CN105293965B - A kind of high performance concrete composite blend and preparation method thereof - Google Patents

A kind of high performance concrete composite blend and preparation method thereof Download PDF

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Publication number
CN105293965B
CN105293965B CN201510876770.7A CN201510876770A CN105293965B CN 105293965 B CN105293965 B CN 105293965B CN 201510876770 A CN201510876770 A CN 201510876770A CN 105293965 B CN105293965 B CN 105293965B
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parts
activator
mine tailing
raw
composite blend
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CN105293965A (en
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孙泽斌
孙建博
曹剑
吕世军
王新刚
闫灿刚
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Shandong Sinopowd Building Material Corp
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Shandong Sinopowd Building Material Corp
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention discloses a kind of high performance concrete composite blend and preparation method thereof, it is made by the raw material of following mass fraction:15 parts of 30 60 parts of waste residue, 10 16 parts of mine tailing, 12 parts of desulfurated plaster, 5 12 parts of powder and activator;And disclose preparation method.The beneficial effects of the invention are as follows:First, the raw material of this admixture is derived from waste material, and the resource recycling for realizing solid waste is utilized, and solves stackings, the brought land seizure of burial and environmental pollution;Secondly, the admixture of the present invention is by the processing and its processing to raw material, with more excellent performance, the service behaviour and each phase intensity of concrete can be finally obviously improved, high-durability, high applicability, the high performance concrete of high volume stability is become;Furthermore, cement consumption can be substantially reduced using this admixture, this effect highly significant is dropped.

Description

A kind of high performance concrete composite blend and preparation method thereof
Technical field
The present invention relates to industrial mining industry technical field, more particularly to a kind of high performance concrete composite blend and its preparation Method.
Background technology
Concrete admixture is that, in order to improve concrete performance, using water wisely adjusts strength grade of concrete, in concrete Being mixed during mix natural or artificial can improve the powdered ore material of concrete performance.Answer the development in market, various blending Material arises at the historic moment, performance and the difference of composition due to admixture, and the spread in performance that result in compound is uneven, and effect Also it is not quite similar.Furthermore, the cost of material of admixture is also very high, has aggravated the cost pressure of concrete mixing plant.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of high performance concrete composite blend and its preparation side Method.
In order to realize foregoing invention purpose, the invention provides a kind of high-performance composite concrete admixture, by following matter The raw material for measuring number is made:30-60 parts of waste residue, 10-16 parts of mine tailing, 1-2 parts of desulfurated plaster, 5-12 parts of powder and activator 1-5 Part.
Wherein it is further preferred that being made by the raw material of following mass fraction:55 parts of waste residue, 12 parts of mine tailing, desulfurated plaster 1 3.24 parts of part, 10 parts of powder and activator.
Wherein it is further preferred that the waste residue is made up of flyash and metallurgical slag, wherein, flyash and metallurgical slag Quality parts ratio be:1-2:0.5-1;And/or, the mine tailing be high alumino-silicate type mine tailing, magnesium, iron and silicon hydrochlorate type mine tailing and The mixture of alkaline silicate salt form mine tailing, wherein, high alumino-silicate type mine tailing, magnesium, iron and silicon hydrochlorate type mine tailing and alkaline silicate salt form The quality parts ratio of mine tailing is:1-2:1-2:0.5-1.
Wherein it is further preferred that the main component of the powder for 10-20 parts rubble body, 20-40 parts of dregs and 20-30 parts of queen closer.
Wherein preferred, the activator is made by following component:2-10 parts of sodium hydroxide, 1-8 parts of sodium metasilicate, sulfuric acid 10-30 parts of calcium, 0.1-2 parts of amide-type mixture, 0.1-0.3 parts of cellulose ether, 0.5-1 parts of acrylic acid, cyclic hydrocarbon mixture 1-2 15-30 parts of part, 0.1-1 parts of macromolecule dispersing agent and water.
Further, the activator is made by following component:5 parts of sodium hydroxide, 7 parts of sodium metasilicate, 20 parts of calcium sulfate, 0.5 part of amide-type mixture, 0.2 part of cellulose ether, 0.7 part of acrylic acid, 1 part of cyclic hydrocarbon mixture, 0.4 part of macromolecule dispersing agent and 20 parts of water.
Further, the amide-type mixture is by N- ethyl acetamides, formamide and 2,4- dihydroxy benzoyl amine group Into its quality parts ratio is:0.5-1:0.1-0.5:0.7-1;And/or, the cellulose ether is by hydroxyethyl cellulose, carboxymethyl Hydroxyethyl cellulose, four kinds of composition compositions of ethyl cellulose and carboxymethyl cellulose, wherein, the mass fraction of each composition is:Hydroxyl 1-2 parts of ethyl cellulose, 0.5-1 parts of carboxymethyl hydroxyethyl cellulose, 0.1-0.5 parts of ethyl cellulose and carboxymethyl cellulose 1- 2 parts.
Further, cyclic hydrocarbon mixture is made up of cyclohexene and hexamethylene, and its quality parts ratio is:1-2:0.5-1;With Or, the macromolecule dispersing agent is that AEO and ammonium polyacrylate are constituted, its quality parts ratio is:1-2:0.5- 1。
Wherein, the preparation method of activator comprises the following steps:
The first step, by the various raw materials beyond water removal, sodium hydroxide, sodium metasilicate, calcium sulfate according to each quality parts ratio It is separately added into reactor, it is to be reacted at 50 DEG C to set pressure as 4MPa, temperature, while opening agitating device, is stirred Mix, continue 2 hours, mixture is made;
Second step, sodium hydroxide, sodium metasilicate, calcium sulfate is added to the water according to quality parts ratio, and adds the first step Obtained mixture, is mixed and is stirred, and continues 30 minutes, heating is then carried out at a temperature of 400 DEG C 30 minutes -1 small When, then cool down 2 hours, that is, obtain the activator of powder granule.
In order to achieve the above object, present invention also offers the preparation method of the high performance concrete composite blend, Wherein,
The first step, other raw materials beyond activator are distinguished into feeding to ultra-fine via the rotary feeder with frequency conversion respectively It is ground in vertical mill so that the particle diameter of each raw material reaches 8-12um, and particle diameter is not reached the raw material of requirement again by screening Ground into ultra-fine vertical mill, until particle diameter reaches 8-12um;
Second step, the first step is handled after each raw material deliver to abundant mechanical mixture carried out in mixer, during stirring mixing Between be 10 minutes, add activator, mix 10 minutes, that is, obtain composite blend.
The beneficial effects of the invention are as follows:1. raw material(Flyash, waste residue, mine tailing etc.)Wide material sources, it is easy to obtain, cost It is cheap;It is annual to be calculated according to 1,000,000,000 side's concrete, 200,000,000 tons of all kinds of solid waste can be consumed every year;2. vast scale 50% Replace the cement consumption in concrete, with surprising economic benefit and environmental benefit;Cement 11.3 hundred million can be saved every year Ton, reduces about 6.6 hundred million tons of CO2 emission;3. the concrete of composite blend is added, service behaviour is significantly improved, due to mixing Close the microballon effect in material, space water demand amount is small, internal more reasonably level match somebody with somebody and fine powder material the factor such as filling effect, So that the service behaviour of concrete is significantly improved;4. the concrete of composite blend is added, the performance of its intensity is significantly improved, coagulation Native later strength is advantageously:Early strength improves a lot compared with benchmark sample, the later stage(After 28 days)Intensity have and persistently show The lifting of work.
Embodiment
Describe embodiments of the present invention in detail using embodiment below, whereby to the present invention how application technology means To solve technical problem, and reach the implementation process of technique effect and can fully understand and implement according to this.
The activator of embodiment 1
The activator that the present invention is used, its preparation method comprises the following steps:
It is the first step, 5kg amide-types mixture, 2kg cellulose ethers, 7kg acrylic acid, 10kg cyclic hydrocarbon mixture and 4kg is high Dispersal agent molecule is separately added into reactor, and it is to be reacted at 50 DEG C to set pressure as 4MPa, temperature, while opening stirring dress Put, be stirred, continue 2 hours, mixture is made;
Second step, 50kg sodium hydroxides, 70kg sodium metasilicates and 200kg calcium sulfate added in 200kg water, and add the The mixture that one step is obtained, is mixed and is stirred, and continues 30 minutes, 30 points of heating is then carried out at a temperature of 400 DEG C Clock, then cools down 2 hours, that is, obtains the activator of powder granule.
Wherein, amide-type mixture is by 1.875kgN- ethyl acetamides, 0.625kg formamides and 2.5kg2,4- dihydroxy Benzamide is constituted.
Wherein, cellulose ether is by 0.73kg hydroxyethyl celluloses, 0.39kg carboxymethyl hydroxyethyl celluloses, 0.15kg ethyls Four kinds of composition compositions of cellulose and 0.73kg carboxymethyl celluloses.
Wherein, cyclic hydrocarbon mixture is made up of 6.5kg cyclohexene and 3.5kg hexamethylenes.
Wherein, macromolecule dispersing agent is that 2.6kg AEOs and 1.4kg ammonium polyacrylates are constituted.
The composite blend I of embodiment 2
The invention provides a kind of high-performance composite concrete admixture, it is made by following raw material:Waste residue 30kg, mine tailing 10kg, desulfurated plaster 1kg, powder 5kg and activator 1kg.
Wherein, waste residue is made up of 20kg flyash and 10kg metallurgical slags, and mine tailing is the high alumino-silicate type mine tailings of 4kg, 4kg The mixture of magnesium, iron and silicon hydrochlorate type mine tailing and 2kg alkaline silicate salt form mine tailings.
Wherein, the main component of powder is 1kg rubbles body, 2kg dregs and 2kg queen closers.
Wherein, the activator used is the activator that embodiment 1 is obtained.
Preparation process is:
The first step, other raw materials beyond activator are distinguished into feeding to ultra-fine via the rotary feeder with frequency conversion respectively It is ground in vertical mill so that the particle diameter of each raw material reaches 8um, and screening reenters the raw material that particle diameter does not reach requirement Ground in ultra-fine vertical mill, until particle diameter reaches 8um;
Second step, the first step is handled after each raw material deliver to abundant mechanical mixture carried out in mixer, during stirring mixing Between be 10 minutes, add activator, mix 10 minutes, that is, obtain composite blend.
The composite blend II of embodiment 3
The invention provides a kind of high-performance composite concrete admixture, it is made by following raw material:By following mass fraction Raw material be made:Waste residue 60kg, mine tailing 16kg, desulfurated plaster 2kg, powder 12kg and activator 5kg.
Wherein, waste residue is made up of 40kg flyash and 20kg metallurgical slags;Mine tailing be the high alumino-silicate type mine tailings of 6.4kg, The mixture of 6.4kg magnesium, iron and silicons hydrochlorate type mine tailing and 3.2kg alkaline silicate salt form mine tailings.
Wherein, the main component of powder is 2.67kg rubbles body, 5.33kg dregs and 4kg queen closers.
Wherein, the activator used is the activator that embodiment 1 is obtained.
Preparation process is:
The first step, other raw materials beyond activator are distinguished into feeding to ultra-fine via the rotary feeder with frequency conversion respectively It is ground in vertical mill so that the particle diameter of each raw material reaches 12um, and screens again to enter the raw material that particle diameter does not reach requirement Enter in ultra-fine vertical mill and grind, until particle diameter reaches 12um;
Second step, the first step is handled after each raw material deliver to abundant mechanical mixture carried out in mixer, during stirring mixing Between be 10 minutes, add activator, mix 10 minutes, that is, obtain composite blend.
The composite blend III of embodiment 4
The invention provides a kind of high-performance composite concrete admixture, it is made by following raw material:Waste residue 55kg, mine tailing 12kg, desulfurated plaster 1kg, powder 10kg and activator 3.24kg.
Wherein, waste residue is made up of 35.9kg flyash and 19.1kg metallurgical slags;Mine tailing is the high alumino-silicate types of 4.74kg The mixture of mine tailing, 4.74kg magnesium, iron and silicons hydrochlorate type mine tailing and 2.52kg alkaline silicate salt form mine tailings.
Wherein, the main component of powder is 2.14kg rubbles body, 4.29kg dregs and 3.57kg queen closers.
Wherein, the activator used is the activator that embodiment 1 is obtained.
Preparation process is:
The first step, other raw materials beyond activator are distinguished into feeding to ultra-fine via the rotary feeder with frequency conversion respectively It is ground in vertical mill so that the particle diameter of each raw material reaches 10um, and screens again to enter the raw material that particle diameter does not reach requirement Enter in ultra-fine vertical mill and grind, until particle diameter reaches 10um;
Second step, the first step is handled after each raw material deliver to abundant mechanical mixture carried out in mixer, during stirring mixing Between be 10 minutes, add activator, mix 10 minutes, that is, obtain composite blend.
Project contrast test
Data analysis is carried out for Linyi Tianyuan concrete works Co., Ltd concrete project.
Control group is that obtained C30 concrete is mixed without using admixture;First group uses composite blend(I)Mix C30 concrete.Second group uses composite blend(II)The C30 concrete mixed.3rd group uses composite blend(III)Support by the arm The C30 concrete of sum.
Table 1 is raw material Basic Information Table
(One)Active contrast is carried out for first group, second group and the 3rd group of composite blend.Obtain following data knot Really:Table 2 is active comparing result
By table 2 it is known that the activity for the composite blend that embodiment 1-3 is obtained, the 1st, all have within 3,7,14 days compared with Good activity, and continue to that 28 days activity have further increased, maintain higher activity.
(Two)3 test groups and 1 control group is selected to carry out 1M3The improvement contrast of concrete materials and its performance.
Table 3 is the Cost comparisons of 4 groups
By table 3 it is known that consumption and contrast per 4 groups of side's concrete materials, it is known that with contrast groups phase Than the cement consumption of 3 embodiment groups greatly reduces to cost of the cost relative to contrast groups of 50%, and three embodiment groups 25.4 yuan, 25.6 yuan and 25.5 yuan are reduced respectively.
(Three)Slump and the intensity detection of 1 day, 3 days, 7 days, 14 days and 28 days are carried out respectively for 4 groups.
As a result such as table 4.
By table 4 it is known that the composite blend that 3 embodiment groups add activator of the present invention is used for concrete production, 28 days compression strength of concrete can be made to improve 8-10MPa, the service behaviour and mechanical property of concrete is substantially increased.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.

Claims (7)

1. a kind of high performance concrete composite blend, it is characterised in that be made by the raw material of following mass fraction:Waste residue 30- 1-5 parts of 60 parts, 10-16 parts of mine tailing, 1-2 parts of desulfurated plaster, 5-12 parts of powder and activator;
The waste residue is made up of flyash and metallurgical slag, wherein, the quality parts ratio of flyash and metallurgical slag is:1-2: 0.5-1;And/or, the mine tailing is the mixed of high alumino-silicate type mine tailing, magnesium, iron and silicon hydrochlorate type mine tailing and alkaline silicate salt form mine tailing Compound, wherein, the quality parts ratio of high alumino-silicate type mine tailing, magnesium, iron and silicon hydrochlorate type mine tailing and alkaline silicate salt form mine tailing is: 1-2:1-2:0.5-1;
The main component of the powder is 10-20 parts of rubble body, 20-40 parts of dregs and 20-30 parts of queen closer;
The activator is made by following component:2-10 parts of sodium hydroxide, 1-8 parts of sodium metasilicate, 10-30 parts of calcium sulfate, acid amides 0.1-2 parts of class mixture, 0.1-0.3 parts of cellulose ether, 0.5-1 parts of acrylic acid, 1-2 parts of cyclic hydrocarbon mixture, macromolecule dispersing agent 0.1-1 parts and 15-30 parts of water.
2. high performance concrete composite blend according to claim 1, it is characterised in that by the original of following mass fraction Material is made:3.24 parts of 55 parts of waste residue, 12 parts of mine tailing, 1 part of desulfurated plaster, 10 parts of powder and activator.
3. high performance concrete composite blend according to claim 1, it is characterised in that the activator by below into Divide and be made:5 parts of sodium hydroxide, 7 parts of sodium metasilicate, 20 parts of calcium sulfate, 0.5 part of amide-type mixture, 0.2 part of cellulose ether, third 20 parts of 0.7 part of olefin(e) acid, 1 part of cyclic hydrocarbon mixture, 0.4 part of macromolecule dispersing agent and water.
4. high performance concrete composite blend according to claim 1, it is characterised in that the amide-type mixture by N- ethyl acetamides, formamide and 2,4- dihydroxy benzoyl amine are constituted, and its quality parts ratio is:0.5-1:0.1-0.5:0.7- 1;And/or, the cellulose ether is by hydroxyethyl cellulose, carboxymethyl hydroxyethyl cellulose, ethyl cellulose and carboxymethyl cellulose Four kinds of composition compositions of element, wherein, the mass fraction of each composition is:1-2 parts of hydroxyethyl cellulose, carboxymethyl hydroxyethyl cellulose 1-2 parts of 0.5-1 parts, 0.1-0.5 parts of ethyl cellulose and carboxymethyl cellulose.
5. high performance concrete composite blend according to claim 1, it is characterised in that cyclic hydrocarbon mixture is by cyclohexene With hexamethylene composition, its quality parts ratio is:1-2:0.5-1;And/or, the macromolecule dispersing agent is aliphatic alcohol polyethenoxy Ether and ammonium polyacrylate are constituted, and its quality parts ratio is:1-2:0.5-1.
6. high performance concrete composite blend according to claim 1, it is characterised in that the preparation method bag of activator Include following steps:
The first step, the various raw materials beyond water removal, sodium hydroxide, sodium metasilicate, calcium sulfate are distinguished according to each quality parts ratio Add in reactor, it is to be reacted at 50 DEG C set pressure as 4Mpa and temperature, while unlatching agitating device, is stirred, Continue 2 hours, mixture is made;
Second step, sodium hydroxide, sodium metasilicate, calcium sulfate is added to the water according to quality parts ratio, and adds the first step and obtained Mixture, mixed and stirred, continue 30 minutes, then at a temperature of 400 DEG C carry out heating -1 hour 30 minutes, so Cool down 2 hours afterwards, that is, obtain the activator of powder granule.
7. the high performance concrete composite blend according to any one of claim 1 to 6, it is characterised in that preparation method Comprise the following steps:
The first step, other raw materials beyond activator are distinguished into feeding to ultra-fine Vertical Mill via the rotary feeder with frequency conversion respectively It is ground in machine so that the particle diameter of each raw material reaches 8-12um, and screening reenters the raw material that particle diameter does not reach requirement Ground in ultra-fine vertical mill, until particle diameter reaches 8-12um;
Second step, the first step is handled after each raw material deliver to abundant mechanical mixture carried out in mixer, stirring incorporation time is 10 minutes, activator is added, mixes 10 minutes, that is, obtains composite blend.
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CN1948206A (en) * 2005-10-14 2007-04-18 建筑研究及技术有限责任公司 Accelerating mixture of concrete
CN101844882B (en) * 2010-05-14 2012-12-19 武汉理工大学 Composite portland cement and preparation method thereof
CN102093011A (en) * 2010-11-29 2011-06-15 司密花 Burning-free block brick prepared from bulky industrial waste residues
CN102093004A (en) * 2010-12-13 2011-06-15 郭东京 Composite tailing non-fired and non-steamed building block brick and preparation method thereof
CN102173701A (en) * 2010-12-28 2011-09-07 刘丽华 Non-autoclaved waste residue sand lime brick and preparation method thereof
CN103274658B (en) * 2013-01-14 2015-08-12 虞克夫 The method of industrial residue, solid dangerous waste recycling
CN103342491B (en) * 2013-07-10 2015-09-30 武汉理工大学 Iron tailings based composite mineral blending material and preparation technology thereof
CN104944828B (en) * 2015-06-19 2017-05-17 阚春明 Cement-based high-molecular polymer waterproof mortar additive and preparation method and application thereof

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