CN115010437A - Multi-density-grade pumping radiation-proof concrete - Google Patents
Multi-density-grade pumping radiation-proof concrete Download PDFInfo
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- CN115010437A CN115010437A CN202210755344.8A CN202210755344A CN115010437A CN 115010437 A CN115010437 A CN 115010437A CN 202210755344 A CN202210755344 A CN 202210755344A CN 115010437 A CN115010437 A CN 115010437A
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- 239000004567 concrete Substances 0.000 title claims abstract description 64
- 238000005086 pumping Methods 0.000 title claims abstract description 24
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 78
- 239000010428 baryte Substances 0.000 claims abstract description 63
- 229910052601 baryte Inorganic materials 0.000 claims abstract description 63
- 239000000654 additive Substances 0.000 claims abstract description 37
- 239000000843 powder Substances 0.000 claims abstract description 35
- 230000000996 additive effect Effects 0.000 claims abstract description 33
- 239000010881 fly ash Substances 0.000 claims abstract description 20
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000004576 sand Substances 0.000 claims abstract description 16
- 239000004568 cement Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 10
- 230000005855 radiation Effects 0.000 claims description 21
- 239000004575 stone Substances 0.000 claims description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 4
- 239000010445 mica Substances 0.000 claims description 4
- 229910052618 mica group Inorganic materials 0.000 claims description 4
- 239000011398 Portland cement Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical group [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 239000002689 soil Substances 0.000 claims description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 3
- 230000004907 flux Effects 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 16
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 11
- 229910052642 spodumene Inorganic materials 0.000 description 11
- 239000000203 mixture Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 7
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 5
- 229910021538 borax Inorganic materials 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 4
- 239000004328 sodium tetraborate Substances 0.000 description 4
- 235000010339 sodium tetraborate Nutrition 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000005260 alpha ray Effects 0.000 description 1
- 230000003471 anti-radiation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005250 beta ray Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- SFJBWZNTPHYOEH-UHFFFAOYSA-N cobalt Chemical group [Co].[Co].[Co] SFJBWZNTPHYOEH-UHFFFAOYSA-N 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/045—Alkali-metal containing silicates, e.g. petalite
-
- 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
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/20—Mica; Vermiculite
-
- 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
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/26—Carbonates
-
- 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
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/34—Metals, e.g. ferro-silicon
-
- 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
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/36—Inorganic materials not provided for in groups C04B14/022 and C04B14/04 - C04B14/34
- C04B14/368—Baryte
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
-
- 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
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a multi-density-grade pumping radiation-proof concrete which comprises the following components in parts by weight: 250 portions of cement 200-containing materials, 50-70 portions of fly ash, 150 portions of barite powder 100-containing materials, 150 portions of heavy metal powder 100-containing materials, 10-20 portions of radiation-proof additive, 1650 portions of barite gravel 1600-containing materials, 1450 portions of barite sand 1400-containing materials, 170 portions of water 160-containing materials and 5.0-5.5 portions of admixture; according to the invention, the barite is used as the aggregate, the fly ash is added to ensure that the workability is better, the requirement of pumping construction can be met, the heavy metal powder is added, the compressive strength of the radiation-proof concrete can be enhanced, and the requirements of the radiation-proof concrete with different apparent densities can be met; the lithium-based radiation-proof additive is added, so that the compactness of the concrete can be improved, the penetrating strength of neutron flux can be effectively weakened, and the shielding capability of the radiation-proof concrete can be obviously improved.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to multi-density-grade pumping radiation-proof concrete.
Background
The radiation-proof concrete is also called shielding concrete and radiation-proof concrete, can effectively shield radiation of alpha, beta, gamma rays, neutron rays and the like, and is a commonly used protective material for atomic energy reactors, particle accelerators and other radioactive source devices.
The radiation-proof concrete has low alpha and beta ray penetration capacity, mainly shields gamma rays and neutron rays, is generally prepared by taking barite with high apparent density and various iron ores as aggregates, and the barite concrete takes the barite and the barite sand as coarse and fine aggregates to improve the ray shielding capacity by increasing the apparent density and the compactness, but the selectable barite has limited apparent density range, is difficult to meet the requirements of engineering design and has limited radiation resistance.
The existing radiation-proof concrete technology utilizes boron-containing element additives as concrete to improve radiation-proof performance, and boron-based additives generate electromagnetic shielding effect through boron groups to achieve the purpose of reducing radiation, but the electromagnetic shielding performance of the boron-based additives is limited, and the delayed coagulation phenomenon of the concrete can be caused by partial boron-based additives.
Disclosure of Invention
The invention aims to provide the multiple-density-grade barite radiation-proof concrete, so that the apparent density of the multiple-density-grade barite radiation-proof concrete can meet engineering requirements and has higher radiation resistance.
In order to achieve the purpose, the technical scheme is as follows:
the multi-density-grade pumping radiation-proof concrete comprises the following components in parts by weight:
250 portions of cement 200-containing materials, 50-70 portions of fly ash, 150 portions of barite powder 100-containing materials, 150 portions of heavy metal powder 100-containing materials, 10-20 portions of radiation-proof additive, 1650 portions of barite gravel 1600-containing materials, 1450 portions of barite sand 1400-containing materials, 170 portions of water 160-containing materials and 5.0-5.5 portions of admixture.
In the scheme, the apparent density of the barite crushed stone is 4200-4500kg/m 3 (ii) a The large barite-small barite-large-diameter rock breaking rock comprises large barite and small barite, wherein the grain diameter of the large barite is 5-20mm continuous broken stone, the small barite is 5-10mm continuous broken stone, and the dosage ratio of the large barite to the small barite is (1.2-1.6): 1.
in the scheme, the fineness of the barite sand is 2.5-3.0.
In the above scheme, the apparent density of the barite powder is 7000-plus 8000kg/m 3 The specific surface area is 3500-4000cm 2 /g。
In the scheme, the heavy metal powder is cobalt powder, nickel powder or iron powder and the like, and the granularity is 0.1-0.5 mm.
In the scheme, the radiation-proof additive is lithium mica powder, spodumene powder or lithium carbonate powder, and the particle size of the radiation-proof additive is 10-15 microns.
In the scheme, the cement is Huaxin P.O42.5 ordinary portland cement.
In the scheme, the fly ash soil is I-grade fly ash.
In the scheme, the additive is a polycarboxylic acid high-efficiency water reducing agent.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the barite is used as the aggregate, the fly ash is added to ensure that the workability is better, the requirement of pumping construction can be met, the heavy metal powder is added, the compressive strength of the radiation-proof concrete can be enhanced, and the requirements of the radiation-proof concrete with different apparent densities can be met; the lithium-based radiation-proof additive is added, so that the compactness of the concrete can be improved, the penetrating strength of neutron flux can be effectively weakened, and the shielding capability of the radiation-proof concrete can be obviously improved.
Aiming at a barite-based radiation-proof concrete system, a lithium-based radiation-proof additive (lithium mica powder, spodumene powder or lithium carbonate powder) is further introduced on the basis of adding heavy metal powder, and the heavy element and the light element (lithium) are combined, so that the threshold value of neutron flux penetration can be effectively reduced, the shielding capability of the radiation-proof concrete is remarkably improved, and the mechanical property of the concrete can be enhanced. In addition, the additive containing lithium base is introduced into the concrete, so that the growth of the expansion phase-containing substances in the hydration products can be inhibited, the compactness of the concrete is improved, and the external electron penetration is weakened.
Detailed Description
The following examples further illustrate the technical solutions of the present invention, but should not be construed as limiting the scope of the present invention.
In the specific implementation mode, the multi-density-grade pumping radiation-proof concrete comprises the following components in parts by weight:
200-250 parts of cement, 50-70 parts of fly ash, 100-150 parts of barite powder, 100-150 parts of heavy metal powder, 10-20 parts of anti-radiation additive, 1600-1650 parts of barite gravel, 1400-1450 parts of barite sand, 160-170 parts of water and 5.0-5.5 parts of admixture.
Specifically, the adopted cement is Huaxin P.O42.5 ordinary portland cement, and the 28d strength is 54.5 MPa.
Specifically, the fly ash is Turunxin I-grade fly ash, the residue on a 45-micron square-hole sieve is 8.2%, and the activity index is 84%.
Specifically, the heavy metal powder is cobalt, nickel or iron powder, and the particle size of the heavy metal powder is 0.6 mm.
Specifically, the barite crushed stone is Daizhou barite, and the apparent density of the crushed stone is 4300kg/m 3 The large barite is 5-20mm continuous graded crushed stone, the crushing value is 15%, the mud content is 0.5%, the needle-shaped is 1%, the small barite is 5-10mm continuous graded crushed stone, the crushing value is 12%, and the mud content is0.7 percent and 1.5 percent of needle sheet shape.
Specifically, the barite sand has a particle size of 0.15mm-4.75mm and a fineness of 2.6.
Specifically, the apparent density of the barite powder is 7640kg/m 3 The specific surface area is 3896kg/m 3 。
Specifically, the radiation-proof additive is lithium mica powder, spodumene powder or lithium carbonate powder, and the particle size of the radiation-proof additive is 12 micrometers.
Specifically, the additive is a polycarboxylic acid high-efficiency water reducing agent, and the manufacturer is new material science and technology company, which is built in the West of China, and has the model of PC-12%.
Example 1
The preparation method of the multi-density-grade pumping radiation-proof concrete comprises the following steps:
1) weighing raw materials; the weight parts of the raw materials are as follows: 200 parts of cement, 50 parts of fly ash, 100 parts of barite powder, 100 parts of heavy metal powder (iron powder), 10 parts of a radiation-proof additive (spodumene powder), 1620 parts of barite crushed stone, 1400 parts of barite sand, 160 parts of water and 5.0 parts of an additive;
2) adding barite sand, barite crushed stone (mass ratio of small barite to large barite is 6:25) and heavy metal powder into a stirrer together, and stirring for 2 min; then adding barite powder, cement and fly ash, stirring for 3min, and mixing uniformly; adding water and additive, stirring for 5min, and mixing; finally, adding the radiation-proof additive and continuously stirring for 2min to obtain a radiation-proof concrete mixture;
3) and injecting the obtained mixture into a steel mould, placing the steel mould on a vibration table to vibrate and compact, placing the steel mould in a room for curing for 1d, then removing the mould, and curing for 28d in a standard curing room with the temperature of 20 ℃ and the relative humidity of 90%.
Example 2
The preparation method of the multi-density-grade pumping radiation-proof concrete comprises the following steps:
1) weighing raw materials; the weight parts of the raw materials are as follows: 220 parts of cement, 60 parts of fly ash, 120 parts of barite powder, 110 parts of heavy metal powder (iron powder), 15 parts of a radiation-proof additive (spodumene powder), 1630 parts of barite crushed stone, 1420 parts of barite sand, 165 parts of water and 5.2 parts of an additive;
2) barite sand, barite crushed stone (small barite: adding the large barite at a ratio of 6:25) and the heavy metal powder into a stirrer together and stirring for 2 min; then adding barite powder, cement and fly ash, stirring for 3min, and mixing uniformly; adding water and additive, stirring for 5min, and mixing; finally, adding the radiation-proof additive and continuously stirring for 2min to obtain a radiation-proof concrete mixture;
3) and injecting the obtained mixture into a steel mould, placing the steel mould on a vibration table to vibrate and compact, placing the steel mould in a room for curing for 1d, then removing the mould, and curing for 28d in a standard curing room with the temperature of 20 ℃ and the relative humidity of 90%.
Example 3
The preparation method of the multi-density-grade pumping radiation-proof concrete comprises the following steps:
1) weighing raw materials; the weight parts of the raw materials are as follows: 220 parts of cement, 70 parts of fly ash, 130 parts of barite powder, 130 parts of heavy metal powder (iron powder), 18 parts of radiation-proof additive (spodumene powder), 1635 parts of barite crushed stone, 1435 parts of barite sand, 165 parts of water and 5.3 parts of additive;
2) barite sand, barite crushed stone (small barite: adding the large barite at a ratio of 6:25) and the heavy metal powder into a stirrer together and stirring for 2 min; then adding barite powder, cement and fly ash, stirring for 3min, and mixing uniformly; adding water and additive, stirring for 5min, and mixing; finally, adding the radiation-proof additive and continuously stirring for 2min to obtain a radiation-proof concrete mixture;
3) and injecting the obtained mixture into a steel mould, placing the steel mould on a vibration table to vibrate and compact, placing the steel mould in a room for curing for 1d, then removing the mould, and curing for 28d in a standard curing room with the temperature of 20 ℃ and the relative humidity of 90%.
Example 4
The preparation method of the multi-density-grade pumping radiation-proof concrete comprises the following steps:
1) weighing raw materials; the weight parts of the raw materials are as follows: 220 parts of cement, 60 parts of fly ash, 120 parts of barite powder, 150 parts of heavy metal powder (iron powder), 20 parts of a radiation-proof additive (spodumene powder), 1650 parts of barite crushed stone, 1450 parts of barite sand, 170 parts of water and 5.5 parts of an additive;
2) barite sand, barite crushed stone (small barite: adding the large barite at a ratio of 6:25) and the heavy metal powder into a stirrer together and stirring for 2 min; then adding barite powder, cement and fly ash, stirring for 3min, and mixing uniformly; adding water and additive, stirring for 5min, and mixing; finally, adding the radiation-proof additive and continuously stirring for 2min to obtain a radiation-proof concrete mixture;
3) and injecting the obtained mixture into a steel mould, placing the steel mould on a vibration table to vibrate and compact, placing the steel mould in a room for curing for 1d, then removing the mould, and curing for 28d in a standard curing room with the temperature of 20 ℃ and the relative humidity of 90%.
Comparative example 1
This comparative example differs from example 1 in that no iron powder was added
The preparation method of the multi-density-grade pumping radiation-proof concrete is the same as that of the concrete in the example 1, except that iron powder is not added.
Comparative example 2
The preparation method of the multi-density-grade pumping radiation-proof concrete is substantially the same as that of the concrete in the embodiment 1, and the difference is that borax in equal proportion is used for replacing spodumene powder.
Comparative example 3
The preparation method of the multi-density-grade pumping radiation-proof concrete is substantially the same as that of the concrete in the embodiment 1, except that borax with equal mass fraction is used for replacing spodumene powder, and iron powder is not added.
The apparent density, the working performance and the compressive strength of the radiation-proof concrete obtained in the above examples and comparative examples are tested, meanwhile, the concrete of the examples 1 to 4 and the comparative examples 1 to 3 is made into a wall with the thickness of 250mm, a 120Sv/h radiation source is placed on one side of the wall, then a radiation monitor is adopted on the other side of the wall to detect radiation, and the specific detection data indexes are shown in the following table:
the slump of the concrete obtained in the embodiments 1-4 and the comparative example after 2 hours of leaving the machine is larger than 160mm, the workability is good, and long-distance pumping construction (more than 100m) can be realized by using pumping equipment of common concrete.
Comparing example 1 with comparative example 1, the apparent density of concrete can be increased by using iron powder, and the compressive strength and the radiation resistance of concrete can also be improved.
In comparison with the above-mentioned examples 2 and 4, the addition of the heavy metal powder and the radiation-proof additive is increased, so that the radiation-proof performance of the concrete can be obviously improved, and the radiation-proof capability of the concrete without the iron powder in the comparative example 1 is poor.
Comparing the above example 1 with the comparative example 2, it can be seen that after the borax replaces spodumene powder, the concrete slump and the concrete expansion degree are reduced to a certain extent, and the radiation resistance and the 28d compressive strength are also reduced to a certain extent.
Comparing the above example 1 with the comparative examples 2 and 3, it can be seen that the iron powder has a significant effect on the radiation resistance of concrete, and the spodumene powder has better radiation resistance and enhanced performance in concrete than borax.
The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is not limited by the scope of the claims.
Claims (9)
1. The multi-density-grade pumping radiation-proof concrete is characterized by comprising the following components in parts by weight:
250 portions of cement 200-containing materials, 50-70 portions of fly ash, 150 portions of barite powder 100-containing materials, 150 portions of heavy metal powder 100-containing materials, 10-20 portions of radiation-proof additive, 1650 portions of barite gravel 1600-containing materials, 1450 portions of barite sand 1400-containing materials, 170 portions of water 160-containing materials and 5.0-5.5 portions of admixture.
2. The multi-density pumping radiation protection concrete as claimed in claim 1, wherein the apparent density of said barite crushed stone is 4200-4500kg/m 3 (ii) a Including large barite and smallThe barite, the grain diameter of the large barite is 5-20mm continuous broken stone, the small barite is 5-10mm continuous broken stone, and the dosage ratio of the large barite to the small barite is (1.2-1.6): 1.
3. the multi-density grade pump radiation protection concrete of claim 1, wherein the fineness of the barite sand is 2.5-3.0.
4. The multi-density-level pumping radiation protection concrete as claimed in claim 1, characterized in that the apparent density of the barite powder is 7000-8000kg/m 3 The specific surface area is 3500-4000cm 2 /g。
5. The multi-density-grade pumping radiation protection concrete as claimed in claim 1, wherein the heavy metal powder is cobalt powder, nickel powder or iron powder, and the particle size is 0.1-0.5 mm.
6. The multi-density-grade pumping radiation protection concrete according to claim 1, wherein the radiation protection additive is lithium mica powder, lithium talcum powder or lithium carbonate powder, and the particle size of the radiation protection additive is 10-15 μm.
7. The multi-density grade pumping radiation protection concrete of claim 1, wherein the cement is Huaxin P.O42.5 Portland cement.
8. The multi-density grade pump radiation protection concrete of claim 1, wherein said fly ash soil is class i fly ash.
9. The multi-density-grade pumping radiation protection concrete as claimed in claim 1, wherein the admixture is a polycarboxylic acid high-efficiency water reducing agent.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108484057A (en) * | 2018-06-01 | 2018-09-04 | 中建商品混凝土有限公司 | A kind of large volume cracking resistance radiation shield concrete and preparation method thereof based on scrap glass |
| EP3432315A1 (en) * | 2017-07-20 | 2019-01-23 | Theodor Pieper GmbH & Co. KG | Concrete composition and method for producing same |
| CN109574608A (en) * | 2019-01-30 | 2019-04-05 | 北京新时代寰宇科技发展有限公司 | A kind of radiation shield concrete and preparation method thereof can be reduced secondary radiation |
| CN114014614A (en) * | 2021-12-17 | 2022-02-08 | 中建商品混凝土有限公司 | Radiation-proof concrete and preparation method thereof |
-
2022
- 2022-06-29 CN CN202210755344.8A patent/CN115010437A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3432315A1 (en) * | 2017-07-20 | 2019-01-23 | Theodor Pieper GmbH & Co. KG | Concrete composition and method for producing same |
| 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 |
| CN108484057A (en) * | 2018-06-01 | 2018-09-04 | 中建商品混凝土有限公司 | A kind of large volume cracking resistance radiation shield concrete and preparation method thereof based on scrap glass |
| CN109574608A (en) * | 2019-01-30 | 2019-04-05 | 北京新时代寰宇科技发展有限公司 | A kind of radiation shield concrete and preparation method thereof can be reduced secondary radiation |
| CN114014614A (en) * | 2021-12-17 | 2022-02-08 | 中建商品混凝土有限公司 | Radiation-proof concrete and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张巨松等: "建筑用化学品制造技术", 哈尔滨工业大学出版社, pages: 109 * |
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