CN109336496A - A kind of ordinary portland cement base radiation shield concrete and preparation method thereof - Google Patents
A kind of ordinary portland cement base radiation shield concrete and preparation method thereof Download PDFInfo
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- CN109336496A CN109336496A CN201811205652.3A CN201811205652A CN109336496A CN 109336496 A CN109336496 A CN 109336496A CN 201811205652 A CN201811205652 A CN 201811205652A CN 109336496 A CN109336496 A CN 109336496A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00258—Electromagnetic wave absorbing or shielding 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
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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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to concrete fields, specifically disclose a kind of ordinary portland cement base radiation shield concrete and preparation method thereof, the concrete is made of following material: 280-320 parts of cement, 900-1200 parts of fine aggregate, 1200-1500 parts of coarse aggregate, 10-20 parts of neutron-absorbing material, 0.4-0.6 parts of water-reducing agent, 140-160 parts of water, based on parts by weight.Ordinary portland cement base 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 2800-2900kgm3Between, meet requirement of the radiation shield concrete to bulk density；Have the characteristics that working performance is excellent, shielding property is good, at low cost simultaneously, this advantageously accounts for the problems such as traditional radiation shield concrete is easy isolation, homogenieity is poor, workability is bad.
Description
Technical field
The invention belongs to concrete fields, specifically disclose a kind of ordinary portland cement base radiation shield concrete and its preparation
Method.
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
It is not easy to isolate the purpose of the present invention is to provide one kind, homogenieity is good, workability is excellent, at low cost, performance is good
Ordinary portland cement base radiation shield concrete and preparation method thereof.
Technical scheme is as follows:
A kind of ordinary portland cement base radiation shield concrete, is made of following material: 280-320 parts of cement, fine aggregate
900-1200 parts, 1200-1500 parts of coarse aggregate, 10-20 parts of neutron-absorbing material, 0.4-0.6 parts of water-reducing agent, 140-160 parts of water, with
Parts by weight meter.
Preferably, a kind of ordinary portland cement base radiation shield concrete, is made of following material: cement 290-310
Part, 950-1100 parts of fine aggregate, 1250-1400 parts of coarse aggregate, 15-20 parts of neutron-absorbing material, 0.45-0.55 parts of water-reducing agent, water
145-155 parts, based on parts by weight.
Further, a kind of ordinary portland cement base radiation shield concrete, is made of following material: 300 parts of cement, thin
1000 parts of aggregate, 1300 parts of coarse aggregate, 18 parts of neutron-absorbing material, 0.5 part of water-reducing agent, 150 parts of water, based on parts by weight.
The cement is selected from 42.5 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance detection knot
Fruit is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min,
3 days flexural strengths 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
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, and unsubstantial structure can be made in granulated copper slag by premature degradation,
Its average particle size is reduced simultaneously；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 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 ordinary portland cement base radiation shield concrete, the specific steps are as follows:
(1) raw material are accurately weighed by above-mentioned weight ratio, cement, fine aggregate, coarse aggregate, neutron-absorbing material is put into mixed
In solidifying soil blender；
(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 ordinary portland cement base radiation shield concrete.
42.5 cement of P.O is the bonding component of radiation shield concrete in the present invention.
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.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.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.
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, by bonding component, coarse-fine aggregate, additional on material composition
Agent and water are constituted, and are made of in structure Behavior of Hardened Cement Paste, aggregate and interfacial transition zone, influence each other between difference composition, different structure,
It complements each other.
The beneficial effects of the present invention are:
The present invention provides a kind of ordinary portland cement base radiation shield concrete, is made of following material: cement 280-320
Part, 900-1200 parts of fine aggregate, 1200-1500 parts of coarse aggregate, 10-20 parts of neutron-absorbing material, 0.4-0.6 parts of water-reducing agent, water
140-160 parts, based on parts by weight.The present invention makees the bonding component of radiation shield concrete using 42.5 cement of P.O, utilizes copper
Slag fine aggregate and basaltic broken stone constitute the aggregate system of radiation shield concrete, which has a characteristic that one, benefit
With basaltic broken stone instead of traditional barite coarse aggregate, the apparent density of coarse aggregate is greatly reduced, coarse aggregate is avoided
There is " sinking " phenomenon separated with slurry because gravity is excessively concentrated in fresh concrete, while basalt has preferably
Ray shielding performance；Two, using by mechanical treatment copper ashes fine aggregate instead of traditional barite fine aggregate, natural sand or
Artificial sand fine aggregate；Relative to barite fine aggregate, copper ashes fine aggregate not only has a good ray shielding performance, and have compared with
Low apparent density, this is conducive to improve gravity concentration effect of the fine aggregate in fresh concrete；Relative to natural sand or people
The apparent density of work sand fine aggregate, copper ashes fine aggregate is slightly higher, but since dispersion degree is higher in concrete for fine aggregate, copper ashes
Slightly higher apparent density bring gravity concentration effect influence is smaller, and copper ashes fine aggregate has much higher than natural sand or artificial sand
The ray shielding performance of fine aggregate；Three, it on the basis of fully considering copper ashes fine aggregate and basaltic broken stone physicochemical characteristic, 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 makes aggregate body
System meets closestpacking principle, can further improve the homogeneity of concrete, concrete is avoided to isolate, and promotes concrete
Workability reduces bonding component dosage, saves material cost.
The present invention is prepared for a kind of ordinary portland cement base radiation shield concrete, which meets C30 concrete
Intensity requirement, no segregation phenomenon occur, and slump and divergence are good, and bulk density circle is in 2800-2900kgm3Between, meet anti-
Radiate requirement of the concrete to bulk density；Have the characteristics that working performance is excellent, shielding property is good, at low cost simultaneously, this is advantageous
In solving the problems such as traditional radiation shield concrete is easy isolation, homogenieity is poor, workability is bad.
Specific embodiment:
The present invention is further illustrated below by embodiment.
Embodiment 1:
A kind of ordinary portland cement base radiation shield concrete, is made of following material: 300 parts of cement, fine aggregate 1000
Part, 1300 parts of coarse aggregate, 18 parts of neutron-absorbing material, 0.5 part of water-reducing agent, 150 parts of water, based on parts by weight.
Wherein, cement is selected from 42.5 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance detection knot
Fruit is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min,
3 days flexural strengths 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
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, 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 ordinary portland cement base radiation shield concrete, the specific steps are as follows:
(1) raw material are accurately weighed by above-mentioned weight ratio, cement, fine aggregate, coarse aggregate, neutron-absorbing material is put into mixed
In solidifying soil blender；
(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
Ordinary portland cement base radiation shield concrete.
Embodiment 2:
A kind of ordinary portland cement base radiation shield concrete, is made of following material: 290 parts of cement, fine aggregate 1000
Part, 1300 parts of coarse aggregate, 18 parts of neutron-absorbing material, 0.5 part of water-reducing agent, 148 parts of water, based on parts by weight.
Wherein, cement is selected from 42.5 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance detection knot
Fruit is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min,
3 days flexural strengths 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
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, 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 ordinary portland cement base radiation shield concrete, the specific steps are as follows:
(1) raw material are accurately weighed by above-mentioned weight ratio, cement, fine aggregate, coarse aggregate, neutron-absorbing material is put into mixed
In solidifying soil blender；
(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
Ordinary portland cement base radiation shield concrete.
Embodiment 3:
A kind of ordinary portland cement base radiation shield concrete, is made of following material: 310 parts of cement, fine aggregate 1000
Part, 1300 parts of coarse aggregate, 18 parts of neutron-absorbing material, 0.5 part of water-reducing agent, 152 parts of water, based on parts by weight.
Wherein, cement is selected from 42.5 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance detection knot
Fruit is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min,
3 days flexural strengths 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
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, 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 ordinary portland cement base radiation shield concrete, the specific steps are as follows:
(1) raw material are accurately weighed by above-mentioned weight ratio, cement, fine aggregate, coarse aggregate, neutron-absorbing material is put into mixed
In solidifying soil blender；
(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
Ordinary portland cement base radiation shield concrete.
Embodiment 4:
A kind of ordinary portland cement base radiation shield concrete, is made of following material: 300 parts of cement, fine aggregate 1020
Part, 1280 parts of coarse aggregate, 18 parts of neutron-absorbing material, 0.5 part of water-reducing agent, 150 parts of water, based on parts by weight.
Wherein, cement is selected from 42.5 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance detection knot
Fruit is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min,
3 days flexural strengths 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
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, 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 ordinary portland cement base radiation shield concrete, the specific steps are as follows:
(1) raw material are accurately weighed by above-mentioned weight ratio, cement, fine aggregate, coarse aggregate, neutron-absorbing material is put into mixed
In solidifying soil blender；
(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
Ordinary portland cement base radiation shield concrete.
Embodiment 5:
A kind of ordinary portland cement base radiation shield concrete, is made of following material: 300 parts of cement, fine aggregate 1000
Part, 1300 parts of coarse aggregate, 18 parts of neutron-absorbing material, 0.5 part of water-reducing agent, 152 parts of water, based on parts by weight.
Wherein, cement is selected from 42.5 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance detection knot
Fruit is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min,
3 days flexural strengths 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
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, 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 ordinary portland cement base radiation shield concrete, the specific steps are as follows:
(1) raw material are accurately weighed by above-mentioned weight ratio, cement, fine aggregate, coarse aggregate, neutron-absorbing material is put into mixed
In solidifying soil blender；
(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
Ordinary portland cement base radiation shield concrete.
The ordinary portland cement base 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 ordinary portland cement base radiation shield concrete of Examples 1 to 5 preparation meets C30
The intensity requirement of concrete, concrete occur without segregation phenomenon, and the slump and divergence of concrete are good, concrete density
Boundary is in 2800-2900kgm3Between, 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 ordinary portland cement base radiation shield concrete, it is characterised in that: be made of following material: cement 280-320
Part, 900-1200 parts of fine aggregate, 1200-1500 parts of coarse aggregate, 10-20 parts of neutron-absorbing material, 0.4-0.6 parts of water-reducing agent, water
140-160 parts, based on parts by weight.
2. a kind of ordinary portland cement base radiation shield concrete according to claim 1, it is characterised in that: by following material
Material composition: 290-310 parts of cement, 1250-1400 parts of coarse aggregate, 15-20 parts of neutron-absorbing material, subtracts 950-1100 parts of fine aggregate
0.45-0.55 parts of aqua, 145-155 parts of water, based on parts by weight.
3. a kind of ordinary portland cement base radiation shield concrete according to claim 2, it is characterised in that: by following material
Material composition: 300 parts of cement, 1000 parts of fine aggregate, 1300 parts of coarse aggregate, 18 parts of neutron-absorbing material, 0.5 part of water-reducing agent, water 150
Part, based on parts by weight.
4. a kind of ordinary portland cement base radiation shield concrete according to claim 1 or 2 or 3, it is characterised in that: institute
It states cement and is selected from 42.5 cement of P.O, performance test results are as follows: normal consistency water requirement 26.7%, specific surface area
369m2·kg-1, presetting period 170min, final setting time 246min, 3 days flexural strength 6.0MPa, 28 days flexural strengths
8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa, SO3Content 2.03%, content of MgO 2.41%.
5. a kind of ordinary portland cement base radiation shield concrete according to claim 1 or 2 or 3, it is characterised in that: institute
It states fine aggregate and is selected from the granulated copper slag after mechanical treatment.
6. a kind of ordinary portland cement base radiation shield concrete according to claim 5, it is characterised in that: the machine
The mode of tool processing is as follows: first pulverizing granulated copper slag in cement testing ball mill, runing time 3min makes water quenching copper
Unsubstantial structure is by premature degradation in slag, while reducing its average particle size；Then the water quenching to being rolled by ball mill
Copper ashes is sieved, and the fine aggregate in the whole particles work present invention of particle size range 4.75mm or less is taken.
7. a kind of ordinary portland cement base radiation shield concrete according to claim 1 or 2 or 3, it is characterised in that: institute
It states coarse aggregate and 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.
8. a kind of ordinary portland cement base radiation shield concrete according to claim 1 or 2 or 3, it is characterised in that: institute
It states neutron adsorbent and is selected from colemanite mountain flour.
9. a kind of ordinary portland cement base radiation shield concrete according to claim 1 or 2 or 3, it is characterised in that: institute
It states water-reducing agent and 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 ordinary portland cement base radiation shield concrete according to claim 1, feature exist
In: specific step is as follows:
(1) raw material are accurately weighed by above-mentioned weight ratio, cement, fine aggregate, coarse aggregate, neutron-absorbing material is put into concrete
In blender；
(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 general
Logical Portland cement base radiation shield concrete.
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| CN113912341A (en) * | 2021-09-23 | 2022-01-11 | 中国核电工程有限公司 | Concrete material for neutron absorption and shielding and preparation method thereof |
| CN118637877A (en) * | 2024-08-15 | 2024-09-13 | 浙江大学 | Electromagnetic shielding concrete and preparation method thereof |
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