CN106396445A - Composite enhancing material special for concrete used for intermediate-level radioactive waste disposal container and preparation method of composite enhancing material - Google Patents
Composite enhancing material special for concrete used for intermediate-level radioactive waste disposal container and preparation method of composite enhancing material Download PDFInfo
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- CN106396445A CN106396445A CN201610757402.5A CN201610757402A CN106396445A CN 106396445 A CN106396445 A CN 106396445A CN 201610757402 A CN201610757402 A CN 201610757402A CN 106396445 A CN106396445 A CN 106396445A
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- reinforcing material
- specific complex
- concrete
- complex reinforcing
- disposal container
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a composite enhancing material special for high-performance concrete used for an intermediate-level radioactive waste concrete disposal container and a preparation method of the composite enhancing material. The composite enhancing material comprises the following components, by weight percentage, 40-60% of slag fine powder, 10-40% of coal ash, 15-30% of silica fume, and 1-2.5% of carbon fiber. Different additives develop different optimizing function on working performance, mechanical property and endurance capacity of high-strength concrete, and short carbon fiber can improve the cracking phenomenon of the high-strength concrete, so that a product meeting requirements of high cracking resistance and high durability of a disposal container concrete material is obtained. In an actual production process, a composite enhancing material special for manufacturing a concrete container is provided and is beneficial for metering control. The production cost is reduced, and the production efficiency is improved.
Description
Technical field
The invention belongs to building material technical field is and in particular to a kind of medium-level waste disposal container concrete specific complex increases
Strong material and preparation method thereof, i.e. a kind of Intermediate-level radioactive's waste concrete disposal container high performance concrete specific complex
The compound method of reinforcing material.
Background technology
Greatly develop with China's Nuclear Electricity, low, middle level radioactive waste yield is continuously increased, respectively plan to build,
Build, in-service nuclear power plant send demand and the pressure of disposal after all facing intermediate storage in middle low-level waste factory in a large number.According to
GB11928-89《Low, middle Intermediate Level Radioactive solid waste temporarily stores regulation》Requirement, in waste factory, temporary transient storage period is at most
For 5 years, after 5 years, radwaste faced the problem of transport and final disposal.Low middle Intermediate Level Radioactive solid gives up both at home and abroad at present
Mostly by the way of near surface disposal, the disposal container of reception includes polyethylene can, concrete container and steel (ball to gurry
Mill cast iron) container etc., but consider from combined factors such as economy, practicality, durability, preferably select concrete material to prepare low
The disposal container of medium-level waste.
But low and intermediate level radioac disposal container is more strict to the performance requirement of concrete material.On the one hand, in order that giving up
Thing disposal container can bear the falling height of transportation it is ensured that its radioactivity content is not to Environment release, and designed is mixed
Solidifying soil disposal container should have higher physical and mechanical property and cracking resistance；On the other hand, due to the radiation of near surface disposal
Property waste radioactivity after 300 years just can be reduced to level of security, disposal container with concrete material must meet 300 years durable
Property service life require.This not only needs to improve the intensity of concrete by mix-design, with greater need for by fiber reinforcement
Technology improves the cracking resistance of concrete and the endurance quality improving concrete by admixture technology.
Admixture technology is a conventional technology during modern concrete mix-design, singly mixing including admixture
Be doped with again and admixture composite modified etc..The mineral admixtures such as single incorporation breeze, flyash, silicon ash are to concrete performance
Improvement result more or less all there is limitation, as low in early strength, workability declines, endurance quality lifting is not sufficiently effective
The problems such as.The Composite of admixture contributes to, using good technology coupling between mineral admixture, giving full play to several mixing
Close the synergism function of material.
But individually admixture complex technique cannot solve the brittleness problems of high performance concrete and early-age plastic is opened
Split problem, should comprehensively adopt fiber reinforcement technology.Due in current research conventional steel fibre cannot prove its long durability,
There is resistance to irradiance problems, glass fibre and basalt fibre and there is alkaline-resisting sex chromosome mosaicism in synthetic fibers, preferably select in theory in coagulation
There is not the carbon fiber of endurance issues as fibre reinforced materials in soil body system.
Content of the invention
The invention aims to improving the cracking resistance, durable of Intermediate-level radioactive's waste concrete disposal container
Performance and used life, specific complex reinforcing material product and its compound method that provides convenient plant produced uses.
The purpose of the present invention is achieved through the following technical solutions.
A kind of medium-level waste disposal container concrete specific complex reinforcing material is it is characterised in that include following weight hundred
Divide the component of ratio：
The slag micropowder of a%, the flyash of b%, the silicon ash of c%, the carbon fiber of d%；
Wherein 40≤a≤60,10≤b≤40,15≤c≤30,1≤d≤2.5.
Described specific complex reinforcing material is divided into I type specific complex reinforcing material and II type specific complex reinforcing material, to I
For type specific complex reinforcing material：40≤a ＜ 50,25 ＜ b≤40,15≤c ＜ 22.5,1≤d≤2.5；Special to I type multiple
For closing reinforcing material：50≤a≤60、10≤b≤25、22.5≤c≤30、1≤d≤2.5.
Preferably, a=48.8, b=32.6, c=16.3, d=2.3 in described I type specific complex reinforcing material.
Preferably, a=55.4, b=16.3, c=26.0, d=2.3 in described II type specific complex reinforcing material.
The preparation method of above-mentioned specific complex reinforcing material, comprises the steps of：
(1) S95 slag powders, II grade of flyash and specific surface area are more than 18000m2After the silicon ash of/kg is dried, by above-mentioned
Ratio is sufficiently mixed, I type specific complex reinforcing material mix 10～15min, II type specific complex reinforcing material mixing 15～
20min；
(2) well-mixed composite blend is placed in forced mixer, at the uniform velocity adds long 20mm's with loading hopper
Chopped carbon fiber, the no obvious agglomeration of stirring 10～20min to carbon fiber, and be uniformly distributed in composite blend.To fill
Divide mixed compound system with mono- bag of packing of 25kg, form specific complex reinforcing material product.
Above-mentioned composite reinforcing material can directly be mixed with cement, sand, stone, additive, mixing water etc. after opening bag, routinely mixes
Solidifying soil production method mixing Intermediate-level radioactive's waste disposal container high performance concrete, special-less process requires.
The present invention has effectively played " combined effect " between specific complex reinforcing material different component, blends including different
The optimization function to high-strength concrete service behaviour, mechanical property and endurance quality for the material, and chopped carbon fiber is to high-strength coagulation
The improvement result of native cracking phenomena, by combining manufacture based on composite mixing technology and fiber reinforcement technology, from quality raw materials, develops
Go out Intermediate-level radioactive's waste disposal container high performance concrete specific complex reinforcing material product, meet disposal container
Concrete material high cracking resistance and the requirement of high-durability, meanwhile, in actual production process, can be the system of concrete container
Make to provide specific complex reinforcing material product, be easy to measure control, reduce production cost improve production efficiency.
Specific embodiment
Describe technical scheme with reference to present pre-ferred embodiments in detail.
Embodiment 1
S95 breeze, II grade of flyash of high-quality and the Ai Ken state that species abundance in Baosteel in Shanghai building material Development Co., Ltd is produced
The silicon ash that border trade (Shanghai) Co., Ltd. produces, by I type (breeze 50%, flyash 33.3%, silicon ash 16.7%), II type
(breeze 56.7%, flyash 16.7%, silicon ash 26.7%) mixes 15min in batch mixer.Compound after being sufficiently mixed is mixed
Close material, the length producing with Nanjing Wei Da composite company limited is that the chopped carbon fiber of 20mm is placed in forced mixer
(composite blend 97.7%：Chopped carbon fiber 2.3%) stirring 15min be completely dispersed to carbon fiber, obtain I type and II type be special
Use composite reinforcing material.
Embodiment 2
S95 breeze, II grade of flyash of high-quality and the Ai Ken state that species abundance in Baosteel in Shanghai building material Development Co., Ltd is produced
The silicon ash that border trade (Shanghai) Co., Ltd. produces, by I type (breeze 40.4%, flyash 40.4%, silicon ash 19.2%), II type
(breeze 51.3%, flyash 26.7%, silicon ash 22.1%) mixes 15min in batch mixer.Compound after being sufficiently mixed is mixed
Close material, the length producing with Nanjing Wei Da composite company limited is that the chopped carbon fiber of 20mm is placed in forced mixer
(I type ratio：Composite blend 99.0%, short carbon fiber 1.0%；II type ratio：Composite blend 97.5%, chopped carbon fiber
2.5%) stirring 15min is completely dispersed to carbon fiber, obtains I type and II type specific complex reinforcing material.
Embodiment 3
S95 breeze, II grade of flyash of high-quality and the Ai Ken state that species abundance in Baosteel in Shanghai building material Development Co., Ltd is produced
The silicon ash that border trade (Shanghai) Co., Ltd. produces, by I type (breeze 51.3%, flyash 25.6%, silicon ash 23.1%), II type
(breeze 60.6%, flyash 10.1%, silicon ash 29.3%) mixes 15min in batch mixer.Compound after being sufficiently mixed is mixed
Close material, the length producing with Nanjing Wei Da composite company limited is that the chopped carbon fiber of 20mm is placed in forced mixer
(I type ratio：Composite blend 97.5%, short carbon fiber 2.5%；II type ratio：Composite blend 99.0%, chopped carbon fiber
1.0%) stirring 15min is completely dispersed to carbon fiber, obtains I type and II type specific complex reinforcing material.
Prepared by each embodiment, the Performance comparision of product is shown in Table 1.
The effectiveness comparison of table 1 different proportion special reinforcing material admixture part
As it can be seen from table 1 within the scope of the claims, the activity index of special reinforcing material admixture part totally connects
Closely.In embodiment 2, the fly ash content of admixture part is of a relatively high, and activity index is lower slightly.Admixture part in embodiment 3
Silicon ash content is of a relatively high, and activity index is slightly higher.In embodiment 2 and embodiment 3, the value of each component is claim 1 defined
The end points position of interval range, the result of the overall performance of specific complex reinforcing material and embodiment 1 closer to.Therefore, this
In I type prepared by Example 1 and II type specific complex reinforcing material carry out concrete test checking.
Concrete test 1
Specific complex reinforcing material prepared by Example 1 carries out concrete early-stage crack resistance test, concrete
Gel material content is 500kg/m3, water-cement ratio is 0.30, and reinforcing material consumption is the percentage ratio accounting for binder total amount.Test
The results are shown in Table 2.
The impact to high-strength concrete early anti-cracking behavior energy for the table 2 specific complex reinforcing material
Due to increased chopped carbon fiber in specific complex reinforcing material system, its early-age crack to high-strength concrete
Can there is larger improvement result.As it can be seen from table 1 adopting flyash and breeze as the situation phase of reinforcing material with independent
Specific complex reinforcing material is by total for the unit area of high-strength concrete area of cracks by 462mm for ratio2It is reduced to 100mm2Hereinafter, early
Phase cracking resistance grade is promoted to V grade by III grade.Wherein, II type specific complex reinforcing material due to silicon ash content higher, plasticity
Shrink relatively large, early-age crack area is slightly below I type specific complex reinforcing material.
Concrete test 2
Specific complex reinforcing material prepared by embodiment 1 mixes Intermediate-level radioactive's waste concrete disposal container and uses
Its mechanical property and endurance quality is tested after high-strength high-performance concrete.
Respectively by I type specific complex reinforcing material with 30% ratio substitute cement, II type specific complex reinforcing material with
20% ratio substitutes cement, prepares high-strength concrete.The gel material content of high-strength concrete is 500kg/m3, water-cement ratio is
0.33, table 2 gives the high-strength concrete of admixture specific complex reinforcing material and does not mix admixture or only mix a or two kind blending
The partial properties comparing result of the high-strength concrete of material.
Table 2 different minerals admixture Properties of High Strength Concrete result of the test
Table 2 result illustrates, fills high-strength concrete 28d comprcssive strength and the tensile splitting strength of specific complex reinforcing material
General status than do not mix mineral admixture or be used alone the mineral admixtures such as flyash or breeze effect good, especially electricity
Flux and chloride permeability coefficient aspect, increase significantly.Show specific complex reinforcing material make concrete degree of compaction and
Endurance quality significantly improves, and anti-crack ability also has the lifting of certain amplitude.
Concrete test 3
The I type specific complex reinforcing material that prepare embodiment 1 and II type specific complex reinforcing material mix medium level
Radwaste concrete disposal container high-strength high-performance concrete material, the gel material content of high-strength high-performance concrete is
500kg/m3, water-cement ratio is 0.30.According to GB《Low middle level radioactive waste high entirety container concrete container》(declaration
Original text) set quota requires, to mixing the high-strength high-performance concrete of 30% I type specific complex reinforcing material and to mix 20% II type special
Carry out full performance detection with the high-strength high-performance concrete of composite reinforcing material, result is as shown in table 3.
The full performance test results of table 3 Intermediate-level radioactive's waste disposal container high-performance concrete material
Full performance test result shows, is prepared using I type specific complex reinforcing material and II type specific complex reinforcing material
High-strength high-performance concrete mechanical property and endurance quality index be substantially better than national standard require, wherein II type specific complex
Reinforcing material using the rear improvement to endurance quality more preferably.
Ultimate principle, principal character and the advantages of the present invention of the present invention have been shown and described above.The technology of the industry
, it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description is originally for personnel
Invention principle, without departing from the spirit and scope of the present invention the present invention also have various changes and modifications, these change
Change and improvement both falls within scope of the claimed invention.
Claims (5)
1. a kind of medium-level waste disposal container concrete specific complex reinforcing material is it is characterised in that include following weight percent
The component of ratio：
The slag micropowder of a%, the flyash of b%, the silicon ash of c%, the carbon fiber of d%；
Wherein 40≤a≤60,10≤b≤40,15≤c≤30,1≤d≤2.5.
2. medium-level waste disposal container concrete specific complex reinforcing material according to claim 1 is it is characterised in that institute
State specific complex reinforcing material and be divided into I type specific complex reinforcing material and II type specific complex reinforcing material, to I type specific complex
For reinforcing material：40≤a ＜ 50,25 ＜ b≤40,15≤c ＜ 22.5,1≤d≤2.5；To II type specific complex reinforcing material
For：50≤a≤60、10≤b≤25、22.5≤c≤30、1≤d≤2.5.
3. medium-level waste disposal container concrete specific complex reinforcing material according to claim 1 is it is characterised in that institute
State a=48.8, b=32.6 in I type specific complex reinforcing material, c=16.3, d=2.3.
4. medium-level waste disposal container concrete specific complex reinforcing material described in 1 is required according to right 1 it is characterised in that
A=55.4, b=16.3 in described II type specific complex reinforcing material, c=26.0, d=2.3.
5. the preparation side of the medium-level waste disposal container concrete specific complex reinforcing material described in claim 1-4 any one
Method is it is characterised in that comprise the steps of：
(1) S95 slag powders, II grade of flyash and specific surface area are more than 18000m2After the silicon ash of/kg is dried, fully mixed in proportion
Close, I type specific complex reinforcing material mixes 10～15min, II type specific complex reinforcing material mixes 15～20min；
(2) well-mixed composite blend is placed in forced mixer, at the uniform velocity adds being chopped of long 20mm with loading hopper
Carbon fiber, the no obvious agglomeration of stirring 10～20min to carbon fiber, and be uniformly distributed in composite blend.
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| CN201610757402.5A CN106396445B (en) | 2016-08-29 | 2016-08-29 | Medium-level waste disposal container concrete composite reinforcing material and preparation method thereof |
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| CN201610757402.5A CN106396445B (en) | 2016-08-29 | 2016-08-29 | Medium-level waste disposal container concrete composite reinforcing material and preparation method thereof |
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Cited By (2)
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| CN113754340A (en) * | 2021-08-16 | 2021-12-07 | 贵州工程应用技术学院 | Composite admixture for improving durability of common concrete through improved gradation |
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Cited By (2)
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| CN106396445B (en) | 2019-08-06 |
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Address after: 200032 1st floor, 75 Wanping South Road, Xuhui District, Shanghai Patentee after: SHANGHAI Research Institute OF BUILDING SCIENCES Patentee after: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Patentee after: JIANGSU BAOCHEN PURIFICATION EQUIPMENT CO.,LTD. Address before: 200032 1st floor, 75 Wanping South Road, Xuhui District, Shanghai Patentee before: SHANGHAI Research Institute OF BUILDING SCIENCES Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Patentee before: JIANGSU BAOCHEN PURIFICATION EQUIPMENT CO.,LTD. Address after: 200032 1st floor, 75 Wanping South Road, Xuhui District, Shanghai Patentee after: SHANGHAI Research Institute OF BUILDING SCIENCES Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Patentee after: JIANGSU BAOCHEN PURIFICATION EQUIPMENT CO.,LTD. Address before: 200032 1st floor, 75 Wanping South Road, Xuhui District, Shanghai Patentee before: SHANGHAI Research Institute OF BUILDING SCIENCES Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Patentee before: JIANGSU BAOCHEN PURIFICATION EQUIPMENT CO.,LTD. |