CN103864372A - Hybrid fiber reinforced concrete high integrity container for disposal of radioactive materials and preparation method thereof - Google Patents
Hybrid fiber reinforced concrete high integrity container for disposal of radioactive materials and preparation method thereof Download PDFInfo
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- CN103864372A CN103864372A CN201410111158.6A CN201410111158A CN103864372A CN 103864372 A CN103864372 A CN 103864372A CN 201410111158 A CN201410111158 A CN 201410111158A CN 103864372 A CN103864372 A CN 103864372A
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- 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
Abstract
The present invention discloses a hybrid fiber reinforced concrete high integrity container for the disposal of radioactive materials and a preparation method thereof, wherein the container comprises a main body formed by pouring concrete doped with water reducer and hybrid fiber and a cover body; the concrete is composed of gel material, aggregates and water. Wherein the density of concrete is calculated by 2400kg/m<3>, the gel material accounts for 450-600kg of per cubic meter of concrete; the gel material is prepared from the following raw materials by weight percent: 46 to 76% of cement, 2.7 to 7.7% of silica fume, 22 to 39% of slag, 2.7 to 7.7% of ash; the mass ratio of water to the gel material is (0.25-0.35):1; aggregates comprise sand and stones, the sand ratio is 35-43%; the mixing content of water reducer accounts for 1.0 to 2.0% of the total mass of gel material; the mixing content of hybrid fiber accounts for 0.5 to 1.5 % of the total volume of the concrete. The surface disposal of nuclear waste is achieved by the device disclosed by the invention. Costs are reduced.
Description
Technical field
The present invention relates to nuclear waste disposal technical field, specifically a kind of disposal of radioactive substances high overall container of concrete reinforced by assorted fiber and preparation method thereof that the radioactive substances such as nuke rubbish is carried out to ground or semi-underground processing of realizing.
Background technology
Active development nuclear energy and propelling Nuclear power project are important policies of China's energy construction.During " 12 ", China's Nuclear power project has entered a high-speed development period, will have every year 3～5 newly-started construction of Nuclear power plants.Concerning China's Construction of Nuclear Electricity, the disposal technology of nuke rubbish is most crucial.The radioactive substance meeting serious environment pollutions such as nuke rubbish, not only cause irremediable infringement to environment as dealt with improperly, also can cause damage to the mankind and various biology.At present, the processing of the radioactive substances such as nuke rubbish is adopted to dark geological disposal mode mostly.By the damage of avoiding it to cause environment the method for disposal of radwaste permanent sequestration.The nearlyest hundred meters of dark geological disposal mode treatment depths, this disposal options cost is high.Will greatly reduce costs if adopt ground or semi-underground mode to process radioactive substance.But this must guarantee the container of storage of radioactive material have corrosion-resistant, intensity is high and can isolate the higher requirements such as ray, to can guarantee that radioactive substance decays to complete before harmless.And the container of existing storage of radioactive material all can not reach above-mentioned requirements.
The often principle based on " multibarrier " of traditional nuke rubbish splendid attire and disposal technology, utilize steel construction or skeleton construction and composite structure thereof as " cushioning material ", the radioactivity of nuke rubbish to be shielded, then utilize buried mode to dispose, therefore there is the critical defect that disposal unit is excessive, cannot carry out security monitoring in this technique, and traditional nuke rubbish concrete or fiber reinforced concrete container exist the defects such as toughness deficiency, service life be short.High integrity container technology can directly be placed on the nuke rubbish after solidifying in container, safe storage 300 years under the envrionment conditionss such as dry wet, cold and hot, brine corrosion, impact; This technology can be simplified multibarrier, under landfill, saves a large amount of land resources.
Because problems and defect that the above-mentioned existing container of depositing radioactive substance in use exists, the inventor and studied and innovate, finally invent high overall container of disposal of radioactive substances concrete reinforced by assorted fiber of a kind of novelty and preparation method thereof, make its treatment technology realize update, and more there is practicality.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides the high overall container of a kind of disposal of radioactive substances concrete reinforced by assorted fiber, have corrosion-resistant, intensity is high, the feature of long service life, realize earth's surface or the semi-underground processing of the radioactive substances such as nuke rubbish, greatly reduced processing costs.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
The high overall container of concrete reinforced by assorted fiber for disposal of radioactive substances, comprises by the concrete placement that is mixed with water reducer and assorted fibre and forms main body and lid, concrete is made up of gelatinous material, aggregate and water, it is characterized in that, wherein
Concrete density is pressed 2400kg/m
3calculate, in every cubic meter of concrete, gelling material is 450～550kg;
Gelling material is made up of by mass percentage following raw material: cement 45～70%, silicon ash 2.0～7.0%, slag 25～40%, flyash 3.0～8.0%;
The mass ratio (water-cement ratio) of water and gelling material is 0.25～0.35:1;
Aggregate is made up of sand and stone, and sand coarse aggregate ratio (sand accounts for the mass percent of aggregate) is 35～43%;
The volume of water reducer is 1.0～2.0% of gelling material total mass;
The volume of assorted fibre is 0.5～1.5% of concrete cumulative volume.
As preferably, described gelling material is made up of by mass percentage following raw material: cement 51～69%, silicon ash 3～6%, slag 30～35%, flyash 5～7%.
As preferably, the grain composition of described stone is 5mm～10mm and 10mm～20mm bis-gratings, and wherein maximum particle diameter is no more than 20mm.
As preferably, the fineness modulus of described sand is 2.60.
As preferably, described cement adopts P.I type cement, and strength mark is not low by 42.5.
As preferably, described water reducer is liquid polycarboxylic acid water reducing agent, and water-reducing rate is 30%,
As preferably, described sand coarse aggregate ratio is 35%.
As preferably, described assorted fibre is mixed by steel fiber, carbon fiber and amorphous alloy fiber, and wherein steel fiber diameter is 0.18mm～0.23mm, and length is 12mm～14mm, and volume is 0.3%～1.3% of concrete cumulative volume; Carbon fiber diameter is 7 microns of μ m, and length is 5～8mm, and volume is 0.05%～0.1% of concrete cumulative volume; Amorphous alloy fiber is 5～20mm, and width is 1mm, and thickness is 24mm, and volume is 0.05%～0.1% of concrete cumulative volume.。
Another object of the present invention is for the preparation method of the high overall container of a kind of above-mentioned disposal of radioactive substances concrete reinforced by assorted fiber is provided, corrosion-resistant to make, intensity is high, the storer of depositing radioactive substance of long service life.The technical scheme that realizes this object is as follows:
The preparation method of the high overall container of concrete reinforced by assorted fiber for disposal of radioactive substances, comprises the steps:
A. above-mentioned arbitrary described disposal of radioactive substances is carried in the forming room that is put in 20 degree the day before yesterday with the raw material of the high overall container of concrete reinforced by assorted fiber;
B. the program that feeds intake is thrown in hopper by the order of stone one assorted fibre one sand one gelling material, first dry mixing 1～2min in stirrer, then the wet-mixing 3min that adds water, and total churning time is controlled in 6min, then builds moulding;
C. under 20 ℃ ± 2 ℃ of temperature, more than relative humidity 95%RH condition, carry out maintenance.
Compared with prior art, beneficial effect of the present invention is:
Disposal of radioactive substances of the present invention has all guaranteed it on earth's surface with concrete reinforced by assorted fiber high overall container or safety performance when the radioactive substance such as semi-underground processing nuke rubbish at aspects such as physical properties, physical strength, radiation resistance, anti-freezing property, chemical stabilities.Disposal of radioactive substances of the present invention has guaranteed that with concrete reinforced by assorted fiber high overall container radioactive substance, in the integrity decaying to before harmless, realized earth's surface or the semi-underground processing of the radioactive substances such as nuke rubbish, reaches saving processing costs.The use of assorted fibre can make full use of the advantage of different types of fiber, if steel fiber is to concrete high toughening effect, the resistance to cleavage of carbon fiber and the corrosion resistance of amorphous alloy fiber, thereby make concrete in the excellent properties of maintenance own, also attracted the excellent characteristic of all multifilaments.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, but not as a limitation of the invention.
Embodiment mono-:
The high overall container of concrete reinforced by assorted fiber for disposal of radioactive substances, the concrete placement being made up of following raw material forms, wherein cement 360kg, silicon ash 45kg, slag 165kg, flyash 30kg, water 168kg, sand 574kg, stone 1067kg, steel fiber 39kg, carbon fiber 0.85kg, amorphous alloy fiber 7.1kg, water reducer 12kg.Wherein assorted fibre can according to determine mix volume and known density conversion obtains corresponding quality.
Above-mentioned arbitrary described disposal of radioactive substances is carried in the forming room that is put in 20 ℃ the day before yesterday with the raw material of the high overall container of concrete reinforced by assorted fiber; The program that feeds intake is thrown in hopper by the order of stone one assorted fibre one sand one gelling material, first dry mixing 1～2min in stirrer, then the wet-mixing 3min that adds water, and total churning time is controlled in 6min, then builds moulding; Under 20 ℃ ± 2 ℃ of temperature, more than relative humidity 95%RH condition, carry out maintenance.
The grain composition of stone is 5mm～10mm and 10mm～20mm bis-gratings, and wherein maximum particle diameter is no more than 20mm, and other index meets the requirement of JGJ52-2006.
Sand adopts common yellow ground, and fineness modulus is 2.60, and other index meets the requirement of JGJ52-2006.
Cement adopts P.I type cement, and strength mark is not low by 42.5.
Slag is S95 level, meets the requirement of GB/T18046-2008.
Silicon ash meets the requirement of GB/T18736-2002.
Flyash is first level flour coal ash, meets the requirement of GB/T1596-2005.
Hydromining ordinary tap water, other index need meet the requirement of JGJ63-2006.
Water reducer is liquid polycarboxylic acid water reducing agent, and water-reducing rate is 30%.
Assorted fibre belongs to respectively the compound use of carbon steel fiber, amorphous alloy fiber and carbon fiber from material.
Embodiment bis-:
The different variations that are raw material of the present embodiment and embodiment mono-.Wherein cement 330kg, silicon ash 20kg, slag 200kg, flyash 50kg, water 150kg, sand 574kg, stone 1067kg, steel fiber 78kg, carbon fiber 0.85kg, amorphous alloy fiber 7.1kg, water reducer 13.8kg.
Embodiment tri-:
The different variations that are raw material of the present embodiment and embodiment mono-.Wherein 310kg, silicon ash 30kg, slag 190kg, flyash 40kg, water 145kg, sand 574kg, stone 1067kg, steel fiber 101.4kg, carbon fiber 1.7kg, amorphous alloy fiber 7.1kg, water reducer 15kg.
The test result of the properties of above-described embodiment sees the following form 1.The index request of table 1 storer of the present invention and test result
As can be seen from Table 1, properties of the present invention all meets the standard realizing nuke rubbish soil surface treatment.Adopt storer of the present invention can realize soil surface treatment or the semi-underground processing to radioactive substances such as nuke rubbish, greatly reduce processing costs.
Above embodiment is only exemplary embodiment of the present invention, is not used in restriction the present invention, and protection scope of the present invention is defined by the claims.Those skilled in the art can, in essence of the present invention and protection domain, make various modifications or be equal to replacement the present invention, this modification or be equal to replacement and also should be considered as dropping in protection scope of the present invention.
Claims (9)
1. the high overall container of concrete reinforced by assorted fiber for disposal of radioactive substances, comprises by the concrete placement that is mixed with water reducer and assorted fibre and forms main body and lid, and concrete is made up of gelatinous material, aggregate and water, it is characterized in that, wherein
Concrete density is pressed 2400kg/m
3calculate, in every cubic meter of concrete, gelling material is 450～550kg;
Gelling material is made up of by mass percentage following raw material: cement 46～76%, silicon ash 2.7～7.7%, slag 22～39%, flyash 2.7～7.7%;
The mass ratio of water and gelling material is 0.25～0.35:1;
Aggregate is made up of sand and stone, and sand coarse aggregate ratio is 35～43%;
The volume of water reducer is 1.0～2.0% of gelling material total mass;
Assorted fibre cumulative volume volume is 0.5～1.5% of concrete cumulative volume.
2. the high overall container of concrete reinforced by assorted fiber for disposal of radioactive substances according to claim 1, it is characterized in that, described gelling material is made up of by mass percentage following raw material: cement 51～69%, silicon ash 3～7%, slag 25～35%, flyash 3～7%.
3. the high overall container of concrete reinforced by assorted fiber for disposal of radioactive substances according to claim 1, is characterized in that, the grain composition of described stone is 5mm～10mm and 10mm～20mm bis-gratings, and wherein maximum particle diameter is no more than 20mm.
4. the high overall container of concrete reinforced by assorted fiber for disposal of radioactive substances according to claim 1, is characterized in that, the fineness modulus of described sand is 2.60.
5. the high overall container of concrete reinforced by assorted fiber for disposal of radioactive substances according to claim 1, is characterized in that, described cement adopts P.I type cement, and strength mark is not low by 42.5.
6. the high overall container of concrete reinforced by assorted fiber for disposal of radioactive substances according to claim 1, is characterized in that, described water reducer is liquid polycarboxylic acid water reducing agent, and water-reducing rate is 30%.
7. the high overall container of concrete reinforced by assorted fiber for disposal of radioactive substances according to claim 1, is characterized in that, described sand coarse aggregate ratio is 35%.
8. the high overall container of concrete reinforced by assorted fiber for disposal of radioactive substances according to claim 1, it is characterized in that, described assorted fibre is mixed by steel fiber, carbon fiber and amorphous alloy fiber, steel fiber diameter is 0.18mm～0.23mm, length is 12mm～14mm, and volume is 0.3%～1.3% of concrete cumulative volume; Carbon fiber diameter is 7 microns of μ m, and length is 5～8mm, and volume is 0.05%～0.1% of concrete cumulative volume; Amorphous alloy fiber is 5～20mm, and width is 1mm, and thickness is 24mm, and volume is 0.05%～0.1% of concrete cumulative volume.
9. the preparation method of the high overall container of concrete reinforced by assorted fiber for disposal of radioactive substances, is characterized in that, comprises the steps:
A. the disposal of radioactive substances described in arbitrary claim 1-8 claim is carried in the forming room that is put in 20 degree the day before yesterday with the raw material of the high overall container of concrete reinforced by assorted fiber;
B. the program that feeds intake is thrown in hopper by the order of stone, assorted fibre, sand, gelling material, first dry mixing 1～2min in stirrer, then the wet-mixing 3min that adds water, and total churning time is controlled in 6min, then builds moulding;
C. under 20 ℃ ± 2 ℃ of temperature, more than relative humidity 95%RH condition, carry out maintenance.
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Cited By (8)
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| CN104591632A (en) * | 2015-01-15 | 2015-05-06 | 黑龙江工程学院 | Preparation method of waste glass fiber reinforced plastic powder toughened concrete composite |
| CN105601193A (en) * | 2016-03-04 | 2016-05-25 | 河海大学 | Amorphous alloy fiber-reinforced concrete and preparation method thereof |
| CN106278012A (en) * | 2016-07-25 | 2017-01-04 | 安庆惠嘉新型建材有限公司 | A kind of steel carbon mixed-fiber reinforced concrete material and preparation method thereof |
| CN106278037A (en) * | 2016-08-12 | 2017-01-04 | 中国建筑材料科学研究总院 | Super dense concrete |
| CN106396445A (en) * | 2016-08-29 | 2017-02-15 | 上海市建筑科学研究院 | Composite enhancing material special for concrete used for intermediate-level radioactive waste disposal container and preparation method of composite enhancing material |
| CN106892616A (en) * | 2017-01-19 | 2017-06-27 | 武汉海王新能源工程技术有限公司 | A kind of radioactive solid waste disposal lidstock material of concrete HIC |
| CN108101431A (en) * | 2017-12-12 | 2018-06-01 | 北京科技大学 | A kind of neutron shield special concrete of amorphous fiber enhancing and preparation method thereof |
| CN113387647A (en) * | 2021-06-17 | 2021-09-14 | 广东中路防护工程有限公司 | Gamma-ray-proof ultrahigh-performance concrete and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105601193A (en) * | 2016-03-04 | 2016-05-25 | 河海大学 | Amorphous alloy fiber-reinforced concrete and preparation method thereof |
| CN105601193B (en) * | 2016-03-04 | 2017-09-29 | 河海大学 | A kind of amorphous alloy fiber enhancing concrete and preparation method thereof |
| CN106278012A (en) * | 2016-07-25 | 2017-01-04 | 安庆惠嘉新型建材有限公司 | A kind of steel carbon mixed-fiber reinforced concrete material and preparation method thereof |
| CN106278037A (en) * | 2016-08-12 | 2017-01-04 | 中国建筑材料科学研究总院 | Super dense concrete |
| CN106396445A (en) * | 2016-08-29 | 2017-02-15 | 上海市建筑科学研究院 | Composite enhancing material special for concrete used for intermediate-level radioactive waste disposal container and preparation method of composite enhancing material |
| CN106396445B (en) * | 2016-08-29 | 2019-08-06 | 上海市建筑科学研究院 | Medium-level waste disposal container concrete composite reinforcing material and preparation method thereof |
| CN106892616A (en) * | 2017-01-19 | 2017-06-27 | 武汉海王新能源工程技术有限公司 | A kind of radioactive solid waste disposal lidstock material of concrete HIC |
| CN106892616B (en) * | 2017-01-19 | 2019-09-13 | 武汉海王新能源工程技术有限公司 | A kind of radioactive solid waste disposition lidstock material of concrete HIC |
| CN108101431A (en) * | 2017-12-12 | 2018-06-01 | 北京科技大学 | A kind of neutron shield special concrete of amorphous fiber enhancing and preparation method thereof |
| CN113387647A (en) * | 2021-06-17 | 2021-09-14 | 广东中路防护工程有限公司 | Gamma-ray-proof ultrahigh-performance concrete and preparation method thereof |
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