CN109231933A - A kind of radiation shield concrete and preparation method thereof - Google Patents
A kind of radiation shield concrete and preparation method thereof Download PDFInfo
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- CN109231933A CN109231933A CN201811205817.7A CN201811205817A CN109231933A CN 109231933 A CN109231933 A CN 109231933A CN 201811205817 A CN201811205817 A CN 201811205817A CN 109231933 A CN109231933 A CN 109231933A
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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
- C04B28/06—Aluminous 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00431—Refractory 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
- C04B2111/00474—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
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- Chemical Kinetics & Catalysis (AREA)
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to concrete fields, a kind of radiation shield concrete and preparation method thereof is specifically disclosed, the concrete is made of following material: 300-350 parts of cement, 900-1200 parts of fine aggregate, 1200-1500 parts of coarse aggregate, 60-80 parts of fiber, 10-20 parts of neutron-absorbing material, 0.4-0.6 parts of water-reducing agent, 145-165 parts of water, based on parts by weight.Radiation shield concrete prepared by the present invention meets the intensity requirement of C30 concrete, and no segregation phenomenon occurs, and slump and divergence are good, and bulk density circle is in 2900-2950kgm3Between, meet requirement of the radiation shield concrete to bulk density；Have the characteristics that simultaneously working performance is excellent, shielding property is good, it is at low cost, can fire resisting, cracking resistance, this advantageously accounts for traditional radiation shield concrete and is easy isolation, the problems such as homogenieity is poor, workability is bad, and have fire resisting, the application problem in demand of anti-crack environment.
Description
Technical field
The invention belongs to concrete fields, specifically disclose a kind of radiation shield concrete and preparation method thereof.
Background technique
Radiation is present in entire cosmic space, can be divided into natural radiation and man-made radiation.Natural radiation is mostly derived from universe
Ray etc., man-made radiation are mostly derived from the fields such as nuclear power, military affairs, education, medical treatment, scientific research and are produced during application nuclear technology
The rays such as raw α, β, γ, X and neutron current, the mankind are easy to induce cancer, leukaemia, first after by these ray chronic exposures
A variety of diseases such as the disorder of shape gland technical ability, sterility, birth defects, while being also easy to induce the generation gene change of other animal or plants
It is different etc..Radiation proof material need to be generally set to shield when being built with radiation source building for the injury of prevention Radiation On Human class etc.
Various rays, concrete material are current the most widely used radiation proof materials, are mainly used as building shell protection.
It is general by introducing barite, magnetic iron ore, limonite ore etc. in the existing technology of preparing of radiation shield concrete
Make coarse-fine aggregate, while introducing the light element compounds such as the enough crystallization water and boracic, lithium to prepare radiation shield concrete.Using
The radiation shield concrete of this method preparation, coarse-fine aggregate can effectively shield the rays such as α, β, γ, X, and light element compound can have
Effect captures neutron and does not generate secondary gamma-rays, has preferable shielding action to ray, but due to aggregate density in concrete
Larger, usually there is the problems such as isolation, homogenieity is poor, workability is bad in concrete, and which prevent pushing away for radiation shield concrete
Extensively with application.
Copper ashes is that molten state copper slag of the Copper Ores after refining is formed in water quenching pool by water quenching technology after furnace
Nature of glass Water Quenching Slag.In the copper smelting by pyrometallurgy in China, every 1 ton of copper of production generates 2-3 tons of copper ashes.The annual copper ashes discharge amount in China
It is huge, it is in accumulation deposit state mostly, copper ashes volume of cargo in storage in China's is already more than 50,000,000 tons at present, not only land occupation, dirt
Environment is contaminated, and causes the huge waste of resource.The elements such as Fe, Cu rich in, main chemical compositions content: Fe in copper ashes
For 41.3%, Cu 0.8%, Fe3O4For 8.4%, SiO2For 29%, Al2O3For 3.9%, CaO 3.6%, MgO 1.1%；
Its mineral composition is mainly the amorphous glass body of fayalite, magnetic iron ore and some gangues composition, and structural compactness is high, materialization
Performance is stablized.The fineness modulus of the granulated copper slag of reset condition is similar to coarse sand, and the general boundary of apparent density is in 3000-3500kg
m-3。
Basalt category basic volcanic rocks are the main component and earth continental crust of earth oceanic crust and moon lunar maria
With the important composition substance in moon moon land.The basaltic general boundary of apparent density is in 2800-3300kgm-3, compact structure, property
It can stablize.
Therefore, it is mixed to develop a kind of radiation protection for being not easy to isolate, homogenieity is good, workability is excellent, at low cost, performance is good
Solidifying soil is imperative.
Summary of the invention
The purpose of the present invention is to provide a kind of radiation shield concretes for being not easy to isolate, homogenieity is good, workability is excellent
And preparation method thereof, which is also equipped with good shielding property, fire resistance and cracking resistance simultaneously.
Technical scheme is as follows:
A kind of radiation shield concrete is made of following material: 300-350 parts of cement, 900-1200 parts of fine aggregate, coarse aggregate
1200-1500 parts, 60-80 parts of fiber, 10-20 parts of neutron-absorbing material, 0.4-0.6 parts of water-reducing agent, 145-165 parts of water, with weight
Number meter.
Preferably, a kind of radiation shield concrete, is made of following material: 310-340 parts of cement, fine aggregate 950-1100
Part, 1250-1400 parts of coarse aggregate, 65-75 parts of fiber, 15-20 parts of neutron-absorbing material, 0.45-0.55 parts of water-reducing agent, water 150-
160 parts, based on parts by weight.
Further, a kind of radiation shield concrete is made of following material: 325 parts of cement, 1000 parts of fine aggregate, thick bone
Expect 1300 parts, 70 parts of fiber, 18 parts of neutron-absorbing material, 0.5 part of water-reducing agent, 155 parts of water, based on parts by weight.
The cement is selected from barium aluminate cement, is provided by Zhengzhou Kang Hui Nai Cai Co., Ltd, and performance test results are as follows:
Specific surface area 366m2·kg-1, presetting period 106min, final setting time 127min, 1 day compression strength 76.3MPa, 3 days pressure resistances
Spend 80.1MPa, Al2O3Content 55.46%, BaO content 37.45%, CaO content 7.32%, other performance meets the requirements.
The fine aggregate is selected from the granulated copper slag after mechanical treatment, and the mode of mechanical treatment is as follows: first by water quenching copper
Slag pulverizes in cement testing ball mill, runing time 3min, makes in granulated copper slag that unsubstantial structure is by premature degradation, together
When reduce its average particle size；Then the granulated copper slag rolled by ball mill is sieved, takes particle size range
4.75mm or less whole particle makees the fine aggregate in the present invention.The particle size distribution situation of granulated copper slag after mechanical treatment:
4.75mm, which tails over 0.6%, 2.36mm and tails over 3.7%, 1.18mm and tail over 19%, 0.6mm and tail over 63.5%, 0.3mm, to be tailed over
89.2%, 0.15mm tails over 96.7%.Main chemical compositions content in granulated copper slag: Fe 41.3%, Cu 0.8%, Fe3O4
For 8.4%, SiO2For 29%, Al2O3For 3.9%, CaO 3.6%, MgO 1.1%, mineral composition is mainly iron olive
The amorphous glass body of stone, magnetic iron ore and some gangues composition is 3260kgm than table density-3。
The coarse aggregate is selected from 5-20mm continuous grading basaltic broken stone, apparent density 2910kgm-3, clay content
0.4%, clod content 0.1%, elongated particles 5.3%, crush values 4.3%, compressive strength of rock 183Mpa.
The fiber is selected from steel fibre cold-rolled steel wave shear model steel fiber, and by Sichuan, Heng Chuan special fibre Co., Ltd is mentioned
For performance indexes is qualified, diameter 0.5mm, draw ratio 50.
The neutron adsorbent is selected from colemanite mountain flour, is provided by Yingkou Tianyun Chemicals Research Institute Co., Ltd.,
Chemical formula is Ca2B6O11·5H2O has the spies such as nontoxic, low aqueous solubility, high thermal stability, granularity is small, specific gravity is small, good dispersion
Point.
The water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, are mentioned by Sequa Corp of Switzerland
For, solid content 50%, water-reducing rate 40% is good with cement and mineral admixture adaptability.
A kind of preparation method of radiation shield concrete, the specific steps are as follows:
(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, fine aggregate, coarse aggregate, fiber, neutron-absorbing material
It puts into concrete mixer；
(2) water-reducing agent and water are mixed into the dilute solution containing water-reducing agent again；
(3) start blender, stirring 30-60s is uniformly mixed the material in blender first, then starts into blender
Above-mentioned dilute solution is at the uniform velocity added, solution all adds time control within the scope of 10-15s, continues to stir 3-5min, can make
Obtain radiation shield concrete.
Barium aluminate cement is the bonding component of radiation shield concrete in the present invention, which has fire-resistance property, together
Shi Yin is rich in barium element, and barium aluminate cement has good shielding property.
Copper ashes fine aggregate and basaltic broken stone constitute the aggregate system of radiation shield concrete in the present invention.
Fine aggregate generally occupies higher volume ratio in concrete, and fine aggregate is the pass between gelling system and coarse aggregate
Key tie is one of important factor in order of concrete performance.Fine aggregate in concrete except can play the effect of rigid aggregate and
The effect for preventing micro-crack extension, can also be filled in the gap formed between coarse aggregate particle, play and fill closely knit work
With.Bonding component is filled primarily with again in the gap formed between fine aggregate particle, and the good fine aggregate of grain composition tends to shape
At itself even closer accumulation, this not only can effectively fill the gap formed between coarse aggregate particle, but also can be reduced to filling certainly
Gelling system dosage needed for the gap formed between body particle.Therefore, fine aggregate can not only influence the workability of concrete
Energy, mechanical property, volume stability and durability etc., and influence whether gelling system dosage and production material at
This.Fine aggregate used in the present invention is the copper ashes after mechanical treatment, and grain composition is good, clay content is low, this facilitates
So that concrete is obtained good working performance, mechanical property, volume stability and durability etc., while reducing bonding component
Dosage.In addition, the copper ashes fine aggregate in the present invention can also play alpha ray shield effect, this is because rich in copper ashes
The elements such as Fe, Cu, mineral composition are mainly the amorphous glass body of fayalite, magnetic iron ore and some gangues composition, structure
Consistency is high.
Coarse aggregate generally occupies very high volume ratio in concrete, and in normal concrete, coarse aggregate can play rigidity
Skeleton function and the effect for stopping micro-crack extension, to improve the intensity and elasticity modulus, enhancing concrete of concrete
Volume stability and durability etc..Coarse aggregate used in the present invention be basaltic broken stone, in addition to above-mentioned effect, can also play shielding α,
The effect of the rays such as β, γ, X.Though basalt apparent density is far below barite, because with performance is sufficiently stable, structure very
Fine and close, the features such as compression strength is high, gravel particle gradation is good, still there is good shielding properties to ray, in concrete
Phenomena such as being less prone to isolation.
The present invention constitutes the aggregate system of radiation shield concrete using copper ashes fine aggregate and basaltic broken stone, is sufficiently examining
On the basis of considering coarse-fine aggregate physical chemical characteristics, based on closestpacking principle etc., it is determined that sand coarse aggregate ratio (the i.e. fine aggregate of aggregate system
Weight ratio in aggregate system), so that aggregate system is met closestpacking principle, the isolation of concrete can be effectively reduced in this
Probability improves the homogeneity of concrete, promotes concrete construction performance, reduces bonding component dosage, saves material cost.
The present invention makees the fibre reinforced materials of radiation shield concrete using steel fibre, and steel fibre is main in radiation shield concrete
Play two kinds of effects: one, fiber reinforcement acts on, and steel fibre serves as the medium of inside concrete stress conduction, both can be effective
Inside concrete stress and external stress are reduced to its structural damage；Two, alpha ray shield acts on, and steel fibre to a certain extent may be used
Enhance the capability of resistance to radiation of concrete.
Colemanite mountain flour is mainly used for weakening neutron irradiation in the present invention, when receiving neutron current impact, colemanite mountain flour
In boron element and neutron collide and can weaken the energy of neutron significantly.
High performance water reducing agent of polyocarboxy acid is mainly used for reducing concrete water amount in the present invention, improves the mechanical property of concrete
Can, while improving the fluidity and workability of concrete, main function mechanism is: equivalent by electrostatic repulsion and steric hindrance
It should make hydrone high degree of dispersion, efficiently utilization in concrete gelling system, to reduce the use of concrete under certain fluidity
Water.
Radiation shield concrete is an organic whole in the present invention, and material is formed by bonding component, coarse-fine aggregate, fibre
Dimension, additive and water are constituted, and are made of in structure Behavior of Hardened Cement Paste, aggregate and fiber and interfacial transition zone, difference composition, different structure
Between influence each other, complement each other.
The beneficial effects of the present invention are:
The present invention provides a kind of radiation shield concrete, is made of following material: 300-350 parts of cement, fine aggregate 900-
1200 parts, 1200-1500 parts of coarse aggregate, 60-80 parts of fiber, 10-20 parts of neutron-absorbing material, 0.4-0.6 parts of water-reducing agent, water 145-
165 parts, based on parts by weight.Barium aluminate cement is the bonding component of radiation shield concrete in the present invention, which has
Fire-resistance property, while because being rich in barium element, barium aluminate cement has good shielding property；Simultaneously using copper ashes fine aggregate with
Basaltic broken stone constitutes the aggregate system of radiation shield concrete, which has a characteristic that one, is broken using basalt
Stone greatly reduces the apparent density of coarse aggregate instead of traditional barite coarse aggregate, avoids coarse aggregate and is newly mixing coagulation
There is " sinking " phenomenon separated with slurry because gravity is excessively concentrated in soil, while basalt has preferable alpha ray shield
Energy；Two, using the copper ashes fine aggregate by mechanical treatment instead of traditional barite fine aggregate, natural sand or the thin bone of artificial sand
Material；Relative to barite fine aggregate, copper ashes fine aggregate not only has good ray shielding performance, but also has lower apparent close
Degree, this is conducive to improve gravity concentration effect of the fine aggregate in fresh concrete；Relative to natural sand or artificial sand fine aggregate,
The apparent density of copper ashes fine aggregate is slightly higher, but since dispersion degree is higher in concrete for fine aggregate, slightly higher apparent of copper ashes
Density bring gravity concentration effect influences smaller, and copper ashes fine aggregate has penetrating much higher than natural sand or artificial sand fine aggregate
Line shielding properties；Three, on the basis of fully considering copper ashes fine aggregate and basaltic broken stone physicochemical characteristic, it is based on closestpacking
Principle etc., it is determined that the sand coarse aggregate ratio (i.e. weight ratio of the fine aggregate in aggregate system) of aggregate system meets aggregate system most tight
Close-packed principle can further improve the homogeneity of concrete, concrete is avoided to isolate, and promote concrete construction performance,
Bonding component dosage is reduced, material cost is saved.
A kind of radiation shield concrete prepared by the present invention, the concrete meet the intensity requirement of C30 concrete, and no isolation is existing
As occurring, slump and divergence are good, and bulk density circle is in 2950-3000kgm-3Between, meet radiation shield concrete to bulk density
Requirement；Simultaneously have the characteristics that working performance is excellent, shielding property is good, it is at low cost, can fire resisting, cracking resistance, this is conducive to solve
The problems such as certainly traditional radiation shield concrete is easy isolation, homogenieity is poor, workability is bad, and having fire resisting, demand of anti-crack
Application problem in environment.
Specific embodiment:
The present invention is further illustrated below by embodiment.
Embodiment 1:
A kind of radiation shield concrete is made of following material: 325 parts of cement, 1000 parts of fine aggregate, 1300 parts of coarse aggregate,
70 parts of fiber, 18 parts of neutron-absorbing material, 0.5 part of water-reducing agent, 155 parts of water, based on parts by weight.
Wherein, cement is selected from barium aluminate cement, is provided by Zhengzhou Kang Hui Nai Cai Co., Ltd, performance test results are such as
Under: specific surface area 366m2·kg-1, presetting period 106min, final setting time 127min, 1 day compression strength 76.3MPa, 3 days anti-
Compressive Strength 80.1MPa, Al2O3Content 55.46%, BaO content 37.45%, CaO content 7.32%, other performance conforms to
It asks.
Wherein, fine aggregate is selected from the granulated copper slag after mechanical treatment, and the mode of mechanical treatment is as follows: first by water quenching copper
Slag pulverizes in cement testing ball mill (runing time 3min), and unsubstantial structure in granulated copper slag can be made to be broken in advance
It is bad, while reducing its average particle size；Then the granulated copper slag rolled by ball mill is sieved, takes particle size range
4.75mm or less whole particle makees the fine aggregate in the present invention.The particle size distribution situation of granulated copper slag after mechanical treatment:
4.75mm, which tails over 0.6%, 2.36mm and tails over 3.7%, 1.18mm and tail over 19%, 0.6mm and tail over 63.5%, 0.3mm, to be tailed over
89.2%, 0.15mm tails over 96.7%.Main chemical compositions content in granulated copper slag: Fe 41.3%, Cu 0.8%, Fe3O4
For 8.4%, SiO2For 29%, Al2O3For 3.9%, CaO 3.6%, MgO 1.1%, mineral composition is mainly iron olive
The amorphous glass body of stone, magnetic iron ore and some gangues composition is 3260kgm than table density-3。
Wherein, coarse aggregate is selected from 5-20mm continuous grading basaltic broken stone, apparent density 2910kgm-3, clay content
0.4%, clod content 0.1%, elongated particles 5.3%, crush values 4.3%, compressive strength of rock 183Mpa.
Wherein, fiber is selected from steel fibre cold-rolled steel wave shear model steel fiber, by Sichuan Heng Chuan special fibre Co., Ltd
It provides, performance indexes is qualified, diameter 0.5mm, draw ratio 50.
Wherein, neutron adsorbent is selected from colemanite mountain flour, is provided by Yingkou Tianyun Chemicals Research Institute Co., Ltd.,
Chemical formula is Ca2B6O11·5H2O has the spies such as nontoxic, low aqueous solubility, high thermal stability, granularity is small, specific gravity is small, good dispersion
Point.
Wherein, water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, by Sequa Corp of Switzerland
It provides, solid content 50%, water-reducing rate 40% is good with cement and mineral admixture adaptability.
A kind of preparation method of radiation shield concrete, the specific steps are as follows:
(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, fine aggregate, coarse aggregate, fiber, neutron-absorbing material
It puts into concrete mixer；
(2) water-reducing agent and water are mixed into the dilute solution containing water-reducing agent again；
(3) start blender, stirring 30s is uniformly mixed the material in blender first, then starts even into blender
Above-mentioned dilute solution is added in speed, and solution all adds time control within the scope of 10-15s, continues to stir 3-5min, can be prepared by
Radiation shield concrete.
Embodiment 2:
A kind of radiation shield concrete is made of following material: 310 parts of cement, 1000 parts of fine aggregate, 1300 parts of coarse aggregate,
70 parts of fiber, 18 parts of neutron-absorbing material, 0.5 part of water-reducing agent, 153 parts of water, based on parts by weight.
Wherein, cement is selected from barium aluminate cement, is provided by Zhengzhou Kang Hui Nai Cai Co., Ltd, performance test results are such as
Under: specific surface area 366m2·kg-1, presetting period 106min, final setting time 127min, 1 day compression strength 76.3MPa, 3 days anti-
Compressive Strength 80.1MPa, Al2O3Content 55.46%, BaO content 37.45%, CaO content 7.32%, other performance conforms to
It asks.
Wherein, fine aggregate is selected from the granulated copper slag after mechanical treatment, and the mode of mechanical treatment is as follows: first by water quenching copper
Slag pulverizes in cement testing ball mill (runing time 3min), and unsubstantial structure in granulated copper slag can be made to be broken in advance
It is bad, while reducing its average particle size；Then the granulated copper slag rolled by ball mill is sieved, takes particle size range
4.75mm or less whole particle makees the fine aggregate in the present invention.The particle size distribution situation of granulated copper slag after mechanical treatment:
4.75mm, which tails over 0.6%, 2.36mm and tails over 3.7%, 1.18mm and tail over 19%, 0.6mm and tail over 63.5%, 0.3mm, to be tailed over
89.2%, 0.15mm tails over 96.7%.Main chemical compositions content in granulated copper slag: Fe 41.3%, Cu 0.8%, Fe3O4
For 8.4%, SiO2For 29%, Al2O3For 3.9%, CaO 3.6%, MgO 1.1%, mineral composition is mainly iron olive
The amorphous glass body of stone, magnetic iron ore and some gangues composition is 3260kgm than table density-3。
Wherein, coarse aggregate is selected from 5-20mm continuous grading basaltic broken stone, apparent density 2910kgm-3, clay content
0.4%, clod content 0.1%, elongated particles 5.3%, crush values 4.3%, compressive strength of rock 183Mpa.
Wherein, fiber is selected from steel fibre cold-rolled steel wave shear model steel fiber, by Sichuan Heng Chuan special fibre Co., Ltd
It provides, performance indexes is qualified, diameter 0.5mm, draw ratio 50.
Wherein, neutron adsorbent is selected from colemanite mountain flour, is provided by Yingkou Tianyun Chemicals Research Institute Co., Ltd.,
Chemical formula is Ca2B6O11·5H2O has the spies such as nontoxic, low aqueous solubility, high thermal stability, granularity is small, specific gravity is small, good dispersion
Point.
Wherein, water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, by Sequa Corp of Switzerland
It provides, solid content 50%, water-reducing rate 40% is good with cement and mineral admixture adaptability.
A kind of preparation method of radiation shield concrete, the specific steps are as follows:
(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, fine aggregate, coarse aggregate, fiber, neutron-absorbing material
It puts into concrete mixer；
(2) water-reducing agent and water are mixed into the dilute solution containing water-reducing agent again；
(3) start blender, stirring 30s is uniformly mixed the material in blender first, then starts even into blender
Above-mentioned dilute solution is added in speed, and solution all adds time control within the scope of 10-15s, continues to stir 3-5min, can be prepared by
Radiation shield concrete.
Embodiment 3:
A kind of radiation shield concrete is made of following material: 340 parts of cement, 1000 parts of fine aggregate, 1300 parts of coarse aggregate,
70 parts of fiber, 18 parts of neutron-absorbing material, 0.5 part of water-reducing agent, 157 parts of water, based on parts by weight.
Wherein, cement is selected from barium aluminate cement, is provided by Zhengzhou Kang Hui Nai Cai Co., Ltd, performance test results are such as
Under: specific surface area 366m2·kg-1, presetting period 106min, final setting time 127min, 1 day compression strength 76.3MPa, 3 days anti-
Compressive Strength 80.1MPa, Al2O3Content 55.46%, BaO content 37.45%, CaO content 7.32%, other performance conforms to
It asks.
Wherein, fine aggregate is selected from the granulated copper slag after mechanical treatment, and the mode of mechanical treatment is as follows: first by water quenching copper
Slag pulverizes in cement testing ball mill (runing time 3min), and unsubstantial structure in granulated copper slag can be made to be broken in advance
It is bad, while reducing its average particle size；Then the granulated copper slag rolled by ball mill is sieved, takes particle size range
4.75mm or less whole particle makees the fine aggregate in the present invention.The particle size distribution situation of granulated copper slag after mechanical treatment:
4.75mm, which tails over 0.6%, 2.36mm and tails over 3.7%, 1.18mm and tail over 19%, 0.6mm and tail over 63.5%, 0.3mm, to be tailed over
89.2%, 0.15mm tails over 96.7%.Main chemical compositions content in granulated copper slag: Fe 41.3%, Cu 0.8%, Fe3O4
For 8.4%, SiO2For 29%, Al2O3For 3.9%, CaO 3.6%, MgO 1.1%, mineral composition is mainly iron olive
The amorphous glass body of stone, magnetic iron ore and some gangues composition is 3260kgm than table density-3。
Wherein, coarse aggregate is selected from 5-20mm continuous grading basaltic broken stone, apparent density 2910kgm-3, clay content
0.4%, clod content 0.1%, elongated particles 5.3%, crush values 4.3%, compressive strength of rock 183Mpa.
Wherein, fiber is selected from steel fibre cold-rolled steel wave shear model steel fiber, by Sichuan Heng Chuan special fibre Co., Ltd
It provides, performance indexes is qualified, diameter 0.5mm, draw ratio 50.
Wherein, neutron adsorbent is selected from colemanite mountain flour, is provided by Yingkou Tianyun Chemicals Research Institute Co., Ltd.,
Chemical formula is Ca2B6O11·5H2O has the spies such as nontoxic, low aqueous solubility, high thermal stability, granularity is small, specific gravity is small, good dispersion
Point.
Wherein, water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, by Sequa Corp of Switzerland
It provides, solid content 50%, water-reducing rate 40% is good with cement and mineral admixture adaptability.
A kind of preparation method of radiation shield concrete, the specific steps are as follows:
(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, fine aggregate, coarse aggregate, fiber, neutron-absorbing material
It puts into concrete mixer；
(2) water-reducing agent and water are mixed into the dilute solution containing water-reducing agent again；
(3) start blender, stirring 30s is uniformly mixed the material in blender first, then starts even into blender
Above-mentioned dilute solution is added in speed, and solution all adds time control within the scope of 10-15s, continues to stir 3-5min, can be prepared by
Radiation shield concrete.
Embodiment 4:
A kind of radiation shield concrete is made of following material: 325 parts of cement, 950 parts of fine aggregate, 1350 parts of coarse aggregate, fibre
70 parts, 18 parts of neutron-absorbing material, 0.5 part of water-reducing agent, 155 parts of water are tieed up, based on parts by weight.
Wherein, cement is selected from barium aluminate cement, is provided by Zhengzhou Kang Hui Nai Cai Co., Ltd, performance test results are such as
Under: specific surface area 366m2·kg-1, presetting period 106min, final setting time 127min, 1 day compression strength 76.3MPa, 3 days anti-
Compressive Strength 80.1MPa, Al2O3Content 55.46%, BaO content 37.45%, CaO content 7.32%, other performance conforms to
It asks.
Wherein, fine aggregate is selected from the granulated copper slag after mechanical treatment, and the mode of mechanical treatment is as follows: first by water quenching copper
Slag pulverizes in cement testing ball mill (runing time 3min), and unsubstantial structure in granulated copper slag can be made to be broken in advance
It is bad, while reducing its average particle size；Then the granulated copper slag rolled by ball mill is sieved, takes particle size range
4.75mm or less whole particle makees the fine aggregate in the present invention.The particle size distribution situation of granulated copper slag after mechanical treatment:
4.75mm, which tails over 0.6%, 2.36mm and tails over 3.7%, 1.18mm and tail over 19%, 0.6mm and tail over 63.5%, 0.3mm, to be tailed over
89.2%, 0.15mm tails over 96.7%.Main chemical compositions content in granulated copper slag: Fe 41.3%, Cu 0.8%, Fe3O4
For 8.4%, SiO2For 29%, Al2O3For 3.9%, CaO 3.6%, MgO 1.1%, mineral composition is mainly iron olive
The amorphous glass body of stone, magnetic iron ore and some gangues composition is 3260kgm than table density-3。
Wherein, coarse aggregate is selected from 5-20mm continuous grading basaltic broken stone, apparent density 2910kgm-3, clay content
0.4%, clod content 0.1%, elongated particles 5.3%, crush values 4.3%, compressive strength of rock 183Mpa.
Wherein, fiber is selected from steel fibre cold-rolled steel wave shear model steel fiber, by Sichuan Heng Chuan special fibre Co., Ltd
It provides, performance indexes is qualified, diameter 0.5mm, draw ratio 50.
Wherein, neutron adsorbent is selected from colemanite mountain flour, is provided by Yingkou Tianyun Chemicals Research Institute Co., Ltd.,
Chemical formula is Ca2B6O11·5H2O has the spies such as nontoxic, low aqueous solubility, high thermal stability, granularity is small, specific gravity is small, good dispersion
Point.
Wherein, water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, by Sequa Corp of Switzerland
It provides, solid content 50%, water-reducing rate 40% is good with cement and mineral admixture adaptability.
A kind of preparation method of radiation shield concrete, the specific steps are as follows:
(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, fine aggregate, coarse aggregate, fiber, neutron-absorbing material
It puts into concrete mixer；
(2) water-reducing agent and water are mixed into the dilute solution containing water-reducing agent again；
(3) start blender, stirring 30s is uniformly mixed the material in blender first, then starts even into blender
Above-mentioned dilute solution is added in speed, and solution all adds time control within the scope of 10-15s, continues to stir 3-5min, can be prepared by
Radiation shield concrete.
Embodiment 5:
A kind of radiation shield concrete is made of following material: 325 parts of cement, 1000 parts of fine aggregate, 1300 parts of coarse aggregate,
70 parts of fiber, 18 parts of neutron-absorbing material, 0.5 part of water-reducing agent, 157 parts of water, based on parts by weight.
Wherein, cement is selected from barium aluminate cement, is provided by Zhengzhou Kang Hui Nai Cai Co., Ltd, performance test results are such as
Under: specific surface area 366m2·kg-1, presetting period 106min, final setting time 127min, 1 day compression strength 76.3MPa, 3 days anti-
Compressive Strength 80.1MPa, Al2O3Content 55.46%, BaO content 37.45%, CaO content 7.32%, other performance conforms to
It asks.
Wherein, fine aggregate is selected from the granulated copper slag after mechanical treatment, and the mode of mechanical treatment is as follows: first by water quenching copper
Slag pulverizes in cement testing ball mill (runing time 3min), and unsubstantial structure in granulated copper slag can be made to be broken in advance
It is bad, while reducing its average particle size；Then the granulated copper slag rolled by ball mill is sieved, takes particle size range
4.75mm or less whole particle makees the fine aggregate in the present invention.The particle size distribution situation of granulated copper slag after mechanical treatment:
4.75mm, which tails over 0.6%, 2.36mm and tails over 3.7%, 1.18mm and tail over 19%, 0.6mm and tail over 63.5%, 0.3mm, to be tailed over
89.2%, 0.15mm tails over 96.7%.Main chemical compositions content in granulated copper slag: Fe 41.3%, Cu 0.8%, Fe3O4
For 8.4%, SiO2For 29%, Al2O3For 3.9%, CaO 3.6%, MgO 1.1%, mineral composition is mainly iron olive
The amorphous glass body of stone, magnetic iron ore and some gangues composition is 3260kgm than table density-3。
Wherein, coarse aggregate is selected from 5-20mm continuous grading basaltic broken stone, apparent density 2910kgm-3, clay content
0.4%, clod content 0.1%, elongated particles 5.3%, crush values 4.3%, compressive strength of rock 183Mpa.
Wherein, fiber is selected from steel fibre cold-rolled steel wave shear model steel fiber, by Sichuan Heng Chuan special fibre Co., Ltd
It provides, performance indexes is qualified, diameter 0.5mm, draw ratio 50.
Wherein, neutron adsorbent is selected from colemanite mountain flour, is provided by Yingkou Tianyun Chemicals Research Institute Co., Ltd.,
Chemical formula is Ca2B6O11·5H2O has the spies such as nontoxic, low aqueous solubility, high thermal stability, granularity is small, specific gravity is small, good dispersion
Point.
Wherein, water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, by Sequa Corp of Switzerland
It provides, solid content 50%, water-reducing rate 40% is good with cement and mineral admixture adaptability.
A kind of preparation method of radiation shield concrete, the specific steps are as follows:
(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, fine aggregate, coarse aggregate, fiber, neutron-absorbing material
It puts into concrete mixer；
(2) water-reducing agent and water are mixed into the dilute solution containing water-reducing agent again；
(3) start blender, stirring 30s is uniformly mixed the material in blender first, then starts even into blender
Above-mentioned dilute solution is added in speed, and solution all adds time control within the scope of 10-15s, continues to stir 3-5min, can be prepared by
Radiation shield concrete.
The radiation shield concrete the performance test results of Examples 1 to 5 preparation are as follows:
By data in upper table it is found that the radiation shield concrete of Examples 1 to 5 preparation meets the intensity requirement of C30 concrete,
Concrete occurs without segregation phenomenon, and the slump and divergence of concrete are good, and concrete density circle is in 2950-3000kg
m-3Between, meet requirement of the radiation shield concrete to bulk density.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Modification done within the spirit and principles of the present invention should all contain
Within protection scope of the present invention.
Claims (10)
1. a kind of radiation shield concrete, it is characterised in that: be made of following material: 300-350 parts of cement, fine aggregate 900-1200
Part, 1200-1500 parts of coarse aggregate, 60-80 parts of fiber, 10-20 parts of neutron-absorbing material, 0.4-0.6 parts of water-reducing agent, water 145-165
Part, based on parts by weight.
2. a kind of radiation shield concrete according to claim 1, it is characterised in that: be made of following material: cement 310-
340 parts, 950-1100 parts of fine aggregate, 1250-1400 parts of coarse aggregate, 65-75 parts of fiber, 15-20 parts of neutron-absorbing material, water-reducing agent
0.45-0.55 parts, 150-160 parts of water, based on parts by weight.
3. a kind of radiation shield concrete according to claim 2, it is characterised in that: be made of following material: cement 325
Part, 1000 parts of fine aggregate, 1300 parts of coarse aggregate, 70 parts of fiber, 18 parts of neutron-absorbing material, 0.5 part of water-reducing agent, 155 parts of water, with weight
Measure number meter.
4. a kind of radiation shield concrete according to claim 1 or 2 or 3, it is characterised in that: the cement is selected from barium aluminate
Cement, performance test results are as follows: specific surface area 366m2·kg-1, presetting period 106min, final setting time 127min, 1 day
Compression strength 76.3MPa, 3 days compression strength 80.1MPa, Al2O3Content 55.46%, BaO content 37.45%, CaO content
7.32%.
5. a kind of radiation shield concrete according to claim 1 or 2 or 3, it is characterised in that: the fine aggregate is selected from through machine
Tool treated granulated copper slag.
6. a kind of radiation shield concrete according to claim 5, it is characterised in that: the mode of the mechanical treatment is such as
Under: granulated copper slag is pulverized first, runing time 3min in cement testing ball mill, makes unsubstantial knot in granulated copper slag
Structure reduces its average particle size by premature degradation；Then the granulated copper slag rolled by ball mill is sieved, is taken
Make the fine aggregate in the present invention with the whole particles of particle size range 4.75mm or less.
7. a kind of radiation shield concrete according to claim 1 or 2 or 3, it is characterised in that: the coarse aggregate is selected from 5-
20mm continuous grading basaltic broken stone, apparent density 2910kgm-3, clay content 0.4%, clod content 0.1%, gill shape contains
Amount 5.3%, crush values 4.3%, compressive strength of rock 183Mpa.
8. a kind of radiation shield concrete according to claim 1 or 2 or 3, it is characterised in that: the fiber is selected from steel fibre
Cold-rolled steel wave shear model steel fiber, diameter 0.5mm, draw ratio 50；The neutron adsorbent is selected from colemanite mountain flour.
9. a kind of radiation shield concrete according to claim 1 or 2 or 3, it is characterised in that: the water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, solid content 50%, water-reducing rate 40%.
10. a kind of preparation method of radiation shield concrete according to claim 1 or 2 or 3, it is characterised in that: specific step
It is rapid as follows:
(1) raw material are accurately weighed by above-mentioned weight ratio, cement, fine aggregate, coarse aggregate, fiber, neutron-absorbing material is put into
In concrete mixer；
(2) water-reducing agent and water are mixed into the dilute solution containing water-reducing agent again；
(3) start blender, stirring 30-60s is uniformly mixed the material in blender first, then starts into blender at the uniform velocity
Above-mentioned dilute solution is added, solution all adds time control within the scope of 10-15s, continues to stir 3-5min, can be prepared by preventing
Radiate concrete.
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