CN107434388B - A kind of spent fuel dry-type storage container concrete and preparation method thereof - Google Patents
A kind of spent fuel dry-type storage container concrete and preparation method thereof Download PDFInfo
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- CN107434388B CN107434388B CN201710610385.7A CN201710610385A CN107434388B CN 107434388 B CN107434388 B CN 107434388B CN 201710610385 A CN201710610385 A CN 201710610385A CN 107434388 B CN107434388 B CN 107434388B
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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
- C04B28/08—Slag 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
- 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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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F1/00—Shielding characterised by the composition of the materials
- G21F1/02—Selection of uniform shielding materials
- G21F1/04—Concretes; Other hydraulic hardening 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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- 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
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
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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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Abstract
The invention discloses a kind of spent fuel dry-type storage container concrete and preparation method thereof, the concrete includes cementitious material, fine aggregate, coarse aggregate, water, composite fibre and water-reducing agent；Preparation method includes that the coarse aggregate, fine aggregate and composite fibre are carried out the first stirring, obtain the first intermediate, the cementitious material is added in the first intermediate of Xiang Suoshu, and carries out the second stirring, obtains the second intermediate；The water-reducing agent and water are added into second intermediate, and carries out third time and stirs to get to the spent fuel dry-type storage container concrete.Spent fuel dry-type storage container concrete provided by the invention, while there is very strong radiation hardness, high temperature resistant and fire resistance, meet the requirement that spent fuel dry-type storage container prepares raw material to it.
Description
Technical field
This application involves nuclear industry fields, and in particular to a kind of spent fuel dry-type storage container concrete and its preparation
Method.
Background technique
With the fast development of global nuclear industry, is building and gradually increasing in fortune unit, the high radiation drawn off from reactor core
Property spentnuclear fuel integrated treatment problem become become increasingly conspicuous.According to the statistics of IAEA, up to the present global nuclear power plant has been produced
The spentnuclear fuel more than 350,000 tons is given birth to, it is contemplated that be up to 44.5 ten thousand tons to the year two thousand twenty whole world spentnuclear fuel amount.The place of spentnuclear fuel at present
Reason mode is divided into wet process storage and two kinds of dry storage, and wet process storage is pond storage, and China's spentnuclear fuel mainly takes wet process to store
Method of disposal is deposited, but existing storage pond is not able to satisfy increasingly increased spentnuclear fuel handle demand already close to saturation；Dry type
The hold-up vessel of storage is canister or concrete container, and outside provides radioactive shield by metal or concrete,
Inside cools down spentnuclear fuel by natural or mandatory flowing gas.Since spent fuel dry-type storage method of disposal has storage spirit
Active strong, operational management and monitoring be simple, without secondary nuke rubbish, maintenance cost is low, operation and and high safety advantage,
Use is greatly developed in the world.
It is minimum with the cost of concrete container in spent fuel dry-type storage method of disposal.Due to spent fuel dry-type storage
The synergistic effect of internal irradiation and high temperature, external corrosive erosion medium resistance and environmental activity is chronically at concrete, to coagulation
Soil comprehensive performance within design period is huge challenge steadily in the long term.And current spent fuel dry-type storage coagulation on the market
The comprehensive performance of soil is still to be improved, provides a kind of not only resistance to high irradiation, long term high temperature and external corrosion, but also be able to maintain itself mechanics
The stable concrete of performance has realistic meaning, economic benefit and the social benefit of highly significant.
Summary of the invention
The application solves existing skill by providing a kind of spent fuel dry-type storage container concrete and preparation method thereof
The spent fuel dry-type storage container problem low with concrete comprehensive performance in art, spent fuel dry-type storage container provided by the present application
With concrete not only resistance to high irradiation, long term high temperature and external corrosion, but also it is able to maintain itself stable mechanical property.
The object of the invention to solve the technical problems adopts the following technical solutions to realize.
A kind of spent fuel dry-type storage container concrete proposed according to the present invention, the concrete include gelling material
Material, fine aggregate, coarse aggregate, water, composite fibre and water-reducing agent；Wherein, the cementitious material is cement or cement and active powder
Mixture；The spent fuel dry-type storage container concrete the ratio of each component is: cement 150-360kg/m3, it is living
Property powder 0-330kg/m3, fine aggregate 450-640kg/m3, coarse aggregate 832-1024kg/m3, water 66-150kg/m3, composite fibre
Volume volume be the concrete total volume 0.3%-2.5%, the quality volume of water-reducing agent is that the concrete is total
The 1.5%-2.5% of quality.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
Preferably, a kind of spent fuel dry-type storage container concrete above-mentioned, wherein the property powder is silicon ash, mine
One of ground-slag or flyash are a variety of.
Preferably, a kind of spent fuel dry-type storage container concrete above-mentioned, wherein the cement be P.I. type,
P.II. one of type or P.S. type cement or a variety of, the strength grade of the cement not low 42.5.
Preferably, a kind of spent fuel dry-type storage container concrete above-mentioned, wherein the fine aggregate is common river
Sand, the fineness modulus of the fine aggregate are 2.60-3.20.
Preferably, a kind of spent fuel dry-type storage container concrete above-mentioned, wherein the coarse aggregate is granite
It is one or more in class, lime rock, basaltic rocks or boracic class rubble, the grain composition of the coarse aggregate be 5-10mm and
10-20mm gradation, and maximum particle diameter is no more than 20mm.
Preferably, a kind of spent fuel dry-type storage container concrete above-mentioned, wherein the composite fibre is that steel is fine
The mixture of peacekeeping polypropylene fibre；Wherein, the volume volume of the steel fibre is the 0.2 of the total volume of the concrete
~2.0%, the volume volume of the polypropylene fibre is the 0.1~0.5% of the total volume of the concrete；The steel is fine
The length of dimension is 12-14mm, tensile strength >=2850MPa；The length of the polypropylene fibre be 6-19mm, breaking strength >=
688MPa。
Preferably, a kind of spent fuel dry-type storage container concrete above-mentioned, wherein the water-reducing agent is poly- for liquid
The water-reducing rate of carboxylic acid water reducing agent, the water-reducing agent is not less than 30%.
Preferably, a kind of spent fuel dry-type storage container concrete above-mentioned, wherein the concrete is through 1*1015n
Neutron and 2.4*107After the gamma-ray irradiation of Gy, strength reduction < 10% reduces < 10% through 800 DEG C of Fired-strengths, leads
Hot coefficient is not less than 1.82W/ (m DEG C), and concrete density is greater than 2350kg/m3, compression strength is not less than 30MPa.
Also the following technical solution is employed for the object of the invention to solve the technical problems to realize.
The preparation method of a kind of spent fuel dry-type storage container concrete proposed according to the present invention, according to aforementioned any
Concrete described in, the preparation method is the following steps are included: the coarse aggregate, fine aggregate and composite fibre are carried out
First stirring, obtains the first intermediate；The cementitious material is added into first intermediate, and carries out second and stirs
It mixes, obtains the second intermediate；The water-reducing agent and water are added into second intermediate, and carries out third time stirring,
Obtain the spent fuel dry-type storage container concrete.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
Preferably, the preparation method of a kind of spent fuel dry-type storage container concrete above-mentioned, wherein described first
Stirring, the second stirring or third stirring carry out in forced mixer, described first stirring or second stirring
Mixing time is 30~60s, and the mixing time of the third stirring is 50~180s.
By above-mentioned technical proposal, a kind of spent fuel dry-type storage container concrete of the present invention and preparation method thereof, until
It has the advantage that less
1, spent fuel dry-type storage container provided by the invention has very strong radiation resistance with concrete.
Spentnuclear fuel, also known as rradiated nuclear fuel are to be subjected to overshoot irradiation, used nuclear fuel.It is wrapped in spent fuel
Containing a large amount of radioactive element, thus have radioactivity, if do not dealt carefully with, can seriously affect environment with contact it
People health.Therefore, there need to be very strong radiation resistance for the container of storage of spent fuel, environment and people could be protected
Harm of the class from spentnuclear fuel.
In the prior art, although describing the preparation method of the concrete with radiation resistance, due to applying ring
Border is different, and radiation source and radiation intensity are different, existing radiation hardness concrete can not directly apply to the present invention record it is weary
The preparation of fuel dry type hold-up vessel.Concrete provided by the invention, through neutron 1*1015N and gamma-rays 2.4*107Gy irradiation
Afterwards, strength reduction amount is less than 10%.As it can be seen that concrete provided by the invention, has very strong radiation resistance, is used as
The raw material of spent fuel dry-type storage container is prepared, and, the spent fuel dry-type storage container being prepared with the present invention, safety
Height meets the requirement of the safety to spent fuel dry-type storage container.
2, spent fuel dry-type storage container provided by the invention has very strong high temperature resistant, fire resistance with concrete.
The application environment of spent fuel dry-type storage container is more special, in application process, is chronically at internal high temperature
Fire conditions under environment and maximum conditions, this requires spent fuel dry-type storage containers need to select special gelling and strengthening material
Material, to promote the stability of concrete hydrating structure under high temperature even Fire Conditions.
Spent fuel dry-type storage container concrete provided by the invention has very strong high temperature resistant and fire resistance,
High temperature resistance is shown as, and can be maintained 40 hours under the conditions of 300 DEG C；Its fire resistance is shown as, through 800 DEG C of Fired-strengths
It reduces less than 10%, it is seen then that concrete provided by the invention, while there is very strong high temperature resistant and fire resistance, it can be used for making
For the raw material for preparing spent fuel dry-type storage container.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, with presently preferred embodiments of the present invention, detailed description is as follows below.
Specific embodiment
Present invention is further described in detail combined with specific embodiments below, but not as a limitation of the invention.
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Preferred embodiment, to a kind of spent fuel dry-type storage container concrete proposed according to the present invention and preparation method thereof, tool
Body embodiment, structure, feature and its effect, detailed description is as follows.In the following description, different " embodiment " or " real
Apply example " refer to be not necessarily the same embodiment.In addition, the special characteristic, structure or feature in one or more embodiments can be by appointing
What suitable form combination.
The present invention provides a kind of spent fuel dry-type storage container concrete.
As the hold-up vessel concrete of spentnuclear fuel, strong radiation resistance, high temperature resistant and resistance to fire need to be met simultaneously
Energy.In the prior art, although also describing the concrete with radiation or high temperature resistance, coagulation provided by the invention
The particularity of the application environment of soil, radiation source and radiation intensity difference, it is thus impossible to which existing concrete is directly applied to
The preparation of spent fuel dry-type storage container.
Concrete provided by the invention is provided simultaneously with very strong radiation hardness, high temperature resistant and resistance to fire performance, meet prepare it is weary
The requirement of the safety of fuel dry type hold-up vessel, the preparation suitable for spent fuel dry-type storage container.
Further, in a kind of spent fuel dry-type storage container concrete provided by the invention, the active powder is
One of silicon ash, slag powders or flyash are a variety of；Cement be one of P.I. type, P.II. type or P.S. type cement or
It is a variety of, the strength grade of the cement not low 42.5.
Active powder of the invention, the cementitious material together with cement, as concrete.The particle of active powder material
It is small, can be with filling concrete gap, and reacted with the hydrated product of cement, keep concrete finer and close.
The hydrated product of cement is the important sources of concrete strength, is also resistant to the important barrier of various erosions.For example,
Cement can promote the property retention ability of concrete at high temperature.But and not all cement can all meet the present invention to resistance to height
The needs of temperature, fire resistance.The hydrated product for P.I, P.II or P.S. type cement that the present invention selects and the fine and close aquation of formation
Structure can play resistance and shielding action to the invasion of corrosive media and radiating medium.
The property retention ability of concrete under high temperature and erosion environment can be improved in cement composition.The present invention further limits water
The type of mud and active powder is conducive to improve the gelatinization results to concrete, and further increases the intensity of concrete.
Further, in a kind of spent fuel dry-type storage container concrete provided by the invention, the fine aggregate is general
Logical river sand, the fineness modulus of the fine aggregate are 2.60-3.20.The coarse aggregate is granite, lime rock, basaltic rocks
Or it is one or more in boracic class rubble, the grain composition of the coarse aggregate is 5-10mm and 10-20mm gradation, and maximum particle diameter
No more than 20mm.
Relative to fine aggregate, the particle of coarse aggregate is larger, is the skeleton of concrete structure, therefore, coarse aggregate is alternatively referred to as
Aggregate.In low, moderate strength class concrete, the interface of coarse aggregate and cement slurry is weak area, and in high-strength concrete,
Coarse aggregate often becomes the region destroyed at first.
Concrete of the present invention belongs to high-strength concrete, therefore, it is necessary to select and design reasonable coarse aggregate system.The present invention
The coarse aggregate of selection be it is one or more in granite, lime rock, basaltic rocks or boracic class rubble, it is dry to meet spentnuclear fuel
Requirement of the formula hold-up vessel to intensity, it is preferred that the coarse aggregate is boron class rubble, alternatively, above-mentioned includes boron class rubble
Composition, boracic class stone can promote the radiation resistance of concrete.
Further, in a kind of spent fuel dry-type storage container concrete provided by the invention, composite fibre is that steel is fine
The mixture of peacekeeping polypropylene fibre；Wherein, the volume volume of the steel fibre is the 0.2 of the total volume of the concrete
~2.0%, the volume volume of the polypropylene fibre is the 0.1~0.5% of the total volume of the concrete；The steel is fine
The length of dimension is 12-14mm, tensile strength >=2850MPa；The length of the polypropylene fibre be 6-19mm, breaking strength >=
688MPa。
The anti-crack ability of concrete can be enhanced in fiber, reduces the crack generated by cement shrinkage and high temperature and fire
The channel of gas transport under the conditions of calamity, to promote the high temperature resistant property of concrete.Preferably, steel fibre can promote concrete
Intensity, toughness and shock resistance avoid spent fuel dry-type storage container that nuke rubbish leakage occurs in contingency；Polypropylene
The anti-spalling of concrete under fiber, can promote high temperature or Fire Conditions.It can be integrated using steel fibre and polyacrylic composition
Realize that toughness of the concrete under the high temperature and radiation parameter of irradiated fuel store, antiknock is split and shock resistance.
Embodiment 1
Present embodiments provide a kind of composition and preparation method thereof of spent fuel dry-type storage container concrete.
The composition of spent fuel dry-type storage container concrete provided in this embodiment is shown in Table 1.
Spent fuel dry-type storage container concrete provided in this embodiment the preparation method comprises the following steps: by the present embodiment use
Coarse aggregate, fine aggregate and composite fibre carry out the first stirring in forced mixer, and mixing time 60s is obtained in first
Mesosome；The cementitious material that the present embodiment uses is added into first intermediate, second is carried out in forced mixer
Stirring, mixing time 60s obtain the second intermediate；The diminishing that the present embodiment uses is added into second intermediate
Agent and water, carry out third stirring in forced mixer, and mixing time is 180s to get to spentnuclear fuel described in the present embodiment
Dry storage container concrete.
The physical property for the concrete that the present embodiment is prepared is shown in Table 2.
Embodiment 2
Present embodiments provide a kind of composition and preparation method thereof of spent fuel dry-type storage container concrete.
The composition of spent fuel dry-type storage container concrete provided in this embodiment is shown in Table 1.
The preparation method of spent fuel dry-type storage container concrete provided in this embodiment is same as Example 1 or does
Appropriate adjustment.
The physical property for the concrete that the present embodiment is prepared is shown in Table 2.
Embodiment 3
Present embodiments provide a kind of composition and preparation method thereof of spent fuel dry-type storage container concrete.
The composition of spent fuel dry-type storage container concrete provided in this embodiment is shown in Table 1.
The preparation method of spent fuel dry-type storage container concrete provided in this embodiment is same as Example 1 or does
Appropriate adjustment.
The physical property for the concrete that the present embodiment is prepared is shown in Table 2.
Embodiment 4
Present embodiments provide a kind of composition and preparation method thereof of spent fuel dry-type storage container concrete.
The composition of spent fuel dry-type storage container concrete provided in this embodiment is shown in Table 1.
The preparation method of spent fuel dry-type storage container concrete provided in this embodiment is same as Example 1 or does
Appropriate adjustment.
The physical property for the concrete that the present embodiment is prepared is shown in Table 2.
The component for the spent fuel dry-type storage container concrete that 1 embodiment 1-4 of table is provided
The physical property for the concrete that 2 embodiment 1-4 of table is prepared
It can be seen that the spent fuel dry-type storage container concrete that the present invention is prepared by the data of table 2, have
Very strong radiation hardness, high temperature resistant and fire resistance meet requirement of the spent fuel dry-type storage container to concrete performance.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, reference can be made to the related descriptions of other embodiments.It should be noted that embodiment 1-4 is practical case of the invention, this
The invention also may be implemented although not embodying in embodiment in the content for inventing the other components and component that provide.
It is understood that the correlated characteristic in above-mentioned apparatus can be referred to mutually.In addition, in above-described embodiment " the
One ", " second " etc. is and not represent the superiority and inferiority of each embodiment for distinguishing each embodiment.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention
Example can be practiced without these specific details.In some instances, well known structure and skill is not been shown in detail
Art, so as not to obscure the understanding of this specification.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of the various inventive aspects,
Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example or descriptions thereof.More precisely, as reflected in the following claims, inventive aspect is few
In all features of single embodiment disclosed above.Therefore, it then follows claims of specific embodiment are thus clearly
It is incorporated to the specific embodiment, the claims themselves are regarded as separate embodiments of the invention wherein each.
Those skilled in the art will understand that can be carried out adaptively to the component in the device in embodiment
Change and they are arranged in one or more devices unlike this embodiment.It can be the component combination in embodiment
At a component, and furthermore, they can be divided into multiple subassemblies.In addition at least some of such feature is mutual
It, can be using any combination to all features disclosed in this specification (including adjoint claim, abstract) except repulsion
And all components of so disclosed any device are combined.Unless expressly stated otherwise, this specification is (including adjoint
Claim, abstract) disclosed in each feature can be replaced with an alternative feature that provides the same, equivalent, or similar purpose.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included certain features rather than other feature, but the combination of the feature of different embodiments mean it is of the invention
Within the scope of and form different embodiments.For example, in the following claims, embodiment claimed is appointed
Meaning one of can in any combination mode come using.Various component embodiments of the invention can be implemented in hardware, or
It is implemented in a combination thereof.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and ability
Field technique personnel can be designed alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not
Component or component listed in the claims.Word "a" or "an" before component or component does not exclude the presence of multiple
Such component or component.The present invention can be realized by means of including the device of several different components.It is several listing
In the claim of component, several in these components, which can be through the same component item, to be embodied.Word first,
Second and the use of third etc. do not indicate any sequence.These words can be construed to title.
Heretofore described numberical range includes numerical value all within the scope of this, and including any two within the scope of this
The value range of numerical value composition.For example, " 0.3%-2.5% that the volume volume of composite fibre is the concrete total volume ",
This numberical range includes numerical value all between 0.3%-2.5%, and including any two numerical value within the scope of this (such as:
0.5%, 1.0%) value range (0.5%-1.0%) formed；The difference of the same index occurred in all embodiments of the invention
Numerical value, can in any combination, compositing range value.
Technical characteristic in the claims in the present invention and/or specification can be combined, and a combination thereof mode is not limited to weigh
The combination obtained in benefit requirement by adduction relationship.It is combined by the technical characteristic in claim and/or specification
The technical solution and protection scope of the present invention arrived.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, according to
According to technical spirit any simple modification, equivalent change and modification to the above embodiments of the invention, this hair is still fallen within
In the range of bright technical solution.
Claims (10)
1. a kind of spent fuel dry-type storage container concrete, which is characterized in that
The concrete includes cementitious material, fine aggregate, coarse aggregate, water, composite fibre and water-reducing agent；Wherein, the gelling
Material is the mixture of cement or cement and active powder；The cement is in P.I. type, P.II. type or P.S. type cement
It is one or more；The coarse aggregate is one or more in granite, lime rock, basaltic rocks or boracic class rubble；Institute
State the mixture that composite fibre is steel fibre and polypropylene fibre；
The spent fuel dry-type storage container concrete the ratio of each component is: cement 150-360kg/m3, active powder
0-330kg/m3, fine aggregate 450-640kg/m3, coarse aggregate 832-1024kg/m3, water 66-150kg/m3, the volume of composite fibre
Volume is the 0.3%-2.5% of the concrete total volume, and the quality volume of water-reducing agent is the concrete gross mass
1.5%-2.5%.
2. spent fuel dry-type storage container concrete according to claim 1, which is characterized in that
The active powder is one of silicon ash, slag powders or flyash or a variety of.
3. spent fuel dry-type storage container concrete according to claim 1, which is characterized in that
The strength grade of the cement not low 42.5.
4. spent fuel dry-type storage container concrete according to claim 1, which is characterized in that
The fine aggregate is common river sand, and the fineness modulus of the fine aggregate is 2.60-3.20.
5. spent fuel dry-type storage container concrete according to claim 1, which is characterized in that
The grain composition of the coarse aggregate is 5-10mm and 10-20mm gradation, and maximum particle diameter is no more than 20mm.
6. spent fuel dry-type storage container concrete according to claim 1, which is characterized in that
The volume volume of the steel fibre is the 0.2~2.0% of the total volume of the concrete, the polypropylene fibre
Volume volume be the concrete total volume 0.1~0.5%；
The length of the steel fibre is 12-14mm, tensile strength >=2850MPa；The length of the polypropylene fibre is 6-19mm,
Breaking strength >=688MPa.
7. spent fuel dry-type storage container concrete according to claim 1, which is characterized in that
The water-reducing agent is liquid poly carboxylic acid series water reducer, and the water-reducing rate of the water-reducing agent is not less than 30%.
8. spent fuel dry-type storage container concrete according to claim 1, which is characterized in that
The concrete is through 1*1015The neutron and 2.4*10 of n7After the gamma-ray irradiation of Gy, strength reduction < 10%, through 800 DEG C
Fired-strength reduces < 10%, and thermal coefficient is not less than 1.82W/ (m DEG C), and concrete density is greater than 2350kg/m3, resistance to compression
Intensity is not less than 30MPa.
9. a kind of preparation method of spent fuel dry-type storage container concrete, which is characterized in that
Spent fuel dry-type storage container concrete according to claim 1 to 8, preparation method include with
Lower step:
The coarse aggregate, fine aggregate and composite fibre are subjected to the first stirring, obtain the first intermediate；
The cementitious material is added into first intermediate, and carries out the second stirring, obtains the second intermediate；
The water-reducing agent and water are added into second intermediate, and carries out third time and stirs to get to described weary
Fuel dry type hold-up vessel concrete.
10. a kind of preparation method of spent fuel dry-type storage container concrete according to claim 9, feature exist
In:
First stirring, the second stirring or the third stirring carries out in forced mixer,
The mixing time of described first stirring or second stirring is 30~60s, when the stirring of the third stirring
Between be 50~180s.
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| CN108609920A (en) * | 2016-12-12 | 2018-10-02 | 深圳中广核工程设计有限公司 | High temperature resistant radiation resistance concrete |
| CN108059405B (en) * | 2017-12-06 | 2020-08-11 | 东南大学 | Nuclear power station containment concrete |
| CN108455913B (en) * | 2018-05-28 | 2020-11-10 | 兴宁市创强混凝土有限公司 | Radiation-proof concrete |
| CN111732383A (en) * | 2020-06-03 | 2020-10-02 | 江苏核电有限公司 | Spent fuel dry-type storage concrete and preparation method thereof |
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| CN101863641A (en) * | 2010-05-07 | 2010-10-20 | 武汉理工大学 | Radiation-resistant concrete based on environment protection type functional aggregates and preparation method thereof |
| CN101913828A (en) * | 2010-08-19 | 2010-12-15 | 武汉理工大学 | High anti-cracking large volume radiation-proof concrete and construction process thereof |
| CN104817304A (en) * | 2015-04-13 | 2015-08-05 | 北京工业大学 | Method for preparing anti-radiation concrete by utilization of boron-doped mine tailings |
| CN105801040A (en) * | 2014-12-29 | 2016-07-27 | 中国建筑材料科学研究总院 | Wear-resistant, antiknock and radiation-resistant concrete and preparation method thereof |
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| CN101863641A (en) * | 2010-05-07 | 2010-10-20 | 武汉理工大学 | Radiation-resistant concrete based on environment protection type functional aggregates and preparation method thereof |
| CN101913828A (en) * | 2010-08-19 | 2010-12-15 | 武汉理工大学 | High anti-cracking large volume radiation-proof concrete and construction process thereof |
| CN105801040A (en) * | 2014-12-29 | 2016-07-27 | 中国建筑材料科学研究总院 | Wear-resistant, antiknock and radiation-resistant concrete and preparation method thereof |
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