CN108249810A - A kind of preparation method of strong concrete accelerator - Google Patents
A kind of preparation method of strong concrete accelerator Download PDFInfo
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- CN108249810A CN108249810A CN201810061428.5A CN201810061428A CN108249810A CN 108249810 A CN108249810 A CN 108249810A CN 201810061428 A CN201810061428 A CN 201810061428A CN 108249810 A CN108249810 A CN 108249810A
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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
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
- C04B2103/12—Set accelerators
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A kind of preparation method of strong concrete accelerator is related to the preparation method of concrete admixture, more particularly to a kind of preparation method of the concrete accelerator of high intensity, base-material of the invention using aluminum sulfate as alkali-free quick-coagulant, and the auxiliary agents such as sodium fluoride, sodium metasilicate, dimethylbenzene, naphthalenesulfonate formaldehyde condensation compound, triethanolamine, calcium formate, hydroxyethyl carboxymethyl cellulose are added on basis to play enhancing concrete strength herein, accelerate used in reaction rate etc..And when reaction carries out to a certain extent, it is eventually adding phosphoric acid and methacrylic acid, the addition of acid solution plays the role of certain booster action and can effectively adjust the pH value of reaction system influencing without the steel material in corrosion concrete system the later strength of concrete so as to which final product be enable effectively to play rapid hardening.Preparation method of the present invention is simple and effect is good.
Description
Technical field
The present invention relates to the preparation method of concrete admixture, more particularly to a kind of concrete accelerator of high intensity
Preparation method.
Background technology
The utilization of accelerator can effectively reduce the setting time of cement so as to reduce the duration, speed up the work.And
Since the 1930s for the first time invention accelerator, the development and utilization of accelerator are very fast.But the hair of China's accelerator
Exhibition is but relatively slow, and the accelerator in China is mainly with " Red Star-Ι types " and " 728 type " for representative, but with regard to current China on the market
Accelerator from the point of view of, mainly to have based on alkali accelerator.
Chinese invention patent CN1407954A discloses a kind of preparation of accelerator, by the way that aluminum sulfate is soluble in water
It is added in amine-containing water with generating aluminium hydroxide, and accelerator is prepared as stabilizer using carboxylic acid, phosphoric acid and salt.This accelerator
Although the rapid hardening time is short, concrete can be made to have good intensity, and the variation of temperature can be resisted, in practical production
Centre is generated in preparation process and generates aluminium hydroxide, the pH value of system can be caused to be difficult in the generation of system neutral and alkali substance
Control, so as to ensure the final effect of product.
China Building Material Scientific Research General Institute patent CN201110112424 discloses one kind using aluminum sulfate as base-material, has
Machine amine is alkali-free liquid accelerator prepared by viscosity modifier, this accelerator can effectively reduce the time of concrete coagulation
And it also is able to improve injection layer thickness, but is found by practical detection using the concrete of this accelerator after using
Phase can cause loss of strength serious.
Invention content
The defects of purpose of the present invention is intended to overcome the prior art provides the height that a kind of preparation method is simple and effect is good
The preparation method of strength concrete accelerator.
The preparation method of strong concrete accelerator of the present invention, with 2-4 parts of naphthalenesulfonate formaldehyde condensation compound and
4-6 parts of water is component A；4-6 parts of sodium metasilicate, 0.4-0.6 parts of triethanolamine, 0.2-0.4 parts of calcium formate, hydroxyethyl-carboxymethyl fiber
0.2-0.4 parts plain, 4-6 parts of water is B component；0.4-0.6 parts of phosphoric acid, 0.4-0.6 parts of methacrylic acid are component C, with 50-60 parts
Aluminum sulfate is base-material, 15-25 parts of water, 7-13 parts of sodium fluoride and 0.4-0.6 parts of dimethylbenzene, preparation method are：
A, by the aluminum sulfate of above-mentioned parts by weight, water, sodium fluoride, dimethylbenzene are added in reaction kettle, and temperature is risen to 85 DEG C.
B, during heating is reacted, by above-mentioned parts by weight naphthalenesulfonate formaldehyde condensation compound and water, stirring is equal
It is even spare for solution A；Sodium metasilicate, triethanolamine, calcium formate, hydroxyethyl carboxymethyl cellulose, water is configured, it is molten to be stirred for B
Liquid；Configuration phosphoric acid, methacrylic acid are stirred for C solution.
C, when temperature rises to 85 DEG C, the step b solution As prepared are added dropwise in reaction kettle in 30 minutes, are reacted 15 minutes.
D, after step c reacts 15 minutes, B solution is added dropwise in reaction kettle, and controls time for adding as 25-35 points
Clock after completion of dropwise addition, is put and is reacted 60-120 minutes under 85 DEG C of environment.
E, it treats that reaction carries out 60 minutes and then the C solution prepared was added within 15 minutes, treats that C solution is added dropwise
After completely, reacted 60 minutes at 85 DEG C.
F, it treats after reaction, reaction product is taken out into backup detection, reaction product is moved into liquid storage kettle after detection is qualified
It is spare.
Base-material of the present invention using aluminum sulfate as alkali-free quick-coagulant, and herein basis on add sodium fluoride, sodium metasilicate,
The auxiliary agents such as dimethylbenzene, naphthalenesulfonate formaldehyde condensation compound, triethanolamine, calcium formate, hydroxyethyl carboxymethyl cellulose are enhanced with playing
Concrete strength is accelerated used in reaction rate etc..And when reaction carries out to a certain extent, it is eventually adding phosphoric acid and methyl-prop
Olefin(e) acid, certain booster action is played in the addition of acid solution, and can effectively to adjust the pH value of reaction system final so as to make
Product can effectively play the role of rapid hardening without the steel material in corrosion concrete system so as to influence concrete after
Phase intensity.
1st, aluminum sulfate is acted on the calcium oxide in cement during reaction and being given birth to as the base-material for preparing alkali-free aluminum sulfate
Into entringite and a series of intermediate product, this kind of intermediate product can intersect generation reticular structure in water-setting and make water
Mud achievees the effect that rapid hardening.And herein basis on add dispersant water, hydrophily viscosity-controlling agent substance sodium fluoride and
Exciting agent dimethylbenzene, a series of addition of this adjuvant can effectively adjust viscosity and dispersion journey of the base-material in system
Degree carries out so as to be that reaction is effective.
2nd, the design of component A：Naphthalene sulphonate formaldehyde condensation is added in after base-material to be reacted and the dissolving of basic auxiliary agent
Object, the surfactant splendid as performance, diffusivity is good, can be uniformly mixed effectively the component of reaction, and this pole
Be conducive to the progress of reaction, in addition naphthalenesulfonate formaldehyde condensation compound can effectively improve the workability of concrete, reduce coagulation
The loss of native later strength.
3rd, the design of B component：A large amount of concrete additives are added in B component, each of which auxiliary agent all plays it solely
Special effectiveness.Sodium metasilicate has good acid resistance, can be acted in strongly acidic solution, and used in the alkali-free quick-coagulant of the present invention
In do not receive shadow by and the cohesive force of sodium metasilicate is strong, can effectively improve intensity and compactness；Its energy of addition triethanolamine
Salt is being generated in acid environment, and wherein have-NH2Group can effectively be adhered to the surface of particle and change
Become surface tension, there is extremely strong affinity；The early stage for solidifying and enhancing cement that calcium formate can effectively accelerate cement is strong
Degree, and can go to ensure that concrete its surface property during demoulding does not receive influence with certain stripping result；Hydroxyl second
Base carboxymethyl fibre cellulose has certain flocculation, can improve the viscosity of accelerator as good viscosity-controlling agent, from
And accelerate the setting rate of concrete, the period of engineering is shortened, infrastructure this morning is made to come into operation.
3rd, the design of component C：Component C design adds in two kinds of acid, and phosphoric acid can effectively control the pH value of reaction, reduces
Alkali content in system, the addition for mitigating the corrosion polyacrylic acid for concrete material handle the PH that can be controlled in system
It is also with certain water sorption except value, the moisture in reduction system, and mitigates the excreting water phenomenon of concrete, effectively
Quickening concrete rapid hardening.
The finished product that the preparation method of strong concrete accelerator of the present invention is prepared after testing, with commercially available speed
Solidifying agent compares, as a result such as following table：
1 each alkali-free quick-coagulant basic performance contrast table of table
2 volume of table is each performance comparison table of 8% alkali-free quick-coagulant
3 volume of table is each performance comparison table of 7% alkali-free quick-coagulant
4 volume of table is each performance comparison table of 6% alkali-free quick-coagulant
It is found according to detection comparing result, can be ensured with the strong concrete accelerator that the formula of the present invention is prepared
Also assure that the property indices of concrete are up to standard on the basis of no alkali content, and the formula of alkali-free can be controlled effectively
Therefore the loss of strength in coagulation later stage processed, has good economic benefit with alkali-free quick-coagulant prepared by this formula.
Specific embodiment
With reference to embodiment, the present invention is described further, but not limited to the examples.
Embodiment 1
The preparation method of strong concrete accelerator of the present invention, with 2-4 parts of naphthalenesulfonate formaldehyde condensation compound and water 4-6
Part is component A；4-6 parts of sodium metasilicate, 0.4-0.6 parts of triethanolamine, 0.2-0.4 parts of calcium formate, hydroxyethyl carboxymethyl cellulose
0.2-0.4 parts, 4-6 parts of water be B component；0.4-0.6 parts of phosphoric acid, 0.4-0.6 parts of methacrylic acid are component C, with 50-60 parts of sulphur
Sour aluminium is base-material, 15-25 parts of water, 7-13 parts of sodium fluoride and 0.4-0.6 parts of dimethylbenzene, preparation method are：
A, by the aluminum sulfate of above-mentioned parts by weight, water, sodium fluoride, dimethylbenzene are added in reaction kettle, and temperature is risen to 85 DEG C.
B, during heating is reacted, by above-mentioned parts by weight naphthalenesulfonate formaldehyde condensation compound and water, stirring is equal
It is even spare for solution A；Sodium metasilicate, triethanolamine, calcium formate, hydroxyethyl carboxymethyl cellulose, water is configured, it is molten to be stirred for B
Liquid；Configuration phosphoric acid, methacrylic acid are stirred for C solution.
C, when temperature rises to 85 DEG C, the step b solution As prepared are added dropwise in reaction kettle in 30 minutes, are reacted 15 minutes.
D, after step c reacts 15 minutes, B solution is added dropwise in reaction kettle, and controls time for adding as 25-35 points
Clock after completion of dropwise addition, is put and is reacted 60-120 minutes under 85 DEG C of environment.
E, it treats that reaction carries out 60 minutes and then the C solution prepared was added within 15 minutes, treats that C solution is added dropwise
After completely, reacted 60 minutes at 85 DEG C.
F, it treats after reaction, reaction product is taken out into backup detection, reaction product is moved into liquid storage kettle after detection is qualified
It is spare.
Claims (1)
1. a kind of preparation method of strong concrete accelerator is with 50-60 parts of aluminum sulfate, 15-25 parts of water, sodium fluoride 7-13
Part, 0.4-0.6 parts of dimethylbenzene, component A, B component and component C are prepared, with 2-4 parts of naphthalenesulfonate formaldehyde condensation compound and water 4-
6 parts are component A；4-6 parts of sodium metasilicate, 0.4-0.6 parts of triethanolamine, 0.2-0.4 parts of calcium formate, hydroxyethyl carboxymethyl cellulose
0.2-0.4 parts, 4-6 parts of water be B component；0.4-0.6 parts of phosphoric acid, 0.4-0.6 parts of methacrylic acid are component C, which is characterized in that
Preparation method is：
A, by the aluminum sulfate of above-mentioned parts by weight, water, sodium fluoride, dimethylbenzene are added in reaction kettle, and temperature is risen to 85；
B, during heating is reacted, by above-mentioned parts by weight naphthalenesulfonate formaldehyde condensation compound and water, it is stirred for A
Solution for standby；Sodium metasilicate, triethanolamine, calcium formate, hydroxyethyl carboxymethyl cellulose, water is configured, is stirred for B solution；Match
Put phosphoric acid, methacrylic acid is stirred for C solution；
C, when temperature rises to 85 DEG C, the step b solution As prepared are added dropwise in reaction kettle in 30 minutes, are reacted 15 minutes；
D, after step c reacts 15 minutes, B solution is added dropwise in reaction kettle, and it is 25-35 minutes to control time for adding, drop
After adding, put and reacted 60-120 minutes under 85 DEG C of environment；
E, it treats that reaction carries out 60 minutes and then added within 15 minutes the C solution to prepare, it is complete to treat that C solution is added dropwise
Later, it reacts 60 minutes at 85 DEG C；
F, it treats after reaction, it is after detection is qualified that reaction product immigration liquid storage kettle is spare by reaction product taking-up backup detection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810061428.5A CN108249810A (en) | 2018-01-23 | 2018-01-23 | A kind of preparation method of strong concrete accelerator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810061428.5A CN108249810A (en) | 2018-01-23 | 2018-01-23 | A kind of preparation method of strong concrete accelerator |
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| CN108249810A true CN108249810A (en) | 2018-07-06 |
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| CN201810061428.5A Pending CN108249810A (en) | 2018-01-23 | 2018-01-23 | A kind of preparation method of strong concrete accelerator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109896771A (en) * | 2019-04-25 | 2019-06-18 | 杨炎轶 | A kind of alkali-free liquid accelerator and preparation method thereof |
| CN110436813A (en) * | 2019-07-11 | 2019-11-12 | 北京工业大学 | A kind of concrete multifunction compound additive and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792959A (en) * | 2005-11-29 | 2006-06-28 | 尚红利 | Alkali-free speed coagulating agent |
| CN104402333A (en) * | 2014-11-11 | 2015-03-11 | 李开成 | Seam-repairing crystallization type waterproof material with high elongation rate |
| CN104446084A (en) * | 2014-11-27 | 2015-03-25 | 湖北工业大学 | Water-soluble coagulant for cement-based cementing material and preparation method of water-soluble coagulant |
| CN104944829A (en) * | 2015-07-01 | 2015-09-30 | 芜湖市晨曦新型建材科技有限公司 | Cement accelerating admixture and preparation method thereof |
-
2018
- 2018-01-23 CN CN201810061428.5A patent/CN108249810A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792959A (en) * | 2005-11-29 | 2006-06-28 | 尚红利 | Alkali-free speed coagulating agent |
| CN104402333A (en) * | 2014-11-11 | 2015-03-11 | 李开成 | Seam-repairing crystallization type waterproof material with high elongation rate |
| CN104446084A (en) * | 2014-11-27 | 2015-03-25 | 湖北工业大学 | Water-soluble coagulant for cement-based cementing material and preparation method of water-soluble coagulant |
| CN104944829A (en) * | 2015-07-01 | 2015-09-30 | 芜湖市晨曦新型建材科技有限公司 | Cement accelerating admixture and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109896771A (en) * | 2019-04-25 | 2019-06-18 | 杨炎轶 | A kind of alkali-free liquid accelerator and preparation method thereof |
| CN110436813A (en) * | 2019-07-11 | 2019-11-12 | 北京工业大学 | A kind of concrete multifunction compound additive and preparation method thereof |
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Application publication date: 20180706 |