CN107573099A - A kind of building concrete penetrant crystalline sealing compound and application process - Google Patents
A kind of building concrete penetrant crystalline sealing compound and application process Download PDFInfo
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- CN107573099A CN107573099A CN201710691886.2A CN201710691886A CN107573099A CN 107573099 A CN107573099 A CN 107573099A CN 201710691886 A CN201710691886 A CN 201710691886A CN 107573099 A CN107573099 A CN 107573099A
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Abstract
The present invention relates to building material field, and in particular to a kind of building concrete penetrant crystalline sealing compound, it is characterised in that including following weight component：25 ~ 40 parts of APP, 15 ~ 25 parts of Ludox grain, alkalize 5 ~ 10 parts of protein powder, 3 10 parts of citric acid micelle, 3 ~ 8 parts of alumina silicate magnesium powder, 1 ~ 3 part of high-efficiency water-reducing agent of poly-carboxylic acid；The concrete penetrant crystalline sealing compound, which has, carries out permeation activation, maintenance, the function of connection to microcosmic fine-grain, later concrete curing time is significantly shortened, and can obtain the concrete of higher intensity.Overcome the defects of existing concrete maintenance existence time is long, the numerous and diverse unstable, intensity of maintenance easily reduces.Its application process is further disclosed, the concrete penetrant crystalline sealing compound adds in concrete construction, can substitute the technique that existing concrete carries out surface maintenance completely.Maintenance cost is greatly reduced, improves engineering efficiency.
Description
Technical field
The present invention relates to building material field, and in particular to a kind of building concrete penetrant crystalline sealing compound and application side
Method.
Background technology
As building material is faced with green to low environmental load material and high performance development, traditional foundation construction material
Color transition, technology upgrading and model change.For basic building materials-concrete that dosage is maximum, also constantly adapt to newly
Performance requirement.
Concrete, referred to as " concrete（tóng）”：Refer to be gathered materials cementing integral engineered composite material by binder materials
General designation.The concrete generally said refers to make binder materials with cement, and sandstone is made to gather materials, with water（Additive and admixture can be contained）
Coordinate by a certain percentage, it is agitated obtained by cement concrete.Its large-scale application in different kinds of roads engineering, housing project.
Due to after concrete formation, it is necessary to which the crystallization of gel rubber material continuous aquation, which condenses, can just ultimately form the road surface with intensity.So
Maintenance is most important to lifting pavement strength.
After concrete is poured, need to keep appropriate temperature and enough humidity within a considerable time,
Make the good curing condition of concrete.But because of various reasons such as construction, weather, the maintenance to concrete does not often reach requirement.
Not only influence the growth of early age strength of concrete, it is often more important that scattered because concrete surface moisture drastically evaporates, cause to mix
Native surface drying shrinkage, cracking, fluffing are coagulated, has a strong impact on concrete total quality and the performance of other performances.Such as summer high temperature season
Section construction, temperature difference between inside and outside concrete is larger, causes concrete surface cup shake occur, or even crack occurs, penetrates reinforcing bar guarantor
Sheath, reinforcement corrosion is caused, have a strong impact on concrete component service life.Therefore concrete curing is still concrete structure so far
Build the emphasis and difficult point in thing moulding process.
Therefore the aquation crystallization effect of gel rubber material directly affects the intensity on road surface.And aquation crystallization condenses in the mistake of initial set
It must have necessary temperature, humidity and longer time in journey, to ensure that enough moisture makes hydration reaction carry out completely.It is special
It is not that existing concrete adds and can reduce cost, resistance sulfate attack slag etc. so that hydration reaction becomes slower.Pass
The maintenance process of system is mainly that bag, plastic sheeting, watering maintenance are littered after pavement forming, makes gel rubber material that aquation knot fully occur
Crystalline substance reaction.
But these methods, on the one hand need to conserve for a long time, on the other hand conserve unstable, it is impossible to effectively obstruct water
Divide evaporation, accumulation of salt in the surface soil phenomenon easily occurs in micropore, influences aquation quality, causes pavement strength to reduce for concrete.It is even more important
, existing maintenance technology time length do not adapt to the needs of rapid construction.Especially, it is necessary to quick in urban pavement construction
Construction, quickly comes into operation, the time for leaving maintenance for is few, it is clear that traditional curing has been not suitable with.
It has been reported that by the way that in its direct spraying of the surface of concrete road surface or brushing concrete can be used as using filming emulsion
Sealing compound, one layer of continuous fluid-tight curing in airtight condition film can be formed in concrete surface, to substitute traditional watering maintenance, paving
Membrane curing.As Chinese invention patent CN 104446123A disclose a kind of sealing compound for curing concrete, by methyl silicon
Oil, polybasic carboxylic acid, stannous chloride, coupling agent, pure acrylic latex, hydroxymethyl-propyl cellulose composition, being capable of film forming raising guarantor
Water rate, realize the maintenance to concrete.But the uniformity stability of maintenance still suffers from defect, and curing time is grown.
The content of the invention
For the defects of existing concrete maintenance existence time is long, maintenance is unstable, intensity easily reduces, the present invention proposes one
Kind building concrete penetrant crystalline sealing compound.By forming concrete from the raw material with microcosmic infiltration, maintenance, linkage function
Penetrant crystalline sealing compound, the penetrant crystalline sealing compound, which has, carries out permeation activation, maintenance, the work(of connection to microcosmic fine-grain
Can, significant advantage is to promote concrete firm time in late maintaining to shorten and obtain higher intensity.It is further open
The application process of the penetrant crystalline sealing compound.
To achieve these goals, present invention employs following technical scheme：
A kind of building concrete penetrant crystalline sealing compound, it is characterised in that including following weight component：
25 ~ 40 parts of APP,
15 ~ 25 parts of Ludox grain,
Alkalize 5 ~ 10 parts of protein powder,
Citric acid micelle 3-10 parts,
3 ~ 8 parts of alumina silicate magnesium powder,
1 ~ 3 part of high-efficiency water-reducing agent of poly-carboxylic acid；
The citric acid micelle is that the gluey particulate formed is dried by colloid coating.
APP is dispersed in concrete, is easy to the micro crystal such as hydrated calcium silicate (C-S- in hydrated cementitious generation
H), the surfaces of Ca (OH) 2 wrap up, and by these solid phase matter crystal fine particles quickly bond get up, so as to accelerate further hydration reaction and
Hardening, promote to separate out new, more stable hyrate crystal, these crystal are constantly grown up.
Preferably, in order to realize that APP preferably wraps up aquation micro crystal, the APP selective polymerization degree
For 50-80 APP.
It is further preferred that one in five APPs that it is 50-80 that the APP, which is the degree of polymerization, six APPs
Kind.
Preferably, the Ludox grain-by-grain seed selection Kiselgel A particulate, its pitch-row is in 2.0-3.0nm, specific surface area 650-800
㎡/g, pore volume 0.35-0.4ml/g, there is the good property held to water, its absorptive collection moisture and with particulate in concrete
Form is combined closely with fine-grain, persistently conserves the growth of crystal grain so that the growth of crystal grain is uniformly fine and close.Compared to the later stage
Overlay film, watering oxygen shield, the maintenance of Ludox grain water holding occur, in microcosmic fine-grain, either to conserve efficiency or final maintenance
The intensity of concrete, which has, significantly to be lifted.
It is further preferred that the Ludox grain-by-grain seed selection sodium metasilicate and sulfuric acid reaction, and through made from aging, the processing of sour bubble
Inorganic Ludox grain.
Preferably, the alkalization beans that the alkalization protein powder handles to obtain from sodium hydroxide solution immersion, dry, milling
One kind in powder, alkalization dregs of beans, alkalization clover.Its significant advantage is in later concrete maintenance, has certain swollen
Property and permeability, on the one hand promote the growth of fine-grain, on the other hand promote the bonding of fine-grain, it is close to form bulky grain
Crystalline texture.
The citric acid micelle is that the gluey particulate formed is dried by colloid coating, it is preferred that the citric acid micelle is
Prepare by the following method：One or more in the colloidal materials such as guar gum, alginic acid glue, gelatin, carragheen are dissolved in water
Colloid is formed, colloid is sprayed onto to the citric acid micelle of citric acid particle surface formation in spray dryer.Its significant advantage
It is, in concrete, initial stage only to show the function of common micelle, in concrete hardening curing period, the glued membrane of citric acid micelle
Gradually rupture or because citric acid dissolves gradually release, its property for chelating weak acid has to the calcium silicates fine-grain of aquation
Infiltration, corrode, reactivity, so as to promote to connect growth between aquation, the fine-grain being passivated, form bulky grain crystal grain,
So that the intensity of concrete is lifted in concrete curing.
It was found that concrete in maintenance processes because first cure has lost flowability, therefore, late maintaining is formed
The crystal such as hydrated calcium silicate (C-S-H) be to crystallize in the original location, it is difficult to connect into closely knit entirety, crystal grain is in discontinuous
Shape, therefore strength enhancing unobvious when conserving are hardened, and need prolonged maintenance.In consideration of it, concrete infiltration of the present invention
The composition of crystallization sealing compound is the combination carried out for the microcosmic hardening mechanism of concrete.The penetrant crystalline sealing compound has to micro-
The fine-grain of sight carries out permeation activation, maintenance, the function of connection, and significant advantage is to promote concrete hard in late maintaining
Change the intensity that the time is short and acquisition is higher.It is dispersed in concrete, is easy in the fine of hydrated cementitious generation by APP
Crystal such as hydrated calcium silicate (C-S-H), the surfaces of Ca (OH) 2 parcel, and these solid phase matter crystal fine particles quickly are bonded, from
And accelerate further hydration to react, promote to separate out new, more stable hyrate crystal, these crystal are constantly grown up, further according to
Close crystalline texture is formed by alkalization protein powder, being bonded in for alumina silicate magnesium powder；Ludox grain therein is in concrete
Absorptive collection moisture content is simultaneously combined closely with fine-grain in particulate form, persistently conserves the growth of fine-grain；Citric acid micelle
There is infiltration, erosion, reactivity to the calcium silicates fine-grain of aquation, so as to promote aquation, the fine-grain being passivated
Between connect growth, formed bulky grain crystal grain.
A kind of building concrete penetrant crystalline sealing compound, different from traditional curing compound, its application is to make
It can be added during concrete.Its application process is：Addition is the 2-3% of cement gel dry powder material dosage quality, pre- during use
First it is well mixed with cement gel dry powder material, is then well mixed use with Aggregate, water, additive admixture.
Preferably building concrete penetrant crystalline sealing compound and cement gel dry powder material premix after in 3 days using finishing, exceed
Time limit, its performance can weaken.The resting period is no more than 15 days after recommending premix.
A kind of building concrete penetrant crystalline sealing compound of the present invention and application process, compared with prior art, what it was protruded
Feature and excellent effect are：
1st, the concrete penetrant crystalline sealing compound, which has, carries out permeation activation, maintenance, the function of connection to microcosmic fine-grain,
Later concrete curing time is significantly shortened, and the concrete of higher intensity can be obtained.Overcome existing concrete
The defects of maintenance existence time is long, the numerous and diverse unstable, intensity of maintenance easily reduces, another efficient maintenance is opened for concrete curing
Technological approaches.
2nd, the concrete penetrant crystalline sealing compound adds in concrete construction, can substitute existing concrete progress completely
The technique of surface maintenance.Maintenance cost is greatly reduced, improves engineering efficiency.
3rd, the concrete penetrant crystalline sealing compound raw material sources are abundant, and cost is cheap, and production and application is convenient, is suitable for each
Used in class concrete works, particularly in the concrete works that the duration is tight, intensity requirement is high, the concrete penetrant crystalline is supported
It is optimal selection to protect agent.
Embodiment
Below by way of embodiment, the present invention is described in further detail, but this should not be interpreted as to the present invention
Scope be only limitted to following example.In the case where not departing from above method thought of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
A kind of building concrete penetrant crystalline sealing compound, including following weight component：
The degree of polymerization is 50-80 40 parts of five APP,
25 parts of Kiselgel A particulate,
Alkalize 10 parts of bean cake powder,
10 parts of the citric acid micelle of guar gum coating,
8 parts of alumina silicate magnesium powder,
3 parts of high-efficiency water-reducing agent of poly-carboxylic acid；
Above-mentioned raw materials are dispersed with stirring it is well mixed, then cross 50 mesh sieves obtain building concrete penetrant crystalline sealing compound.
The product of concrete makes：Obtained building concrete penetrant crystalline sealing compound is added into cement gel dry powder material
Be uniformly dispersed, addition be cement gel 3%, then by cement 20kg, flyash 15kg, fine sand 70kg, building stones 100kg,
Water 15kg is well mixed, uniform sampling it is die-filling enter tool smash and shake, 200*200*200 exemplar 3 is made, respectively numbering 1#, 2#,
3#、4#。
Concrete curing：It is quiet to put 2h form removals in the case that relative humidity is more than 45% in 20-30 DEG C of temperature of room temperature.It is natural
Maintenance 1 day, 1# is taken to test concrete strength.Natural curing 2 days, 2# is taken to test concrete strength.Natural curing 3 days, takes 3# to survey
Try concrete strength.Natural curing 7 days, take 4# test concrete strengths as shown in table 1.
Embodiment 2
A kind of building concrete penetrant crystalline sealing compound, including following weight component：
The degree of polymerization is 50-80 30 parts of six APP,
15 parts of pore inorganic silica gel particulate,
Alkalize 5 parts of alfalfa meal,
5 parts of the citric acid micelle of carragheen coating,
8 parts of alumina silicate magnesium powder,
1 part of high-efficiency water-reducing agent of poly-carboxylic acid；
Above-mentioned raw materials are dispersed with stirring it is well mixed, then cross 50 mesh sieves obtain building concrete penetrant crystalline sealing compound.
Embodiment 3
A kind of building concrete penetrant crystalline sealing compound, including following weight component：
The degree of polymerization is 50-80 30 parts of tripolyphosphate ammonium,
15 parts of Kiselgel A particulate,
Alkalize 5 parts of bean powder,
8 parts of the citric acid micelle of guar gum coating,
5 parts of alumina silicate magnesium powder,
3 parts of high-efficiency water-reducing agent of poly-carboxylic acid；
Above-mentioned raw materials are dispersed with stirring it is well mixed, then cross 50 mesh sieves obtain building concrete penetrant crystalline sealing compound.
Control sample 1
The product of concrete makes：Cement 20kg, flyash 15kg, fine sand 70kg, building stones 100kg, water 15kg are well mixed,
Uniform sampling it is die-filling enter tool smash and shake, 200*200*200 exemplar 3 is made, respectively numbering control sample 1#, control sample 2#, contrast
Sample 3#, control sample 4#.
Concrete curing：It is quiet to put 2h form removals in the case that relative humidity is more than 45% in 20-30 DEG C of temperature of room temperature.Pour
Water, overlay film moisture-keeping maintaining 1 day, control sample 1# is taken to test concrete strength.Watering, overlay film moisture-keeping maintaining 2 days, control sample 2# is taken to survey
Try concrete strength.Watering, overlay film moisture-keeping maintaining 3 days, control sample 3# is taken to test concrete strength.Water, overlay film moisture-keeping maintaining 7
My god, take control sample 4# test concrete strengths as shown in table 1.
Table 1：
| Sample | Maintenance 1 day | Maintenance 2 days | Maintenance 3 days | Maintenance 7 days |
| Embodiment 1 | 1# intensity 35.6MPa | 2# intensity 52.2MPa | 3# intensity 55.0MPa | 4# intensity 58.3MPa |
| Control sample 1 | Control sample 1# intensity 12.4MPa | Control sample 2# intensity 16.5MPa | Control sample 3# intensity 18.6MPa | Control sample 4# intensity 22.1MPa |
By test comparison, the concrete penetrant crystalline sealing compound of the embodiment of the present invention 1 is used for concrete curing, need not pour
Under water, mulching plastic film condition, the higher intensity of 52.2MPa is reached within the 2nd day；And concrete penetrant crystalline sealing compound is not added with, pass through biography
The watering overlay film maintenance of system, gain in strength is slow, reaches 22.1MPa within the 7th day.Obvious sealing compound of the present invention is not only able to after saving
Phase numerous and diverse maintaining process, and higher intensity can be reached in the short time, and intensity is apparently higher than traditional water seasoning
Intensity.
Claims (10)
1. a kind of building concrete penetrant crystalline sealing compound, it is characterised in that including following weight component：
25 ~ 40 parts of APP,
15 ~ 25 parts of Ludox grain,
Alkalize 5 ~ 10 parts of protein powder,
Citric acid micelle 3-10 parts,
3 ~ 8 parts of alumina silicate magnesium powder,
1 ~ 3 part of high-efficiency water-reducing agent of poly-carboxylic acid；
The citric acid micelle is that the gluey particulate formed is dried by colloid coating.
A kind of 2. building concrete penetrant crystalline sealing compound according to claim 1, it is characterised in that：The APP choosing
Select the APP that the degree of polymerization is 50-80.
A kind of 3. building concrete penetrant crystalline sealing compound according to claim 1, it is characterised in that：The APP is
The degree of polymerization is one kind in 50-80 five APPs, six APPs.
A kind of 4. building concrete penetrant crystalline sealing compound according to claim 1, it is characterised in that：The Ludox grain-by-grain seed selection
With Kiselgel A particulate, its pitch-row is in 2.0-3.0nm, specific surface area 650-800 ㎡/g, pore volume 0.35-0.4ml/g.
A kind of 5. building concrete penetrant crystalline sealing compound according to claim 1, it is characterised in that：The Ludox grain-by-grain seed selection
With sodium metasilicate and sulfuric acid reaction, and through inorganic Ludox grain made from aging, the processing of sour bubble.
A kind of 6. building concrete penetrant crystalline sealing compound according to claim 1, it is characterised in that：The alkalization protein
One kind that powder is selected in sodium hydroxide solution immersion, dry, the milling bean powder that alkalizes for handling to obtain, the dregs of beans that alkalizes, clover of alkalizing.
A kind of 7. building concrete penetrant crystalline sealing compound according to claim 1, it is characterised in that：The citric acid micelle
It is that the gluey particulate formed is dried by colloid coating.
A kind of 8. building concrete penetrant crystalline sealing compound according to claim 7, it is characterised in that：The citric acid micelle
It is to prepare by the following method：One or more in the colloidal materials such as guar gum, alginic acid glue, gelatin, carragheen are dissolved in
Water forms colloid, and colloid is sprayed onto to the citric acid micelle of citric acid particle surface formation in spray dryer.
9. a kind of application process of the building concrete penetrant crystalline sealing compound as described in claim any one of 1-8, it is characterized in that：
When making concrete, building concrete penetrant crystalline sealing compound can add, and addition is cement gel dry powder material dosage matter
The 2-3% of amount, be well mixed in advance with cement gel dry powder material during use, then with Aggregate, water, additive admixture
Well mixed use.
10. a kind of application process of building concrete penetrant crystalline sealing compound according to claim 9, it is characterized in that：It is described
Preferably building concrete penetrant crystalline sealing compound and cement gel dry powder material premix after in 3 days using finishing.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110273553A (en) * | 2019-05-06 | 2019-09-24 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of method of concrete moisture retention maintenance and surface enhanced |
| CN110845173A (en) * | 2018-08-21 | 2020-02-28 | 江苏省建工建材质量检测中心有限公司 | Method for accelerating static maintenance of concrete product |
| CN114478064A (en) * | 2021-12-28 | 2022-05-13 | 青岛理工大学 | Concrete curing agent, curing coating and preparation method thereof |
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| CN106186794A (en) * | 2016-07-04 | 2016-12-07 | 中交四航工程研究院有限公司 | A kind of high-effective concrete anti-cracking curing agent, its preparation method and application |
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| CN104761212A (en) * | 2015-03-19 | 2015-07-08 | 同济大学 | Low cementitious material self-compact concrete with rice husk ash as internal curing agent |
| CN104987127A (en) * | 2015-06-29 | 2015-10-21 | 青岛祥嘉知识产权服务有限公司 | Long-lasting concrete curing compound |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110845173A (en) * | 2018-08-21 | 2020-02-28 | 江苏省建工建材质量检测中心有限公司 | Method for accelerating static maintenance of concrete product |
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| CN114478064A (en) * | 2021-12-28 | 2022-05-13 | 青岛理工大学 | Concrete curing agent, curing coating and preparation method thereof |
| CN114478064B (en) * | 2021-12-28 | 2022-12-13 | 青岛理工大学 | Concrete curing agent, curing coating and preparation method thereof |
| US11802092B2 (en) | 2021-12-28 | 2023-10-31 | Qingdao university of technology | Concrete curing agent, curing coating layer and preparation method thereof |
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