CN107352832A - A kind of concrete liquid super hardening additive and preparation method - Google Patents
A kind of concrete liquid super hardening additive and preparation method Download PDFInfo
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- CN107352832A CN107352832A CN201710800032.3A CN201710800032A CN107352832A CN 107352832 A CN107352832 A CN 107352832A CN 201710800032 A CN201710800032 A CN 201710800032A CN 107352832 A CN107352832 A CN 107352832A
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- concrete
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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
The invention discloses a kind of concrete liquid super hardening additive and preparation method, by rhodanate, acylate, alcamine compound, nitrate or nitrites are added to the water, and are well mixed, according to solution pH value, PH is adjusted, is liquid super high-early concrete additive after solution detection is qualified；The present invention does not contain the harmful ions such as chlorion and sulfate radical, while early intensity is improved, late strength of concrete is had no adverse effect, below the C40 of early strength additive and early strength water-reducing agent concrete eight hour intensity is up to demoulding strength, prominent early stage enhancing effect is shown, and middle and later periods intensity also increases stabilization, is advantageous to accelerate template turnover, construction speed is improved, beneficial to the durability for improving prefabricated components.
Description
Technical field
The present invention relates to technical field of concrete additives, and in particular to a kind of concrete super hardening additive and its system
Preparation Method, this additive are used in combination with water reducer, can significantly improve early age strength of concrete.
Background technology
Prefabricated buildings build in the ascendant, Beijing at present《On accelerating development the implementation guideline of assembled architecture》In
Mention, realized that assembled architecture accounts for the ratio of new building area and reaches more than 20% by 2018, the ratio reaches to the year two thousand twenty
To more than 30%.Also there are similar target in other provinces and cities.And one of difficult point of the sector is strong to improve concrete early stage as far as possible
Degree, particularly concrete 12h and 24h intensity, accelerate template turnover, improve construction speed.And due to by execution conditions
Limitation, after concrete component completes, the steam curing of short time, or even normal temperature maintenance can only be carried out.The above situation pair
Concrete admixture proposes very high requirement, it is desirable to which additive improves early age strength of concrete.
Polycarboxylic acids early-strength water reducer has preferable effect to the early strength of more than C50 concrete, can accomplish to exempt from
Pressure is steamed, but also is difficult to accomplish that normal temperature oxygen protects.And the concrete members intensity overwhelming majority of assembled architecture is gathered in below C40
Carboxylic acid early-strength water reducer is difficult to the early strength of such concrete reaching qualified position, it is therefore desirable to a kind of super hardening coagulation
The matched effect of soil additive, it is ensured that 8 hours intensity of the concrete members of assembled architecture reach the strong of form removal needs
Degree.So as to accelerate template turnover, construction speed is improved.
The content of the invention
For problem present in background technology, the invention provides a kind of concrete liquid super hardening additive and preparation
A kind of method, it is desirable to provide adaptability is extensive, strong adaptability, technique are simple, excellent performance liquid early strong concrete addition
Agent and preparation method, accelerate the hydration reaction of cement granules, improve its early strength, the additive and early-strength water reducer knot
Close, it can be ensured that C40 concrete members reach the intensity of form removal needs in 12h.
To achieve the above object, the present invention provides following technical scheme：
A kind of concrete liquid super hardening additive, by weight group include：
Rhodanate 5-20 parts
Acylate 5-20 parts
Alcamine compound 1-10 parts
Nitrate or nitrites 5-30 parts
Water 40-70 parts
PH conditioning agents are a small amount of.
A kind of preparation method of concrete liquid super hardening additive, comprises the following steps：
S10：By rhodanate, acylate, alcamine compound, nitrate or nitrites are added to the water, and mix
Close uniform；
S20：According to solution pH value, PH conditioning agents, make solution PH in 6-9.
It is liquid super high-early concrete additive after above-mentioned solution detection is qualified, Gu containing control in 20-60%.
Preferably：Described rhodanate is a kind of or more in sodium sulfocyanate, potassium rhodanide, thiocyanic acid amine and calcium thiocyanate
Kind mixture.
Preferably：Described acylate is one in calcium formate, sodium formate, potassium formate, ammonium formate, sodium lactate, calcium lactate
Kind or a variety of mixtures.
Preferably：Described alcamine compound diethanol amine, triethanolamine, dipropanolamine, tripropanol amine, diisopropanol
One or more mixtures in amine, triisopropanolamine, two butanolamines, three butanolamines.
Preferably：Described nitrate or nitrites are sodium nitrate, potassium nitrate, calcium nitrate, natrium nitrosum, nitrous acid
One or more mixtures in potassium, calcium nitrite.
Preferably：The PH conditioning agents include alkaline conditioner and acid regulator.
Preferably：The alkaline conditioner is：It is one or more in sodium carbonate, sodium hydroxide, sodium acid carbonate.
Preferably：The acid regulator is one or more in formic acid, lactic acid and nitric acid.
Compared with prior art, the beneficial effects of the invention are as follows：Early-strength additive does not contain chlorion and sulphur
The harmful ions such as acid group, while early intensity is improved, late strength of concrete is had no adverse effect.It is early-strength to add
Add below the C40 of agent and early strength water-reducing agent concrete eight hour intensity up to demoulding strength.Show prominent early stage enhancing
Effect, and middle and later periods intensity also increases stabilization, is advantageous to accelerate template turnover, improves construction speed, it is pre- to be also beneficial to raising
The durability of component processed.
Embodiment
With reference to the embodiment in the present invention, the technical scheme in the embodiment of the present invention is clearly and completely retouched
State, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on the present invention
In embodiment, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
Embodiment 1：
12 parts of sodium sulfocyanate, 8 parts of sodium formate, 3 parts of triethanolamine, 10 parts of sodium nitrate, 67 parts of water are taken by weight.In proportion will
Rhodanate, acylate, alcamine compound, nitrate or nitrites are added to the water, and are well mixed；Measure now
Solution pH value, a small amount of sodium carbonate or formic acid PH conditioning agents is added according to the situation of specific pH value, makes solution PH in 6-
9, Gu containing control in 20-60%.
Embodiment 2-5 is different from the content for differing only in each composition of embodiment 1, and preparation method is the same.
Embodiment 2：
15 parts of potassium rhodanide, 6 parts of calcium formate, 2 parts of diethanol amine, 15 parts of natrium nitrosum, 62 parts of water, PH regulations are taken by weight
Agent is a small amount of.
Embodiment 3：
10 parts of sodium sulfocyanate, 10 parts of formic acid, 5 parts of triethanolamine, 10 parts of sodium nitrate, 65 parts of water, PH conditioning agents are a small amount of.
Embodiment 4：
12 parts of sodium sulfocyanate, 10 parts of lactic acid, 5 parts of triethanolamine, 10 parts of sodium nitrate, 65 parts of water, PH conditioning agents are a small amount of.
Embodiment 5：
15 parts of sodium sulfocyanate, 10 parts of sodium lactate, 4 parts of triethanolamine, 10 parts of natrium nitrosum, 61 parts of water, PH conditioning agents are a small amount of.
Contrast experiment analyzes：
In C30 (match ratios：Cement：Sand：Stone：Water：Flyash=1:2.79:3.28:0.59：0.25) this hair, is mixed
Bright early strength additive volume 2.0%, with Early-strength polycarboxylate superplasticizer volume 1.0%.
Tubular pile concrete performance comparison under the conditions of standard curing is tested, and water reducer is solid to be contained to 20%, as a result as follows：
It can be seen that early-strength additive is used cooperatively with Early-strength polycarboxylate superplasticizer by above-mentioned test result,
According to result of the test, between C30 concrete 12h compression strength improves 256-321%, the relatively universal polycarboxylic acids of 1d compression strength
Water reducer improves 35.9-49.6%, and 3d compression strength can increase 18.9-26.8%, later strength is also had no adverse effect.Can
See, mixing early strength additive and being used cooperatively with Early-strength polycarboxylate superplasticizer, the 12h compression strength of C30 concrete can reach the demoulding
Intensity, not only also it is improved largely with a relatively high early strength, its later strength, and continuous steady growth
Based on above-mentioned, present invention has the advantage that：Early-strength additive does not contain chlorion and sulfate radical
Deng harmful ion, while early intensity is improved, late strength of concrete is had no adverse effect.Early-strength additive
Concrete eight hour intensity with below the C40 of early strength water-reducing agent is up to demoulding strength.Show prominent early stage enhancing effect
Fruit, and middle and later periods intensity also increases stabilization, is advantageous to accelerate template turnover, improves construction speed, be also beneficial to improve prefabricated
The durability of component.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (9)
- A kind of 1. concrete liquid super hardening additive, it is characterised in that：Group includes by weightRhodanate 5-20 partsAcylate 5-20 partsAlcamine compound 1-10 partsNitrate or nitrites 5-30 partsWater 40-70 partsPH conditioning agents are a small amount of.
- A kind of 2. preparation method of concrete liquid super hardening additive, it is characterised in that：Comprise the following steps：S10：Rhodanate, acylate, alcamine compound, nitrate or nitrites are added to the water, and mixed equal It is even；S20：According to solution pH value, PH conditioning agents, make solution PH in 6-9.It is liquid super high-early concrete additive after above-mentioned solution detection is qualified, Gu containing control in 20-60%.
- A kind of 3. preparation method of concrete liquid super hardening additive according to claim 2, it is characterised in that：It is described Rhodanate be sodium sulfocyanate, potassium rhodanide, one or more mixtures in thiocyanic acid amine and calcium thiocyanate.
- A kind of 4. preparation method of concrete liquid super hardening additive according to claim 2, it is characterised in that：It is described Acylate be calcium formate, sodium formate, potassium formate, ammonium formate, sodium lactate, one or more mixtures in calcium lactate.
- A kind of 5. preparation method of concrete liquid super hardening additive according to claim 2, it is characterised in that：It is described Alcamine compound diethanol amine, triethanolamine, dipropanolamine, tripropanol amine, diisopropanolamine (DIPA), triisopropanolamine, two fourths One or more mixtures in hydramine, three butanolamines.
- A kind of 6. preparation method of concrete liquid super hardening additive according to claim 2, it is characterised in that：It is described Nitrate or nitrites be sodium nitrate, potassium nitrate, calcium nitrate, natrium nitrosum, potassium nitrite, it is a kind of in calcium nitrite or A variety of mixtures.
- A kind of 7. preparation method of concrete liquid super hardening additive according to claim 2, it is characterised in that：It is described PH conditioning agents include alkaline conditioner and acid regulator.
- A kind of 8. preparation method of concrete liquid super hardening additive according to claim 7, it is characterised in that：It is described Alkaline conditioner is：It is one or more in sodium carbonate, sodium hydroxide, sodium acid carbonate.
- A kind of 9. preparation method of concrete liquid super hardening additive according to claim 7, it is characterised in that：It is described Acid regulator is one or more in formic acid, lactic acid and nitric acid.
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| CN201710800032.3A CN107352832A (en) | 2017-09-07 | 2017-09-07 | A kind of concrete liquid super hardening additive and preparation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853520A (en) * | 2019-03-23 | 2019-06-07 | 浙江华东工程咨询有限公司 | A kind of soft-soil foundation treatment method |
| CN112125559A (en) * | 2020-09-09 | 2020-12-25 | 安徽海螺新材料科技有限公司 | Super early strength concrete additive and preparation method thereof |
| CN114717859A (en) * | 2022-04-02 | 2022-07-08 | 鞍山科顺建筑材料有限公司 | Asphalt-based coating material composition, asphalt-based coating material and preparation method thereof, asphalt waterproof coiled material and preparation method thereof |
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| CN103145368A (en) * | 2013-03-07 | 2013-06-12 | 北京新奥混凝土集团有限公司 | Early-strength water reducer for recycled aggregate concrete |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853520A (en) * | 2019-03-23 | 2019-06-07 | 浙江华东工程咨询有限公司 | A kind of soft-soil foundation treatment method |
| CN109853520B (en) * | 2019-03-23 | 2021-04-13 | 浙江华东工程咨询有限公司 | Soft soil foundation treatment method |
| CN112125559A (en) * | 2020-09-09 | 2020-12-25 | 安徽海螺新材料科技有限公司 | Super early strength concrete additive and preparation method thereof |
| CN112125559B (en) * | 2020-09-09 | 2022-05-20 | 安徽海螺新材料科技有限公司 | Super early strength type concrete additive and preparation method thereof |
| CN114717859A (en) * | 2022-04-02 | 2022-07-08 | 鞍山科顺建筑材料有限公司 | Asphalt-based coating material composition, asphalt-based coating material and preparation method thereof, asphalt waterproof coiled material and preparation method thereof |
| CN114717859B (en) * | 2022-04-02 | 2023-08-18 | 鞍山科顺建筑材料有限公司 | Asphalt-based coating composition, asphalt-based coating and preparation method thereof, asphalt waterproof coiled material and preparation method thereof |
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Application publication date: 20171117 |