CN108373285A - A kind of composite concrete air entraining agent and preparation method thereof - Google Patents
A kind of composite concrete air entraining agent and preparation method thereof Download PDFInfo
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- CN108373285A CN108373285A CN201810278662.3A CN201810278662A CN108373285A CN 108373285 A CN108373285 A CN 108373285A CN 201810278662 A CN201810278662 A CN 201810278662A CN 108373285 A CN108373285 A CN 108373285A
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- air entraining
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- entraining agent
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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
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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
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/304—Air-entrainers
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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 composite concrete air entraining agents and preparation method thereof, belong to building material technical field, the present invention is compound using a variety of air entraining agents, and it is as the main component with water-soluble triterpenoid saponin, and antifreezing agent glycerine, water-reducing agent and sucrose are added, on the basis of ensureing each ingredient performance superposition, the sucrose of addition contributes to, improve finish, the brightness of concrete surface, while the hydrolysis product of cement Ca (OH) in the nano silica fume and concrete added2Reaction reduces the basicity of concrete itself, while generating gel of calcium silicate, and the coarse hole of inside concrete can be filled, reduce the porosity of inside concrete, and the intensity and compactness that improve concrete are assisted with air entraining agent.
Description
Technical field
The invention belongs to building material technical fields, are related to concrete air-entrainer technical field, and in particular to a kind of compound
Concrete air-entrainer and preparation method thereof.
Background technology
Air entraining agent be it is a kind of a large amount of small, closings, the additive for stablizing bubble can be introduced during concrete mixing,
Air entraining agent can not only improve the frost resistance of concrete, can all have an impact to intensity, durability, workability etc., be mixed in concrete
After entering air entraining agent, bleed agent molecule is attracted on each boundary, and a large amount of micro-bubbles generated in whipping process are wrapped up
Come so that bubble can not only be stablized is present in concrete, and diameter is all smaller, distribution is also relatively uniform.
The principal item of air entraining agent includes rosin tree lipid, is that rosin and sodium hydroxide are formed through fertile saponification, then are passed through
Naoh treatment is crossed, the condensation polymer of sodium salt, bleed performance comparative superiority are become, but it is water-soluble general, alkyl and alkyl
Arene-sulfonic acids class is a kind of very universal synthetic detergent, and synthesis technology is simple, soluble easily in water and generate bubble, benzene sulfonamide
Barbiturates air entraining agent is common air entraining agent in current engineering；Fatty alcohol sulfonate class mainly has sodium alkyl sulfate, fatty alcohol
Polyoxyethylene ether and aliphatic alcohol polyethenoxy sodium sulfonate etc..Wherein fatty alcohol polyoxyethylene ether is in nonionic surface active agent
Dosage is larger, development is faster, its advantage is that foam stability energy is good；Lignin sulfonate is calcium lignosulfonate, also except bleed
With water-reduction；With the raising of the requirement of construction quality, single air entraining agent is answered with cannot be satisfied the demand of people
The air entraining agent of conjunction comes into being, it is compound after air entraining agent be superimposed the performance of single air entraining agent, be more advantageous to raising concrete
Easy property and patience, as Chinese patent publication No. CN104496525A disclose one kind by sulfonate type double ion surface-active
Agent, betaine type amphoteric surfac-tant and compound the having of alkylol amide type nonionic surfactant improve the same of air content
When, do not reduce the air entraining agent that coagulation puies forward later strength, Chinese patent publication No. CN106082764A disclose by rosin resin and
The water solubility of p-methyl benzenesulfonic acid and alkyl phenol polyoxyethylene ether combination, the uniform air entraining agent of bubble.
But the application of China's air entraining agent still has significant limitation, the intensity of the uncertain then later stage concrete of additive amount
Influenced to different extents, the function of composite air entraining agent is superimposed poor performance, causes the waste of raw material.
Invention content
According to the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to propose that a kind of composite concrete draws
Gas agent and preparation method thereof, in order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of composite concrete air entraining agent, including following parts by weight ingredient：2.5-3.5 parts of alkylbenzene sulfonate, alkyl sulphur
1-2.5 parts of hydrochlorate, 0.8-1.5 parts of lignosulfonates, 15-25 parts of triterpenoid saponin, 10-18 parts of nano silica fume, 5-10 parts of sucrose,
25-35 parts of fatty alcohol polyoxyethylene ether, 6-15 parts of beta-cyclodextrin, 3-8 parts of water-reducing agent, 1.5-3 parts of glycerine, 150-180 parts of water.
Preferably, the air entraining agent includes following parts by weight ingredient：3 parts of alkylbenzene sulfonate, 1.8 parts of alkylsulfonate,
1.2 parts of lignosulfonates, 23 parts of triterpenoid saponin, 16 parts of nano silica fume, 8 parts of sucrose, 32 parts of fatty alcohol polyoxyethylene ether, β-ring
13 parts of dextrin, 6.5 parts of water-reducing agent, 2.5 parts of glycerine, 170 parts of water.
Preferably, alkyl benzene sulphonate general formula is R-C in the alkylbenzene sulfonate6H4(phenyl ring)-SO3H, wherein R is represented
The hydro carbons of carbon atom 10-20.
Preferably, the general formula of the alkylsulfonate is R-SO3Me, wherein R represents the hydro carbons of carbon atom 13-16, and Me is
One kind in sodium, potassium, magnesium and calcium metal.
Preferably, it is 1-1.5 that the lignosulfonates, which are by mass ratio,:0.5 sodium lignin sulfonate and sulfomethylated lignin
The mixture of sour calcium.
Preferably, the nano silica fume specific surface area is 200-250m2/ g, SiO2Content is not less than 92%, granularity 25-
35nm, the hydrolysis product of cement Ca (OH) in active silica and concrete in nano silica fume2Reaction reduces concrete sheet
The basicity of body, while gel of calcium silicate is generated, the coarse hole of inside concrete can be filled, reduce the hole of inside concrete
Rate assists the intensity and compactness that improve concrete with air entraining agent.
Preferably, the water-reducing agent is commercially available high-efficiency water-reducing agent of poly-carboxylic acid.
A kind of preparation method of composite concrete air entraining agent, the preparation method are as follows：
1) by alkylbenzene sulfonate, alkylsulfonate, lignosulfonates and triterpenoid saponin and 2/3 amount water in temperature 35-
It is stirred at 40 DEG C to being completely dissolved, nano silica fume Fine by Ultrasonic 20-30min is added, obtains solution A；
2) by after sucrose and glycerine heating stirring to complete melt, the water of fatty alcohol polyoxyethylene ether and 1/3 amount is added, stirs
Mix uniformly mixed, cooling solution B；
3) it and then by B solution is added in solution A, stirs 5-10min, water-reducing agent is then added, stir 8-10min, add
Enter beta-cyclodextrin, is ultrasonically treated 10-15min, obtains air entraining agent.
Preferably, the power of the ultrasound is 200-300w, frequency 35-50Hz.
Preferably, the speed of agitator is 200-800r/min.
Compared with prior art, beneficial effects of the present invention：
1. the present invention using it is a variety of with air entraining agent function ingredients mixing, and with water-soluble triterpenoid saponin for mainly at
Part, and antifreezing agent glycerine, water-reducing agent and sucrose are added, on the basis of ensureing each ingredient performance superposition, the sucrose of addition contributes to,
Improve finish, the brightness of concrete surface.
2. the present invention also adds nano silica fume, the hydrolysis product of cement Ca (OH) in silica and concrete is utilized2Instead
The basicity of concrete itself should be reduced, while generating gel of calcium silicate, the coarse hole of inside concrete can be filled, reduces coagulation
Porosity inside soil assists the intensity and compactness that improve concrete with air entraining agent.
3. the present invention is acted on using ultrasound cavitation effect and beta-cyclodextrin cavity, the air entraining agent of preparation is stablized with performance,
The good easy property of concrete.
Specific implementation mode
It below by the description to embodiment, is described in further detail, to help those skilled in the art to this hair
Bright inventive concept, technical solution have more complete, accurate and deep understanding.
Embodiment 1
Composite concrete air entraining agent includes following parts by weight ingredient in the present embodiment：3 parts of alkylbenzene sulfonate, alkyl sulfonic acid
1.8 parts of salt, 1.2 parts of lignosulfonates, 23 parts of triterpenoid saponin, 16 parts of nano silica fume, 8 parts of sucrose, fatty alcohol polyoxyethylene ether
32 parts, 13 parts of beta-cyclodextrin, 6.5 parts of water-reducing agent, 2.5 parts of glycerine, 170 parts of water, wherein alkylbenzene sulfonate is detergent alkylate
Sodium sulfonate, alkylsulfonate are sodium cetanesulfonate, and lignosulfonates are mass ratio 1.5:0.5 sodium lignin sulfonate with
The mixture of calcium lignosulfonate.
Under the preparation method of composite concrete air entraining agent is specific in the present embodiment：
1) weigh each component by formula, by 3 parts of neopelexes, 1.8 parts of sodium cetanesulfonates, 1.2 parts by
Mass ratio 1.5:The lignosulfonates of the mixing of 0.5 sodium lignin sulfonate and calcium lignosulfonate and 23 parts of triterpenoid saponins and
2/3 113 parts of amount water rotating speed 200r/min at 40 DEG C of temperature is stirred to being completely dissolved, and it is 230m that 16 parts of specific surface areas, which are added,2/ g,
SiO2Content 95.5%, granularity are 30nm nano silica fumes, are 200w in power, frequency is Fine by Ultrasonic under 45Hz ultrasonic waves
30min obtains solution A；
2) it is stirred to complete thawing, 32 parts of fat of addition by 8 portions of sucrose and 2.5 parts of glycerine heating and at rotating speed 300r/min
57 parts of the water of fat alcohol polyoxyethylene ether and 1/3 amount, is uniformly mixed in rotating speed 800r/min, cooling solution B；
3) it and then by B solution is added in solution A, stirring while adding, mixing speed 300r/min.Continue after being added dropwise to complete
8min is stirred at rotating speed 200r/min, and 6.5 parts of commercially available high-efficiency water-reducing agent of poly-carboxylic acid are then added, are stirred at rotating speed 500r/min
10min is mixed, 13 parts of beta-cyclodextrins are then added, wherein the molecule cavity inside diameter of beta-cyclodextrin:6.0-6.5A °, high 7.9A, most
It is ultrasonically treated 15min at power 300w, the ultrasonic wave of frequency 35Hz afterwards, obtains air entraining agent liquid, by air entraining agent liquid through vacuum
It filters, it is dry, obtain air entraining agent powder, air entraining agent is directly diluted with water or soluble in water when in use, carries out the preparation of concrete,
Additive amount is the 0.005%-0.02% of concrete total amount.
Embodiment 2
The present embodiment with embodiment 1, unlike in the present embodiment composite concrete air entraining agent include following parts by weight at
Point：2.5 parts of alkylbenzene sulfonate, 1.2 parts of alkylsulfonate, 0.85 part of lignosulfonates, 16 parts of triterpenoid saponin, nano silica fume
10 parts, 5.5 parts of sucrose, 25 parts of fatty alcohol polyoxyethylene ether, 6 parts of beta-cyclodextrin, 3.5 parts of water-reducing agent, 1.5 parts of glycerine, water 155
Part.
Embodiment 3
The present embodiment with embodiment 1, unlike in the present embodiment composite concrete air entraining agent include following parts by weight at
Point：3.5 parts of alkylbenzene sulfonate, 2.5 parts of alkylsulfonate, 1.4 parts of lignosulfonates, 25 parts of triterpenoid saponin, nano silica fume
18 parts, 10 parts of sucrose, 33 parts of fatty alcohol polyoxyethylene ether, 14 parts of beta-cyclodextrin, 8 parts of water-reducing agent, 3 parts of glycerine, 180 parts of water.
Embodiment 4
The present embodiment is cetyl benzenesulfonic acid sodium, alkane with alkylbenzene sulfonate in the present embodiment unlike embodiment 1
Base sulfonate is dodecyl sodium sulfate, and lignosulfonates are mass ratio 1:0.5 sodium lignin sulfonate and lignin sulfonic acid
The mixture of calcium, nano silica fume specific surface area are 200m2/ g, SiO2Content 92.3%, granularity 25nm.
The air entraining agent prepared to embodiment 1-4 is according to GB8076-2008《Concrete admixture》It is tested, wherein coagulation
Soil proportioning (kg/m3) be：M (cement)：M (flyash)：M (sand)：M (handstone)：M (water)=280：56：840：1050：170；
Test result is as follows：
The present invention is exemplarily described above in conjunction with specific embodiment, it is clear that the present invention implements not by upper
The limitation of mode is stated, if the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is used, or
It is not improved by the present invention design and technical solution directly apply to other occasions, protection scope of the present invention it
It is interior.Protection scope of the present invention should be determined by the scope of protection defined in the claims.
Claims (10)
1. a kind of composite concrete air entraining agent, which is characterized in that including following parts by weight ingredient：Alkylbenzene sulfonate 2.5-3.5
Part, 1-2.5 parts of alkylsulfonate, 0.8-1.5 parts of lignosulfonates, 15-25 parts of triterpenoid saponin, 10-18 parts of nano silica fume, sugarcane
It is 5-10 parts sugared, 25-35 parts of fatty alcohol polyoxyethylene ether, 6-15 parts of beta-cyclodextrin, 3-8 parts of water-reducing agent, 1.5-3 parts of glycerine, water
150-180 parts.
2. composite concrete air entraining agent according to claim 1, which is characterized in that the air entraining agent includes following parts by weight
Ingredient：3 parts of alkylbenzene sulfonate, 1.8 parts of alkylsulfonate, 1.2 parts of lignosulfonates, 23 parts of triterpenoid saponin, nano silica fume
16 parts, 8 parts of sucrose, 32 parts of fatty alcohol polyoxyethylene ether, 13 parts of beta-cyclodextrin, 6.5 parts of water-reducing agent, 2.5 parts of glycerine, 170 parts of water.
3. composite concrete air entraining agent according to claim 1, which is characterized in that alkylbenzene in the alkylbenzene sulfonate
Sulfonic acid general formula is R-C6H4(phenyl ring)-SO3H, wherein R represents the hydro carbons of carbon atom 10-20.
4. composite concrete air entraining agent according to claim 1, which is characterized in that the general formula of the alkylsulfonate is R-
SO3Me, wherein R represents the hydro carbons of carbon atom 13-16, and Me is one kind in sodium, potassium, magnesium and calcium metal.
5. composite concrete air entraining agent according to claim 1, which is characterized in that the lignosulfonates are by quality
Than for 1-1.5:0.5 sodium lignin sulfonate and the mixture of calcium lignosulfonate.
6. composite concrete air entraining agent according to claim 1, which is characterized in that the nano silica fume specific surface area is
200-250m2/ g, SiO2Content is not less than 92%, granularity 25-35nm.
7. composite concrete air entraining agent according to claim 1, which is characterized in that the water-reducing agent is that commercially available polycarboxylic acids is high
Imitate water-reducing agent.
8. a kind of preparation method of any composite concrete air entraining agents of claim 1-7, which is characterized in that the preparation
Method is as follows：
1) by alkylbenzene sulfonate, alkylsulfonate, lignosulfonates and triterpenoid saponin and 2/3 amount water in 35-40 DEG C of temperature
Lower stirring is added nano silica fume Fine by Ultrasonic 20-30min, obtains solution A to being completely dissolved；
2) by after sucrose and glycerine heating stirring to complete melt, the water of fatty alcohol polyoxyethylene ether and 1/3 amount is added, stirring is mixed
Close uniform, cooling solution B；
3) it and then by B solution is added in solution A, stirs 5-10min, water-reducing agent is then added, stir 8-10min, β-is added
Cyclodextrin is ultrasonically treated 10-15min, obtains air entraining agent.
9. the preparation method of composite concrete air entraining agent according to claim 8, which is characterized in that the power of the ultrasound
For 200-300w, frequency 35-50Hz.
10. the preparation method of composite concrete air entraining agent according to claim 8, which is characterized in that the speed of agitator
For 200-800r/min.
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| CN201810278662.3A CN108373285A (en) | 2018-03-31 | 2018-03-31 | A kind of composite concrete air entraining agent and preparation method thereof |
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| CN201810278662.3A CN108373285A (en) | 2018-03-31 | 2018-03-31 | A kind of composite concrete air entraining agent and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109133706A (en) * | 2018-09-10 | 2019-01-04 | 郑州靓岛建筑设计有限公司 | A kind of concrete air-entrainer and preparation method thereof |
| CN110078421A (en) * | 2019-04-04 | 2019-08-02 | 启东海中港建材有限公司 | A kind of air entraining agent and the commercial concrete formulation using the air entraining agent |
| CN115745451A (en) * | 2022-11-29 | 2023-03-07 | 核工业北京地质研究院 | Composite modifier and preparation method and application thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109133706A (en) * | 2018-09-10 | 2019-01-04 | 郑州靓岛建筑设计有限公司 | A kind of concrete air-entrainer and preparation method thereof |
| CN109133706B (en) * | 2018-09-10 | 2021-01-15 | 广东潮泰建设有限公司 | Concrete air entraining agent and preparation method thereof |
| CN110078421A (en) * | 2019-04-04 | 2019-08-02 | 启东海中港建材有限公司 | A kind of air entraining agent and the commercial concrete formulation using the air entraining agent |
| CN115745451A (en) * | 2022-11-29 | 2023-03-07 | 核工业北京地质研究院 | Composite modifier and preparation method and application thereof |
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Application publication date: 20180807 |