CN102276207B - Ferrosilicon sacrificial concrete - Google Patents
Ferrosilicon sacrificial concrete Download PDFInfo
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- CN102276207B CN102276207B CN2011101780859A CN201110178085A CN102276207B CN 102276207 B CN102276207 B CN 102276207B CN 2011101780859 A CN2011101780859 A CN 2011101780859A CN 201110178085 A CN201110178085 A CN 201110178085A CN 102276207 B CN102276207 B CN 102276207B
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- 239000004567 concrete Substances 0.000 title claims abstract description 68
- 229910000519 Ferrosilicon Inorganic materials 0.000 title claims description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 16
- 239000004568 cement Substances 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 40
- 229910052742 iron Inorganic materials 0.000 claims description 18
- 239000010881 fly ash Substances 0.000 claims description 11
- 235000013312 flour Nutrition 0.000 claims description 8
- 239000000155 melt Substances 0.000 abstract description 34
- 239000000203 mixture Substances 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 14
- 238000009792 diffusion process Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 3
- 239000004035 construction material Substances 0.000 abstract description 3
- 238000009435 building construction Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 abstract description 2
- 239000010883 coal ash Substances 0.000 abstract description 2
- 229910052595 hematite Inorganic materials 0.000 abstract description 2
- 239000011019 hematite Substances 0.000 abstract description 2
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 abstract description 2
- 239000011863 silicon-based powder Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000001816 cooling Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000002585 base Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 229910052770 Uranium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000004992 fission Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 2
- 241000370738 Chlorion Species 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000005354 aluminosilicate glass Substances 0.000 description 1
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000007974 melamines Chemical class 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010517 secondary reaction Methods 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000003335 steric effect Effects 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-M sulfamate Chemical compound NS([O-])(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-M 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-O sulfonium Chemical compound [SH3+] RWSOTUBLDIXVET-UHFFFAOYSA-O 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
-
- 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
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention which relates to sacrificial concrete belongs to the technical field of building construction. The sacrificial concrete is prepared by stirring and mixing the following components: 10-18 wt% of cement which satisfies requirements of standards, 3-8 wt% of coal ash, 1-3 parts of silicon powder, 30-40 wt% of hematite, 32-42 wt% of silica, 5-10 wt% of water, and 0.1-0.5 wt% of a water reducer. By carrying out the organic combination of original characteristics of above components, the sacrificial concrete which is prepared through mixing the components according to a certain proportion allows all requirements of reactor core construction materials to be satisfied, and simultaneously has effects of controlling the diffusion of molten oxides and the homogeneousness of the molten oxides in a diffusion state, so the sacrificial concrete of the invention can interact with other core melts at a high temperature to preliminary change characteristics of a molten mixture, thereby the high radioactivity components in the core melts can be oxidized, the temperature of the core melts can be reduced, and the increase of the pressure in a containment vessel can be reduced by reducing gases generated in the containment vessel.
Description
Technical field
The present invention relates to a kind of sacrificial concrete, especially a kind of ferrosilicon sacrificial concrete belongs to technical field of building construction.
Background technology
Understand according to the applicant, the reactor core of third generation EPR Nuclear power plants is equipped with trap, its effect is that the reactor core melts in major accident (although probability is very low) is diffused on the side large area region, thereby by obviously increasing the surface/volume of melts, but and with the reactor core transfer of melt to cooled region, avoid the reactor core melts that the base plate fusing is penetrated base plate and cause the environment nuclear pollution.
For surperficial overflow, and give full play to the effect of trap cooling structure, carry out quenching from top, bottom and the periphery of melts, take away the disintegration heat on surface, wish the at high temperature melting of construction material of reactor core, and satisfy following the requirement:
A., enough stability must be arranged to provide melts to assemble the required time;
B. the diffusion of degradation production reply molten oxide produces Beneficial Effect, and makes melts be in uniform state when beginning to spread;
C. the gas that produces due to melts one concrete interaction has additionally increased quality and the energy that is discharged in the nuclear reactor safety shell, therefore the gas that the concrete decomposition produces must be the least possible;
D. mechanical property should be not less than the common building concrete.
Experimental molten oxide test demonstration, common building can only satisfy above-mentioned A and the requirement of D bar with concrete.Therefore existing concrete can't satisfy above-mentioned requirements, is difficult to make trap to play a role.
Summary of the invention
In a single day the object of the invention is to: a kind of at high temperature ferrosilicon sacrificial concrete of abundant melting is provided, thereby makes its nuclear power station reactor core of constructing when major accident occuring, form the melts of good fluidity.With in reactor core transfer of melt to a cooling structure, increase considerably the surface/volume of melts by this mode.By rinsing from the melts top and sharply cooling, thereby eliminate the disintegration heat of melts upper surface; And eliminate melts bottom and side disintegration heat by cooling pile core melts trap, avoid the reactor core melts that the base plate fusing is penetrated base plate and cause the environment nuclear pollution.
In order to achieve the above object, ferrosilicon sacrificial concrete of the present invention is mixed by the component of following mass percent and forms:
Satisfy standard (PII42.5 in " general purpose portland cement " GB175-2007) requirement
Above-mentioned rhombohedral iron ore as aggregate preferably is comprised of the 5-15% for 23-33% and particle diameter 4-8mm of particle diameter 0-4mm, and silica preferably is comprised of the 22-32% of particle diameter 0-4mm and the 6-16% of particle diameter 4-8mm.Water reducer should adopt water-reducing rate greater than 25% high efficiency water reducing agent, for example poly carboxylic acid series water reducer.
The function of sacrificial concrete is interact with the reactor core melts and change the characteristic of mixture (reactor core melts+container+sacrificial concrete).The purpose of ferrosilicon sacrificial concrete is: assemble melts in accident after, it is entered the spreading area; In restriction molten component range of scatter, make melts spread to control melts; It is mainly used in: reduce oxidation stage density, thereby transform oxide compound and the metal level that consists of the reactor core melts; High reactivity composition in the liquid melts of oxidation, the uranium of particularly separating out from fuel assembly and involucrum and zircalloy; Reduce melt temperature; By reducing gas (H
2O and CO
2) the generation increase of lowering the reactor housing internal pressure.
Theoretical investigation and experiment show, in the above-mentioned each component of the present invention:
Silica flour is again the silicon ash, and the flue dust of usually overflowing with waste gas in the process of industrial furnace high melt industrial silicon and ferrosilicon forms through capturing collection and treatment.Be mainly SiO
2, particle is very tiny, and mean particle size is almost nano level, play simultaneously packing material and pozzolanic material effect in concrete, can greatly reduce the pore dimension in the aquation slurry, improve void distribution, concrete strength is improved, and perviousness reduces, and helps to improve durability index.
Flyash mainly by vitreum, mullite, quartzy and a small amount of other mineral compositions, is the industrial residue that the fuel-burning power plant produces usually, can produce i.e. " active effect ", " ball effect " and " micro aggregate effect " three kinds of effects in concrete." active effect " refers to the Ca (OH) that activeconstituents aluminosilicate glass body in flyash and hydrated cementitious produce
2Secondary reaction occuring generate hydrated calcium silicate etc., has slackened Ca (OH)
2In the crystallization of concrete interface transition layer, greatly reduce the inside concrete voidage, improved the concrete hole structure, improved concrete intensity and density." ball effect " refers to a large amount of sponge glass body and alumina silicate glass microballons in flyash, and its smooth surface has the spot contact bearing effect in concrete, improve concrete workability." micro aggregate effect " refers to that the subparticle of coal ash is filled into the gap between cement granules, improved concrete microtexture, increased concrete density.Simultaneously, the flyash subparticle is evenly distributed between cement granules, has stoped the cement granules adhesive aggregation, is conducive to the aquation of mixture, has reduced water consumption, makes that concrete is not emanated, bleeding reduces, and improved concrete cohesiveness and pumpability.In a word, flyash can improve concrete workability and pump-conveying property, extends simultaneously concrete time of coagulation, reduces hydration heat, reduces and shrinks, and improves concrete anti-permeability performance and later stage anti-freezing property etc.
water reducer (admixture) is the tensio-active agent that contains the carboxyl graft copolymer in molecule, wherein poly carboxylic acid series water reducer is the naphthalene system of continuing, melamine series, third generation high efficiency water reducing agent after fat family and sulfamate based water reducer, its molecular structure is pectination, main chain is short, be polymerized by carboxylic reactive monomer, have higher space steric effect and low-dosage, high water reducing rate, early strength increases significantly, function of slump protection is good, slow setting not, less on concrete drying shrinkage impact, result of use is not subjected to the plurality of advantages such as admixture sequentially affects.
Fe as the rhombohedral iron ore main component
2O
3Be conducive to the oxidation to zirconium (Zr) and uranium (U), its reaction by-product iron (Fe) does not affect the thermochemical property of metal melt.In addition, after deposite metal and expendable oxidizing reaction, remaining Fe
2O
3Be gathered into FeO in the oxidation fusion thing
X, X 〉=1 has reduced liquid temperature and has correspondingly reduced the temperature that melts-concrete interacts and produces.It reduces the release of fission product in melts-concrete interaction by reducing the radiant heat loss in cooling melts in diffusion process, melts is entered the spreading area produced favourable influence.
SiO as the siliceous aggregate main component
2Generate silicate after mixing with melts, reduced the release of fission product in melts-concrete interaction pond, further reduced melts and carry out the active of energy response and help to keep with normal concrete the same physical strength and decomposability with water.
the sacrificial concrete of the present invention of making after these components are mixed by a certain percentage can be by the combination of each component primary characteristic, satisfy simultaneously the requirements as the reactor core construction material, and has a homogeneous effect of melts when controlling molten oxide diffusion and diffusion, can at high temperature interact with other melts of reactor core, the preliminary characteristic that changes molten mixture, so that the high radioactivity composition of oxidation reactor core melts, reduce the temperature of reactor core melts, reduce the increase of reactor housing internal pressure by reducing the gas that produces in reactor housing.
Embodiment
The concrete ferrosilicon sacrificial concrete component of implementing of the present invention sees the following form
Relevant technologies requires to see Table 1.
The technical requirements of table 1 starting material and ferrosilicon sacrificial concrete
(1) starting material
Cement: PII 42.5 cement that Zhujiang River Cement Co., Ltd is produced, satisfy PII42.5 requirement in " general purpose portland cement " GB175-2007, its performance sees Table 2.
The performance of table 2 cement
Flyash: the I level F class high-quality fly ash that Zhuhai Ming Hui trade Co., Ltd produces, its performance sees Table 3.
The performance of table 3 flyash
Silica flour: sky, the Shanghai happy silica flour 90U of Materials Co., Ltd type silica flour, its performance sees Table 4.
The performance of table 4 silica flour
| Sequence number | Interventions Requested | Assay |
| 1 | Loss on ignition | 2.82％ |
| 2 | Chlorion | 0.003％ |
| 3 | Silicon-dioxide | 95.02％ |
| 4 | Specific surface area | 20800m 2/kg |
| 5 | Water ratio | 0.9％ |
| 6 | Water demand ratio | 110％ |
| 7 | 28 days activity indexs | 106％ |
| 8 | Sulphur trioxide | 0.75％ |
| 9 | Total alkali content | 0.50％ |
| 10 | Free calcium oxide | 0.00 |
[0039]
| 11 | Sulfonium ion | 0.005％ |
Silica: the chemical composition that Rongshui Guangxi produces silica sees Table 5.
The chemical composition of table 5 silica
The 0-4mm silica: the salient features that Rongshui Guangxi produces the 0-4mm silica sees Table 6.
The salient features of table 6 0-4mm silica
| Silt content % | Clod content % | Apparent density kg/m 3 | Tap density kg/m 3 |
| 2.7 | 0.2 | 2600 | 1450 |
The 4-8mm silica: the salient features that Rongshui Guangxi produces the 4-8mm silica sees Table 7.
The salient features of table 7 4-8mm silica
| Silt content % | Clod content % | Apparent density kg/m 3 | Tap density kg/m 3 |
| 0.4 | 0.2 | 2640 | 1520 |
Rhombohedral iron ore: the Xuzhou chemical composition that iron ore produces rhombohedral iron ore that benefits the nation sees Table 8.
The chemical composition of table 8 rhombohedral iron ore
The 0-4mm rhombohedral iron ore: the Xuzhou salient features that iron ore produces the 0-4mm rhombohedral iron ore that benefits the nation sees Table 9.
The salient features of table 9 0-4mm rhombohedral iron ore
| Silt content % | Clod content % | Apparent density kg/m 3 | Tap density kg/m 3 |
| 2.9 | 0.1 | 4610 | 2530 |
The 4-8mm rhombohedral iron ore: the Xuzhou salient features that iron ore produces the 4-8mm rhombohedral iron ore that benefits the nation sees Table 10.
The salient features of table 10 4-8mm rhombohedral iron ore
| Silt content % | Clod content % | Apparent density kg/m 3 | Tap density kg/m 3 |
| 1.4 | 0.2 | 4720 | 2420 |
Water reducer: the ADVA161C type water reducer that Grace China Ltd. produces, its performance sees Table 11.
The performance of table 11 ADVA161C type water reducer
(2) ferrosilicon sacrificial concrete siliceous aggregate grain composition is calculated and is seen Table 12.
Table 12 ferrosilicon sacrificial concrete siliceous aggregate grain composition reckoner
(3) ferrosilicon sacrificial concrete rhombohedral iron ore particles of aggregates grating is calculated, and sees the following form 13.
Table 13 ferrosilicon sacrificial concrete rhombohedral iron ore grain composition reckoner
(4) meet under the prerequisite of technical requirements at starting material, ferrosilicon sacrificial concrete is studied test, test situation sees Table 14, and silica in table, hematite are unlisted.
Table 14 ferrosilicon sacrificial concrete proportioning research trial situation
Through the ferrosilicon sacrificial concrete research trial is calculated with the chemical composition of benchmark proportioning, its result meets design requirements, specifically sees Table 15.
The chemical composition of table 15 ferrosilicon sacrificial concrete
(5) the benchmark proportioning of research trial being used has been carried out feasibility test at concrete mixing plant, and the ferrosilicon sacrificial concrete mixture goes out the machine slump in design requirements (170 ± 30) mm scope, and its ultimate compression strength meets the demands.
Confirm through pumping test: ferrosilicon sacrificial concrete is through the stirring of 300s, and the mixture pumpability can be good when 60min, 90min after going out machine; The mixture workability that goes out after pump is good.This proportioning can satisfy the pumping construction technical requirements.
Confirm through the quantum of output test: stirrer is produced 1.0m
3Concrete actual output amount is 0.995m
3, error is-0.50%, in 2% error allowed band.
Therefore, according to above-mentioned test-results, finally determined the ferrosilicon sacrificial concrete proportioning, as shown in table 16 below mix practical:
Table 16 C30/37 ferrosilicon sacrificial concrete proportioning
For guaranteeing construction quality and improving concrete construction performance and physicals, when producing, concrete mix adds mineral additive silica flour and flyash, and the high-efficiency water-reducing agent of poly-carboxylic acid that uses high water reducing rate.
From test-results, the concrete decomposition temperature of the present embodiment is approximately 1180 ℃.Because the convection current that generates γ-ray emission mixes, melts-concrete can interact, and makes melts collecting tank border form uniform heat distribution.Test is demonstration also, and melt temperature only has a little reduction (if existence) in process of the test, and this explanation melts-concrete interacts and has a lower melting rate, thereby possesses favourable melts condition of divergence.
In addition to the implementation, the present invention can also have other embodiments.For example water reducer also can adopt ADVA160C or the ADVA162C type polycarboxylic acid series high efficiency water reducing agent that ASTP5800-1 that JM-PCA (I), the BASF chemical building material company limited of Sample A that Shanghai Fu Sile produces or Sample B, Su Bote novel material company limited produces or Grace China Ltd. produce.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (6)
1. ferrosilicon sacrificial concrete is characterized in that component by following mass percent mixes to form:
Satisfy the cement 10-18% that GB requires
Flyash 3-8%
Silica flour 1-3%
Rhombohedral iron ore 30-40%
Silica 32-42%
Water 5-10%
Water reducer 0.1-0.5%.
2. ferrosilicon sacrificial concrete according to claim 1, is characterized in that: the loss on ignition of described flyash≤1.5%.
3. ferrosilicon sacrificial concrete according to claim 1, is characterized in that: Si0 in described silica flour
2Content 〉=90%.
4. ferrosilicon sacrificial concrete according to claim 1, is characterized in that: Fe in described rhombohedral iron ore
2O
3Content 〉=90%.
5. ferrosilicon sacrificial concrete according to claim 1, is characterized in that: Si0 in described silica
2Content 〉=83%.
6. ferrosilicon sacrificial concrete according to claim 1, it is characterized in that: the water-reducing rate of described water reducer is greater than 25%.
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|---|---|---|---|---|
| CN108840626B (en) * | 2018-07-17 | 2021-02-02 | 南京林业大学 | A kind of ferrosilicon nuclear power sacrificial material and preparation method thereof |
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