CN106977145A - A kind of radiation shield concrete - Google Patents
A kind of radiation shield concrete Download PDFInfo
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- CN106977145A CN106977145A CN201710232762.8A CN201710232762A CN106977145A CN 106977145 A CN106977145 A CN 106977145A CN 201710232762 A CN201710232762 A CN 201710232762A CN 106977145 A CN106977145 A CN 106977145A
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/48—Metal
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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
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/023—Fired or melted 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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of radiation shield concrete, its drip irrigation device is, meter includes 340 360 parts of cement, 110 130 parts of miberal powder, 55 65 parts of flyash, 700 740 parts of weight crystal sand, 520 540 parts of barite, 425 475 parts of lightweight aggregate, 80 100 parts of fibrous additive, 170 180 parts of water, 89 parts of additive by weight, reach that unit weight is significantly reduced, workability is lifted, mechanical property is improved simultaneously, and original radiation protection ability also increases.
Description
Technical field
The present invention relates to concrete for making field, more particularly to a kind of radiation shield concrete.
Background technology
Radiation is present in whole cosmic space, and source radiation has natural radiation and man-made radiation, and natural radiation includes environment
Middle cosmic ray, gamma-rays, radon, α particle rays, man-made radiation have the fields such as nuclear power, military affairs, education, scientific research, medical treatment to apply
The various rays such as α, β, γ, X and neutron ray produced by journey, cancer, white blood can be induced by these ray chronic exposures
A variety of mankind's incurable diseases such as sick and multiple bone marrow cancer, malignant tumour, thyroid function disorder, sterility, miscarriage and birth defects,
Simultaneously can also inducing plant genetic mutation, harm the crops growth.
To prevent the various rays in environment from, to human injury, when being built with radiation source building, need to typically set anti-spoke
Material is penetrated to shield various rays, concrete is the basic material of building body radiation proof, is mainly used in education, scientific research, medical treatment
Mechanism has radiation source to build and the protection of nuclear reactor inside and outside shell.Radiation shield concrete mainly prevents α, β, γ, X and neutron ray
In injury to human body, these rays, α, β ray penetration capacity are low and are easily absorbed, and the protective materials of very little thickness can just shield
These rays are covered, the shielding to gamma-rays and neutron ray, gamma-rays penetration capacity are mainly considered during design radiation shield concrete
By force, it can be weakened by energy during high density construction material, when reaching certain density and thickness, and gamma-rays can be inhaled completely
Receive, neutron ray is because of neutral, so with height penetration capacity, hardly possible is protected relative to gamma-rays to neutron radiation protection
Degree is bigger.
At present both at home and abroad on improving radiation shield concrete mainly by adding the mineral admixture with heavy metal element
Radiation shield concrete performance improvement is lifted；And research have shown that concrete material incorporation Mg, Ti,14C、55Fe and60Co and Cu are equal
Concrete radiation protection ability can be improved, in actual production, serpentine, magnetic (red) iron ore, limonite, iron oxide can be used
Powder, barite, land plaster, ludwigite stone, chromite ore fine, galena etc. improve concrete shield containing heavy metal element aggregate
Gamma-rays and neutron ray ability.
In current anti-radiation building construction, heavy aggregate is used to carry out radiation proof mostly, heavy aggregate is to ray screen
The effect of covering is preferable, but because aggregate density is big, concrete density big, concrete construction poor performance, what is more important is using weight
Concrete prepares radiation shield concrete and can increase building deadweight and building pile basis is required, can also be anti-to building
Shock stability brings adverse effect.Therefore need when using radiation shield concrete, it is considered to the combination property of concrete, it is ensured that anti-spoke
Penetrate the final mass of concrete.
The content of the invention
It is an object of the invention to provide a kind of radiation shield concrete, reach that unit weight has obvious reduction, workability is carried
Rise, while mechanical property is improved, and possess higher radiation-proof effect.
The present invention above-mentioned technical purpose technical scheme is that：A kind of radiation shield concrete, is pressed
Parts by weight meter, includes 340-360 parts of cement, 110-130 parts of miberal powder, 55-65 parts of flyash, weight 700-740 parts of crystal sand, again
520-540 parts of spar, 425-475 parts of lightweight aggregate, 80-100 parts of fibrous additive, 170-180 parts of water, 8-9 parts of additive.
By above-mentioned technical proposal, it with the addition of after conventional cement miberal powder and flyash, selected heavy crystal sand instead of
Original river sand, wherein the main component of heavy crystal sand is barium sulfate, barium ions has good radiation protection ability, while addition is light
Aggregate, lightweight aggregate instead of original rubble, and the density of reduction to a certain extent, the selection of fibrous additive further passes through weight
Metal ion increases capability of resistance to radiation, while improving specific mechanical property, (compression strength, tensile splitting strength, bending are tough
Property), contrasted by the heavy aggregate radiation shield concrete with using at present it can be found that unit weight has obvious reduction, construction
Performance boost, while mechanical property is improved, and original radiation protection ability has also been lifted.
Preferably, lightweight aggregate is slag haydite.
By above-mentioned technical proposal, slag haydite belongs to natural haydite, belongs to gravel haydite, haydite concrete by
In light weight, modulus of elasticity is low, and anti-deformation is good, therefore with preferable anti-seismic performance and alkali resistant ability.
Preferably, fibrous additive includes material for PbO-BaO-B2O3Glass fibre and metallic fiber.
By above-mentioned technical proposal, glass fibre increases photoelectric absorption rate in ray and absorbs radiation attenuation coefficient and increases
Plus.PbO-BaO-B2O3Glass allows overall glass fibre to have more preferable shield effectiveness for gamma-rays due to Pb presence, carries
Metallic fiber is mainly increases the intensity of fiber while heavy metal element is introduced, so as to make the concrete for being mixed into fiber same
Improve mechanical property.
Preferably, glass fibre is 1.0-1.0 with metallic fiber weight ratio.
By above-mentioned technical proposal, the selection of glass fibre and metallic fiber is also due to the overall appearance of concrete to be reduced
Weight, addition glass fibre can reduce the unit weight of concrete, so that the workability allowed during concrete use improves.
Preferably, metallic fiber is the mixture of steel fibre and titanium fiber, the weight ratio of steel fibre and titanium fiber is 7：10.
By above-mentioned technical proposal, admixture steel fibre improves mechanical performance of concrete, but is improving concrete radiation proof
Not enough in ability, titanium fiber can not improve mechanical performance of concrete well but can significantly improve concrete to gamma-rays
Attenuation degree, while the density of titanium fiber is also significantly less than steel fibre, titanium fiber, which is added into concrete, to be reduced
The unit weight of concrete, therefore steel fibre can significantly improve mechanical performance of concrete with being declined to gamma-ray with titanium fiber hybrid fiber
Subtract degree, and the unit weight of radiation shield concrete can also be reduced, improve the workability of concrete.
Pass through preliminary broken and then carry out depth extruding again preferably, weight crystal sand is natural barite, reach modulus of fineness
2.3。
By above-mentioned technical proposal, weight crystal sand by depth it is broken after, the specific surface area of weight crystal sand significantly increases,
The contact area of radiation ray and weight crystal sand is improved, further gives and has added radiation protection ability.
Preferably, additive includes water reducer and air entraining agent.
By above-mentioned technical proposal, the use of water reducer reduces unit consumption of water, reduces gel rubber material consumption, it is ensured that coagulation
Soil mechanics performance；Improve the workability of concrete mix, improve impervious, improve durability, increase resistance to chemical corrosion；
The contraction after concrete hardening is reduced, prevents concrete component from cracking；Frost resistance is improved, winter construction is adapted to；Air entraining agent
Concrete slump, mobility and plasticity can be improved, can significantly improve concrete workability, pumpability and raising are impervious anti-
The endurance qualities such as jelly, more can effectively reduce concrete slump gradual loss.Concrete water bleeding and isolation are avoided, concrete is improved
Homogenieity.Because JDU has higher water-reducing rate, therefore mixing for water reducer can be greatly reduced, save application cost, increase
Economic benefit.
Preferably, the weight ratio of water reducer and air entraining agent is 1-1.2：0.1.
By above-mentioned technical proposal, when water reducer and air entraining agent are used cooperatively, simply say to be exactly to produce water-reducing effect
While increase the effect of beneficial minute bubbles, by the regulation to water reducer and air entraining agent ratio, with water reducer in concrete
The state, intensity, antifreeze, impervious effect of concrete can be improved with the use of air entraining agent.
In summary, the invention has the advantages that：
1st, the workability of the heavy aggregate radiation shield concrete used at present is poor, and the material of heavy aggregate is substituted for into lightweight aggregate material
After material, overall concrete density can diminish, and workability now can have a certain upgrade；
2nd, volcano dregs porcelain granule is chosen as lightweight aggregate, is rich in the dregs porcelain granule of volcano in a large amount of metal ions, these metallic elements
Cobalt, iron etc. can produce the effect of radiation proof, and choose volcano dregs porcelain granule due also to the corrosion-resistant effect that scoria possesses,
Concrete under arms during frequently encounter the excessive environment of the water content such as rainwater, humidity, the now volcano with resistance to acids and bases
Dregs porcelain granule can be good at maintaining the workability of concrete；
Although the 3, the addition of lightweight aggregate can reduce the unit weight of concrete, the mechanical properties decrease of concrete can be caused, and added
Plus steel fibre and titanium fiber can improve the mechanical property of concrete, and iron and titanium are also that can carry out radiation protection.
Embodiment
From the miberal powder for the S95 levels bought from Tianjin Cheng Jin companies, Tianjin North SinKiang environment-friendly building materials Co., Ltd in the present invention
Buy F (II) flyash；The PO42.5 bought from Tianjin Zhenxing Cement Co., Ltd. cement；The intense radiation protection of Jinan Thailand
The heavy crystal sand of engineering procurement, modulus of fineness 2.3；Shanxi herba fibraureae recisae chemical industry buys high performance water reducing agent of polyocarboxy acid；Save at Dongguan City deep-sea
The rosin 126A type air entraining agents that energy building materials Science and Technology Ltd. buys；The steel bought from Suzhou Long Yu steel fibres Co., Ltd is fine
Dimension；The glass fibre and titanium fiber bought by Ningguo Hengkang Glass Fiber Products Ltd..
Embodiment 1
Cement 340Kg, miberal powder 110Kg, flyash 55Kg, weight crystal sand 700Kg, barite 520Kg, lightweight aggregate 425Kg, glass fibers
Tie up 40Kg, steel fibre 16.47Kg, titanium fiber 23.53Kg, water 170Kg, additive 8Kg.
Embodiment 2
Cement 360Kg, miberal powder 130Kg, flyash 65Kg, weight crystal sand 740Kg, barite 540Kg, lightweight aggregate 425Kg, glass fibers
Tie up 40Kg, steel fibre 16.47Kg, titanium fiber 23.53Kg, water 180Kg, additive 8Kg.
Embodiment 3
Cement 350Kg, miberal powder 120Kg, flyash 60Kg, weight crystal sand 720Kg, barite 540Kg, lightweight aggregate 425Kg, glass fibers
Tie up 40Kg, steel fibre 16.47Kg, titanium fiber 23.53Kg, water 180Kg, additive 8Kg.
Embodiment 4
Cement 350Kg, miberal powder 120Kg, flyash 60Kg, weight crystal sand 720Kg, barite 530Kg, lightweight aggregate 450Kg, glass fibers
Tie up 45Kg, steel fibre 18.53Kg, titanium fiber 26.47Kg, water 175Kg, additive 8.5Kg.
Embodiment 5
Cement 350Kg, miberal powder 120Kg, flyash 60Kg, weight crystal sand 720Kg, barite 540Kg, lightweight aggregate 475Kg, glass fibers
Tie up 50Kg, steel fibre 20.58Kg, titanium fiber 29.42Kg, water 175Kg, additive 9Kg.
Concrete processing technology:
1st, weight crystal sand is that natural barite is passed through preliminary broken and then carries out depth extruding again, reaches modulus of fineness 2.3；
2nd, cement, miberal powder, fibrous additive, weight crystal sand, barite, flyash and the water of enough numbers are weighed first；
3rd, cement, miberal powder, fibrous additive, weight crystal sand, barite, flyash are poured into mixer and is stirred 0.5min；
4th, it is additive is soluble in water, and inject water into dry aggregate and be again stirring for 1.5min.
Comparative example is tested：
Comparative example 1：Cement 350Kg, miberal powder 120Kg, flyash 60Kg, barite 520Kg, river sand 720Kg, glass fibre
45Kg, steel fibre 18.53Kg, titanium fiber 26.47Kg, water 175Kg, additive 9Kg.
Comparative example 2：Cement 350Kg, miberal powder 120Kg, flyash 60Kg, weight crystal sand 720Kg, barite 520Kg, lightweight aggregate
475Kg, water 175Kg, additive 9Kg.
Comparative example 3：Cement 350Kg, miberal powder 120Kg, flyash 60Kg, weight crystal sand 720Kg, barite 520Kg, lightweight aggregate
475Kg, glass fibre 100Kg, water 175Kg, additive 9Kg.
Comparative example 4：Cement 350Kg, miberal powder 120Kg, flyash 60Kg, weight crystal sand 720Kg, lightweight aggregate 475Kg, metal are fine
Tie up 100Kg, water 175Kg, additive 9Kg.
Comparative example 5：Cement 350Kg, miberal powder 120Kg, flyash 60Kg, weight crystal sand 720Kg, barite 520Kg, lightweight aggregate
475Kg, steel fibre 100Kg, water 175Kg, additive 9Kg.
Comparative example 6：Cement 350Kg, miberal powder 120Kg, flyash 60Kg, weight crystal sand 985Kg, barite 1375Kg, water
175Kg, additive 9Kg.
Concrete slump, divergence assay method meet GB/T50080 regulation.
It should meet JGJ/T221 regulation for the steel fibre in concrete and other synthetic fibers.
Concrete radiation proof detection method is with reference to ionization radiation protection and the safe basic standard GB18871 of radiation source.
Mechanical property test method refers to mechanical performance of concrete test method GB50081-2002.
Gamma-rays sensing equipment：Nuclear radiation detection device.
Neutron ray sensing equipment：Neutron source.
Table one is radiation shield concrete line style attenuation coefficient (cm-1)
Table two is the measure of working performance of concrete.
Contrasted by adding comparative example 1 with embodiment, it can be found that after lightweight aggregate is changed into river sand, can reduce mixed
The overall radiation protection ability of solidifying soil, and after fibrous additive is saved, it is unfavorable for the long service and construction quality of concrete, and
After barite, weight crystal sand has all been substituted for, although overall radiation protection ability does not decline, but the workability in construction
It is deteriorated, and compressive property is also reduced, and unit weight also significantly rises, and excessive unit weight can both cause concrete construction performance to become
Difference, while barite content excessively also allows the mechanical property of monolithic concrete to be deteriorated, and barite is substituted for after lightweight aggregate, is held
Reduce, improved with the fiber for closing leaded by radiation protection ability again, and due to addition metal mixed fiber, so as to allow concrete
Overall radiation proof coagulation can be reduced with more excellent mechanical property, therefore by adding fibrous additive and volcano dregs porcelain granule
The unit weight of soil, improves concrete workability, simultaneously because the presence of fibrous additive and the heavy metal in the dregs porcelain granule of volcano, may be used also
Mixed with generally to lift the metallic fiber included in the radiation protection ability of concrete, fiber and coagulation is also improved in concrete
The overall mechanical property of soil, is finally realized in the case that radiation protection ability lifted, lifted concrete workability and
The purpose of mechanical property.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art
Member can make the modification without creative contribution to the present embodiment as needed after this specification is read, but as long as at this
All protected in the right of invention by Patent Law.
Claims (8)
1. a kind of radiation shield concrete, it is characterised in that：Count by weight, include 340-360 parts of cement, miberal powder 110-
130 parts, again 55-65 parts of flyash, 700-740 parts of crystal sand, 520-540 parts of barite, 425-475 parts of lightweight aggregate, fiber addition
80-100 parts of thing, 170-180 parts of water, 8-9 parts of additive.
2. a kind of radiation shield concrete according to claim 1, it is characterised in that：Lightweight aggregate is slag haydite.
3. a kind of radiation shield concrete according to claim 1, it is characterised in that：Fibrous additive includes material
PbO-BaO-B2O3Glass fibre and metallic fiber.
4. a kind of radiation shield concrete according to claim 3, it is characterised in that：Glass fibre and metallic fiber weight ratio
For 1.0-1.0.
5. a kind of radiation shield concrete according to claim 3, it is characterised in that：Metallic fiber is steel fibre and titanium fiber
Mixture, the weight ratio of steel fibre and titanium fiber is 7：10.
6. a kind of radiation shield concrete according to claim 1, it is characterised in that：Weight crystal sand is natural barite by just
Step is broken and then carries out depth extruding again, reaches modulus of fineness 2.3.
7. a kind of radiation shield concrete according to claim 1, it is characterised in that：Additive includes water reducer and bleed
Agent.
8. a kind of radiation shield concrete according to claim 7, it is characterised in that：The weight ratio of water reducer and air entraining agent is
1-1.2：0.1.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445573A (en) * | 2017-09-21 | 2017-12-08 | 南通盛赫园林古建筑工程有限公司 | A kind of radiation shield concrete |
| CN107827416A (en) * | 2017-11-21 | 2018-03-23 | 北京可耐可特新材料有限公司 | A kind of high intensity radiation proof pumpable concrete and preparation method thereof |
| CN107963844A (en) * | 2017-12-05 | 2018-04-27 | 浙江广天构件股份有限公司 | A kind of pumpable baryte |
| CN108059405A (en) * | 2017-12-06 | 2018-05-22 | 东南大学 | A kind of nuclear power plant containment shell 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 |
| CN108658563A (en) * | 2018-05-31 | 2018-10-16 | 宁波联城住工科技有限公司 | A kind of slag based geopolymer radiation shield concrete and preparation method thereof |
| CN109336496A (en) * | 2018-10-16 | 2019-02-15 | 成都宏基建材股份有限公司 | A kind of ordinary portland cement base radiation shield concrete and preparation method thereof |
| CN110981325A (en) * | 2019-12-23 | 2020-04-10 | 海宁市嘉海混凝土有限公司 | Radiation-proof high-strength concrete and production process thereof |
| CN111875314A (en) * | 2020-07-22 | 2020-11-03 | 北京怀建混凝土有限责任公司 | Radiation-proof concrete and preparation method thereof |
| CN112010593A (en) * | 2020-08-25 | 2020-12-01 | 湖州上建混凝土有限公司 | Radiation-proof concrete and preparation method thereof |
| CN112723827A (en) * | 2020-12-31 | 2021-04-30 | 冀东水泥重庆混凝土有限公司 | Radiation-proof concrete and preparation method thereof |
| CN112908505A (en) * | 2021-02-22 | 2021-06-04 | 中国核动力研究设计院 | High-temperature-resistant organic shielding material |
| CN113563029A (en) * | 2021-08-17 | 2021-10-29 | 武汉源锦商品混凝土有限公司 | Volcanic rock radiation-proof concrete |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445573A (en) * | 2017-09-21 | 2017-12-08 | 南通盛赫园林古建筑工程有限公司 | A kind of radiation shield concrete |
| CN107827416A (en) * | 2017-11-21 | 2018-03-23 | 北京可耐可特新材料有限公司 | A kind of high intensity radiation proof pumpable concrete and preparation method thereof |
| CN107827416B (en) * | 2017-11-21 | 2020-08-25 | 北京可耐可特新材料有限公司 | High-strength radiation-proof pumpable concrete and preparation method thereof |
| CN107963844A (en) * | 2017-12-05 | 2018-04-27 | 浙江广天构件股份有限公司 | A kind of pumpable baryte |
| CN108059405B (en) * | 2017-12-06 | 2020-08-11 | 东南大学 | Nuclear power station containment concrete |
| CN108059405A (en) * | 2017-12-06 | 2018-05-22 | 东南大学 | A kind of nuclear power plant containment shell 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 |
| CN108424017B (en) * | 2018-04-03 | 2020-09-29 | 济南大学 | Radiation-proof concrete active aggregate and preparation method thereof |
| CN108658563A (en) * | 2018-05-31 | 2018-10-16 | 宁波联城住工科技有限公司 | A kind of slag based geopolymer radiation shield concrete and preparation method thereof |
| CN108658563B (en) * | 2018-05-31 | 2020-12-11 | 广东联城住工装备信息科技有限公司 | Slag-based polymer radiation-proof concrete and preparation method thereof |
| CN109336496A (en) * | 2018-10-16 | 2019-02-15 | 成都宏基建材股份有限公司 | A kind of ordinary portland cement base radiation shield concrete and preparation method thereof |
| CN110981325A (en) * | 2019-12-23 | 2020-04-10 | 海宁市嘉海混凝土有限公司 | Radiation-proof high-strength concrete and production process thereof |
| CN111875314A (en) * | 2020-07-22 | 2020-11-03 | 北京怀建混凝土有限责任公司 | Radiation-proof concrete and preparation method thereof |
| CN112010593A (en) * | 2020-08-25 | 2020-12-01 | 湖州上建混凝土有限公司 | Radiation-proof concrete and preparation method thereof |
| CN112010593B (en) * | 2020-08-25 | 2022-03-29 | 湖州上建混凝土有限公司 | Radiation-proof concrete and preparation method thereof |
| CN112723827A (en) * | 2020-12-31 | 2021-04-30 | 冀东水泥重庆混凝土有限公司 | Radiation-proof concrete and preparation method thereof |
| CN112908505A (en) * | 2021-02-22 | 2021-06-04 | 中国核动力研究设计院 | High-temperature-resistant organic shielding material |
| CN113563029A (en) * | 2021-08-17 | 2021-10-29 | 武汉源锦商品混凝土有限公司 | Volcanic rock radiation-proof concrete |
| CN113563029B (en) * | 2021-08-17 | 2022-07-05 | 武汉源锦商品混凝土有限公司 | Volcanic rock radiation-proof concrete |
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