CN105293965A - High-performance concrete composite admixture and preparation method thereof - Google Patents
High-performance concrete composite admixture and preparation method thereof Download PDFInfo
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- CN105293965A CN105293965A CN201510876770.7A CN201510876770A CN105293965A CN 105293965 A CN105293965 A CN 105293965A CN 201510876770 A CN201510876770 A CN 201510876770A CN 105293965 A CN105293965 A CN 105293965A
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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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Abstract
The invention discloses a high-performance concrete composite admixture and a preparation method thereof. The high-performance concrete composite admixture is prepared from the following raw materials in parts by mass: 30-60 parts of waste residues, 10-16 parts of tailings, 1-2 parts of desulfurization gypsum, 5-12 parts of powder and 1-5 parts of an activating agent. The invention also discloses the preparation method of the high-performance concrete composite admixture. The high-performance concrete composite admixture disclosed by the invention has the following beneficial effects: firstly, the raw materials of the admixture are taken from wastes to realize recycling utilization of solid wastes and solve land occupation and environmental pollution caused by stacking and burying; secondly, the admixture disclosed by the invention, by virtue of treatment and processing of the raw materials, has more excellent performance, so that the working performance and strength of each stage of concrete can be finally promoted significantly, and then the concrete becomes high-performance concrete with high durability, high applicability and high volume stability; and moreover, the admixture can greatly reduce the use level of cement and is very significant in cost reducing effect.
Description
Technical field
The present invention relates to industrial mining industry technical field, particularly a kind of high performance concrete composite blend and preparation method thereof.
Background technology
Concrete admixture is to improve concrete performance, water saving, regulates strength grade of concrete, mixes the natural or artificial powdered ore material that can improve concrete performance when concrete mixing.Answer the development in market, various adulterants arises at the historic moment, and due to the performance of adulterant and the difference of composition, the spread in performance that result in compound is uneven, and effect is also not quite similar.Moreover the raw materials cost of adulterant is also very high, has increased the weight of the cost pressure of concrete mixing plant.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of high performance concrete composite blend and preparation method thereof.
In order to realize foregoing invention object, the invention provides a kind of high-performance composite concrete adulterant, being obtained by the raw material of following mass fraction: waste residue 30-60 part, mine tailing 10-16 part, desulfurated plaster 1-2 part, powder 5-12 part and activator 1-5 part.
Wherein preferred further, obtained by the raw material of following mass fraction: 55 parts, waste residue, mine tailing 12 parts, desulfurated plaster 1 part, powder 10 parts and 3.24 parts, activator.
Wherein preferred further, described waste residue is made up of flyash and metallurgical slag, and wherein, the ratio of quality and the number of copies of flyash and metallurgical slag is: 1-2:0.5-1; And/or, described mine tailing is the mixture of high alumino-silicate type mine tailing, magnesium, iron and silicon hydrochlorate type mine tailing and alkaline silicate salt form mine tailing, wherein, the ratio of quality and the number of copies 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.
Wherein preferred further, the main component of described powder is the rubble body of 10-20 part, the dregs of 20-40 part and the queen closer of 20-30 part.
Wherein preferred, described activator is obtained by following composition: sodium hydroxide 2-10 part, Starso 1-8 part, calcium sulfate 10-30 part, amides mixture 0.1-2 part, ether of cellulose 0.1-0.3 part, vinylformic acid 0.5-1 part, cyclic hydrocarbon mixture 1-2 part, macromolecule dispersing agent 0.1-1 part and water 15-30 part.
Further, described activator is obtained by following composition: 5 parts, sodium hydroxide, Starso 7 parts, 20 parts, calcium sulfate, 0.5 part, amides mixture, ether of cellulose 0.2 part, 0.7 part, vinylformic acid, 1 part, cyclic hydrocarbon mixture, macromolecule dispersing agent 0.4 part and 20 parts, water.
Further, described amides mixture is made up of N-ethyl acetamide, methane amide and 2,4-dihydroxy benzoyl amine, and its ratio of quality and the number of copies is: 0.5-1:0.1-0.5:0.7-1; And/or, described ether of cellulose is become to be grouped into carboxymethyl cellulose four kinds by Natvosol, carboxymethyl hydroxyethyl cellulose, ethyl cellulose, wherein, the mass fraction of each composition is: Natvosol 1-2 part, carboxymethyl hydroxyethyl cellulose 0.5-1 part, ethyl cellulose 0.1-0.5 part and carboxymethyl cellulose 1-2 part.
Further, cyclic hydrocarbon mixture is made up of tetrahydrobenzene and hexanaphthene, and its ratio of quality and the number of copies is: 1-2:0.5-1; With or, described macromolecule dispersing agent be fatty alcohol-polyoxyethylene ether and ammonium polyacrylate composition, its ratio of quality and the number of copies is: 1-2:0.5-1.
Wherein, the preparation method of activator comprises the following steps:
The first step, various raw materials by dewatering, beyond sodium hydroxide, Starso, calcium sulfate add in reactor respectively according to each ratio of quality and the number of copies, setting pressure is 4MPa, temperature is react at 50 DEG C, opens whipping appts simultaneously, stirs, continue 2 hours, obtained mixture;
Second step, sodium hydroxide, Starso, calcium sulfate to be added to the water according to ratio of quality and the number of copies, and add the mixture that the first step obtains, carry out mixing and stirring, continue 30 minutes, then at the temperature of 400 DEG C, heating 30 minutes-1 hour is carried out, then cool 2 hours, namely obtain the activator of powder granule.
In order to achieve the above object, present invention also offers the preparation method of described high performance concrete composite blend, wherein,
The first step, by other raw materials beyond activator respectively via band frequency conversion rotary feeder respectively feeding grind in ultra-fine vertical mill, the particle diameter of each raw material is made to reach 8-12um, and the raw material that particle diameter not to be reached requirement by screening reenters in ultra-fine vertical mill and grinds, until particle diameter reaches 8-12um;
Second step, to be delivered in mixing machine by each raw material after the first step process and carry out abundant mechanically mixing, the time of being uniformly mixed is 10 minutes, then adds activator, and mix and blend 10 minutes, namely obtains composite blend.
The invention has the beneficial effects as follows: 1. starting material (flyash, waste residue, mine tailing etc.) wide material sources, be easy to obtain, with low cost; Calculate according to 1,000,000,000 side's concrete every year, all kinds of solid waste of 200,000,000 tons can be consumed every year; 2. vast scale 50% replaces the cement consumption in concrete, has surprising economic benefit and environmental benefit; Cement 11.3 hundred million tons can be saved every year, reduce Carbon emission about 6.6 hundred million tons; The factors such as 3. add the concrete of composite blend, serviceability significantly improves, and due to the microballon effect in adulterant, space water demand amount is little, the filling effect of inner more reasonably grating and fine powder material, make concrete serviceability significantly improve; 4. add the concrete of composite blend, the performance of its intensity significantly improves, late strength of concrete advantageously: early strength improves a lot compared with benchmark sample, and the intensity in later stage (after 28 days) has and continues significant lifting.
Embodiment
Below adopt embodiment to describe embodiments of the present invention in detail, to the present invention, how utilisation technology means solve technical problem whereby, and the implementation procedure reaching technique effect can fully understand and implement according to this.
Embodiment 1 activator
The activator that the present invention uses, its preparation method comprises the following steps:
The first step, 5kg amides mixture, 2kg ether of cellulose, 7kg vinylformic acid, 10kg cyclic hydrocarbon mixture and 4kg macromolecule dispersing agent to be added in reactor respectively, setting pressure is 4MPa, temperature is react at 50 DEG C, open whipping appts simultaneously, stir, continue 2 hours, obtained mixture;
Second step, 50kg sodium hydroxide, 70kg Starso and 200kg calcium sulfate are added in 200kg water, and add the mixture that the first step obtains, carry out mixing and stirring, continue 30 minutes, then at the temperature of 400 DEG C, carry out heating 30 minutes, then cool 2 hours, namely obtain the activator of powder granule.
Wherein, amides mixture is made up of 1.875kgN-ethyl acetamide, 0.625kg methane amide and 2.5kg2,4-dihydroxy benzoyl amine.
Wherein, ether of cellulose is become to be grouped into 0.73kg carboxymethyl cellulose four kinds by 0.73kg Natvosol, 0.39kg carboxymethyl hydroxyethyl cellulose, 0.15kg ethyl cellulose.
Wherein, cyclic hydrocarbon mixture is made up of 6.5kg tetrahydrobenzene and 3.5kg hexanaphthene.
Wherein, macromolecule dispersing agent is 2.6kg fatty alcohol-polyoxyethylene ether and 1.4kg ammonium polyacrylate composition.
Embodiment 2 composite blend I
The invention provides a kind of high-performance composite concrete adulterant, obtained 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 slag, and mine tailing is the mixture of 4kg height alumino-silicate type mine tailing, 4kg magnesium, iron and silicon hydrochlorate type mine tailing and 2kg alkaline silicate salt form mine tailing.
Wherein, the main component of powder is 1kg rubble body, 2kg dregs and 2kg queen closer.
Wherein, the activator that obtains for embodiment 1 of the activator of use.
Preparation process is:
The first step, by other raw materials beyond activator respectively via band frequency conversion rotary feeder respectively feeding grind in ultra-fine vertical mill, the particle diameter of each raw material is made to reach 8um, and the raw material that particle diameter not to be reached requirement by screening reenters in ultra-fine vertical mill and grinds, until particle diameter reaches 8um;
Second step, to be delivered in mixing machine by each raw material after the first step process and carry out abundant mechanically mixing, the time of being uniformly mixed is 10 minutes, then adds activator, and mix and blend 10 minutes, namely obtains composite blend.
Embodiment 3 composite blend II
The invention provides a kind of high-performance composite concrete adulterant, obtained by following raw material: obtained by the raw material of following mass fraction: 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 slag; Mine tailing is the mixture of 6.4kg height alumino-silicate type mine tailing, 6.4kg magnesium, iron and silicon hydrochlorate type mine tailing and 3.2kg alkaline silicate salt form mine tailing.
Wherein, the main component of powder is 2.67kg rubble body, 5.33kg dregs and 4kg queen closer.
Wherein, the activator that obtains for embodiment 1 of the activator of use.
Preparation process is:
The first step, by other raw materials beyond activator respectively via band frequency conversion rotary feeder respectively feeding grind in ultra-fine vertical mill, the particle diameter of each raw material is made to reach 12um, and the raw material that particle diameter not to be reached requirement by screening reenters in ultra-fine vertical mill and grinds, until particle diameter reaches 12um;
Second step, to be delivered in mixing machine by each raw material after the first step process and carry out abundant mechanically mixing, the time of being uniformly mixed is 10 minutes, then adds activator, and mix and blend 10 minutes, namely obtains composite blend.
Embodiment 4 composite blend III
The invention provides a kind of high-performance composite concrete adulterant, obtained 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 slag; Mine tailing is the mixture of 4.74kg height alumino-silicate type mine tailing, 4.74kg magnesium, iron and silicon hydrochlorate type mine tailing and 2.52kg alkaline silicate salt form mine tailing.
Wherein, the main component of powder is 2.14kg rubble body, 4.29kg dregs and 3.57kg queen closer.
Wherein, the activator that obtains for embodiment 1 of the activator of use.
Preparation process is:
The first step, by other raw materials beyond activator respectively via band frequency conversion rotary feeder respectively feeding grind in ultra-fine vertical mill, the particle diameter of each raw material is made to reach 10um, and the raw material that particle diameter not to be reached requirement by screening reenters in ultra-fine vertical mill and grinds, until particle diameter reaches 10um;
Second step, to be delivered in mixing machine by each raw material after the first step process and carry out abundant mechanically mixing, the time of being uniformly mixed is 10 minutes, then adds activator, and mix and blend 10 minutes, namely obtains composite blend.
Project simultaneous test
Data analysis is carried out for Linyi Tianyuan concrete works company limited concrete project.
Control group is the C30 concrete not using adulterant to mix to obtain; First group of C30 concrete using composite blend (I) to mix.Second group of C30 concrete using composite blend (II) to mix.The 3rd group of C30 concrete using composite blend (III) to mix.
Table 1 is raw material Basic Information Table
(1) composite blend for first group, second group and the 3rd group carries out activity contrast.Obtain data results below: table 2 is active comparing result
Can be learnt that by table 2 activity of the composite blend that embodiment 1-3 obtains all had good activity at the 1st, 3,7,14 day, and last till that 28 days activity increase further to some extent, maintain higher activity.
(2) 3 test group and 1 control group is selected to carry out 1M
3the improvement contrast of concrete materials and performance thereof.
Table 3 is the Cost comparisons of 4 groups
Can be learnt by table 3, the consumption of 4 groups of every side's concrete materials and contrast, can learn, compared with comparative group, the cement consumption of 3 embodiment groups greatly reduces to 50%, and the cost of three embodiment groups decreases 25.4 yuan, 25.6 yuan and 25.5 yuan respectively relative to the cost of comparative group.
(3) intensity detection of slump and 1 day, 3 days, 7 days, 14 days and 28 days is carried out respectively for 4 groups.
Result is as table 4.
Can be learnt by table 4,3 embodiment groups add the composite blend of activator of the present invention for concrete production, concrete 28 days ultimate compression strength can be made to improve 8-10MPa, substantially increase concrete serviceability and mechanical property.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a high performance concrete composite blend, is characterized in that, is obtained by the raw material of following mass fraction: waste residue 30-60 part, mine tailing 10-16 part, desulfurated plaster 1-2 part, powder 5-12 part and activator 1-5 part.
2. high performance concrete composite blend according to claim 1, is characterized in that, is obtained by the raw material of following mass fraction: 55 parts, waste residue, mine tailing 12 parts, desulfurated plaster 1 part, powder 10 parts and 3.24 parts, activator.
3. high performance concrete composite blend according to claim 1 and 2, is characterized in that, described waste residue is made up of flyash and metallurgical slag, and wherein, the ratio of quality and the number of copies of flyash and metallurgical slag is: 1-2:0.5-1; And/or, described mine tailing is the mixture of high alumino-silicate type mine tailing, magnesium, iron and silicon hydrochlorate type mine tailing and alkaline silicate salt form mine tailing, wherein, the ratio of quality and the number of copies 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.
4. the high performance concrete composite blend according to any one of claims 1 to 3, is characterized in that, the main component of described powder is the rubble body of 10-20 part, the dregs of 20-40 part and the queen closer of 20-30 part.
5. the high performance concrete composite blend according to any one of Claims 1-4, it is characterized in that, described activator is obtained by following composition: sodium hydroxide 2-10 part, Starso 1-8 part, calcium sulfate 10-30 part, amides mixture 0.1-2 part, ether of cellulose 0.1-0.3 part, vinylformic acid 0.5-1 part, cyclic hydrocarbon mixture 1-2 part, macromolecule dispersing agent 0.1-1 part and water 15-30 part.
6. the high performance concrete composite blend according to any one of claim 1 to 5, it is characterized in that, described activator is obtained by following composition: 5 parts, sodium hydroxide, Starso 7 parts, 20 parts, calcium sulfate, 0.5 part, amides mixture, ether of cellulose 0.2 part, 0.7 part, vinylformic acid, 1 part, cyclic hydrocarbon mixture, macromolecule dispersing agent 0.4 part and 20 parts, water.
7. the high performance concrete composite blend according to any one of claim 1 to 5, it is characterized in that, described amides mixture is made up of N-ethyl acetamide, methane amide and 2,4-dihydroxy benzoyl amine, and its ratio of quality and the number of copies is: 0.5-1:0.1-0.5:0.7-1; And/or, described ether of cellulose is become to be grouped into carboxymethyl cellulose four kinds by Natvosol, carboxymethyl hydroxyethyl cellulose, ethyl cellulose, wherein, the mass fraction of each composition is: Natvosol 1-2 part, carboxymethyl hydroxyethyl cellulose 0.5-1 part, ethyl cellulose 0.1-0.5 part and carboxymethyl cellulose 1-2 part.
8. the high performance concrete composite blend according to any one of claim 1 to 5, it is characterized in that, cyclic hydrocarbon mixture is made up of tetrahydrobenzene and hexanaphthene, its ratio of quality and the number of copies is: 1-2:0.5-1; And/or described macromolecule dispersing agent is fatty alcohol-polyoxyethylene ether and ammonium polyacrylate composition, and its ratio of quality and the number of copies is: 1-2:0.5-1.
9. the high performance concrete composite blend according to any one of claim 1 to 5, is characterized in that, the preparation method of activator comprises the following steps:
The first step, various raw materials by dewatering, beyond sodium hydroxide, Starso, calcium sulfate add in reactor respectively according to each ratio of quality and the number of copies, setting pressure is 4MPa, temperature is react at 50 DEG C, opens whipping appts simultaneously, stirs, continue 2 hours, obtained mixture;
Second step, sodium hydroxide, Starso, calcium sulfate to be added to the water according to ratio of quality and the number of copies, and add the mixture that the first step obtains, carry out mixing and stirring, continue 30 minutes, then at the temperature of 400 DEG C, heating 30 minutes-1 hour is carried out, then cool 2 hours, namely obtain the activator of powder granule.
10. the high performance concrete composite blend according to any one of claim 1 to 9, it is characterized in that, preparation method comprises the following steps:
The first step, by other raw materials beyond activator respectively via band frequency conversion rotary feeder respectively feeding grind in ultra-fine vertical mill, the particle diameter of each raw material is made to reach 8-12um, and the raw material that particle diameter not to be reached requirement by screening reenters in ultra-fine vertical mill and grinds, until particle diameter reaches 8-12um;
Second step, to be delivered in mixing machine by each raw material after the first step process and carry out abundant mechanically mixing, the time of being uniformly mixed is 10 minutes, then adds activator, and mix and blend 10 minutes, namely obtains composite blend.
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| CN113955970A (en) * | 2021-12-04 | 2022-01-21 | 东莞市金胜混凝土有限公司 | Concrete admixture and preparation method thereof |
| CN115677265B (en) * | 2023-01-05 | 2023-03-10 | 天津冶建特种材料有限公司 | Iron tailing based self-repairing concrete admixture and preparation method thereof |
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Effective date of registration: 20230116 Address after: Room 4-501-6, Yinhe Building, No. 2008, Xinluo Street, High-tech Zone, Jinan City, Shandong Province, 250098 Patentee after: Shandong middle powder building materials technology Co.,Ltd. Address before: Opposite Chongqi Group, Dangjiazhuang Town, Shizhong District, Jinan City, Shandong Province, 250000 Patentee before: SHANDONG SINOPOWD BUILDING MATERIAL Corp. |