CN105819727B - A kind of concrete complex mineral blending material - Google Patents
A kind of concrete complex mineral blending material Download PDFInfo
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- CN105819727B CN105819727B CN201610148234.XA CN201610148234A CN105819727B CN 105819727 B CN105819727 B CN 105819727B CN 201610148234 A CN201610148234 A CN 201610148234A CN 105819727 B CN105819727 B CN 105819727B
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- concrete
- slag
- complex mineral
- blending material
- mineral blending
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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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of concrete complex mineral blending material, is formed by following material combined grinding by weight：40 60% lithium slags, 10 30% slags, 5 20% nickel slags, 5 10% aerating concrete waste materials, 5 10% sulphoaluminate cement clinkers, 0.1 0.5% super plasticizer powder.The present invention makes full use of trade waste, reduces concrete production cost；It is active high：Concrete early stage and later strength are influenceed smaller；With compensation contractile function：It is impervious good, improve concrete life.
Description
Technical field
The present invention relates to building material field, and in particular to a kind of concrete complex mineral blending material.
Background technology
Cement production consumption is high at present, and produces one ton of cement and about produce one ton of carbon dioxide greenhouse gas, to change this
The kind various metallurgical slags of present situation (slag, slag), flyash, agstone, rice hull ash, waste glass powder etc. are used as mixing material one after another
It is applied in manufacture of cement, or is applied to as mineral admixture in concrete production, reduces cement generation energy consumption, change
Kind environment, while improve cement concrete endurance quality.But these mineral admixtures easily cause cement setting in use
Phenomena such as time lengthening, early stage or later strength reduce.
Document currently with the production mineral admixture such as industry metallurgy slag is numerous, to improve mineral admixture early strength
Relatively low phenomenon, mainly improved at present in document by following technology：
1) a kind of high activity slag micropowder of patent 201210211517.6 and preparation method thereof, patent 201210537602.1
Large dosage slag foam concrete block and preparation method thereof, the ultra-fine coal ash based composite mineral of patent 200810151897.2 are mixed
Close material and preparation method thereof, document《The performance of superfined flyash》(silicate journal, 2003) passes through superfine grinding slag, steel
Slag, flyash etc. improve mineral admixture fineness to improve its activity, but superfine grinding can bring large energy to consume, simultaneously
The problems such as reunion is easily produced after powder is meticulous；
2) 200910131851.9 a kind of blending material for high-early-strength concrete of patent, patent 201510270200.3 is a kind of to be used
In composite blend of high-strength concrete and preparation method thereof, a kind of 201210240692.8 composite blending material for concrete of patent
Deng by alkali metal ion salt, alkali, alcamines exciting agent equal excitation mineral admixture, come improve mineral admixture activity, but
Alkali-activated carbonatite often improves early strength, and later strength is often relatively low；And national standard introduces to concrete admixture
Alkali content has done the i.e. external alkali content of restriction and has been not more than 3kg/m3, alkali content is less, ineffective, has when alkali content is more and causes
Alkali-aggregate reaction risk.
3) technology of preparing and method, document of the high-activity concrete additive of patent 99116326.5《Hydrated calcium silicate is brilliant
The preparation of kind and the influence to strength of cement》(material science and technique, 2007) reduces aquation production by introducing C-S-H crystal seeds
Thing nucleation barrier, accelerate hydrated cementitious speed.C-S-H seed surfaces contain a large amount of scission of links and fault of construction, higher table simultaneously
Face free energy assigns the double action of the ability of C-S-H crystal seeds adion and molecule, absorption and coring, changes the aquation of cement
Process.
The present invention is based on industry byproduct lithium slag and nickel slag, using the high activity of lithium slag and its in sulphate aluminium cement
The early strength that composite blend is improved by the use of air entrained concrete leftover pieces as crystal seed is added under the exciting of clinker, is utilized simultaneously
The higher later strength of slag powders is given composite blend and ensured with later strength, and the work of composite blend is adjusted with super plasticizer
The property made.
The content of the invention
Technical problem：The technical problem to be solved in the present invention is to provide a kind of concrete complex mineral blending material, reduces
Cement and concrete production energy consumption, make full use of industry byproduct to improve the ecological environment, and change conventional composite mineral admixture
The problem of early strength is relatively low.
Technical scheme：To achieve the above object, a kind of concrete of the invention uses following skill with complex mineral blending material
Art scheme is realized：
A kind of concrete of the present invention is formed with complex mineral blending material by following material combined grinding by weight：40-
60% lithium slag, 10-30% slags, 5-20% nickel slag, 5-10% aerating concrete waste materials, 5-10% sulphoaluminate cement clinkers,
0.1-0.5% super plasticizer powder.
The lithium slag SiO2And Al2O3Content sum is more than 70%.
The slag 28d activity indexs are more than 100%.
The aerating concrete waste material is caused leftover pieces in production process of gas concrete, through it is broken and 100 DEG C-
150 DEG C of drying.
The super plasticizer powder is polycarboxylic acid salt's super plasticizer powder or sulfamic acid salt super plasticizer powder, is subtracted
Water rate more than 30%.
The admixture grinding fineness is specific surface area 400-600m2/kg。
Beneficial effect：The present invention compared with prior art, has following obvious advantage：
1) lithium slag contains higher silica and alchlor content, and its essential mineral composition is quartz, spodumene, stone
Cream, mixed as admixture in concrete, there is higher activity.Lithium slag mineral composition contains more gypsum, and volume is more
When, false set is easily produced, therefore slag is mixed in composite blend and on the one hand consumes gypsum dosage in lithium slag, on the other hand
Slag has higher later strength fraction；
2) calcium sulphoaluminate cement minerals can excite lithium slag and slag, while sulphur aluminic acid simultaneously in sulphoaluminate cement clinker
Calcium cement minerals hydration rate is very fast, on the one hand can improve its early strength, on the other hand can adjust complex mineral blending
Expect setting time；
3) air entrained concrete leftover pieces, in aero-crete factory, the larger and utilization rate of amount is low, or as heat insulating material filling
Material uses, and added value is relatively low, higher silicon and aluminium content is contained in air entrained concrete, wherein aluminium is mainly with aluminate hydrated product
In the presence of, it is with lithium slag or sulphoaluminate cement clinker reaction can generate entringite hydrated product, and silicon mainly with C-S-H gels and
Tobermorite is mutually present, and using air entrained concrete leftover pieces as crystal seed, can reduce hydrated product nucleation barrier, accelerate cement
Hydration rate.
4) complex mineral blending material water requirement is adjusted with super plasticizer, alkali is not used as sharp in this complex mineral blending material
Agent, concrete workability, mechanical property, excellent in durability are sent out, while consumes the industrial by-products such as lithium slag, nickel slag, Environmental Effect
Benefit, economic benefit, social benefit are good.
5) composite blend of the present invention has micro-expansibility, can compensate for concrete shrinkage, improves anti-permeability performance.
Embodiment
A kind of concrete complex mineral blending material of the present invention, is formed by following material combined grinding by weight：40-
60% lithium slag, 10-30% slags, 5-20% nickel slag, 5-10% aerating concrete waste materials, 5-10% sulphoaluminate cement clinkers,
0.1-0.5% super plasticizer powder.
The lithium slag SiO2And Al2O3Content sum is more than 70%.
The slag 28d activity indexs are more than 100%.
The aerating concrete waste material is caused leftover pieces in production process of gas concrete, through it is broken and 100 DEG C-
150 DEG C of drying.
The super plasticizer powder is polycarboxylic acid salt's super plasticizer powder or sulfamic acid salt super plasticizer powder, is subtracted
Water rate more than 30%.
The admixture grinding fineness is specific surface area 400-600m2/kg。
Embodiment one,
Concrete complex mineral blending material, by following material combined grinding to specific surface area 600m2/kg：60% lithium slag,
10% slag, 10% nickel slag, 10% aerating concrete waste material, 10% sulphoaluminate cement clinker, 0.5% polycarboxylic acid are super plasticized
Agent powder.
Embodiment two,
Concrete complex mineral blending material, by following material combined grinding by weight to specific surface area 400m2/kg：
40% lithium slag, 20% slag, 20% nickel slag, 10% aerating concrete waste material, 10% sulphoaluminate cement clinker, 0.1% amino
Sulfonates super plasticizer powder.
Embodiment three,
Concrete complex mineral blending material, by following material combined grinding by weight to specific surface area 500m2/kg：
50% lithium slag, 30% slag, 5% nickel slag, 5% aerating concrete waste material, 10% sulphoaluminate cement clinker, 0.3% polycarboxylic acids
Class super plasticizer powder.
Example IV,
Concrete complex mineral blending material, by following material combined grinding by weight to specific surface area 600m2/kg：
50% lithium slag, 20% slag, 20% nickel slag, 5% aerating concrete waste material, 5% sulphoaluminate cement clinker, 0.3% polycarboxylic acids
Class super plasticizer powder.
Performance Assessment index reference of the embodiment of the present invention《Standard for test methods of properties of ordinary concrete mixture》(GB/T
50080-2002)、《Standard for test methods of mechanical properties of ordinary concrete》(GB/T 50081-2002) and《Normal concrete is grown
Phase performance and endurance quality test method standard》(GB/T 50082-2009) is performed, and concrete early-age shrinkage performance uses
The contactless concrete shrinkage deformation analyzers of CABR-NES, test concrete early-age shrinkage performance, test environment temperature (20 ±
2) DEG C, humidity (60 ± 5) %, sampling interval 5min, measurement gauge length 435mm.
Comparative example experiment is made up of with concrete cement, water, water reducer, coarse aggregate, fine aggregate.Its concrete each component
Match ratio is cement: sand (fine aggregate): coarse aggregate: water: water reducer 400: 745: 1055: 165: 6.6.
Concrete is made up of cement, composite blend, water, water reducer, coarse aggregate, fine aggregate in embodiment.Concrete is each
The match ratio of component is cement: composite blend: sand (fine aggregate): coarse aggregate: water: water reducer 200: 200: 745: 1055:
165∶6.6.Composite blend volume is 50%.
C40 concrete specific performance indexs and comparative example concrete specific performance index is made such as in the embodiment of the present invention 1~4
Shown in table 1, from table 1, after mixing 50% complex mineral blending material of the present invention, concrete early stage 3d and later stage 28d intensity are equal
Increase, concrete seven d shrinkage factors reduce, and seepage-resistant grade improves.
Table 1
In lithium slag incorporation concrete of the present invention, there is higher activity.Lithium slag mineral composition contains more gypsum, volume
When more, false set is easily produced, therefore is mixed in composite blend in slag and on the one hand consumes gypsum dosage in lithium slag, separately
One side slag has higher later strength fraction；Calcium sulphoaluminate cement minerals can be simultaneously in sulphoaluminate cement clinker
Lithium slag and slag are excited, while calcium sulphoaluminate cement minerals hydration rate is very fast, on the one hand can improve its early strength, it is another
Aspect can adjust complex mineral blending material setting time；Air entrained concrete leftover pieces, measured in aero-crete factory larger and sharp
It is low with rate, or grind and used as insulation material filler, added value is relatively low, contains in air entrained concrete containing higher silicon and aluminium
Amount, wherein aluminium mainly exist with aluminate hydrated product, and silicon mainly mutually exists with C-S-H gels with tobermorite, to add
Gas concrete edge corner material can reduce hydrated product nucleation barrier, accelerate hydrated cementitious speed as crystal seed.
Complex mineral blending material water requirement is adjusted with super plasticizer, the unused alkali of this complex mineral blending material, which is used as, to be excited
Agent, concrete workability, mechanical property, excellent in durability, while the industrial by-products such as lithium slag, nickel slag are consumed, environmental benefit,
Economic benefit, social benefit are good.Composite blend of the present invention has micro-expansibility simultaneously, can compensate for concrete shrinkage, improves
Anti-permeability performance.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned embodiment, in addition to
Formed technical scheme is combined by above technical characteristic.It should be pointed out that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (5)
1. a kind of concrete complex mineral blending material, it is characterised in that formed by following material combined grinding by weight：40‐
60% lithium slag, 10-30% slags, 5-20% nickel slag, 5-10% aerating concrete waste materials, 5-10% sulphoaluminate cement clinkers,
0.1-0.5% super plasticizer powder；
SiO in the lithium slag2And Al2O3Weight sum is more than 70%.
A kind of 2. concrete complex mineral blending material according to claim 1, it is characterised in that the slag 28d activity
Index is more than 100%.
A kind of 3. concrete complex mineral blending material according to claim 1, it is characterised in that the air entrained concrete
Waste material is caused leftover pieces in production process of gas concrete, through crushing and in 100 DEG C of -150 DEG C of drying.
A kind of 4. concrete complex mineral blending material according to claim 1, it is characterised in that the super plasticizer powder
End is polycarboxylic acid salt's super plasticizer powder or sulfamic acid salt super plasticizer powder, water-reducing rate more than 30%.
A kind of 5. concrete complex mineral blending material according to claim 1, it is characterised in that the admixture grinding
Fineness is specific surface area 400-600m2/kg。
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| CN106431156B (en) * | 2016-10-24 | 2018-12-14 | 广东鸿丰水泥有限公司 | High-performance cement and preparation method thereof |
| CN107188498A (en) * | 2017-07-23 | 2017-09-22 | 四川华西绿舍建材有限公司 | A kind of high-performance lithium slag pump concrete |
| CN108059408A (en) * | 2017-12-22 | 2018-05-22 | 中建八局第建设有限公司 | A kind of high intensity self-compacting concrete and preparation method thereof |
| CN108314396B (en) * | 2018-03-23 | 2020-10-27 | 四川省劲腾环保建材有限公司 | Production method of autoclaved aerated concrete slab and autoclaved aerated concrete slab |
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| CN109400102A (en) * | 2018-12-21 | 2019-03-01 | 山东天玉墙体工程有限公司 | A kind of plastering gupsum |
| CN110937830A (en) * | 2019-12-16 | 2020-03-31 | 淮安市水泥厂有限公司 | Novel mineral powder produced by nickel slag and preparation method thereof |
| CN110981322B (en) * | 2020-01-14 | 2021-09-24 | 淮阴工学院 | Ferronickel slag aggregate concrete |
| CN111732358B (en) * | 2020-06-04 | 2022-01-28 | 淮阴工学院 | Lithium slag-based concrete mineral admixture |
| CN111747773B (en) * | 2020-06-30 | 2022-03-22 | 惠州市英建实业有限公司 | Aerated brick produced by using almond shells and preparation method thereof |
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| CN115432958B (en) * | 2022-08-25 | 2023-04-14 | 嘉华特种水泥股份有限公司 | Is suitable for CO 2 Well cementation cement slurry system of enhanced geothermal system |
| CN115477490B (en) * | 2022-09-15 | 2023-06-23 | 四川华西绿舍建材有限公司 | Solid waste-based high-performance composite admixture and preparation method thereof |
| CN116023057A (en) * | 2022-12-27 | 2023-04-28 | 南昌大学 | High-performance hydration driving material, and preparation method and application thereof |
| CN115819008B (en) * | 2023-02-20 | 2023-05-09 | 西南交通大学 | High-activity low-shrinkage composite mineral admixture and preparation method thereof |
| CN117361917B (en) * | 2023-10-30 | 2024-07-19 | 石家庄市长安育才建材有限公司 | Lithium slag composite admixture, preparation method thereof and sprayed concrete |
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| CN1089732C (en) * | 1999-01-26 | 2002-08-28 | 武汉工业大学 | Process for preparing high-activity concrete additive |
| CN1300034C (en) * | 2005-05-31 | 2007-02-14 | 武汉理工大学 | High-activity shrinkage-compensating mineral admixture and preparation method thereof |
| CN103755191A (en) * | 2013-10-29 | 2014-04-30 | 江苏名和集团有限公司 | Mineral admixture with low water demand and preparation method thereof |
| CN104844111B (en) * | 2015-04-30 | 2016-08-24 | 谭云松 | A kind of admixture and concrete prepared therefrom |
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Application publication date: 20160803 Assignee: NANJING GREEN ADDITIVES INTELLIGENT MANUFACTURING RESEARCH INSTITUTE Co.,Ltd. Assignor: SOUTHEAST University Contract record no.: X2021980000647 Denomination of invention: A kind of composite mineral admixture for concrete Granted publication date: 20171222 License type: Exclusive License Record date: 20210125 |
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