CN106495577A - The method that radiation shield concrete is prepared with discarded concrete and barite wet-grinding technology and relative device - Google Patents
The method that radiation shield concrete is prepared with discarded concrete and barite wet-grinding technology and relative device Download PDFInfo
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- CN106495577A CN106495577A CN201610853943.8A CN201610853943A CN106495577A CN 106495577 A CN106495577 A CN 106495577A CN 201610853943 A CN201610853943 A CN 201610853943A CN 106495577 A CN106495577 A CN 106495577A
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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
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
- C04B18/167—Recycled materials, i.e. waste materials reused in the production of the same materials
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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
- 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
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- 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
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- Ceramic Engineering (AREA)
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- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of method for preparing radiation shield concrete with discarded concrete and barite wet-grinding technology and relative device, discarded concrete is placed in disintegrating machine and is broken into fine aggregate and coarse aggregate；The coarse aggregate containing barite of fine aggregate and the fine aggregate containing barite of barite sand composition, coarse aggregate and barite rubble composition；Barium slag in the mineral admixture of baric slag is placed in disintegrating machine and crushes.Taking the fine aggregate containing barite, the mineral admixture of baric slag adds grinding aid, water to be placed in wet milk ball milling, obtains particle diameter slurry, ageing.Slurry is placed in blender, plus the coarse aggregate containing barite, cement, fluvial sand, water, water reducer stir to obtain mixture paste, and entering mould carries out molding of vibrating, and maintenance obtains final product radiation shield concrete.Present invention achieves the highly efficient regeneration of discarded concrete and barium slag is utilized, method is easy, easy to operate, with low cost.The radiation shield concrete of preparation has good anti-radiation, can be widely applied to the building such as nuclear power station, hospital.
Description
Technical field
The invention belongs to building material field, and in particular to one kind discarded concrete and barite wet-grinding technology and relative device prepare anti-
The method of radiation concrete.
Background technology
With flourishing for Building Trade in China, the demand of construction material is quickly increased.The concrete year of China needs
The amount of asking reaches 13-14 billion cubic meters, and wherein sandstone proportion is higher, is processed into sandstone heavy damage so cutting into a mountain in a large number and taking stone
Ecological environment.In building simultaneously, substantial amounts of discarded concrete occupies tract, causes environment and social problem.Therefore
Re-using discarded concrete becomes effective measures for solving discarded concrete.
Using barite larger for apparent density as gathering materials in radiation shield concrete, it is alpha ray shield excellent because of which
Energy.Barite can effectively stop that ray penetrates concrete by larger atomic and compared with high apparent density.
Barium slag is the residual solid in barium salt production, is industrial residue.With the development of China's chemical industry, the generation of barium slag
Amount increases year by year, and accumulative accumulating amount has surpassed ten million ton.As the repeatable utilization rate of barium slag is low, recycling high cost, present barium
The mode that stores up mainly is taken in the process of slag.This does not only take up a large amount of soils, also pollutes local environment.And with rainwater punching
Brush, Ba2+Subsoil water is easily penetrated into so that Ba in subsoil water2+Content overproof, to biological direct generation harmful effect.So, appropriate
Reason barium slag is conducted oneself well, realizes that the recycling of barium slag becomes present urgent problem.
Wet grinding is a kind of production method for object being added water and wearing into slurry.The slurry that wears into has Unit Weight energy consumption low, thin
The features such as degree is uniform, noise is little.Discharge capacity based on discarded concrete, barite and barium slag is big and the characteristics of more difficult utilization, knot
Close the technical characterstic of wet-grinding technology and relative device, it is expected to design a kind of preparation method of the radiation shield concrete that energy consumption is low, sharp useless rate is high.
Radiation shield concrete is mixed also known as radioactivity concrete, atomic energy concrete protection, shielding concrete or nuclear reactor
Solidifying soil, density are not less than 3300kg/m3.As the protective material of particle accelerator, the source device containing radiation and atomic reactor,
It can effectively shield x radiation x, and ray refers generally to the rays such as α, β, γ and neutron irradiation.The measure of radiation shield is main now
It is using high apparent density and high atomic number material, such as using the multilayer proofing of stereotype, steel plate and concrete.Lead although have compared with
Good anti-ray function, but belong to precious metal, use lead to cause in a large number relatively costly, and multilayer screen increased construction hardly possible
Degree.
In existing Patent data, 105084803 A of CN disclose a kind of life of the radioprotective mineral admixture of baric slag
Product method, is to be by component and constituent content：Levigate barium slag 50%-60%, flyash 20%-30%, ground blast furnace slag 10%-
15%, powder polycarboxylic acids water reducing agent 0.5%-1%, polypropylene fibre 0.1%-0.3%, silicon ash 5%-10%, thickening agent
The radioprotective mineral admixture that 0.5%-1% makes.Thickening agent is polyether-modified thickening agent.
Content of the invention
The purpose of the present invention is for above-mentioned present situation, it is desirable to provide a kind of preparation cost is low, is discarded concrete and barium slag
Recycling provide a new way, can shield well the rays such as α, β, γ and neutron irradiation use discarded concrete and
The method that barite wet-grinding technology and relative device prepares radiation shield concrete.
The implementation of the object of the invention is to prepare radiation shield concrete with discarded concrete and barite wet-grinding technology and relative device
Method, comprises the following steps that：
1) the barium slag in discarded concrete, the mineral admixture of baric slag is respectively placed in disintegrating machine and is crushed to average grain
The powder of footpath 2-25mm, discarded concrete of the particle diameter less than 4.8mm are fine aggregate, and the discarded concrete more than 4.8mm is thick bone
Material, takes the fine aggregate that parts by weight are 20-28 parts, and add weight number is the barite sand of 8-13 thereto, obtains containing barite
Fine aggregate；Parts by weight are taken for 23-37 part coarse aggregates, add weight number is 10-18 barite rubbles thereto, obtained brilliant containing weight
The coarse aggregate of rubble；
The component and its content of the mineral admixture of the baric slag is calculated as according to mass percent：Barium slag 50%-60%,
Flyash 20%-25%, breeze 6%-10%, silicon ash 5%-8%；
2) by step 1) in parts by weight 28-41 parts for obtaining fine aggregate and 18-22 part baric slags containing barite ore deposit
Polymer blends material is placed in wet milk, and add weight number 0.6-0.9 part grinding aids add water according to ratio of the water material weight than 0.5-0.7,
Ball milling 2 hours, is 600-800m to specific surface area2/ kg, the slurry of 2-25 μm of average diameter of particles are aged 1 hour；
The grinding aid is triethanolamine class grinding aid or polymeric polyols alcohols grinding aid；
3) by step 2) in the slurry that obtains be positioned over blender, plus step 1) in parts by weight 33-55 parts for obtaining contain
The coarse aggregate of weight crystalline substance rubble, 8-12 part cement, 15-21 part fluvial sand, 4-7 part water, 0.4-0.8 part water reducers, stir and must mix
Compound slurry；
The water reducer is polycarboxylate based water reducer or melamine system water reducer；
4) mixture paste injection mould is vibrated molding, maintenance obtains final product radiation shield concrete.
The present invention has advantages below：
1) in discarded concrete, coarse aggregate is reused, and reduces the exploitation of natural aggregate；
2) the useless rate of the profit of discarded concrete reaches more than 60%, realizes the purpose of environmental protection；
3) barium slag is reused, and prepares the high radiation shield concrete of shielding propertiess, can shield α, β, γ well
Deng ray and neutron irradiation, the environmental problem that barium slag muck product is brought is also solved；
4) the Unit Weight method of the slurry that wet-grinding technology and relative device is produced is easy, energy consumption is low, fineness is uniform, noise is little, low cost
Honest and clean, application prospect is extensive.
Radiation shield concrete prepared by the present invention can be widely applied to the building such as nuclear power station, hospital.
Specific embodiment
The present invention is placed in the barium slag in the mineral admixture of discarded concrete and baric slag in disintegrating machine and is broken into thick bone
Material and fine aggregate.Fine aggregate and barite sand composition containing barite fine aggregate, coarse aggregate and barite rubble composition containing weight
Spar coarse aggregate.The disintegrating machine is impact crusher, impact breaker or jaw crusher.The barite is II grade
Barite,《Barite anti-radiation concrete application technology specification》It is required that quality proportion shared by barium sulfate is in II grade of barite
90%-95%.
Barium slag in discarded concrete and mineral admixture is provided by Wuhan Waste Landfill Site；Barite rubble and
Barite sand is II grade of barite, commercially available material.Flyash, breeze in mineral admixture, silicon ash, commercially available material.
Taking the fine aggregate containing barite, the mineral admixture of baric slag adds grinding aid, water to be placed in wet milk ball milling, obtains particle diameter
2-25 μm of slurry, ageing.The cement is 42.5 portland cements, and commercially available material meets《Common portland cement》
(GB175-2007) standard is required.Grinding aid is commercially available material.
Slurry adds coarse aggregate containing barite, cement, fluvial sand, part water, water reducer to be placed in blender to stir, obtain mixture
Slurry.The blender is pears type, drum type or biconial blender.Water reducer is commercially available material.
Mixture paste enters mould carries out molding of vibrating, and maintenance obtains final product radiation shield concrete.Radioprotective is obtained through hydration and hardening
Concrete.
With specific embodiment in detail the present invention is described in detail below.
Embodiment 1：
1) the barium slag in discarded concrete, the mineral admixture of baric slag is respectively placed in disintegrating machine and is crushed to average grain
The powder of footpath 2-25mm, discarded concrete of the particle diameter less than 4.8mm are fine aggregate, and the discarded concrete more than 4.8mm is thick bone
Material, takes the fine aggregate that parts by weight are 20 parts, and add weight number is 8 barite sand thereto, obtains 28 parts thin containing barite
Aggregate；Parts by weight are taken for 23 parts of coarse aggregates, add weight number is 10 barite rubbles thereto, obtain 33 parts of rubbles of crystalline substance containing weight
Coarse aggregate；
2) by step 1) in the mineral of fine aggregate and 18 part baric slags of 28 parts of the parts by weight that obtain containing barite blend
Material is placed in wet milk, and 0.6 part of triethanolamine class grinding aid of add weight number adds water according to ratio of the water material weight than 0.5, ball milling
2 hours, be 600-800m to specific surface area2/ kg, the slurry of 2-25 μm of average diameter of particles are aged 1 hour；
3) by step 2) in the slurry that obtains be positioned over blender, plus step 1) in 33 parts of parts by weight obtaining brilliant containing weight
The coarse aggregate of rubble, 8 parts of cement, 15 parts of fluvial sand, 4 parts of water, 0.4 part of polycarboxylate based water reducer, stir to obtain mixture slurry
Material；
4) mixture paste injection mould is vibrated molding, maintenance obtains final product radiation shield concrete.
Embodiment 2：With embodiment 1, except for the difference that,
1) the barium slag in discarded concrete, the mineral admixture of baric slag is respectively placed in disintegrating machine and is crushed to average grain
The powder of footpath 2-25mm, discarded concrete of the particle diameter less than 4.8mm are fine aggregate, and the discarded concrete more than 4.8mm is thick bone
Material, takes the fine aggregate that parts by weight are 28 parts, and add weight number is 13 parts of barite sand thereto, obtains 41 parts and contains barite
Fine aggregate；Parts by weight are taken for 37 parts of coarse aggregates, add weight number is 18 barite rubbles thereto, obtain 55 parts of crystalline substances containing weight broken
The coarse aggregate of stone；
2) by step 1) in the mineral of fine aggregate and 22 part baric slags of 41 parts of the parts by weight that obtain containing barite blend
Material is placed in wet milk, and 0.9 part of triethanolamine class grinding aid of add weight number adds water according to ratio of the water material weight than 0.7, ball milling
2 hours；
3) by step 2) in the slurry that obtains be positioned over blender, plus step 1) in 55 parts of parts by weight obtaining brilliant containing weight
The coarse aggregate of rubble, 12 parts of cement, 21 parts of fluvial sand, 7 parts of water, 0.8 part of polycarboxylate based water reducer, stir to obtain mixture slurry
Material；
4) mixture paste injection mould is vibrated molding, maintenance obtains final product radiation shield concrete.
Embodiment 3：With embodiment 1, except for the difference that,
1) the barium slag in discarded concrete, the mineral admixture of baric slag is respectively placed in disintegrating machine and is crushed to average grain
The powder of footpath 2-25mm, discarded concrete of the particle diameter less than 4.8mm are fine aggregate, and the discarded concrete more than 4.8mm is thick bone
Material, takes the fine aggregate that parts by weight are 24 parts, and add weight number is 10 parts of barite sand thereto, obtains 34 parts and contains barite
Fine aggregate；Parts by weight are taken for 29 parts of coarse aggregates, add weight number is 14 barite rubbles thereto, obtain 43 parts of crystalline substances containing weight broken
The coarse aggregate of stone；
2) by step 1) in the mineral of fine aggregate and 20 part baric slags of 34 parts of the parts by weight that obtain containing barite blend
Material is placed in wet milk, and 0.8 part of triethanolamine class grinding aid of add weight number adds water according to ratio of the water material weight than 0.6, ball milling
2 hours；
3) by step 2) in the slurry that obtains be positioned over blender, plus step 1) in 43 parts of parts by weight obtaining brilliant containing weight
The coarse aggregate of rubble, 10 parts of cement, 18 parts of fluvial sand, 5 parts of water, 0.6 part of melamine system water reducer, stir to obtain mixture slurry
Material；
4) mixture paste injection mould is vibrated molding, maintenance obtains final product radiation shield concrete.
Embodiment 4：With embodiment 1, except for the difference that,
1) fine aggregate that parts by weight are 26 parts is taken, add weight number is 11 parts of barite sand thereto, obtains 37 parts and contain
The fine aggregate of barite；Parts by weight are taken for 32 parts of coarse aggregates, add weight number is 16 barite rubbles thereto, obtains 48 parts
The coarse aggregate of the rubble of crystalline substance containing weight；
2) by step 1) in the mineral of fine aggregate and 21 part baric slags of 37 parts of the parts by weight that obtain containing barite blend
Material is placed in wet milk, and 0.7 part of triethanolamine class grinding aid of add weight number adds water according to ratio of the water material weight than 0.6, ball milling
2 hours；
3) by step 2) in the slurry that obtains be positioned over blender, plus step 1) in 48 parts of parts by weight obtaining brilliant containing weight
The coarse aggregate of rubble, 9 parts of cement, 18 parts of fluvial sand, 6 parts of water, 0.7 part of melamine system water reducer, stir to obtain mixture slurry
Material；
4) mixture paste injection mould is vibrated molding, maintenance obtains final product radiation shield concrete.
Embodiment 5：With embodiment 1, except for the difference that,
1) fine aggregate that parts by weight are 22 parts is taken, add weight number is 9 parts of barite sand thereto, 31 parts are obtained containing weight
The fine aggregate of spar；Parts by weight are taken for 26 parts of coarse aggregates, add weight number is 13 barite rubbles thereto, obtains 39 parts and contains
The coarse aggregate of weight crystalline substance rubble；
2) by step 1) in the mineral of fine aggregate and 19 part baric slags of 31 parts of the parts by weight that obtain containing barite blend
Material is placed in wet milk, and 0.6 part of polymeric polyols alcohols grinding aid of add weight number adds water according to ratio of the water material weight than 0.5, ball
Mill 2 hours；
3) by step 2) in the slurry that obtains be positioned over blender, plus step 1) in 39 parts of parts by weight obtaining brilliant containing weight
The coarse aggregate of rubble, 11 parts of cement, 16 parts of fluvial sand, 6 parts of water, 0.5 part of polycarboxylate based water reducer, stir to obtain mixture slurry
Material；
4) mixture paste injection mould is vibrated molding, maintenance obtains final product radiation shield concrete.
Embodiment 6：With embodiment 1, except for the difference that,
1) fine aggregate that parts by weight are 27 parts is taken, add weight number is 12 parts of barite sand thereto, obtains 39 parts and contain
The fine aggregate of barite；Parts by weight are taken for 26 parts of coarse aggregates, add weight number is 11 barite rubbles thereto, obtains 37 parts
The coarse aggregate of the rubble of crystalline substance containing weight；
2) by step 1) in the mineral of fine aggregate and 20 part baric slags of 39 parts of the parts by weight that obtain containing barite blend
Material is placed in wet milk, and 0.9 part of polymeric polyols alcohols grinding aid of add weight number adds water according to ratio of the water material weight than 0.6, ball
Mill 2 hours；
3) by step 2) in the slurry that obtains be positioned over blender, plus step 1) in 37 parts of parts by weight obtaining brilliant containing weight
The coarse aggregate of rubble, 11 parts of cement, 20 parts of fluvial sand, 4 parts of water, 0.6 part of polycarboxylate based water reducer, stir to obtain mixture slurry
Material；
4) mixture paste injection mould is vibrated molding, maintenance obtains final product radiation shield concrete.
Embodiment 7：With embodiment 1, except for the difference that,
1) fine aggregate that parts by weight are 21 parts is taken, add weight number is 11 parts of barite sand thereto, obtains 32 parts and contain
The fine aggregate of barite；Parts by weight are taken for 35 parts of coarse aggregates, add weight number is 16 barite rubbles thereto, obtains 51 parts
The coarse aggregate of the rubble of crystalline substance containing weight；
2) by step 1) in the mineral of fine aggregate and 21 part baric slags of 32 parts of the parts by weight that obtain containing barite blend
Material is placed in wet milk, and 0.8 part of triethanolamine class grinding aid of add weight number adds water according to ratio of the water material weight than 0.6, ball milling
2 hours；
3) by step 2) in the slurry that obtains be positioned over blender, plus step 1) in 51 parts of parts by weight obtaining brilliant containing weight
The coarse aggregate of rubble, 9 parts of cement, 19 parts of fluvial sand, 7 parts of water, 0.7 part of polycarboxylate based water reducer, stir to obtain mixture slurry
Material；
4) mixture paste injection mould is vibrated molding, maintenance obtains final product radiation shield concrete.
The physical property technical specification of the radiation shield concrete of seven embodiments is shown in Table 1
Table 1
| Embodiment | The slump (mm) | Divergence (mm) | Strength factor | Freeze proof grade |
| Embodiment 1 | 200 | 500 | C40 | F250 |
| Embodiment 2 | 205 | 530 | C40 | F300 |
| Embodiment 3 | 205 | 520 | C40 | F250 |
| Embodiment 4 | 210 | 530 | C40 | F250 |
| Embodiment 5 | 205 | 510 | C40 | F300 |
| Embodiment 6 | 210 | 520 | C40 | F250 |
| Embodiment 7 | 205 | 520 | C40 | F300 |
From table 1, the radiation shield concrete physical properties of seven embodiment preparations are good, have preferable workability
Energy.
Linear attenuation coefficient (the cm of the radiation shield concrete of seven embodiments-1) it is shown in Table 2
Table 2
As seen from Table 2, the radiation shield concrete that prepared by seven embodiments is to the gamma-rays and neutron ray of varying strength
Linear attenuation coefficient is superior to external performance indications, is respectively provided with good shielding property.
The heavy metal ion of the radiation shield concrete of seven embodiments leaches index and is shown in Table 3
Table 3
As seen from Table 3, the heavy metal ion leaching concentration of the radiation shield concrete of seven embodiment preparations meets
GB5085.3-2007《Hazardous waste judging standard》Requirement.
Claims (6)
1. the method for preparing radiation shield concrete with discarded concrete and barite wet-grinding technology and relative device, it is characterised in that：Concrete steps
As follows：
1) the barium slag in discarded concrete, the mineral admixture of baric slag is respectively placed in disintegrating machine and is crushed to mean diameter 2-
The powder of 25mm, discarded concrete of the particle diameter less than 4.8mm are fine aggregate, and the discarded concrete more than 4.8mm is coarse aggregate, takes
Fine aggregate of the parts by weight for 20-28 parts, add weight number is the barite sand of 8-13 thereto, obtains the thin bone containing barite
Material；Parts by weight are taken for 23-37 part coarse aggregates, add weight number is 10-18 barite rubbles thereto, obtain the rubble of crystalline substance containing weight
Coarse aggregate；
The component and its content of the mineral admixture of the baric slag is calculated as according to mass percent：Barium slag 50%-60%, fine coal
Grey 20%-25%, breeze 6%-10%, silicon ash 5%-8%；
Barium slag in the mineral admixture of the baric slag is placed in disintegrating machine and is crushed to mean diameter 2-25mm；
2) by step 1) in the mineral of parts by weight 28-41 parts for obtaining fine aggregate and 18-22 part baric slags containing barite mix
Close material and be placed in wet milk, add weight number 0.6-0.9 part grinding aids add water according to ratio of the water material weight than 0.5-0.7, ball milling
2 hours, be 600-800m to specific surface area2/ kg, the slurry of 2-25 μm of average diameter of particles are aged 1 hour；
The grinding aid is triethanolamine class grinding aid or polymeric polyols alcohols grinding aid；
3) by step 2) in the slurry that obtains be positioned over blender, plus step 1) in parts by weight 33-55 parts for obtaining brilliant containing weight
The coarse aggregate of rubble, 8-12 part cement, 15-21 part fluvial sand, 4-7 part water, 0.4-0.8 part water reducers, stir to obtain mixture
Slurry；
The water reducer is polycarboxylate based water reducer or melamine system water reducer；
4) mixture paste injection mould is vibrated molding, maintenance obtains final product radiation shield concrete.
2. the method for preparing radiation shield concrete with discarded concrete and barite wet-grinding technology and relative device according to claim 1,
It is characterized in that：Step 1) used by barite sand, barite rubble be II grade of barite sand, barite rubble, II grade of weight is brilliant
In stone sand, barite rubble, quality proportion shared by barium sulfate is 90%-95%.
3. the side for preparing radiation shield concrete with discarded concrete and barite wet-grinding technology and relative device according to claim 1 and 2
Method, it is characterised in that：The particle diameter of barite sand is less than 5mm；The particle size range of barite rubble is in 5mm-35mm.
4. the method for preparing radiation shield concrete with discarded concrete and barite wet-grinding technology and relative device according to claim 1,
It is characterized in that：Step 1) used by disintegrating machine be impact crusher, impact breaker or jaw crusher.
5. the method for preparing radiation shield concrete with discarded concrete and barite wet-grinding technology and relative device according to claim 1,
It is characterized in that：Step 3) used by cement be 42.5 portland cements.
6. the method for preparing radiation shield concrete with discarded concrete and barite wet-grinding technology and relative device according to claim 1,
It is characterized in that：Step 3) used by blender be pears type, drum type or biconial blender.
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| CN107021711A (en) * | 2017-04-25 | 2017-08-08 | 济南大学 | A kind of nuclear power engineering cement concrete |
| CN108424017A (en) * | 2018-04-03 | 2018-08-21 | 济南大学 | A kind of radiation shield concrete active aggregates and preparation method thereof |
| CN108424107A (en) * | 2018-04-03 | 2018-08-21 | 济南大学 | A kind of radiation shield concrete |
| CN108793894A (en) * | 2018-08-25 | 2018-11-13 | 北京建工新型建材有限责任公司 | A kind of Barite anti-radiation concrete |
| CN110255943A (en) * | 2019-04-11 | 2019-09-20 | 武汉理工大学 | A kind of wet-milling barium slag admixture and its preparation method and application |
| CN110627426A (en) * | 2019-10-29 | 2019-12-31 | 湖北工业大学 | Preparation method of green ultrahigh-performance concrete |
| CN113292264A (en) * | 2021-05-28 | 2021-08-24 | 湖北工业大学 | Neutron radiation prevention special functional hydrogel for mass concrete and preparation method thereof |
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