CN101921077A - Air quench steel slag fine aggregate composite slag powder bonding material - Google Patents
Air quench steel slag fine aggregate composite slag powder bonding material Download PDFInfo
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- CN101921077A CN101921077A CN2010102638201A CN201010263820A CN101921077A CN 101921077 A CN101921077 A CN 101921077A CN 2010102638201 A CN2010102638201 A CN 2010102638201A CN 201010263820 A CN201010263820 A CN 201010263820A CN 101921077 A CN101921077 A CN 101921077A
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- slag
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- fine aggregate
- quench steel
- steel slag
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The invention relates to an air quench steel slag fine aggregate composite slag powder bonding material which solves the problems that the traditional steel slag can not completely replace cement to produce the bonding material, has high production cost and can only be used for preparing concrete the strength of which is not greater than C30. The invention has the technical scheme that the bonding material comprises composite slag powder and air quench steel slag, wherein the weight ratio of the composite slag powder to air quench steel slag fine aggregate is 1:1-3; the composite slag powder is formed by the mixture of 8-35 percent of composite material and 65-92 percent of slag powder in weight percentage, wherein the composite material is prepared from at least one of 25-99 percent of gypsum, 0-75 percent of portland cement clinker and 0-5 percent of additive in weight percentage through levigation. The bonding material completely replaces the cement bonding material and meanwhile has the advantages of high strength grade, simple production process, low production cost and stable product performance and is especially suitable for preparing the high-strength concrete with good working performance and is suitable for various projects with higher demands on the rupture strength.
Description
Technical field
The present invention relates to a kind of construction work agglutination material, a kind of specifically air quench steel slag fine aggregate composite slag powder bonding material.
Background technology
During concrete batching usually with cement as agglutination material, be equipped with sand, rubble and water again and stir into concrete.The application of slag in concrete batching is most commonly in steel slag instead sand concrete batching, for further improving its added value, Recent study personnel consider slag is applied in the agglutination material, disclosed method has two kinds: a kind of is that slag micro powder is added in the cement as Additive, can eliminate grindability difference problem in the steel slag cement production, slag is by being milled down to certain fineness, can farthest remove metallic iron, by superfine pulverizing the material crystalline structure is recombinated, the particle surface situation changes, surface energy improves, the activity of mechanical excitation slag, the characteristic of performance hydraulic glue gel material.But it is only with Additive form and cement mixing, and place of cement, and add-on fully is few, and agglutination material is still based on cement, and cost reduces not obvious.In addition, common slag micro powder need be with the particle slag of certain particle size oven dry, levigate, and slag is poor with cement comparison grindability, can cause production cost to increase considerably on the contrary.Another kind is to utilize slag and slag to be combined into agglutination material to substitute existing cement gel material fully, as the patent No.: 01106474, a kind of agglutination material that is composited by slag and slag was disclosed on September 25th, 2002, two kinds of components of complex ore slag fine powder and slag thin aggregate are formed by weight 1: 1～2, wherein complex ore slag fine powder (wt%) is made up of through levigate 70～85 blast-furnace slag, 8～20 cement clinker and 7～11 gypsum, and being used to prepare mortar and strength grade is that C30 is with interior concrete.Slag thin aggregate is " time of storing up only sieves through granulated processed and magnetic separation, and it joins the slag of the particle diameter of level less than 5mm naturally " in this technical scheme in half a year.This agglutination material is place of cement fully, and by embodiment as can be known, this agglutination material is place of cement fully, and by embodiment as can be known, the concrete of preparation 3 days and 28 days ultimate compression strength reach as high as 34Mpa, 57Mpa, and folding strength reaches as high as 7.2Mpa and 9.4Mpa.
Summary of the invention
The purpose of this invention is to provide a kind of air quench steel slag fine aggregate composite slag powder bonding material, in the place of cement agglutination material, have strength grade height, production technique is simple, production cost is low, product performance are stable advantage, be specially adapted to prepare good high-strength concrete of workability and the higher various engineerings of antagonism folding requirement of strength.
Air quench steel slag fine aggregate composite slag powder bonding material of the present invention, form by complex ore ground-slag and ak quench steel slag, the weight ratio of complex ore ground-slag and ak quench steel slag fine aggregate is 1: 1～3, and described complex ore ground-slag is that combination material 8～35% and slag powders 65～92% mixing are formed by weight percent; Wherein, combination material is 25～99% gypsum by weight percent, and at least a through levigate composition in 0～75% Portland clinker and 0～5% admixture, and it is 100% that the three adds up to total amount, and specific surface area is greater than 400m
2/ kg.
The weight ratio of described complex ore ground-slag and ak quench steel slag fine aggregate is 1: 3.
Described complex ore ground-slag is combination material 20～30% and slag powders 70～80% by weight percent.
Described combination material is that 99% gypsum and 1% admixture are formed by weight percent.
Ak quench steel slag is to utilize under the high-temperature liquid state gravitation between the slag molecule less, aloft the high-temperature liquid state slag that falls stream thigh is smashed rapidly with high velocity air and to be fine drop, and with the directed flight of air-flow, in flight course, be cooled to the semi-solid state slag particle rapidly, disperse then to fall into the water, be cooled to the slag of normal temperature rapidly, and particle diameter is less than the natural grading of 4.75mm, the ak quench steel slag of natural moisture content.The ak quench steel slag fine aggregate is with common slag thin aggregate difference, the characteristics of this slag are that the high-temperature liquid state slag is under the wind effect of quenching, forming uniform spherical shape falls into the water, the slag that its sphericity is handled apparently higher than other method, this uniform spheroidal slag cooling evenly, rapidly, formation is based on the tiny Dicalcium Phosphate (Feed Grade) of particle and the uniform distribution structure of glassy phase, glassy phase is netted the Dicalcium Phosphate (Feed Grade) particle is wrapped up, a spot of free calcium oxide also is wrapped in the glassy phase, the preparation of complex ore ground-slag is directed to the slag performance characteristics, and ettringite and hydrated calcium silicate that slag and complex ore ground-slag are generated in hydration reaction interweave closely; Spheric ak quench steel slag concrete batching has good operation simultaneously, thus the high-strength concrete and the higher various engineerings of antagonism folding requirement of strength that make agglutination material of the present invention be applicable to that the preparation workability is good.In slag thin aggregate+complex ore ground-slag+aqueous systems, slag and slag interpenetrate, common aquation.The initial phase after adding water, the Ca that generates in the ak quench steel slag fine aggregate (OH)
2Water-soluble rapidly with gypsum, the simultaneous excitation slag makes scoriaceous vitreous structure dissociate Ca
2+, Al
3+, Si
4+, OH
-1Plasma enters in the solution, rapid water generation reaction Calucium Silicate powder and ettringite, because various ionic are different with state in conjunction with quantity, can generate different types of hydrated silicate, aquation sulplo-aluminate, from the crystalline microtexture, certain simple aquation mineral can not obtain the highest intensity, by many mineral gum material of two or more hydrated calcium silicates and other aquation mineral compositions, its intensity is only the highest, because can form the finest and close microlitic structure like this.So a kind of just many mineral gum material of agglutination material of the present invention.The complex ore ground-slag is made up of combination material and slag powders, fundamental component in the combination material is a gypsum, can also add in Portland clinker or the admixture any as required, but activated slag after gypsum is water-soluble, scoriaceous vitreous structure is dissociated, and participate in reaction, and generating aquation sulplo-aluminate hydrated product, add-on is to determine according to the stability requirement of requirement that participates in hydration reaction and agglutination material.Portland clinker mainly is to play embryos in the agglutination material hydration process, and is comparatively obvious to the raising of agglutination material early strength, also participates in hydration reaction simultaneously, and add-on is to determine according to the different states of slag.Admixture mainly is a hydration reaction process of quickening agglutination material, improves the compact crystallization degree, can be tensio-active agent, as MF, NF, NNO, FDN, CRS etc.; Also can be the nano level weighting material, as silicon ash etc.; Also can be that conditioning agent promotes the binder paste sclerosis, as calcium chloride etc.Add-on is determined according to the standard schedule of admixture.Preferably can adopt the combination of gypsum and admixture, and not add Portland clinker fully, thereby can significantly reduce production costs and not influence every performance of product itself.Described slag powders can or be purchased slag for blast-furnace slag should meet the granulated blast-furnace slag that GB/T 203 is used for cement, and slag powders should meet the GBFS that GB/T 18046 is used for cement and concrete.
Air quench steel slag fine aggregate composite slag powder bonding material of the present invention can add sand, rubble and water mix and become concrete; Also can not add rubble, add sand and become high-intensity particulate concrete (being commonly referred to mortar) with the water mix, be used to make thin-wall member; Also can add direct water mix place of cement mortar.Its add-on does not have special requirement, can be with reference to the usage quantity of existing cement bond material.
Advantage:
1, the present invention has selected the important component of ak quench steel slag as agglutination material especially, its particle diameter and sand are suitable, be spherical shape, good workability does not need through any post-production and screening, does not have and stores up time limitation, allocating the complex ore ground-slag that processes into mixes and just becomes agglutination material and use, production technique is very simple, and the agglutination material of preparation has good hydration activity, and aquation generates the enhydrite gum material can generate different types of hydrated silicate, aquation sulplo-aluminate.So a kind of just many mineral gum material of agglutination material of the present invention; place of cement fully; mix corresponding water, sand and/or stone and can prepare high-intensity mortar or concrete; as the building agglutination material is to improve the effective ways that utilize added value; can reduce and produce the required a large amount of energy consumptions of cement, it and environmental improvement, environment protection, elimination slag do harm to and promote that national economy sustainable development is closely related.
2, cost is low: the composition of agglutination material is ak quench steel slag fine aggregate and complex ore ground-slag, the concrete of agglutination material preparation of the present invention and cement concrete are relatively, the price of its complex ore ground-slag is lower than cement, the price of slag is low again in sand, and the consumption of complex ore ground-slag in concrete be less than cement (cement is the highest in coagulation soil species unit price), reduced the expense of raw materials cost by contrast.
Be that the concrete starting material of preparation C30 are formed and the cost analysis contrast below.
(1) conventional cement concrete
According to material of construction application manual preparation C30 concrete, selecting the strength of cement grade for use is 32.5, and its every cubic meter of concrete raw material consists of:
Cement: yellow ground: rubble=394kg: 620kg: 1345kg
The prices of raw and semifnished materials: 260 yuan/ton of cement; 30 yuan/ton of yellow ground; 40 yuan/ton of rubbles.
The cement concrete material cost valency of computed strength grade C30 is 174.84 yuan/M
3
(2) concrete of agglutination material preparation of the present invention
The concrete density of determining agglutination material preparation of the present invention is 2.45t/M
3, deduct every cubic metre of native proportion of raw material and be:
Complex ore slag fine powder: cylinder slag thin aggregate: yellow ground: rubble=1: 1.5: 1.5: 4.5
Be that every cubic meter of concrete raw-material weight consists of:
Complex ore slag fine powder: cylinder slag thin aggregate: yellow ground: rubble=276kg: 415kg: 415kg: 1244kg.
The prices of raw and semifnished materials: 230 yuan/ton of complex ore slag fine powders; 10 yuan/ton of cylinder slag thin aggregates; 30/ ton of yellow ground; 40/ ton of rubble.
The concrete raw material cost price of the agglutination material preparation of the present invention of computed strength grade C30 is 129.84 yuan/M
3
Suitably regulate strength grade and form for the C30 concrete material, its strength grade can be brought up to C35, and promptly raw material consists of:
Complex ore slag fine powder: cylinder slag thin aggregate: yellow ground: rubble=1: 1.5: 1.5: 4
Calculate by above condition, the concrete raw material cost price of the invention agglutination material preparation of strength grade C35 is 132.03 yuan/M
3
The slag thin aggregate concrete is brought up to C35 from strength grade C30, in raw materials variations, suitably reduced the rubble consumption, corresponding increase complex ore slag fine powder and yellow ground quantity, the material cost that its every cubic meter of concrete increases only is 2.19 yuan, and this is because correspondingly increased cheapest slag consumption.
(3) raw materials cost price comparison
By (1), (2) as can be known, the preparation strength grade is the concrete of C30, and the material cost valency of conventional cement concrete is 174.84 yuan/M
3, the concrete material cost valency of agglutination material preparation of the present invention is 129.84 yuan/M
3The preparation strength grade is that the concrete raw material cost price of C35 agglutination material preparation of the present invention is 132.03 yuan/M
3From raw material form and cost analysis as seen, the preparation strength grade is C30, C35 concrete, the concrete of agglutination material preparation of the present invention hangs down more than 42 yuan than the price of every cubic metre of conventional cement concrete.In addition, improving the strength grade of agglutination material concrete batching, mainly is the volume of regulating complex ore ground-slag and cylinder slag thin aggregate, and the unit price of its complex ore ground-slag is lower than cement, consumption in the unit cubic meter of concrete also is no more than cement, and the unit price of slag is lower than sand again.And when making cement, improving the consumption that concrete strength need improve the cement intensity grade and increase cement, its cost improves greatly.The intensity of concrete batching is high more, uses the bright agglutination material of this law bigger more than the cost advantage of the concrete batching that uses cement.
3, the sand-cement slurry of preparing by agglutination material of the present invention, press Test method for strength of hydraulic cement mortar, cement mortar strength meets silicate cement 62.5 strength grade indexs, and early strength height, ultimate compression strength can reach more than 45 in 3 days, folding strength is very outstanding, and folding strength can reach more than the 10MPa in 3 days, and folding strength can be more than 15MPa in 28 days.Agglutination material is pressed the steaming stability to meet cement and is pressed steaming stability index.
4, the concrete of the agglutination material of the present invention C30 that not only can prepare, can also prepare the higher strong concrete of label, the C70 concrete of preparation meets the technical indicator of strength grade, its 3 days ultimate compression strength can reach more than the 77.9MPa, ultimate compression strength can reach more than the 91.5MPa in 28 days, and 60 days, 150 days intensity continues to increase.And concrete construction is functional,, divergence, emptying time change very little in quiet contrast index after stopping 5 hours.
Embodiment
Embodiment 1
Taking by weighing complex ore slag fine powder and particle diameter is that 0～4.75mm natural water-bearing ak quench steel slag is mixed with agglutination material A1 by weight 1: 2 uniform mixing.Wherein, the complex ore ground-slag calculates with weight percent 100%, and the combination material accounts for 25%, slag powders 75%.Combination material (calculating) with weight percent 100% be the Portland clinker of 25% gypsum and 75% through levigate composition, specific surface area is greater than 400m
2/ kg.
Embodiment 2
Taking by weighing complex ore slag fine powder and particle diameter is that 0～4.75mm natural water-bearing ak quench steel slag is mixed with agglutination material A2 by weight 1: 1 uniform mixing.Wherein, the complex ore ground-slag calculates with weight percent 100%, and the combination material accounts for 8%, slag powders 92%.Combination material (calculating) with weight percent 100% be the admixture MF of 60% gypsum, 35% Portland clinker and 5% through levigate composition, specific surface area is greater than 400m
2/ kg.
Embodiment 3
Taking by weighing complex ore slag fine powder and particle diameter is that 0～4.75mm natural water-bearing ak quench steel slag is mixed with agglutination material A3 by weight 1: 3 uniform mixing.Wherein, the complex ore ground-slag calculates with weight percent 100%, and the combination material accounts for 20%, slag powders 80%.Combination material (calculating) with weight percent 100% be the admixture NNO of 99% gypsum and 1% through levigate composition, specific surface area is greater than 400m
2/ kg.
Embodiment 4
Taking by weighing complex ore slag fine powder and particle diameter is that 0～4.75mm natural water-bearing ak quench steel slag is mixed with agglutination material A4 by weight 1: 2 uniform mixing.Wherein, the complex ore ground-slag calculates with weight percent 100%, and the combination material accounts for 35%, slag powders 65%.Combination material (calculating) with weight percent 100% be the admixture FDN of 25% gypsum, 73% Portland clinker and 2% through levigate composition, specific surface area is greater than 400m
2/ kg.
Embodiment 5
With 1350g agglutination material A1,675g ISO benchmark sand, the water consumption 1600ml that water consumption is chosen in degree of mobilization 165 ± 5mm scope by the BG/T2419 Test method for fluidity of cement mortar is hybridly prepared into cement mortar B1, prepares strength of test block by Test method for strength of hydraulic cement mortar and the results are shown in Table 1.
Embodiment 6
Take by weighing complex ore ground-slag 394.7kg/m
3(slag powders 293kg/m
3, admixture calcium chloride 4.7kg/m
3, gypsum 29kg/m
3, Portland clinker 68kg/m
3), 0～4.75 natural water-bearing ak quench steel slag 600kg/m
3, add sand 260kg/m
3, rubble 1200kg/m
3, water consumption 160kg/m
3Be mixed with concrete C1, the results are shown in Table 1 by normal concrete mechanical test method check strength of test block.
Embodiment 7
Take by weighing complex ore ground-slag 455.4kg/m
3(slag powders 338kg/m
3, admixture NNO5.4kg/m
3, gypsum 34kg/m
3, Portland clinker 78kg/m
3), 0～4.75mm natural water-bearing ak quench steel slag 800kg/m
3, add rubble 1200kg/m
3, water consumption 160kg/m
3, concrete batching C2 the results are shown in Table 1 by normal concrete mechanical test method check strength of test block.
After above-mentioned starting material are mixed thoroughly by the concrete requirement, measure slump 265mm, divergence 670mm, emptying time 5 seconds; Quiet mensuration slump 260mm after 5 hours, divergence 650mm, the emptying time 7 seconds of stopping.As seen this concrete construction is functional,, divergence, emptying time change very little in quiet contrast index after stopping 5 hours.
Embodiment 8
Take by weighing complex ore ground-slag 559kg/m
3(slag powders 412.5kg/m
3, admixture silicon ash 9kg/m
3, gypsum 41kg/m
3, Portland clinker 96.5kg/m
3), 0～4.75mm natural water-bearing ak quench steel slag 800kg/m
3, add rubble 1100kg/m
3, admixture 9.0kg/m
3, water consumption 145kg/m
3, concrete batching C3 the results are shown in Table 1 by normal concrete mechanical test method check strength of test block.
Agglutination material is pressed and is steamed the stability experiment:
Take by weighing 900g agglutination material A1, water consumption is pressed the testing method of GB1346, the water yield that slurry when choosing with examination awl submergence depth 26 ± 2mm adds, preparation agglutination material mortar D1, the process of mixing and stirring is undertaken by the regulation of GB/T17671, test specimen is made and test is undertaken by the GB/T750 Autoclave method for soundness of portland cement, article 2, test specimen pressure steaming rate of expansion measurement result is 0.049%, 0.042%, average 0.046%, press steam stability qualified (the GB/T750 regulation press steam rate of expansion be not more than 0.5% for pressing to steam stability qualified).
Table 1 strength of cement mortar assay
Claims (5)
1. air quench steel slag fine aggregate composite slag powder bonding material, it is characterized in that, form by complex ore ground-slag and ak quench steel slag, the weight ratio of complex ore ground-slag and ak quench steel slag fine aggregate is 1: 1～3, and described complex ore ground-slag is that combination material 8～35% and slag powders 65～92% mixing are formed by weight percent; Wherein, combination material is 25～99% gypsum by weight percent, and at least a through levigate composition in 0～75% Portland clinker and 0～5% admixture, and it is 100% that the three adds up to total amount, and specific surface area is greater than 400m
2/ kg.
2. air quench steel slag fine aggregate composite slag powder bonding material as claimed in claim 1 is characterized in that, the weight ratio of described complex ore ground-slag and ak quench steel slag fine aggregate is 1: 3.
3. air quench steel slag fine aggregate composite slag powder bonding material as claimed in claim 1 is characterized in that, described complex ore ground-slag is that combination material 20～30% and slag powders 70～80% are formed by weight percent.
4. air quench steel slag fine aggregate composite slag powder bonding material as claimed in claim 1 is characterized in that, described combination material is that 99% gypsum and 1% admixture are formed by weight percent.
5. as each described air quench steel slag fine aggregate composite slag powder bonding material of claim 1-5, it is characterized in that described admixture is at least a in any tensio-active agent, nano level weighting material silicon ash or conditioning agent calcium chloride among MF, NF, NNO, FDN, the CRS.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503325A (en) * | 2011-09-26 | 2012-06-20 | 武汉钢铁(集团)公司 | Plaster dry powder for hot pouring steel slag construction and preparation method of plaster dry powder |
| CN102531425A (en) * | 2011-12-31 | 2012-07-04 | 钢铁研究总院 | Composite doping material of air-quenched steel slag and blast furnace slag and preparation method of composite doping material |
| CN102765897A (en) * | 2012-07-20 | 2012-11-07 | 泰州振昌工业废渣综合利用有限责任公司 | Composite micro-powder made of mineral slag and steel slag |
| CN111777352A (en) * | 2020-07-07 | 2020-10-16 | 马鞍山马钢嘉华商品混凝土有限公司 | Steel wind-quenching solid waste composite micro-powder superfine aggregate and application thereof in concrete |
| CN111978017A (en) * | 2020-07-29 | 2020-11-24 | 马鞍山钢铁股份有限公司 | Bank protection engineering material and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101492261A (en) * | 2008-12-17 | 2009-07-29 | 武汉钢铁(集团)公司 | Steel scoria tail mud composite slag micro mist agglutination material |
-
2010
- 2010-08-25 CN CN2010102638201A patent/CN101921077A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101492261A (en) * | 2008-12-17 | 2009-07-29 | 武汉钢铁(集团)公司 | Steel scoria tail mud composite slag micro mist agglutination material |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503325A (en) * | 2011-09-26 | 2012-06-20 | 武汉钢铁(集团)公司 | Plaster dry powder for hot pouring steel slag construction and preparation method of plaster dry powder |
| CN102531425A (en) * | 2011-12-31 | 2012-07-04 | 钢铁研究总院 | Composite doping material of air-quenched steel slag and blast furnace slag and preparation method of composite doping material |
| CN102765897A (en) * | 2012-07-20 | 2012-11-07 | 泰州振昌工业废渣综合利用有限责任公司 | Composite micro-powder made of mineral slag and steel slag |
| CN102765897B (en) * | 2012-07-20 | 2013-08-21 | 泰州振昌工业废渣综合利用有限责任公司 | Composite micro-powder made of mineral slag and steel slag |
| CN111777352A (en) * | 2020-07-07 | 2020-10-16 | 马鞍山马钢嘉华商品混凝土有限公司 | Steel wind-quenching solid waste composite micro-powder superfine aggregate and application thereof in concrete |
| CN111978017A (en) * | 2020-07-29 | 2020-11-24 | 马鞍山钢铁股份有限公司 | Bank protection engineering material and preparation method thereof |
| CN111978017B (en) * | 2020-07-29 | 2022-06-21 | 马鞍山钢铁股份有限公司 | Bank protection engineering material and preparation method thereof |
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Application publication date: 20101222 |