CN107352836B - Superpower nucleus of ultra early-strength concrete admixture and preparation method thereof - Google Patents
Superpower nucleus of ultra early-strength concrete admixture and preparation method thereof Download PDFInfo
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- CN107352836B CN107352836B CN201710659285.3A CN201710659285A CN107352836B CN 107352836 B CN107352836 B CN 107352836B CN 201710659285 A CN201710659285 A CN 201710659285A CN 107352836 B CN107352836 B CN 107352836B
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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
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
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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
The invention discloses a kind of superpower nucleus of ultra early-strength concrete admixture, it is mixed by stabilizer, dispersing agent, calcium silicates, triethanolamine, calcium nitrate and water compounding, its raw material composition are as follows: stabilizer 0.2~0.5%, dispersing agent 0.1~0.5%, calcium silicates 8~13%, triethanolamine 5~8%, calcium nitrate 1~10%, surplus is water, total amount 100%；The percentage is mass percent.The dispersing agent that has used chemical stability good, can be such that hydrated cementitious temperature peak shifts to an earlier date at the halide ion without containing corrosion equipment, peak value increases, accelerate hydrated cementitious process, improve hydrated cementitious degree, the early strength of concrete can be effectively improved under the conditions of natural curing, accelerate mold turnover, improve production efficiency, concrete can be made to realize that non-evaporating speed is supported.
Description
Technical field
The present invention relates to a kind of superpower nucleus of ultra early-strength concrete admixture and preparation method thereof.
Background technique
China is concrete consumption big country, with the development of modern construction engineering, such as big load, large span, large volume, fast
Speed, economical and energy saving and special engineered requirement, to concrete, higher requirements are also raised that such as to need concrete to have higher
Durability, workability, intensity, economy etc..Early strength agent is that one kind can be used to that hydrated cementitious is accelerated to harden, and is effectively improved mixed
The concrete admixture of solidifying soil early strength.Have in certain architectural engineerings and the production of cement concrete product indispensable
Important function, economic benefit, project benefit can be brought for architectural engineering, be improved efficiency for the production of cement concrete product
Increase economic benefit.It is real that the production of cement concrete product at present mostly uses steam steam press maintenance and the method for adding early strength agent
The turnover for now accelerating mold, improves production efficiency.There is workability of concrete reduction in traditional early strength agent, intensity is fallen in use
After contracting, elasticity modulus the problems such as stagnant, alkali-aggregate reaction, scum.Moreover, the production of cement concrete product mostly uses steaming at present
Vapour steam press maintenance realizes the turnover for accelerating mold with the method for adding early strength agent, improves production efficiency.Though steam steam press maintenance
The gain in strength of concrete prefabricated element can so be dramatically speeded up but energy consumption is larger is unfavorable for energy-saving and emission-reduction and increases economic efficiency.In
Present Global climate warming under the surging background of emission reduction cry, for developing country, improves efficiency of energy utilization, drop
Low unnecessary energy waste is relatively preferably quick result, more practicable reduction mode.Although the prior art has
Various functional concrete early strength agent, but since formula composition mostly leads to high cost by main component of water-reducing agent, price is high
It is expensive, it is not suitable for practical application, and existing additive corrodes equipment tight compared with the compound containing halide ion is mostly used
Weight.What is more is also added into poisonous and hazardous substance in concrete is early strong.Such as:
Chinese patent CN105293974A concrete early strength agent, is made of sodium sulfocyanate and polycarboxylate water-reducer etc., although
With early strength function, but its cost is too high, sodium sulfocyanate toxic and volatile.
Chinese patent CN104710128A concrete super instant coagulant, is made of polycarboxylate water-reducer, alcamines and inorganic salts
Deng composition, although a large amount of high efficiency water reducing agent effect is good, cost is too high and is that solid will add water to be dissolved before
The labour for leading to increase worker when construction again could be used after preparing.
The compound super instant coagulant of Chinese patent CN105293974A concrete.By groups such as sodium sulfocyanate and polycarboxylate water-reducers
At.The sodium sulfocyanate equally used is toxic, and the water-reducing agent cost used is very high, and using when be also required to be pre-dissolved it,
Increase the workload of construction.
The above-mentioned prior art can all possess more or less problem.Therefore, it is necessary to develop a kind of efficient, inexpensive, real ring
It protects and concrete super instant coagulant that stabilization can be permanently effective, improves the early strength of concrete, improve hydrated cementitious degree, it is real
Existing non-evaporating, speed is supported, and achievees the effect that environmental protection and energy saving.
Summary of the invention
Purpose: to solve the deficiencies in the prior art, the present invention provides a kind of superpower crystalline substance of ultra early-strength concrete admixture
Core,.
Technical solution: in order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of superpower nucleus of ultra early-strength concrete admixture, by stabilizer, dispersing agent, calcium silicates, triethanolamine, nitric acid
Calcium and water compounding mix, raw material composition are as follows: stabilizer 0.2~0.5%, dispersing agent 0.1~0.5%, calcium silicates 8~13%,
Triethanolamine 5~8%, calcium nitrate 1~10%, surplus are water, total amount 100%；The percentage is mass percent.
Preferably, the superpower nucleus of ultra early-strength concrete admixture, it is characterised in that: the stabilizer
For one of hydroxypropyl methyl cellulose, xanthan gum, sodium carboxymethylcellulose, hydroxyethyl cellulose or several mixing.
Preferably, the superpower nucleus of ultra early-strength concrete admixture, it is characterised in that: the dispersing agent
For phosphoric acid ester dispersing agent, polyethylene glycol, polyvinylpyrrolidone, wetting dispersing agent OT-75, fatty alcohol polyoxyethylene ether, nonyl
One of base phenol polyethenoxy ether, anionic polycarboxylate's sodium salt or several mixing.
Preferably, the superpower nucleus of ultra early-strength concrete admixture, it is characterised in that: the calcium silicates
For superfine powder calcium nitrate, partial size 5-20mm.
Preferably, the superpower nucleus of ultra early-strength concrete admixture, which is characterized in that its raw material composition
Are as follows: 0.1% hydroxypropyl methyl cellulose, 0.1% xanthan gum, 0.1 phosphate ester, 0.1% polyethylene glycol, 10% calcium silicates,
6% triethanolamine, 6.56% calcium nitrate, surplus is water, total amount 100%；The percentage is mass percent.
Preferably, the superpower nucleus of ultra early-strength concrete admixture, which is characterized in that its raw material composition
Are as follows: 0.1% hydroxyethyl cellulose, 0.1% carboxymethyl cellulose, 0.1 polyvinylpyrrolidone, 0.1% fatty alcohol polyoxy second
Alkene ether, 10% calcium silicates, 6% triethanolamine, 6.56% calcium nitrate, surplus is water, total amount 100%；The percentage is
Mass percent.
Preferably, the superpower nucleus of ultra early-strength concrete admixture, which is characterized in that its raw material composition
Are as follows: 0.1% hydroxypropyl methyl cellulose, 0.1 wetting dispersing agent OT-75,0.1% nonylphenol polyoxyethylene ether, 8% silicic acid
Calcium, 7% triethanolamine, 5.66% calcium nitrate, surplus are water, total amount 100%；The percentage is mass percent.
Preferably, the superpower nucleus of ultra early-strength concrete admixture, which is characterized in that its raw material composition
Are as follows: 0.1% hydroxypropyl methyl cellulose, 0.1% polyethylene glycol, 0.1% polycarboxylate sodium, 8% calcium silicates, 8% three ethyl alcohol
Amine, 5.66% calcium nitrate, surplus is water, total amount 100%；The percentage is mass percent.
Preferably, the superpower nucleus of ultra early-strength concrete admixture, which is characterized in that its raw material composition
Are as follows: 0.2% hydroxypropyl methyl cellulose, 0.1% polyethylene glycol, 0.1% polycarboxylate sodium, 11% calcium silicates, 8% three second
Hydramine, 7.55% calcium nitrate, surplus is water, total amount 100%；The percentage is mass percent.
The present invention also provides the preparation method of the superpower nucleus of ultra early-strength concrete admixture, the steps include: by
It according to formula rate, at a temperature of 0 DEG C, is stirred when being added dropwise, by stabilizer, dispersing agent, calcium silicates, triethanolamine, calcium nitrate point
Be scattered in water, be uniformly mixed to get.
Preferably, calcium silicon mol ratio is 1.5:1 in raw material.
A kind of superpower nucleus of ultra early-strength concrete admixture provided by the invention and preparation method thereof, to hydrated cementitious
Mechanism, the composition of hydrated product, structure, spatial and temporal distributions and its with the performances such as modern concrete mechanical property, chemical stability it
Between relationship set out, filter out be capable of providing enough excited cement aquations, improve hydrated cementitious degree and intensity substance.Addition
Superpower nucleus can be highly dispersed to excited cement aquation after cement surface by the dispersing agent of polymolecularity energy first.Secondly by
Dispersion infiltration, increases the calcium silicates being added by hydrated cementitious degree.Hydrated cementitious process can be improved again, improve production effect
Rate can make concrete realize that non-evaporating speed is supported, and accelerate mold turnover, economical and practical.Realize energy-saving and emission-reduction truly.
The utility model has the advantages that the superpower nucleus of ultra early-strength concrete admixture provided by the invention, advanced dispersion stablize, are modified
Equal physics, chemical technology are combined, and prepare additive using special stabilizers, dispersing agent, the effective composite synthesis of oxygenation agent
Superpower nucleus method and its volume is low sufficiently improves hydrated cementitious degree, improves cement early strength, accelerates mold turnover,
Improve production efficiency.Dispersing agent, the halide ion without containing corrosion equipment for having used chemical stability good, chemical stability
Good, addition content is low, nontoxic and pollution-free, and hydrated cementitious temperature peak can be made to shift to an earlier date, and peak value increases, and accelerates hydrated cementitious process, improves
Hydrated cementitious degree can effectively improve the early strength of concrete under the conditions of natural curing, accelerate mold turnover, improve life
Efficiency is produced, concrete can be made to realize that non-evaporating speed is supported.It has the advantage that
1) actual amount is less than common super instant coagulant, and additive amount is only the 1.5%-3% of gel material content；
2) chemical stability is preferable, improves hydrated cementitious degree, concrete can be effectively improved under the conditions of natural curing
Early strength, accelerate mold turnover, improve production efficiency；
3) concrete can be made to realize that non-evaporating speed is supported, early strength of concrete is made to improve 10~15 megapascal；
4) at low cost, it is non-corrosive, it is "dead", it is nontoxic, it is not belonging to hazardous chemical.
Specific embodiment
The present invention is illustrated below with reference to example:
Embodiment 1:
A kind of superpower nucleus of ultra early-strength concrete admixture, is formulated by weight by following compositions: by 0.1% hydroxyl
Propyl methocel, 0.1% xanthan gum, 0.1 phosphate ester, 0.1% polyethylene glycol be added three mouthfuls of distilled water containing 30%
In round-bottomed flask at 0 DEG C after mixing evenly, the triethanolamine of 10% calcium silicates and 6% is dissolved in 30% distilled water respectively, also
The distilled water that 6.56% calcium nitrate is dissolved in 10.04% is slowly added dropwise in round-bottomed flask at 0 DEG C, and 2 hours to all components
After mixing, superpower nucleus is obtained.
Embodiment 2
A kind of superpower nucleus of ultra early-strength concrete admixture, is formulated by weight by following compositions: by 0.1% hydroxyl
Ethyl cellulose, 0.1% carboxymethyl cellulose, 0.1 polyvinylpyrrolidone and 0.1% fatty alcohol polyoxyethylene ether addition contain
Have in the three neck round bottom flask of 30% distilled water at 0 DEG C after mixing evenly, respectively by 10% calcium silicates and 6% triethanolamine
It is dissolved in 30% distilled water, the distilled water for being dissolved in 10.04% there are also 6.56% calcium nitrate is slowly added dropwise to round-bottomed flask at 0 DEG C
In, 2 hours to all components after mixing, obtain superpower nucleus.
Embodiment 3
A kind of superpower nucleus of ultra early-strength concrete admixture, is formulated by weight by following compositions: by 0.1% hydroxyl
Propyl methocel, 0.1 wetting dispersing agent OT-75,0.1% nonylphenol polyoxyethylene ether the distilled water containing 30% is added
In three neck round bottom flask at 0 DEG C after mixing evenly, the triethanolamine of 8% calcium silicates and 7% is dissolved in 35% distilled water respectively,
The distilled water for being dissolved in 14.04% there are also 5.66% calcium nitrate is slowly added dropwise in round-bottomed flask at 0 DEG C, and 2 hours to all
Component after mixing, obtains superpower nucleus.
Embodiment 4
A kind of superpower nucleus of ultra early-strength concrete admixture, is formulated by weight by following compositions: by 0.1% hydroxyl
Propyl methocel, 0.1% polyethylene glycol, 0.1% polycarboxylate sodium be added containing 30% distilled water three neck round bottom flask
In at 0 DEG C after mixing evenly, the triethanolamine of 8% calcium silicates and 8% is dissolved in 35% distilled water respectively, there are also 5.66% nitre
The distilled water that sour calcium is dissolved in 13.14% is slowly added dropwise in round-bottomed flask at 0 DEG C, is uniformly mixed to all components within 2 hours
Afterwards, superpower nucleus is obtained.
Embodiment 5
A kind of superpower nucleus of ultra early-strength concrete admixture, is formulated by weight by following compositions: by 0.2% hydroxyl
Propyl methocel, 0.1% polyethylene glycol, 0.1% polycarboxylate sodium be added containing 30% distilled water three neck round bottom flask
In at 0 DEG C after mixing evenly, the triethanolamine of 11% calcium silicates and 8% is dissolved in 30% distilled water respectively, there are also 7.55%
The distilled water that calcium nitrate is dissolved in 13.05% is slowly added dropwise in round-bottomed flask at 0 DEG C, is uniformly mixed to all components within 2 hours
Afterwards, superpower nucleus is obtained.
The present invention is disclosed with preferred embodiment above, so it is not intended to limiting the invention, all to use equivalent replacement
Or equivalent transformation mode technical solution obtained, it is within the scope of the present invention.
Claims (7)
1. a kind of superpower nucleus of ultra early-strength concrete admixture, by stabilizer, dispersing agent, calcium silicates, triethanolamine, calcium nitrate
It is mixed with water compounding, raw material composition are as follows: stabilizer 0.2~0.5%, dispersing agent 0.1~0.5%, calcium silicates 8~13%, three
Ethanol amine 5~8%, calcium nitrate 1~10%, surplus are water, total amount 100%；The percentage is mass percent；
The dispersing agent is phosphoric acid ester dispersing agent, polyethylene glycol, polyvinylpyrrolidone, wetting dispersing agent OT-75, fatty alcohol
One of polyoxyethylene ether, nonylphenol polyoxyethylene ether, anionic polycarboxylate's sodium salt or several mixing；The stabilizer
For one of hydroxypropyl methyl cellulose, xanthan gum, sodium carboxymethylcellulose, hydroxyethyl cellulose or several mixing；
Calcium, silicon mol ratio 1.5:1 in raw material.
2. the superpower nucleus of ultra early-strength concrete admixture according to claim 1, which is characterized in that its raw material composition
Are as follows: 0.1% hydroxypropyl methyl cellulose, 0.1% xanthan gum, 0.1 phosphoric acid ester dispersing agent, 0.1% polyethylene glycol, 10%
Calcium silicates, 6% triethanolamine, 6.56% calcium nitrate, surplus are water, total amount 100%；The percentage is mass percent.
3. the superpower nucleus of ultra early-strength concrete admixture according to claim 1, which is characterized in that its raw material composition
Are as follows: 0.1% hydroxyethyl cellulose, 0.1% sodium carboxymethylcellulose, 0.1 polyvinylpyrrolidone, 0.1% fatty alcohol polyoxy
Vinethene, 10% calcium silicates, 6% triethanolamine, 6.56% calcium nitrate, surplus is water, total amount 100%；The percentage is equal
For mass percent.
4. the superpower nucleus of ultra early-strength concrete admixture according to claim 1, which is characterized in that its raw material composition
Are as follows: 0.1% hydroxypropyl methyl cellulose, 0.1 wetting dispersing agent OT-75,0.1% nonylphenol polyoxyethylene ether, 8% silicic acid
Calcium, 7% triethanolamine, 5.66% calcium nitrate, surplus are water, total amount 100%；The percentage is mass percent.
5. the superpower nucleus of ultra early-strength concrete admixture according to claim 1, which is characterized in that its raw material composition
Are as follows: 0.1% hydroxypropyl methyl cellulose, 0.1% polyethylene glycol, 0.1% polycarboxylate sodium, 8% calcium silicates, 8% three ethyl alcohol
Amine, 5.66% calcium nitrate, surplus is water, total amount 100%；The percentage is mass percent.
6. the superpower nucleus of ultra early-strength concrete admixture according to claim 1, which is characterized in that its raw material composition
Are as follows: 0.2% hydroxypropyl methyl cellulose, 0.1% polyethylene glycol, 0.1% polycarboxylate sodium, 11% calcium silicates, 8% three second
Hydramine, 7.55% calcium nitrate, surplus is water, total amount 100%；The percentage is mass percent.
7. the preparation method of the superpower nucleus of ultra early-strength concrete admixture according to claim 1-6, step
Suddenly are as follows: according to formula rate, at a temperature of 0 DEG C, stirred when being added dropwise, by stabilizer, dispersing agent, calcium silicates, triethanolamine, nitre
Sour calcium is distributed in water, be uniformly mixed to get.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108249846B (en) * | 2017-12-13 | 2020-01-10 | 镇江建科建设科技有限公司 | Steam-curing-free concrete prefabricated part and forming method thereof |
| CN109176851B (en) * | 2018-09-06 | 2020-10-02 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Self-heating heat-preservation maintenance system for railway concrete prefabricated part |
| CN110330257B (en) * | 2019-04-11 | 2021-09-14 | 武汉理工大学 | C-S-H gel nanocrystal core early strength agent and preparation method and application thereof |
| CN110304857B (en) * | 2019-04-11 | 2021-10-08 | 武汉理工大学 | Nano cement-based crystal nucleus type early strength agent and preparation method and application thereof |
| CN110698120B (en) * | 2019-10-30 | 2022-04-08 | 广东红墙新材料股份有限公司 | Precast concrete and curing method thereof |
| CN115231851A (en) * | 2022-07-22 | 2022-10-25 | 广西科达新材料集团有限公司 | High-strength concrete early strength agent and preparation method thereof |
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| CN106746848A (en) * | 2016-09-27 | 2017-05-31 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | A kind of compound light weight cement early strength agent and preparation method and application |
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| CN106746848A (en) * | 2016-09-27 | 2017-05-31 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | A kind of compound light weight cement early strength agent and preparation method and application |
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Denomination of invention: Super crystal nucleus as super early strength type concrete admixture and preparation method of super crystal nucleus Effective date of registration: 20200608 Granted publication date: 20191105 Pledgee: Bank of China Limited Nanjing City Branch Pledgor: NANJING CHANCONS NEW MATERIAL Co.,Ltd. Registration number: Y2020980002854 |
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