CN108191290A - A kind of compound exciting agent and preparation method thereof - Google Patents
A kind of compound exciting agent and preparation method thereof Download PDFInfo
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- CN108191290A CN108191290A CN201810041722.XA CN201810041722A CN108191290A CN 108191290 A CN108191290 A CN 108191290A CN 201810041722 A CN201810041722 A CN 201810041722A CN 108191290 A CN108191290 A CN 108191290A
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- concrete
- mineral admixture
- exciting agent
- admixture
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0042—Powdery mixtures
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of external additive of concrete, more particularly to mainly for applied in the concrete mixing objects system that mineral admixture is added in concrete field, and there is the external additive of excitation to mineral admixture.The present invention devises compound exciting agent, it is to be added to water-reducing agent again on the basis of exciting agent, antifoaming agent, the auxiliary addition agents such as thinner participate in preparing, its exciting agent prepared has good stimulation effect to mineral admixture and cement, and the dosage of mineral admixture can be increased during use, can also enhance concrete properties while production cost is reduced.The present invention applies in concrete system mainly with flyash and two class substance of miberal powder as admixture, and all kinds of excitability chemical substances are added to so that compound exciting agent is configured, substance with excitation is overlapped mutually use, corresponding to act on mutually complementation to reach maximum excitation.
Description
Technical field
The present invention relates to a kind of external additive of concrete, more particularly to mainly for applied to being added in concrete field
In the concrete mixing objects system of mineral admixture, and there is the external additive of excitation to mineral admixture.
Background technology
In the process of construction of current mankind's foundation engineering, the use of material is more and more diversified in building, but
Numerous is construction material in use, the use of concrete material is still in occupation of very big share, this is primarily due in crowd
In more construction materials, concrete is cheap, properties of product are easy to a kind of construction material of regulation and control, therefore are built in current
It builds in engineering, a kind of construction material that concrete construction is still widely used.But with science and technology and economic level
Continuous development, how by concrete building material accomplish high-efficiency environment friendly be in current architectural engineering for concrete will
It asks.And based on this requirement, mineral admixture has entered concrete field.
And widely applied to the mineral admixture in concrete field mainly by flyash, volcanic ash, silicon ash, ore deposit
Several classes such as powder, the main source of mineral admixture are divided into artificial preparation, industrial waste, naturally occur several major class.And in concrete
Mineral mineral admixture is added in system can not only improve the practical physical property of concrete, and be used in concrete
Mineral admixture is capable of the consumption of the raising industrial waste of amplitude peak, prepares the sustainable concrete of green, realizes mineral
The reasonable utilization of admixture.
But when mineral admixture is used in concrete works, although having a large amount of active matter in mineral admixture
Matter, but it is more difficult during use play a role, therefore, when using mineral admixture, it is necessary to mix it is other have it is sharp
Active component in the substance activating mineral admixture of breaking-out.
Chinese invention patent publication number CN1386715A discloses a kind of production method of cement strength excitant, at this specially
Organosilicon reinforcing agent and the cement adjuvant with early strong effect has been used to be prepared plus lanthanum cerium mischmetal element in profit, has had this specially
Cement mortar prepared by profit has good stimulation effect, and the intensity of cement effectively can be excited, but prepared
During employ rare earth element, the cost of rare earth element is higher, and cost is higher during use, in addition to this,
The standby exciting agent of the patent system is excited just for the intensity of cement, and this has list for the use of concrete soil material
One performance.
And from the point of view of the comprehensive exciting agent announced on the market for concrete at present, the exciting agent of big logarithm is both for water
The excitation of the materials such as mud, and for mineral admixture exciting agent it is more rare, but in recent years since mixed and stirred for concrete
After mineral admixture is added in journey, how to add suitable auxiliary agent needs deeply to grind the activity of admixture to be excited to be one
Study carefully what is used.
Invention content
The defects of purpose of the present invention is intended to overcome the prior art provides a kind of ore deposit for being directed to addition in concrete
Polymer blends material can effectively excite the compound exciting agent of mineral admixture activity.
Compound exciting agent of the present invention, mainly by mineral admixture, sodium sulphate, dihydrate gypsum, calcium hydroxide, naphthalene
Based water reducer, triisopropanolamine, polyoxyethylene polyoxypropylene pentaerythrite ether, microballon, sodium nitrite form, between each component
Weight part ratio is：180-240 parts of mineral admixture, 5-15 parts of dihydrate gypsum, 2-4 parts of sodium sulphate, 2-4 parts of calcium hydroxide, naphthalene system
0.3-0.7 parts of water-reducing agent, 0.1-0.2 parts of triisopropanolamine, 0.001-0.002 parts of polyoxyethylene polyoxypropylene pentaerythrite ether,
0.01-0.02 parts of microballon, 0.1-0.2 parts of sodium nitrite.
Weight part ratio between each component is：200 parts of mineral admixture, 10 parts of dihydrate gypsum, 3 parts of sodium sulphate, hydroxide
3 parts of calcium, 0.5 part of naphthalene water reducer, 0.1 part of triisopropanolamine, 0.001 part of polyoxyethylene polyoxypropylene pentaerythrite ether, microballon
0.01 part, 0.1 part of sodium nitrite.
The mineral admixture is obtained by mixing for flyash and miberal powder, and the weight ratio of flyash and miberal powder is：4-5:5-
6。
Compound exciting agent of the present invention, its preparation process are：
A, consersion unit normal operation is first checked before being prepared；
B, miberal powder and flyash are carried out just mixed；Miberal powder admixture mixed proportion is flyash：Miberal powder=4-5:5-6, mixing is equal
The mineral admixture of gained, which is placed in material storage kettle, after even stores for future use；
C, mineral admixture is added in by weight in dry powder stirred tank, sodium sulphate, dihydrate gypsum, calcium hydroxide, naphthalene system subtract
Aqua, triisopropanolamine, polyoxyethylene polyoxypropylene pentaerythrite ether, microballon, sodium nitrite；
D, it is the material stirring in dry powder stirred tank is uniform, and the mixture being stirred is moved in material storage kettle and is stored for future use.
Compound exciting agent of the present invention, in use, control water-cement ratio are 0.38, and volume is weight concrete
0.8%。
The present invention applies to mainly with flyash and two class substance of miberal powder as admixture in concrete system, and adds
Add all kinds of excitability chemical substances that compound exciting agent is configured, the substance with excitation is overlapped mutually use,
It is corresponding to act on mutually complementation to reach maximum excitation.Its mechanism is：
1st, flyash：Current most of flyash on the market is all the waste material that the power plant emission of coal-powder boiler power generation goes out, therefore,
Flyash on the market is idle mostly at present, and how flyash is recycled and can not changed ensureing concrete performance
The dosage of cement is reduced on the basis of change and also is able to recycle flyash, this is conducive to the reasonable employment of resource
And mitigate the pressure of environment.
And flyash is added in concrete, flyash is the fire with lateral reactivity as a kind of acidic oxide
Mountain grey matter powder, in the environment of alkalinity, the activity of the sial glass in flyash is low, the three dimensions aggregation for composition of saltouing
The depolymerization ability of network structure is low, and the hardness of its glass microballoon formed is higher, is not easy to be broken in the system of concrete
It is bad.In addition to this, the specific surface area of flyash is small, the hair in concrete China addition flyash can effectively reduce concrete
The number of fine holes is so as to effectively reducing the drying shrinkage phenomenon of concrete.
2nd, miberal powder：The specific surface area of miberal powder is bigger than flyash, and miberal powder is added in concrete can fully play miberal powder
Activity.Component in miberal powder also containing crystalline states such as monocalcium silicate, dicalcium silicates, therefore miberal powder has itself certain hydraulic
Property, add the bleeding that concrete can be effectively reduced in concrete.
3rd, the design of mineral admixture：Certain flyash is added in the system of concrete and miberal powder can be to system
Performance improve to some extent, and pass through practical practice and find in system the energy by the way of flyash and the compound addition of miberal powder
Enough play a role the effect being overlapped mutually.The specific performance characteristic of its compound mineral admixture becomes present：First, new
Mineral admixture is mixed in mixed concrete, can be good at being dispersed in cement granules, to the coacervation of cement slurry
Good depolymerization effect is generated so as to the viscosity for increasing the mobility of cement and reducing system；Second, the aquation in reduction system
Temperature adds in mineral admixture in concrete batching system, can effectively reduce the dosage of cement, so as to avoid because of cement water
Change and generate inside and outside temperature difference formed temperature stress and make concrete cracking；Third, the use of different mineral admixtures
It can play the role of good Overlay, the items that can effectively improve concrete are overlapped mutually between two kinds of mineral
Can, reduce the durability for shrinking and improving concrete.
4th, dihydrate gypsum：The addition of dihydrate gypsum can effectively excite the silica of the activity in mineral admixture, oxygen
Change the components such as aluminium, and also to provide the calcium ion generated needed for hard gelling product, the gel-forming generated in system
Good network structure obtains the higher hydrated product of hardness.Therefore the addition of dihydrate gypsum also has certain enhancing effect.
5th, sodium sulphate：It can break the glass in mineral admixture containing alkalinous metal sodium, alkaline substance in sodium sulphate
Body structure and achieve the effect that intensify, in addition to this, also containing certain non-bridging oxygen key in slag micropowder, and alkali ion plus
Enter to be easy to break these ions, therefore sodium sulphate intensifies effect for slag with certain.And sodium sulphate also has certain
Enhancing effect can effectively enhance the early strength of concrete.
6th, calcium hydroxide：Calcium hydroxide is more easy to enter the hole of reticular structure in mineral admixture than water, can be with
Anion in mineral admixture has an effect and promotes the dissociation of structure and reach activation, and in addition calcium hydroxide is also body
Calcium ion is introduced in system, the increase of calcium ion concentration promotes the aquation of the active component in mineral admixture, generates phase
The hydrated product answered and excite the active constituent in admixture.
7th, naphthalene water reducer：Since mineral admixture is easier to be combined with water compared with cement, in the process used
Middle water requirement is larger, and the ingredient that corresponding water-reducing agent is added in system is capable of the water consumption of effective control system, and
Increase the fluidity of concrete system, reduce viscosity.
8th, triisopropanolamine：Triisopropanolamine has the structure of space multistory, can effectively reduce energy consumption, and have
Very strong peptizaiton can effectively increase the mobility of system so as to reduce viscosity during use, in addition to this,
The addition of triisopropanolamine also is able to the intensity of enhancing cement.
9th, polyoxyethylene polyoxypropylene pentaerythrite ether：Polyoxyethylene polyoxypropylene pentaerythrite ether is good defoaming
Agent, since the mechanism that physics mixes and stirs can introduce certain bubble in system during the mixing and stirring of concrete, and this
The formation of class bubble is unfavorable for the holding of concrete strength, therefore, polyoxyethylene polyoxypropylene pentaerythrite is used in system
Ether can effectively inhibit the bubble not generated as antifoaming agent and break up the bubble generated, reduce the intensity of concrete
Loss.
10th, microballon：Microballon is the glutinous effect of drop in this exciting agent, is mixed due to introducing a large amount of miberal powder substance in system
Close material, in and the incorporation of foreign peoples's substance can increase the viscosity in concrete system, and microballon is all just spherical structure, pole
Thin grain fraction addition has good " ball effect " in concrete, this plays good lubricating action in concrete,
The viscosity of system can be effectively reduced, and microballon is used in conjunction with each other effectively to play with water-reducing agent and is overlapped mutually
Effect, with water-reducing agent with the use of can further reduce system viscosity and enhance the compactness between cement granules.
11st, sodium nitrite：Sodium nitrite is good antirust, anticorrosive agent, and adding in sodium nitrite in exciting agent can be effective
Prevention concrete works be corroded, this can effectively extend the durability of concrete.
The present invention devises compound exciting agent, is to be added to water-reducing agent again on the basis of exciting agent, antifoaming agent,
The auxiliary addition agents such as thinner participate in preparing, and the exciting agent prepared has mineral admixture and cement good excitation effect
Fruit, and the dosage of mineral admixture can be increased during use, it can also enhance while production cost is reduced mixed
Solidifying soil nature matter.
Compound exciting agent of the present invention is carried out with common concrete batching system in performance during use
Comparison, specific performance characteristic is as shown in the table：
Compare from specific data and can either effectively be saved in concrete as can be seen that there is exciting agent prepared by the present invention to add
The cost that concrete uses is saved, and does not influence every object of concrete after mineral admixture and exciting agent is added to
Rationality energy.
Apply to mainly with flyash and two class substance of miberal powder as admixture in concrete system, and be added to each
For class excitability chemical substance compound exciting agent is configured, the substance with excitation is overlapped mutually use, corresponding
Mutually complementation is acted on to reach maximum excitation.In addition to this, it also added in the system of this exciting agent and disappear accordingly
Infusion, surface reinforcing agent is with every performance of optimised coagulation soil.
Specific embodiment
With reference to embodiment, the present invention is described further, but not limited to the examples.
Embodiment 1
Compound exciting agent of the present invention is mainly subtracted by mineral admixture, sodium sulphate, dihydrate gypsum, calcium hydroxide, naphthalene system
Aqua, triisopropanolamine, polyoxyethylene polyoxypropylene pentaerythrite ether, microballon, sodium nitrite form, the weight between each component
Part than for 200 parts of mineral admixture, 10 parts of dihydrate gypsum, 3 parts of sodium sulphate, 3 parts of calcium hydroxide, 0.5 part of naphthalene water reducer, three different
0.1 part of Propanolamine, 0.001 part of polyoxyethylene polyoxypropylene pentaerythrite ether, 0.01 part of microballon, 0.1 part of sodium nitrite.
The mineral admixture is obtained by mixing for flyash and miberal powder, and the weight ratio of flyash and miberal powder is：4:6.
Embodiment 2
Compound exciting agent of the present invention is mainly subtracted by mineral admixture, sodium sulphate, dihydrate gypsum, calcium hydroxide, naphthalene system
Aqua, triisopropanolamine, polyoxyethylene polyoxypropylene pentaerythrite ether, microballon, sodium nitrite form, the weight between each component
Part ratio is：180 parts of mineral admixture, it is 5 parts of dihydrate gypsum, 2 parts of sodium sulphate, 2 parts of calcium hydroxide, 0.3 part of naphthalene water reducer, three different
0.1 part of Propanolamine, 0.001 part of polyoxyethylene polyoxypropylene pentaerythrite ether, 0.01 part of microballon, 0.1 part of sodium nitrite.
The mineral admixture is obtained by mixing for flyash and miberal powder, and the weight ratio of flyash and miberal powder is：4：6.
Embodiment 3
Compound exciting agent of the present invention is mainly subtracted by mineral admixture, sodium sulphate, dihydrate gypsum, calcium hydroxide, naphthalene system
Aqua, triisopropanolamine, polyoxyethylene polyoxypropylene pentaerythrite ether, microballon, sodium nitrite form, the weight between each component
Part ratio is：240 parts of mineral admixture, 15 parts of dihydrate gypsum, 4 parts of sodium sulphate, 4 parts of calcium hydroxide, 0.7 part of naphthalene water reducer, three
0.2 part of isopropanolamine, 0.002 part of polyoxyethylene polyoxypropylene pentaerythrite ether, 0.02 part of microballon, 0.2 part of sodium nitrite.
The mineral admixture is obtained by mixing for flyash and miberal powder, and the weight ratio of flyash and miberal powder is：5:5.
Embodiment 4
Compound exciting agent of the present invention, its preparation process are：
A, first check whether consersion unit being capable of normal operation before formal prepared.
B, miberal powder and flyash are carried out just mixed；Miberal powder admixture mixed proportion is designed as 40% flyash, 60% ore deposit
Powder.Mineral admixture after mixing is placed in material storage kettle and is stored for future use.
C, 200 parts of mineral admixtures, 3 parts of sodium sulphate, 10 parts of dihydrate gypsums, 3 parts of hydroxides are added in dry powder stirred tank
Calcium, 0.5 part of naphthalene water reducer, 0.1 part of triisopropanolamine, 0.001 part of polyoxyethylene polyoxypropylene pentaerythrite ether, 0.01 part it is micro-
Pearl, 0.1 part of sodium nitrite.
D, added reagent is stirred evenly, and product is moved in material storage kettle and is stored for future use.
E, exciting agent prepared by the present invention water-cement ratio during use is 0.38, volume 0.8%.
Claims (5)
1. a kind of compound exciting agent, mainly by mineral admixture, sodium sulphate, dihydrate gypsum, calcium hydroxide, naphthalene water reducer,
Triisopropanolamine, polyoxyethylene polyoxypropylene pentaerythrite ether, microballon, sodium nitrite composition, which is characterized in that between each component
Weight part ratio be：180-240 parts of mineral admixture, 5-15 parts of dihydrate gypsum, 2-4 parts of sodium sulphate, 2-4 parts of calcium hydroxide, naphthalene
0.3-0.7 parts of based water reducer, 0.1-0.2 parts of triisopropanolamine, polyoxyethylene polyoxypropylene pentaerythrite ether 0.001-0.002
Part, 0.01-0.02 parts of microballon, 0.1-0.2 parts of sodium nitrite.
2. compound exciting agent according to claim 1, which is characterized in that the weight part ratio between each component is：Mineral
200 parts of admixture, 10 parts of dihydrate gypsum, 3 parts of sodium sulphate, 3 parts of calcium hydroxide, 0.5 part of naphthalene water reducer, triisopropanolamine 0.1
Part, 0.001 part of polyoxyethylene polyoxypropylene pentaerythrite ether, 0.01 part of microballon, 0.1 part of sodium nitrite.
3. compound exciting agent according to claim 1, which is characterized in that the mineral admixture is flyash and ore deposit
Powder is obtained by mixing, and the weight ratio of flyash and miberal powder is：4-5:5-6.
4. compound exciting agent according to claim 1, which is characterized in that its preparation process is：
A, consersion unit normal operation is first checked before being prepared；
B, miberal powder and flyash are carried out just mixed；Miberal powder admixture mixed proportion is flyash：Miberal powder=4-5:5-6, mixing is equal
The mineral admixture of gained, which is placed in material storage kettle, after even stores for future use；
C, mineral admixture is added in by weight in dry powder stirred tank, sodium sulphate, dihydrate gypsum, calcium hydroxide, naphthalene system subtract
Aqua, triisopropanolamine, polyoxyethylene polyoxypropylene pentaerythrite ether, microballon, sodium nitrite；
D, it is the material stirring in dry powder stirred tank is uniform, and the mixture being stirred is moved in material storage kettle and is stored for future use.
5. compound exciting agent according to claim 1, which is characterized in that water-cement ratio is its application method in order to control
0.38, volume is the 0.8% of weight concrete.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810041722.XA CN108191290A (en) | 2018-01-16 | 2018-01-16 | A kind of compound exciting agent and preparation method thereof |
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| CN201810041722.XA CN108191290A (en) | 2018-01-16 | 2018-01-16 | A kind of compound exciting agent and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113735481A (en) * | 2021-08-27 | 2021-12-03 | 河南理工大学 | Composite early strength mineral admixture and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985391A (en) * | 2010-09-10 | 2011-03-16 | 重庆达华砼外加剂科技发展有限公司 | Additive for activating flyash |
| CN106830988A (en) * | 2017-04-11 | 2017-06-13 | 江苏科技大学 | A kind of light-weight aggregate high performance concrete and preparation method thereof |
| CN107555828A (en) * | 2017-09-27 | 2018-01-09 | 中建西部建设新疆有限公司 | A kind of strong concrete thinner |
-
2018
- 2018-01-16 CN CN201810041722.XA patent/CN108191290A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985391A (en) * | 2010-09-10 | 2011-03-16 | 重庆达华砼外加剂科技发展有限公司 | Additive for activating flyash |
| CN106830988A (en) * | 2017-04-11 | 2017-06-13 | 江苏科技大学 | A kind of light-weight aggregate high performance concrete and preparation method thereof |
| CN107555828A (en) * | 2017-09-27 | 2018-01-09 | 中建西部建设新疆有限公司 | A kind of strong concrete thinner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113735481A (en) * | 2021-08-27 | 2021-12-03 | 河南理工大学 | Composite early strength mineral admixture and preparation method and application thereof |
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Application publication date: 20180622 |