CN109721275A - A kind of dedicated brightener of concrete and preparation method thereof - Google Patents
A kind of dedicated brightener of concrete and preparation method thereof Download PDFInfo
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- CN109721275A CN109721275A CN201910169490.0A CN201910169490A CN109721275A CN 109721275 A CN109721275 A CN 109721275A CN 201910169490 A CN201910169490 A CN 201910169490A CN 109721275 A CN109721275 A CN 109721275A
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Abstract
The invention discloses a kind of dedicated brightener of concrete, the brightener includes the component of following parts by weight: 180-220 parts of polycarboxylate superplasticizer mother liquor, 4-6 parts of uvioresistant additive, 2-5 parts of sulfonated melamine compound resin, 50-60 parts of sodium thiosulfate, 5-6 parts of piece alkali, 710-726 parts of water.The present invention has and makes brightener treated the enhancing of agent on crack resistance of concrete ultraviolet radioactive ability, antibacterial bacteriostatic ability enhancing, to increase the effect of the scope of application of concrete.
Description
Technical field
The present invention relates to the technical fields of brightener, more particularly, to a kind of dedicated brightener of concrete and its preparation side
Method.
Background technique
Normal concrete refers to using cement as major gelled material, with water, sand, stone, mixes chemical admixture when necessary
And mineral admixture, cooperate by proper proportion, by artificial stone made of uniform stirring, closely knit molding and maintenance hardening.
In concrete, sand, stone play skeleton function, referred to as aggregate.Cement and water form cement slurry, and cement slurry is wrapped in bone
Simultaneously fill its gap in material surface.After curing, cement slurry plays lubricating action, assigns the certain workability of mixture, convenient for construction.Water
After mud hardening, then aggregate is cemented to a solid entirety.
Concrete is when being fabricated to ground, for specific occasion, such as pavement brick etc., it is required that concrete surface has
There is certain bright and clean degree, to be added with additive-brightener usually in concrete.Brightener can be obviously improved use
The color effect of Common Concrete Pavement brick makes concrete have bright surface.But it for the concrete of outdoor application, mixes
For solidifying soil for a long time by the irradiation of sunlight, the concrete surface added with existing brightener is easy embrittlement decortication, color fading etc.
Phenomenon.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of dedicated brightener of concrete, pass through
Compounding is added with uvioresistant additive in brightener, so that the added concrete for having brightener in the environment such as outdoor, resists
A certain amount of ultraviolet light can be absorbed in ultraviolet additive, to play the effect of protection concrete.
Above-mentioned purpose of the invention has the technical scheme that
A kind of dedicated brightener of concrete, the brightener includes the component of following parts by weight:
By using above-mentioned technical proposal, polycarboxylate superplasticizer mother liquor can reduce concrete water in stirring in brightener
Addition usage amount, polycarboxylate water-reducer concrete particle surface formed one layer of lubricating water film so that between concrete particle
Mobility enhancing save water so that water consumption can greatly reduce.Sulfonated melamine compound resin is as a kind of
Additive can be filled in the gap between concrete particle, so that concrete finish increases.And sulfonation three
Melamine-formaldehyde resin is easy under solar exposure, is deformed, to cause the embrittlement and cracking of concrete.And in brightener
The uvioresistant additive of addition, when sunlight is radiated at concrete surface, a large amount of ultraviolet light is can be absorbed in uvioresistant additive,
To protect sulfonated melamine compound resin to a certain extent, so that the property of concrete is more stable, applicable situation is more
Extensively.Sodium thiosulfate in brightener plays the role of early strength agent, improves the intensity of concrete early stage.
The present invention is further arranged to: the defoaming agent for being also 0.8-1.2 parts added with parts by weight in the brightener, institute
Stating defoaming agent includes following components in percentage by weight:
By using above-mentioned technical proposal, when in use, polycarboxylate superplasticizer mother liquor therein can reduce brightener
The surface tension of concrete, so that concrete is readily incorporated a certain amount of gas during stirring and generates bubble,
When the volume of bubble is excessive, bubble has large effect for performances such as intensity, the weatherabilities of concrete, and defoaming agent can
To control the generation of these air pockets and abolish.Dimethicone and polyethers all have hydrophilic and lipophilic group, can be with gas
The ingredient mixing for steeping surface, so that the stability on bubble surface layer is destroyed, so that bubble is abolished.
The present invention is further arranged to: the brightener is also added with the water-retaining agent that parts by weight are 4-6 parts, the water conservation
Agent includes following components in percentage by weight:
Sodium Polyacrylate 40%-50%；
Gamma-polyglutamic acid 30%-40%；
Chitosan 10%-20%.
By using above-mentioned technical proposal, Sodium Polyacrylate, gamma-polyglutamic acid and chitosan can all generate crosslinking, thus
The resin of reticular structure is formed, and there are certain concentration differences outside the hydrophilic radical and electrolyte inside resin and resin
It is different, external water is sucked inside resin, until concentration difference disappearance, and when concrete discharge reduction in whipping process, tree
Concentration difference is presented between inside outside rouge, so that the water of resin absorbed inside flows into resin external complement concrete
Water, so that the water content transformation in concrete is steady, the property of concrete whipping process concrete is more stable, is not susceptible to office
Phenomena such as portion's reunion flocculation, so that the filling of sulfonated melamine compound resin is more uniform in brightener.And chitosan
All there is excellent antibacterial bacteriostatic performance with gamma-polyglutamic acid, for generating the bacterium of corrosiveness in concrete to concrete
Equal microorganisms play inhibiting effect, to enhance the anti-corrosion capability of concrete.
The present invention is further arranged to: the slump retaining agent for being also 12-28 parts added with parts by weight in the brightener, described
Slump retaining agent includes following components in percentage by weight:
Prenyl polyoxyethylene ether 20%-30%；
Glyceryl monostearate 30%-40%；
Bentonite 30%-40%.
By using above-mentioned technical proposal, the tristerin in slump retaining agent is slowly continued by the hydrolysis of ester group
Carboxyl is released, cement particle surface is with positive charges such as calcium ions, so that carboxylic acid can adsorb cement granules, to reach
Protect the effect collapsed.Prenyl polyoxyethylene ether is adsorbed on cement particle surface, and prenyl polyoxyethylene ether is
Dentation, so that the mobility between cement granules is more preferable, plays certain subtract to increase the sterically hindered of cement particle surface
Water effect.
The present invention is further arranged to: the uvioresistant additive includes following components in percentage by weight:
Titania powder 70%-80%；
Additive 20-30%.
By using above-mentioned technical proposal, ultraviolet light, which can be absorbed, in titanium dioxide can also reflect a certain amount of ultraviolet spoke
It penetrates, additive is attached on titania powder, and additive itself has the ability of certain absorption ultraviolet light, thus and dioxy
Change titanium powder synergistic effect, further increase the absorbability to ultraviolet light, to be risen to the increased concrete of surface smoothness
To a greater degree of protective effect.
The present invention is further arranged to: include following components in percentage by weight in the additive:
High density polyethylene (HDPE) 40%-50%；
Benzotriazole 20%-30%；
P dimethylamine 20%-30%.
By using above-mentioned technical proposal, benzotriazole and p dimethylamine have certain absorbability for ultraviolet light,
In conjunction with titania powder, benzotriazole and p dimethylamine are entrained in high density polyethylene (HDPE) high density polyethylene (HDPE), thus
So that benzotriazole and p dimethylamine are integrated to titanium dioxide powder particles surface by polyethylene, so that benzotriazole and right
Benzene dimethylamine can be acted synergistically with auxiliary silica titanium with titanium dioxide, to improve the absorbability to ultraviolet light.
A kind of preparation method of the dedicated brightener of concrete, comprising the following steps:
S1: it is spare that defoaming agent, water-retaining agent and slump retaining agent are prepared；
S2: additive preparation, then titania powder is immersed in additive in proportion, after solidification, it is ground into particle,
Obtain uvioresistant additive；
S3: defoaming agent, water-retaining agent and slump retaining agent are added drop-wise in polycarboxylate superplasticizer mother liquor, when dropwise addition, stir polycarboxylic acids
Water-reducing agent mother liquor；
S4: uvioresistant additive is added in mixed liquor obtained in S3 step；
S5；Sodium thiosulfate is added in mixed liquor obtained in S4 step；
S6: piece alkali is added in the mixed liquor obtained in S5, and supplements the water of polycarboxylate superplasticizer mother liquor weight 1/4；
The dedicated brightener of concrete is obtained by above-mentioned 6 steps.
By using above-mentioned technical proposal, water-reducing agent mother liquor and defoaming agent, water-retaining agent, slump retaining agent and uvioresistant additive
Compounding, thus obtain that there is more excellent performance, the brightener that can be cracked with anti-ultraviolet ageing.During the preparation process, defoaming agent,
Water-retaining agent and slump retaining agent are all liquid, and uvioresistant additive is solid particle, and being first uniformly mixed liquid can reduce solid
The particle influence to mixed liquor local concentration after the addition, so that mixed liquor more stable homogeneous.And in compound process in water
Ingredient increase, keep the skin wet so that the concentration of mixed liquor becomes normal level.
Compared with prior art, the beneficial effects of the present invention are:
1, it is added with uvioresistant additive by compounding in brightener, so that the added concrete for having brightener is in room
In outer equal environment, a certain amount of ultraviolet light is can be absorbed in uvioresistant additive, to play the effect of protection concrete；
2, by adding water-retaining agent in brightener, concrete water content during stirring is allowed to keep steady
It is fixed, so that concrete is not susceptible to the phenomenon that part is reunited.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be described in detail.
Referring to Fig.1, the preparation method of the dedicated brightener of a kind of concrete disclosed by the invention, comprising the following steps:
S1: defoaming agent is with preparing: being uniformly mixed a component in the ratio of following weight percent spare；
Water-retaining agent is prepared: being uniformly mixed a component in the ratio of following weight percent spare；
Sodium Polyacrylate 40%；
Gamma-polyglutamic acid 40%；
Chitosan 20%.
Slump retaining agent is prepared: being uniformly mixed a component in the ratio of following weight percent spare；
Prenyl polyoxyethylene ether 20%；
Glyceryl monostearate 40%；
Bentonite 40%.
S2: a component is uniformly mixed additive preparation in the ratio of following weight percent；
High density polyethylene (HDPE) 40%；
Benzotriazole 30%；
P dimethylamine 30%.
Titania powder is immersed in additive in the following proportions again, after solidification, particle is ground into, obtains uvioresistant
Additive；
Titania powder and additive are by weight percentage are as follows:
Titania powder 80%；
Additive 20%.
S3: the slump retaining agent of the defoaming agent of 0.8 parts by weight, the water-retaining agent of 4 parts by weight and 12 parts by weight is added drop-wise to 180 weight
In the polycarboxylate superplasticizer mother liquor of number, when dropwise addition, polycarboxylate superplasticizer mother liquor is stirred；
S4: the uvioresistant additive of 4 parts by weight is added in mixed liquor obtained in S3 step；
S5；The sodium thiosulfate of 50 parts by weight is added in mixed liquor obtained in S4 step；
S6: the piece alkali of 5 parts by weight is added in the mixed liquor obtained in S5, and supplements polycarboxylate superplasticizer mother liquor weight 1/
4 water；
The dedicated brightener of concrete is obtained by above-mentioned 6 steps.
Embodiment 2- is the difference from embodiment 1 is that each component is calculated by weight as following table in brightener.
Embodiment 6-9 is the difference from embodiment 1 is that each component is following table by weight percentage in defoaming agent.
| Embodiment | Dimethicone | Polyethers | Emulsifier | Dispersing agent |
| Embodiment 6 | 42.5 | 17.5 | 30 | 10 |
| Embodiment 7 | 45 | 20 | 27.5 | 7.5 |
| Embodiment 8 | 47.5 | 22.5 | 25 | 5 |
| Embodiment 9 | 50 | 25 | 22.5 | 2.5 |
Embodiment 10-17 is the difference from embodiment 1 is that each component is following table by weight percentage in water-retaining agent.
| Embodiment | Sodium Polyacrylate | Gamma-polyglutamic acid | Chitosan |
| Embodiment 10 | 42.5 | 37.5 | 20 |
| Embodiment 11 | 45 | 35 | 20 |
| Embodiment 12 | 47.5 | 32.5 | 20 |
| Embodiment 13 | 50 | 30 | 20 |
| Embodiment 14 | 47.5 | 35 | 17.5 |
| Embodiment 15 | 50 | 35 | 15 |
| Embodiment 16 | 47.5 | 40 | 12.5 |
| Embodiment 17 | 50 | 40 | 10 |
Embodiment 18-25 is the difference from embodiment 1 is that each component is following table by weight percentage in slump retaining agent.
Under embodiment 26-29 is the difference from embodiment 1 is that each component is by weight percentage in uvioresistant additive
Table.
| Embodiment | Titania powder | Additive |
| Embodiment 26 | 77.5 | 22.5 |
| Embodiment 27 | 75 | 25 |
| Embodiment 28 | 72.5 | 27.5 |
| Embodiment 29 | 70 | 30 |
Embodiment 30-37 is the difference from embodiment 1 is that each component is calculated by weight as following table in additive.
Comparative example
Comparative example 1 is the difference from embodiment 1 is that be not added with uvioresistant additive in brightener；
Comparative example 2 is the difference from embodiment 1 is that be not added with additive in uvioresistant additive；
Comparative example 3 is the difference from embodiment 1 is that be not added with water-retaining agent in brightener.
Detection method
Uvioresistant test
Test process: strong ultraviolet radiation tested sample surface is used, the aging on surface is accelerated.
Test apparatus: ultraviolet light irradiation case, ultraviolet lamp light pipe (20W, central wavelength 254nm2pcs).
Test parameter: height of the fluorescent tube apart from institute's sample is 0.5m, irradiation time 72H.
Test data:
Conclusion: it as seen from the above table, using the concrete after 1 brightener of embodiment under long-time strong ultraviolet radiation, mixes
Solidifying soil sample is there is no occurring apparent discoloration, and 1 brightener of corresponding comparative example treated concrete sample
Under long-time strong ultraviolet radiation, there is discoloration and cracking in concrete sample surface, and the two comparison is it is found that be added with anti-purple
The brightener of external additive treated concrete has certain hindrance function for ultraviolet light.And use embodiment 1 bright
The comparison of the test result of concrete after agent and the test result using the concrete after 2 brightener of comparative example, it can be seen that
Additive in uvioresistant additive is not added with the uvioresistant ability that will affect concrete, so that under the uvioresistant ability of concrete
Drop.
The test of concrete surface brightness
The area after 3 water-reducing agent mother liquid disposal of concrete and comparative example after 1 water-reducing agent mother liquid disposal of Example is 1m2
Concrete sample, then carrying out vertical irradiation at concrete sample 2m height with 40W fluorescent lamp, then using luminance meter
Measure the brightness of concrete surface.
| Material | Brightness (cd/m2) |
| Use the concrete after 1 brightener of embodiment | 0.8 |
| Use the concrete after 3 brightener of comparative example | 0.3 |
Conclusion: pass through the test comparison of the surface brightness to concrete under fluorescent lamp illumination, the luminance test of You Shangbiao
As a result it is found that being apparently higher than using the brightness of the concrete surface after 1 brightener of embodiment using mixed after 3 brightener of comparative example
The brightness on solidifying soil surface, thus prove that the water-retaining agent added in brightener makes concrete during preparing stirring, coagulation
Water content in soil keeps stablizing, and concrete mixing is more uniform, so that the distribution of each ingredient is more in the concrete handled
It is uniform, so that brightness is improved.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of dedicated brightener of concrete, which is characterized in that the brightener includes the component of following parts by weight:
2. the dedicated brightener of a kind of concrete according to claim 1, it is characterised in that: be also added in the brightener
The defoaming agent that parts by weight are 0.8-1.2 parts, the defoaming agent includes following components in percentage by weight:
3. the dedicated brightener of a kind of concrete according to claim 1, it is characterised in that: the brightener is also added with weight
The water-retaining agent that number is 4-6 parts is measured, the water-retaining agent includes following components in percentage by weight:
Sodium Polyacrylate 40%-50%；
Gamma-polyglutamic acid 30%-40%；
Chitosan 10%-20%.
4. the dedicated brightener of a kind of concrete according to claim 1, it is characterised in that: be also added in the brightener
The slump retaining agent that parts by weight are 12-28 parts, the slump retaining agent includes following components in percentage by weight:
Prenyl polyoxyethylene ether 20%-30%
Glyceryl monostearate 30%-40%；
Bentonite 30%-40%.
5. the dedicated brightener of a kind of concrete according to claim 1, it is characterised in that: be also added in the brightener
4-6 parts of uvioresistant additive, the uvioresistant additive includes following components in percentage by weight:
Titania powder 70%-80%；
Additive 20-30%.
6. the dedicated brightener of a kind of concrete according to claim 5, it is characterised in that: include following in the additive
The component of weight percent:
High density polyethylene (HDPE) 40%-50%；
Benzotriazole 20%-30%；
P dimethylamine 20%-30%.
7. a kind of preparation method of the dedicated brightener of concrete, it is characterised in that the following steps are included:
S1: it is spare that defoaming agent, water-retaining agent and slump retaining agent are prepared；
S2: additive preparation, then titania powder is immersed in additive in proportion, after solidification, it is ground into particle, is obtained
Uvioresistant additive；
S3: defoaming agent, water-retaining agent and slump retaining agent are added drop-wise in polycarboxylate superplasticizer mother liquor, when dropwise addition, stir polycarboxylic acids diminishing
Agent mother liquor；
S4: uvioresistant additive is added in mixed liquor obtained in S3 step；
S5；Sodium thiosulfate is added in mixed liquor obtained in S4 step；
S6: piece alkali is added in the mixed liquor obtained in S5, and supplements the water of polycarboxylate superplasticizer mother liquor weight 1/4；
The dedicated brightener of concrete is obtained by above-mentioned 6 steps.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113060997A (en) * | 2021-04-15 | 2021-07-02 | 陕西黄峪工程材料有限公司 | RPC cover plate for subway evacuation platform and preparation method thereof |
| CN113754392A (en) * | 2021-07-13 | 2021-12-07 | 黑龙江常岭建材科技有限公司 | Quick concrete repair mortar |
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