CN106186794A - A kind of high-effective concrete anti-cracking curing agent, its preparation method and application - Google Patents
A kind of high-effective concrete anti-cracking curing agent, its preparation method and application Download PDFInfo
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- CN106186794A CN106186794A CN201610525305.3A CN201610525305A CN106186794A CN 106186794 A CN106186794 A CN 106186794A CN 201610525305 A CN201610525305 A CN 201610525305A CN 106186794 A CN106186794 A CN 106186794A
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- curing agent
- cracking
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of high-effective concrete anti-cracking curing agent, prepared by having the co-poly carboxylic acid of reducing function, lauryl alcohol ester, pure-acrylic emulsion, hydroxymethyl cellulose and water mix homogeneously, the described co-poly carboxylic acid with reducing function is using triethylene glycol butyl ether acrylate, HPEG, acrylic acid, methyl methacrylate and allyl glycidyl ether as monomer, adds inorganic chain-transferring agent and prepares as initiator copolyreaction using mineral-type peroxide.The high-effective concrete anti-cracking curing agent of the present invention can solve the volatilization of concrete surface moisture from root, simple in preparation process, energy consumption is low, environmentally safe.In the maintenance of concrete, simple to operate, easy construction, it is possible to substantially reduce the volatilization of concrete surface moisture, reduces the cracking of concrete, the intensity of Concrete Structure.
Description
Technical field
The invention belongs to concrete sealing compound field, be specifically related to a kind of system with anti-cracking function curing compound
Preparation Method and application.
Background technology
Along with the fast development of economic construction, concrete material is widely used in harbour, harbour, bridge, road etc.
In construction, the maintenance of concrete is the important step controlling construction quality, not only influences whether the presentation quality of concrete, also can
The durability of concrete is produced impact.Along with the raising that concrete quality is required, need to reduce or eliminate concrete
Shrink, reduce harm concrete construction brought because of the contraction of concrete.Concrete curing at present is with surface sprinkling, overlay film
Etc. for main, the concrete curing method of this routine, waste time and energy, require higher, especially for abnormal shape for workmen
Xoncrete structure maintenance is difficult to operate.In recent years there is employing curing compound that concrete carries out maintenance, sealing compound Main Function
Mechanism is the purpose by concrete plug-hole or water conservation reach curing concrete.The method that can use spraying because of sealing compound
Construction, can save substantial amounts of manpower and materials, it is possible to reduce the late maintaining cost of concrete, it is to avoid because of the operational error of workman
The concrete curing caused is not enough, and has certain effect for improving the durability tool of concrete construction.
Mostly there is the shortcoming that consumption is big, poisonous, poor water retention property, cracking resistance are low in existing sealing compound.As Xue Bin passes through
Research finds to mix sealing compound prepared by pure-acrylic emulsion, sodium silicate, triethanolamine and methyl silicon sodium alcoholate by compound, finds that 3d has
Effect water retention is close to 80%, and water retention is relatively low, and the method promoting water retention is limited.Concrete curing is it is crucial that coagulation to be reduced
The surface tension of aqueous solution in soil pore, capillary reduction can be effectively reduced the volatilization of moisture.Economization agent is one
Planting the additive that can significantly reduce concrete pore solution surface tension, be little molecule economization agent the most mostly, surface is opened
The reducing effect of power is limited.
The present invention is by triethylene glycol butyl ether acrylate, HPEG, acrylic acid, methyl methacrylate, allyl glycidyl
Glycerin ether synthetic copolymer, utilizes acrylate copolymer to have the advantage of adjustable molecular weight, big point of the different molecular weight of synthesis
Sub-shrinkage type polycarboxylic acid polymer.Again by the co-poly carboxylic acid of reducing function and lauryl alcohol ester, pure-acrylic emulsion, hydroxylmethyl cellulose
Element, water, mix homogeneously obtains high-effective concrete anti-cracking curing agent.After concrete surface spraying sealing compound, shrinkage type polycarboxylic acids
Polymer can be assembled on the surface of concrete surface pore aqueous solution, unique molecular structure and controlled molecular weight energy
Enough significantly decrease the surface tension of aqueous solution, the volatilization of minimizing moisture in pore on concrete surface.And in sealing compound
Other compositions, it is possible to form a kind of volatilization protecting film preventing moisture on the surface of concrete.
Summary of the invention
The primary and foremost purpose of the present invention be in order to overcome in prior art that concrete anticracking sealing compound consumption is big, poor water retention property,
The shortcoming that cracking resistance is low, production cost is high, it is provided that it is efficient that a kind of environmental friendliness, consumption are little, water-retaining property is high, anti-crack ability is strong
The preparation method of concrete anticracking sealing compound.
To achieve these goals, present invention employs techniques below scheme: a kind of high-effective concrete anti-cracking curing agent, its
It is characterised by: by having the co-poly carboxylic acid of reducing function, lauryl alcohol ester, pure-acrylic emulsion, hydroxymethyl cellulose and water mixing
Uniformly prepare, described in have the co-poly carboxylic acid of reducing function be with triethylene glycol butyl ether acrylate, HPEG, propylene
Acid, methyl methacrylate and allyl glycidyl ether, as monomer, add inorganic chain-transferring agent and with mineral-type peroxidating
Thing prepares as initiator copolyreaction.
Specifically, the formulation content of described monomer is: triethylene glycol butyl ether acrylate accounts for monomer gross mass
31%～65%；HPEG accounts for the 1%～8% of monomer gross mass；Acrylic acid accounts for the 8%～20% of monomer gross mass；Metering system
Acid methyl ester accounts for the 5%～25% of monomer gross mass；Allyl glycidyl ether accounts for the 4%～20% of monomer gross mass.
Preferably, described inorganic chain-transferring agent is the one in sodium sulfite or sodium hypophosphite, turns without chain
Move agent and account for the 0.1%～5% of monomer gross mass.
Preferably, described initiator is Ammonium persulfate. and the one in potassium peroxydisulfate, and initiator accounts for monomer gross mass
0.2%～10%.
Preferably, described lauryl alcohol ester accounts for the 1%～4% of end product gross mass.
Preferably, described pure-acrylic emulsion accounts for the 10%～30% of end product gross mass.
Preferably, described hydroxymethyl cellulose accounts for the 0.1%～1% of end product gross mass.
Preferably, described high-effective concrete anti-cracking curing agent is to prepare by the following method:
Add water, chain-transferring agent, triethylene glycol butyl ether acrylate and HPEG in a reservoir, be warmed up to uniform temperature；
After constant temperature half an hour, it is slowly added dropwise initiator, acrylic acid, methyl methacrylate, allyl glycidyl ether, reacts 2.5h,
Being cooled to room temperature, being neutralized to pH value with sodium hydroxide solution is 7～8, prepares the polycarboxylic acids copolymerization with reducing function
Thing；To have co-poly carboxylic acid and lauryl alcohol ester, pure-acrylic emulsion, hydroxymethyl cellulose, the water of reducing function, mix homogeneously is i.e.
Available high-effective concrete anti-cracking curing agent.
The further object of the present invention is to provide the preparation method of above-mentioned high-effective concrete anti-cracking curing agent.
It is a further object of the present invention to provide the application process of above-mentioned high-effective concrete anti-cracking curing agent.
The high-effective concrete anti-cracking curing agent of the present invention has the advantage that product solves concrete surface from root
The volatilization of moisture, simple in preparation process, energy consumption is low, environmentally safe.In the maintenance of concrete, simple to operate, construction
Convenient, it is possible to substantially to reduce the volatilization of concrete surface moisture, reduce the cracking of concrete, the intensity of Concrete Structure.
Detailed description of the invention
Below in conjunction with example, the present invention is described in further detail, but the embodiment of invention is not limited only to this.
Embodiment 1
A kind of high-effective concrete anti-cracking curing agent, is prepared by following methods:
In the four-hole boiling flask with agitator add water 350g, sodium hypophosphite 4.2g as chain-transferring agent, three second two
Alcohol monobutyl ether acrylate 100g, HPEG15g, be warmed up to 80 DEG C, after constant temperature half an hour, is slowly added dropwise Ammonium persulfate. 5g as drawing
Send out agent, and acrylic acid 36g, methyl methacrylate 50g and the mixed solution of allyl glycidyl ether 25g, be added dropwise to complete
After, continue isothermal reaction 2.5h, be cooled to room temperature, being neutralized to pH value with sodium hydroxide solution is 7～8, prepares and has
The co-poly carboxylic acid of reducing function.By the co-poly carboxylic acid 500g of reducing function, lauryl alcohol ester 20g, pure-acrylic emulsion 200g,
Hydroxymethyl cellulose 1.5g, water 300g, join in agitator, stir, and can prepare high-effective concrete cracking resistance maintenance
Agent.
Prepared anti-cracking curing agent is applied to the maintenance of concrete, and concrete operations are as follows:
Sealing compound stirs before spraying, form removal after concrete formation 24h, in concrete surface spraying or brushing one layer
Anti-cracking curing agent.
Performance test is as shown in table 1 below, table 2:
Table 1
Table 2
Embodiment 2
A kind of high-effective concrete anti-cracking curing agent, is prepared by following methods:
Water 350g, sodium hypophosphite 4.2g, triethylene glycol butyl ether propylene is added in the four-hole boiling flask with agitator
Acid esters 250g, HPEG20g, be warmed up to 70 DEG C, after constant temperature half an hour, is slowly added dropwise Ammonium persulfate. 8g, and acrylic acid 36g, first
Base acrylic acid methyl ester. 25g and the mixed solution of allyl glycidyl ether 20g, after being added dropwise to complete, continue isothermal reaction 2.5h, cold
But to room temperature, being neutralized to pH value with sodium hydroxide solution is 7～8, prepares the co-poly carboxylic acid with reducing function.
By the co-poly carboxylic acid 500g of reducing function, lauryl alcohol ester 10g, pure-acrylic emulsion 200g, hydroxymethyl cellulose 1g, water
279.5g, joins in agitator, stirs, and can prepare high-effective concrete anti-cracking curing agent.
Prepared anti-cracking curing agent is applied to the maintenance of concrete, and concrete operations are as follows:
Sealing compound stirs before spraying, form removal after concrete formation 24h, in concrete surface spraying or brushing one layer
Anti-cracking curing agent.
Performance test such as table 3 below, table 4:
Table 3
Table 4
Embodiment 3
A kind of efficient polymer ceramic water reducer, has prepared by following methods to arrive:
Water 350g, sodium hypophosphite 6g, triethylene glycol butyl ether acrylic acid is added in the four-hole boiling flask with agitator
Ester 100g, HPEG17g, be warmed up to 75 DEG C, after constant temperature half an hour, is slowly added dropwise Ammonium persulfate. 15g, and acrylic acid 36g, methyl
Acrylic acid methyl ester. 60g and the mixed solution of allyl glycidyl ether 30g, after being added dropwise to complete, continue isothermal reaction 2.5h, cooling
To room temperature, being neutralized to pH value with sodium hydroxide solution is 7～8, prepares the co-poly carboxylic acid with reducing function.Will
The co-poly carboxylic acid 400g of reducing function, lauryl alcohol ester 20g, pure-acrylic emulsion 250g, hydroxymethyl cellulose 2g, water 300g, add
Enter in agitator, stir, high-effective concrete anti-cracking curing agent can be prepared.
Prepared anti-cracking curing agent is applied to the maintenance of concrete, and concrete operations are as follows:
Sealing compound stirs before spraying, form removal after concrete formation 24h, in concrete surface spraying or brushing one layer
Anti-cracking curing agent.
Performance test is as shown in table 5, table 6:
Table 5
Table 6
Claims (10)
1. a high-effective concrete anti-cracking curing agent, it is characterised in that: by having the co-poly carboxylic acid of reducing function, lauryl alcohol
Ester, pure-acrylic emulsion, hydroxymethyl cellulose and water mix homogeneously and prepare, described in have the co-poly carboxylic acid of reducing function be with
Triethylene glycol butyl ether acrylate, HPEG, acrylic acid, methyl methacrylate and allyl glycidyl ether as monomer,
Add inorganic chain-transferring agent and prepare as initiator copolyreaction using mineral-type peroxide.
High-effective concrete anti-cracking curing agent the most according to claim 1, it is characterised in that: the formulation content of described monomer
For: triethylene glycol butyl ether acrylate accounts for the 31%～65% of monomer gross mass；HPEG accounts for the 1%～8% of monomer gross mass；
Acrylic acid accounts for the 8%～20% of monomer gross mass；Methyl methacrylate accounts for the 5%～25% of monomer gross mass；Pi-allyl contracts
Water glycerin ether accounts for the 4%～20% of monomer gross mass.
High-effective concrete anti-cracking curing agent the most according to claim 1, it is characterised in that: described inorganic chain-transferring agent is
One in sodium sulfite or sodium hypophosphite, inorganic chain-transferring agent accounts for the 0.1%～5% of monomer gross mass；Described draw
Sending out agent is Ammonium persulfate. and the one in potassium peroxydisulfate, and initiator accounts for the 0.2%～10% of monomer gross mass.
High-effective concrete anti-cracking curing agent the most according to claim 1, it is characterised in that: the usage amount of described lauryl alcohol ester
For end product gross mass 1%～4%.
High-effective concrete anti-cracking curing agent the most according to claim 1, it is characterised in that: the usage amount of described pure-acrylic emulsion
For end product gross mass 10%～30%.
High-effective concrete anti-cracking curing agent the most according to claim 1, it is characterised in that: making of described hydroxymethyl cellulose
Consumption is the 0.1%～1% of end product gross mass.
High-effective concrete anti-cracking curing agent the most according to claim 1, it is characterised in that there is described in: the poly-of reducing function
The usage amount of polymers of carboxylic acid is the 35%～60% of end product gross mass.
High-effective concrete anti-cracking curing agent the most according to claim 1, it is characterised in that: described high-effective concrete cracking resistance is supported
Protecting agent is to prepare by the following method:
Add water, chain-transferring agent, triethylene glycol butyl ether acrylate and HPEG in a reservoir, be warmed up to 65～85 DEG C；Constant temperature
After half an hour, it is slowly added dropwise initiator, acrylic acid, methyl methacrylate, allyl glycidyl ether, reacts 2.5h, cooling
To room temperature, being neutralized to pH value with sodium hydroxide solution is 7～8, prepares the co-poly carboxylic acid with reducing function；Will
There is co-poly carboxylic acid and lauryl alcohol ester, pure-acrylic emulsion, hydroxymethyl cellulose, the water of reducing function, mix homogeneously
To high-effective concrete anti-cracking curing agent.
9. the method preparing high-effective concrete anti-cracking curing agent as claimed in claim 8, it is characterised in that include following
Step:
Add water, chain-transferring agent, triethylene glycol butyl ether acrylate and HPEG in a reservoir, be warmed up to uniform temperature；
After constant temperature half an hour, it is slowly added dropwise initiator, acrylic acid, methyl methacrylate, allyl glycidyl ether, reaction
2.5h, is cooled to room temperature, and being neutralized to pH value with sodium hydroxide solution is 7～8, prepares the polycarboxylic acids with reducing function
Copolymer；
To have co-poly carboxylic acid and lauryl alcohol ester, pure-acrylic emulsion, hydroxymethyl cellulose, water, the mix homogeneously of reducing function
I.e. can get high-effective concrete anti-cracking curing agent.
10. the application process in concrete curing of the high-effective concrete anti-cracking curing agent as described in as arbitrary in claim 1～8.
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| CN107573099A (en) * | 2017-08-14 | 2018-01-12 | 成都新柯力化工科技有限公司 | A kind of building concrete penetrant crystalline sealing compound and application process |
| CN108821640A (en) * | 2018-07-20 | 2018-11-16 | 广东汉石新材料科技有限公司 | A kind of concrete mortar anti-crack additive and preparation method thereof |
| CN109081650A (en) * | 2018-07-20 | 2018-12-25 | 广东汉石新材料科技有限公司 | One kind imitating natural artificial stone and preparation method thereof |
| CN112960989A (en) * | 2021-02-23 | 2021-06-15 | 杭州华杰商品混凝土有限公司 | Concrete curing agent and preparation method thereof |
| CN114395296A (en) * | 2021-12-28 | 2022-04-26 | 杭州建工建材有限公司 | Curing agent for concrete and preparation method thereof |
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| CN114395296A (en) * | 2021-12-28 | 2022-04-26 | 杭州建工建材有限公司 | Curing agent for concrete and preparation method thereof |
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Effective date of registration: 20181217 Address after: No. 157, Guangzhou City, Guangdong, Guangdong Co-patentee after: CCCC Fourth Harbor Engineering Co., Ltd. Patentee after: Zhongjiao Sihang Engineering Inst. Co., Ltd. Co-patentee after: Guangzhou Harbor Engineering Quality Examination Co., Ltd. Address before: No. 157, Guangzhou City, Guangdong, Guangdong Co-patentee before: Guangzhou Harbor Engineering Quality Examination Co., Ltd. Patentee before: Zhongjiao Sihang Engineering Inst. Co., Ltd. Co-patentee before: CCCC Fourth Harbor Geotechnical Engineering Co., Ltd. Co-patentee before: Guangzhou Sihang Material Technology Co., Ltd. |