CN105819727A - Composite mineral admixture for concrete - Google Patents
Composite mineral admixture for concrete Download PDFInfo
- Publication number
- CN105819727A CN105819727A CN201610148234.XA CN201610148234A CN105819727A CN 105819727 A CN105819727 A CN 105819727A CN 201610148234 A CN201610148234 A CN 201610148234A CN 105819727 A CN105819727 A CN 105819727A
- Authority
- CN
- China
- Prior art keywords
- concrete
- slag
- complex mineral
- mineral blending
- blending material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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 invention discloses a composite mineral admixture for concrete. The admixture is prepared by mixing and grinding the following raw materials in percentage by weight: 40 to 60% of lithium slag, 10 to 30% of mineral slag, 5 to 20% of nickel slag, 5 to 10% of aerated concrete waste, 5 to 10% of sulfoaluminate cement clinker, and 0.1 to 0.5% of super plasticizer powder. The industrial wastes are fully utilized, the concrete production cost is reduced, and the admixture has a high activity, barely influences the early and late strength of concrete, has a shrinkage-compensating function and good anti-permeability property, and can improve the service life of concrete.
Description
Technical field
The present invention relates to building material field, be specifically related to a kind of concrete complex mineral blending material.
Background technology
Cement production consumption is high at present, and one ton of cement of production about produces one ton of carbon dioxide greenhouse gas, this for changing
The various metallurgical slag of present situation (slag, slag), flyash, agstone, rice hull ash, waste glass powder etc. are used as one after another
Mixing material is applied in manufacture of cement, or is applied in concrete production as mineral admixture, reduces cement raw
Become energy consumption, improve environment, improve cement concrete endurance quality simultaneously.But these mineral admixtures are the easiest
Cause the phenomenons such as cement setting time prolongation, early stage or later strength reduction.
The document producing mineral admixture currently with industry metallurgy slag etc. is numerous, for improving mineral admixture early strength relatively
Low phenomenon, is mainly improved by techniques below in current document:
1) 201210211517.6 1 kinds of high activity slag micropowders of patent and preparation method thereof, patent 201210537602.1
Large dosage slag foam concrete block and preparation method thereof, patent 200810151897.2 superfined flyash base grandidierite
Polymer blends material and preparation method thereof, document " performance of superfined flyash " (silicate journal, 2003) passes through micropowder
The mineral admixture fineness that improves ore grinding slag, slag, flyash etc. improves its activity, but superfine grinding can bring bigger
Energy expenditure, easily produces the problems such as reunion after powder is meticulous simultaneously；
2) 200910131851.9 1 kinds of blending material for high-early-strength concrete of patent, patent 201510270200.3 1 kinds
Composite blend for high-strength concrete and preparation method thereof, 201210240692.8 1 kinds of concrete of patent are with compound
Admixtures etc., by alkali metal ion salt, alkali, alcamines exciting agent equal excitation mineral admixture, improve mineral admixture
Activity, but alkali-activated carbonatite often improves early strength, and later strength is the most relatively low；And national standard is to concrete
The alkali content that additive introduces has done the most external alkali content of restriction and has been not more than 3kg/m3, alkali content is less, poor effect, alkali
Have when content is more and cause alkali-aggregate reaction risk.
3) technology of preparing of patent 99116326.5 high-activity concrete additive and method, " hydrated calcium silicate is brilliant for document
Kind preparation and impact on strength of cement " (material science and technique, 2007) by introducing C-S-H crystal seed, reduce
Hydrated product nucleation barrier, accelerates hydrated cementitious speed.C-S-H seed surface contains a large amount of scission of link and fault of construction simultaneously,
Higher surface free energy gives C-S-H crystal seed adion and the ability of molecule, absorption and the dual function of coring, changes
Become the heat evolution velocity of cement.
The present invention, based on industry byproduct lithium slag and nickel slag, utilizes the high activity of lithium slag and ripe at sulphate aluminium cement
Plus utilizing air entrained concrete leftover pieces to improve the early strength of composite blend as crystal seed under the exciting of material, utilize simultaneously
The later strength that slag powders is higher gives composite blend and ensures with later strength, with super plasticizer regulation composite blend
Workability.
Summary 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 water
Mud and concrete production energy consumption, make full use of industry byproduct and improve the ecological environment, and changes conventional composite mineral admixture
The problem that early strength is on the low side.
Technical scheme: for achieving the above object, a kind of concrete complex mineral blending material of the present invention uses following skill
Art scheme realizes:
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% slag, 5-20% nickel slag, 5-10% aerating concrete waste material, 5-10% sulphoaluminate cement clinker,
0.1-0.5% super plasticizer powder.
Described lithium slag SiO2And Al2O3Content sum is more than 70%.
Described slag 28d activity index is more than 100%.
Described aerating concrete waste material is the leftover pieces produced in production process of gas concrete, through crushing and at 100 DEG C
-150 DEG C of drying.
Described super plasticizer powder is polycarboxylic acid salt's super plasticizer powder or sulfamic acid salt super plasticizer powder, diminishing
Rate more than 30%.
Described admixture grinding fineness is specific surface area 400-600m2/kg。
Beneficial effect: the present invention compared with prior art, has a following obvious advantage:
1) lithium slag contains higher silicon oxide and alchlor content, and its essential mineral consists of quartz, spodumene, stone
Cream, mixes in concrete as admixture, has higher activity.Lithium slag mineral composition contains more Gypsum Fibrosum, volume
Time more, easily produce false set, therefore composite blend mix slag and on the one hand consumes Gypsum Fibrosum consumption in lithium slag,
On the other hand slag has higher later strength fraction；
2) in sulphoaluminate cement clinker, calcium sulphoaluminate cement minerals can excite lithium slag and slag, simultaneously sulfur aluminic acid simultaneously
Calcium cement minerals hydration rate is very fast, on the one hand can improve its early strength, on the other hand can regulate complex mineral and mix
Close and expect setting time；
3) air entrained concrete leftover pieces, in aero-crete factory's amount compared with big and utilization rate is low, or as heat insulating material filling
Material uses, and added value is relatively low, and containing higher silicon and aluminum content in air entrained concrete, wherein aluminum is mainly with aluminate aquation
Product exists, and it reacts with lithium slag or sulphoaluminate cement clinker can generate entringite hydrated product, and silicon is mainly with C-S-H
Gel exists mutually with tobermorite, using air entrained concrete leftover pieces as crystal seed, can reduce hydrated product nucleation barrier,
Accelerate hydrated cementitious speed.
4) regulating complex mineral blending material water requirement with super plasticizer, this complex mineral blending material does not uses alkali as swashing
Send out agent, concrete workability, mechanical property, excellent in durability, consume the industrial by-products such as lithium slag, nickel slag simultaneously,
Environmental 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.
Detailed description of the invention
One concrete complex mineral blending material of the present invention, is formed by following material combined grinding by weight: 40-60%
Lithium slag, 10-30% slag, 5-20% nickel slag, 5-10% aerating concrete waste material, 5-10% sulphoaluminate cement clinker,
0.1-0.5% super plasticizer powder.
Described lithium slag SiO2And Al2O3Content sum is more than 70%.
Described slag 28d activity index is more than 100%.
Described aerating concrete waste material is the leftover pieces produced in production process of gas concrete, through crushing and at 100 DEG C
-150 DEG C of drying.
Described super plasticizer powder is polycarboxylic acid salt's super plasticizer powder or sulfamic acid salt super plasticizer powder, diminishing
Rate more than 30%.
Described admixture grinding fineness is specific surface area 400-600m2/kg。
Embodiment one,
Concrete complex mineral blending material, by following material mixing 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% sulfamic acid
Salt 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 acid are super
Plasticiser powder.
Embodiment four,
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 acid are super
Plasticiser powder.
Embodiment of the present invention Performance Assessment index is with reference to " 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 long
Phase performance and endurance quality test method standard " (GB/T 50082-2009) execution, concrete early-age shrinkage performance uses
CABR-NES contactless concrete shrinkage deformation analyzer, tests concrete early-age shrinkage performance, test environment temperature
(20 ± 2) DEG C, humidity (60 ± 5) %, sampling interval 5min, measure gauge length 435mm.
Comparative example experiment concrete is made up of cement, water, water reducer, coarse aggregate, fine aggregate.The each component of its concrete
Match ratio be cement: sand (fine aggregate): coarse aggregate: water: water reducer is 400: 745: 1055: 165: 6.6.
In embodiment, concrete is made up of cement, composite blend, water, water reducer, coarse aggregate, fine aggregate.Concrete
The match ratio of each component is cement: composite blend: sand (fine aggregate): coarse aggregate: water: water reducer is 200: 200:
745∶1055∶165∶6.6.Composite blend volume is 50%.
The embodiment of the present invention 1～4 prepares C40 concrete specific performance index with comparative example concrete specific performance index such as
Shown in table 1, from table 1, after mixing 50% complex mineral blending material of the present invention, concrete 3d and later stage 28d in early days
Intensity all increases, and concrete seven d shrinkage factor reduces, and seepage-resistant grade improves.
Table 1
Lithium slag of the present invention mixes in concrete, has higher activity.Lithium slag mineral composition contains more Gypsum Fibrosum, volume
Time more, easily produce false set, therefore composite blend mix in slag and on the one hand consume Gypsum Fibrosum consumption in lithium slag,
On the other hand slag has higher later strength fraction；In sulphoaluminate cement clinker, calcium sulphoaluminate cement minerals is permissible
Exciting lithium slag and slag, calcium sulphoaluminate cement minerals hydration rate is very fast simultaneously simultaneously, on the one hand can improve it the strongest
On the other hand degree, can regulate complex mineral blending material setting time；Air entrained concrete leftover pieces, in aero-crete factory
Measuring compared with big and utilization rate is low, or grind and use as insulation material filler, added value is relatively low, contains in air entrained concrete
Higher silicon and aluminum content, wherein aluminum mainly exists with aluminate hydrated product, and silicon is mainly with C-S-H gel and Tuo Bei
Mullite exists mutually, using air entrained concrete leftover pieces as crystal seed, can reduce hydrated product nucleation barrier, accelerate cement
Hydration rate.
Regulating complex mineral blending material water requirement with super plasticizer, this complex mineral blending material does not uses alkali as exciting
Agent, concrete workability, mechanical property, excellent in durability, consume the industrial by-products such as lithium slag, nickel slag, ring simultaneously
Border benefit, economic benefit, social benefit are good.Composite blend the most of the present invention has micro-expansibility, can compensate for coagulation
Soil shrinks, and 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, also include by
The technical scheme that above technical characteristic combination in any is formed.It should be pointed out that, for those skilled in the art
For, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications are also
It is considered as protection scope of the present invention.
Claims (6)
1. a concrete complex mineral blending material, it is characterised in that formed by following material combined grinding by weight:
40-60% lithium slag, 10-30% slag, 5-20% nickel slag, 5-10% aerating concrete waste material, 5-10% sulphate aluminium cement
Grog, 0.1-0.5% super plasticizer powder.
A kind of concrete complex mineral blending material the most according to claim 1, it is characterised in that in described lithium slag
SiO2And Al2O3Weight sum is more than 70%.
A kind of concrete complex mineral blending material the most according to claim 1, it is characterised in that described slag 28d
Activity index is more than 100%.
A kind of concrete complex mineral blending material the most according to claim 1, it is characterised in that described aerating coagulation
Soil waste material is the leftover pieces produced in production process of gas concrete, through crushing and 100 DEG C-150 DEG C drying.
A kind of concrete complex mineral blending material the most according to claim 1, it is characterised in that described super plasticizer
Powder is polycarboxylic acid salt's super plasticizer powder or sulfamic acid salt super plasticizer powder, water-reducing rate more than 30%.
A kind of concrete complex mineral blending material the most according to claim 1, it is characterised in that described admixture powder
Grinding rate is specific surface area 400-600m2/kg。
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106431156A (en) * | 2016-10-24 | 2017-02-22 | 张聪聪 | 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 |
| CN108314396A (en) * | 2018-03-23 | 2018-07-24 | 四川省劲腾环保建材有限公司 | The production method and autoclaved aerated concrete slab of autoclaved aerated concrete slab |
| 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 |
| CN110981322A (en) * | 2020-01-14 | 2020-04-10 | 淮阴工学院 | Ferronickel slag aggregate concrete |
| CN111732358A (en) * | 2020-06-04 | 2020-10-02 | 淮阴工学院 | Lithium slag-based concrete mineral admixture |
| CN111747773A (en) * | 2020-06-30 | 2020-10-09 | 惠州市英建实业有限公司 | Aerated brick produced by using almond shells and preparation method thereof |
| CN112441809A (en) * | 2018-12-17 | 2021-03-05 | 南京绿色增材智造研究院有限公司 | Preparation method of ultrahigh-toughness alkali-activated shotcrete |
| CN112551934A (en) * | 2020-11-26 | 2021-03-26 | 江苏博拓新型建筑材料股份有限公司 | Non-autoclaved and non-autoclaved mineral admixture and preparation method thereof |
| CN114213055A (en) * | 2021-12-29 | 2022-03-22 | 中建西部建设湖南有限公司 | Concrete gelling accelerator and preparation method and application thereof |
| CN115432958A (en) * | 2022-08-25 | 2022-12-06 | 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 |
| CN115477490A (en) * | 2022-09-15 | 2022-12-16 | 四川华西绿舍建材有限公司 | Solid waste based high-performance composite admixture and preparation method thereof |
| CN115819008A (en) * | 2023-02-20 | 2023-03-21 | 西南交通大学 | High-activity and low-shrinkage composite mineral 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 |
| CN117361917A (en) * | 2023-10-30 | 2024-01-09 | 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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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106431156A (en) * | 2016-10-24 | 2017-02-22 | 张聪聪 | 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 |
| CN108314396A (en) * | 2018-03-23 | 2018-07-24 | 四川省劲腾环保建材有限公司 | The production method and autoclaved aerated concrete slab of autoclaved aerated concrete slab |
| CN112441809B (en) * | 2018-12-17 | 2022-04-15 | 南京绿色增材智造研究院有限公司 | Preparation method of ultrahigh-toughness alkali-activated shotcrete |
| CN112441809A (en) * | 2018-12-17 | 2021-03-05 | 南京绿色增材智造研究院有限公司 | Preparation method of ultrahigh-toughness alkali-activated shotcrete |
| 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 |
| CN110981322A (en) * | 2020-01-14 | 2020-04-10 | 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 |
| CN111732358A (en) * | 2020-06-04 | 2020-10-02 | 淮阴工学院 | Lithium slag-based concrete mineral admixture |
| CN111747773A (en) * | 2020-06-30 | 2020-10-09 | 惠州市英建实业有限公司 | Aerated brick produced by using almond shells and preparation method thereof |
| CN112551934A (en) * | 2020-11-26 | 2021-03-26 | 江苏博拓新型建筑材料股份有限公司 | Non-autoclaved and non-autoclaved mineral admixture and preparation method thereof |
| CN114213055A (en) * | 2021-12-29 | 2022-03-22 | 中建西部建设湖南有限公司 | Concrete gelling accelerator and preparation method and application thereof |
| CN115432958A (en) * | 2022-08-25 | 2022-12-06 | 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 |
| 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 |
| CN115477490A (en) * | 2022-09-15 | 2022-12-16 | 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 |
| CN115819008A (en) * | 2023-02-20 | 2023-03-21 | 西南交通大学 | High-activity and low-shrinkage composite mineral admixture and preparation method thereof |
| CN117361917A (en) * | 2023-10-30 | 2024-01-09 | 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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