical agitation are added into the compound, mixture slurry is obtained after stirring Material, mixture paste injection mould is subjected to shaping of vibrating, the concrete for conserving to obtain is gamma ray shielding composite.
CN201710903586.6A 2017-09-29 2017-09-29 A kind of gamma ray shielding composite and preparation method thereof Pending CN107500677A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108424107A (en) * 2018-04-03 2018-08-21 济南大学 A kind of radiation shield concrete
CN109343098A (en) * 2018-11-20 2019-02-15 成都麦特斯科技有限公司 A kind of radiation measurement assembly
CN109734375A (en) * 2019-01-30 2019-05-10 浙江广天构件股份有限公司 A kind of iron-aggregate concrete and preparation method for counter weight construction
CN114349436A (en) * 2022-02-16 2022-04-15 浙江龙游通衢建材有限公司 Composite radiation-proof concrete and preparation process thereof

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CN102219459A (en) * 2011-04-02 2011-10-19 武汉理工大学 Radiation shield concrete and preparation method thereof
CN105060780A (en) * 2015-07-25 2015-11-18 福州大学 Radiation-proof concrete taking nickel slag and lead-zinc mine tailing as raw materials and preparation method for radiation-proof concrete
US20160343460A1 (en) * 2015-05-22 2016-11-24 Arraela, S.L Mass preparation for the manufacture of technical concretes for shielding against radiation and method to obtain said preparation
CN106242431A (en) * 2016-08-17 2016-12-21 盐城市国泰混凝土有限公司 A kind of slag radioprotective concrete and preparation method thereof

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Publication number Priority date Publication date Assignee Title
CN101445348A (en) * 2008-12-30 2009-06-03 清华大学 Method for preparing sialite binding material with oil shale waste residues as main raw material
CN102219459A (en) * 2011-04-02 2011-10-19 武汉理工大学 Radiation shield concrete and preparation method thereof
US20160343460A1 (en) * 2015-05-22 2016-11-24 Arraela, S.L Mass preparation for the manufacture of technical concretes for shielding against radiation and method to obtain said preparation
CN105060780A (en) * 2015-07-25 2015-11-18 福州大学 Radiation-proof concrete taking nickel slag and lead-zinc mine tailing as raw materials and preparation method for radiation-proof concrete
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108424107A (en) * 2018-04-03 2018-08-21 济南大学 A kind of radiation shield concrete
CN109343098A (en) * 2018-11-20 2019-02-15 成都麦特斯科技有限公司 A kind of radiation measurement assembly
CN109734375A (en) * 2019-01-30 2019-05-10 浙江广天构件股份有限公司 A kind of iron-aggregate concrete and preparation method for counter weight construction
CN114349436A (en) * 2022-02-16 2022-04-15 浙江龙游通衢建材有限公司 Composite radiation-proof concrete and preparation process thereof

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