CN108275932A - Mirror surface concrete and its preparation process - Google Patents
Mirror surface concrete and its preparation process Download PDFInfo
- Publication number
- CN108275932A CN108275932A CN201810076104.9A CN201810076104A CN108275932A CN 108275932 A CN108275932 A CN 108275932A CN 201810076104 A CN201810076104 A CN 201810076104A CN 108275932 A CN108275932 A CN 108275932A
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- parts
- concrete
- mirror surface
- antifoaming agent
- water
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Classifications
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/06—Oxides, Hydroxides
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of mirror surface concrete and its preparation processes, its key points of the technical solution are that include the component of following parts by weight, 350 ~ 400 parts of cement, 50 ~ 100 parts of flyash, 650 ~ 680 parts of middle sand, 1100 ~ 1150 parts of 5 ~ 25mm rubbles, 8.5 ~ 8.8 parts of additive, 150 ~ 200 parts of water.It is not added with bleed ingredient in concrete, the bubble formation amount in concrete can be reduced；In addition the additive selection carboxylic acid water reducer and antifoaming agent being used cooperatively, carboxylic acid water reducer can introduce a small amount of bubble in actual use, so cooperation antifoaming agent can disappear the bubble of generation, reduce the production quantity of bubble under mating reaction, the compactness of the concrete of formation is high, it controls the addition of flyash and consolidates the bubble phenomenon occurred in the process to reduce concrete, and flyash coordinates glass bead to use, the performance of concrete can be improved, the addition of glass bead can act the finely dispersed function and effect for increasing concrete to a certain extent, and glass bead can use the heat-insulating property of enhancing concrete as thermal insulation material.
Description
Technical field
The present invention relates to concrete field, more particularly to a kind of mirror surface concrete and its preparation process.
Background technology
With the rapid development of modern science and technology, more architecture of high quality materials and advanced construction technology are introduced into and build
It builds in engineering, this makes modern construction engineering build to have obtained a new height.Clear-water concrete is currently state-of-the-art builds
One of material is built, with its fine and smooth exquisite texture, the texture of careful, intimate homogeneous forms its unique aesthetic feeling, for increasingly
More architects are received.Clear-water concrete produces good economic benefit and social benefit.
The construction of clear-water concrete eliminates the operations such as traditional plastering, reduces process, shortens the duration, saves machinery
Take, labour cost and administration fee.In addition, clear-water concrete space of a whole page flatness is good, construction of leveling blanket can be saved, quality is both improved,
Project cost can be reduced again, increases use space, thus there is good economic benefit.In the present for increasingly paying attention to environment
It, the utilization of clear-water concrete reduces the generation of building waste in a way, has good environmental protection and social benefit.
And more and more engineerings are no longer limited to intensity and water resistance to the quality of concrete now, are wanted to presentation quality
Ask higher and higher, so derived mirror surface concrete on the basis of clear-water concrete, but existing mirror surface concrete is being constructed
During easy to produce pin hole bubble, the generation of pin hole bubble influences whether the compactness of mirror surface concrete and apparent.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide a kind of mirror surface concrete, gas can be reduced
The generation of bubble.
The present invention above-mentioned technical purpose technical scheme is that：A kind of mirror surface concrete, including
The component of following parts by weight, 350~400 parts of cement, 50~100 parts of flyash, 650~680 parts of middle sand, 5~25mm rubbles
1100~1150 parts, 8.5~8.8 parts of additive, 150~200 parts of water.
Through the above technical solutions, the addition of flyash can reduce the additive amount of cement, the structure for enhancing concrete is strong
Degree, and flyash proportion is smaller than cement under regular situation, is easy to float during concrete vibrating, so selection flyash
The case where volume is 50~100 parts, while the additive being added can improve the pin hole bubble of concrete, the concrete needle of formation
The content of hole bubble is few, and surface is smooth.
The present invention is further arranged to：3~5 parts of 3.5~5 parts of the additive selection carboxylic acid water reducer and antifoaming agent.
Through the above technical solutions, carboxylic acid water reducer is a kind of high performance water-reducing agent, peptizaiton effect is also played, it can
It prevents concrete slump loss without causing apparent slow setting to a certain extent, higher plasticizing effect is played under low-dosage,
It is high to flow retentivity, it is big that cement adapts to degree of freedom in wide molecular configuration.Synthetic technology is more, high performance leeway is very big, to mixed
Solidifying soil enhancing effect is notable, can reduce concrete shrinkage, the low performance characteristics of harmful substance contents；The addition of antifoaming agent can subtract
Bubble in few concrete, the compactness of the concrete of formation are excellent.
The present invention is further arranged to：The carboxylic acid water reducer selection beta-cyclodextrin class polycarboxylate water-reducer or shrinkage type are poly-
Carboxylic acid water reducer.
Through the above technical solutions, containing carboxyl, sulfonic group in beta-cyclodextrin class polycarboxylate water-reducer.Polyoxyethylene groups and
Beta-cyclodextrin, the compression strength the comparison of the growth without bleeding, segregation phenomenon, and concrete is fast when being used for fresh concrete.
The present invention is further arranged to：The antifoaming agent selects emulsifying antifoaming agent.
Through the above technical solutions, selection emulsifying antifoaming agent its defoaming, suds ability are strong, dosage is few, does not influence to blister
The fundamental property of system；Diffusivity, good penetrability, heat-resist, stability is high when use, and performance is excellent.
The present invention is further arranged to：The emulsifying antifoaming agent selection self-emulsifying type Siloxane-Oxyalkylene Copolymers defoaming
Agent.
Through the above technical solutions, self-emulsifying type Siloxane-Oxyalkylene Copolymers antifoaming agent disappears polyether antifoam agent and organosilicon
The high effective antifoaming agent that the advantages of both infusions combines, have surface tension is low, defoaming is rapid, the suds time is long, it is at low cost,
The characteristics of dosage is few, wide application.
The present invention is further arranged to：The self-emulsifying type Siloxane-Oxyalkylene Copolymers antifoaming agent includes that following preparation walks
Suddenly：
Step 1：5~10 parts of hydrophobic silica and 100 parts of dimethicone are continuously stirred 4~6 at 150~180 DEG C
Hour, 1h is kept the temperature, Siloxane-Oxyalkylene Copolymers silicon cream is made；
Step 2：The Siloxane-Oxyalkylene Copolymers silicon cream of two kinds of different HLB values is dissolved in the water, is sufficiently stirred at 50~60 DEG C
Silicon cream, hexadecanol, thickener is added in 1h, stirs 2 hours, 40 DEG C of heat preservation 1h, discharging.
Through the above technical solutions, the system of self-emulsifying type Siloxane-Oxyalkylene Copolymers antifoaming agent can be completed by above-mentioned steps
It is standby.
The present invention is further arranged to：Further include having 5~10 parts of glass beads in the component.
Through the above technical solutions, that mortar can be improved as aglite in glass bead and easy mobility and self-strength,
The shrinking percentage of material is reduced, on the other hand cooperation flyash enhances the structure of concrete using cement mixing content is on the one hand reduced
Intensity, additionally it is possible to which the function and effect for playing heat preservation overcome that expanded perlite water imbibition is big, fire protecting performance is poor, high temperature has
Evil gas and ageing-resistant weatherability it is low, construction in least big defect.
The another goal of the invention of the present invention is to provide a kind of preparation process of mirror surface concrete, including following preparation
Journey：
S1,10~20 parts of water are poured into blender, blender is soaked；
S2, flyash, middle sand, 5~25mm rubbles pour into blender, uniformly mix；
S3, remaining water is added, is stirred evenly；
S4, blender is added in cement, carboxylic acid water reducer and glass bead, and pipeline is passed through 50 in the mixture into blender
The carbon dioxide gas of~100ml；
S5, antifoaming agent is added in blender, is uniformly mixed.
Through the above technical solutions, being passed through carbon dioxide after cement, water-reducing agent and glass bead are added simultaneously in step 4
Gas can improve the intensity of concrete, and can enhance the mobility of concrete to a certain extent, enhance the dispersion of concrete
Performance；Antifoaming agent is eventually adding in step 5 can remove bubble in concrete in a relatively short period of time, and the concrete of formation causes
Close property is high.
In conclusion the present invention having the beneficial effect that in contrast to the prior art：
1, bleed ingredient is not added in concrete can reduce bubble formation amount in concrete；In addition the additive being used cooperatively
Selection carboxylic acid water reducer and antifoaming agent, carboxylic acid water reducer can introduce a small amount of bubble in actual use, so cooperation defoaming
Agent can disappear the bubble of generation, and the production quantity of bubble is reduced under mating reaction, and the compactness of the concrete of formation is high；
2, the addition of control flyash consolidates the bubble phenomenon occurred in the process to reduce concrete, and flyash matches combined glass
Change microballon to use, the performance of concrete can be improved, the addition of glass bead can act point for increasing concrete to a certain extent
Uniform function and effect are dissipated, and glass bead can use the heat-insulating property of enhancing concrete as thermal insulation material；
3, in concrete preparation process, flyash, middle sand and rubble are added in blender to the mixing that can enhance component first
Then uniformity is added cement, polycarboxylate water-reducer and glass bead and is passed through carbon dioxide gas again, enables to concrete
Good flowing properties, the uniform quality of the concrete of formation.
Specific implementation mode
Invention is further described in detail with reference to embodiments.
Embodiment 1
A kind of mirror surface concrete, includes the component of following parts by weight, 350 parts of cement, 50 parts of flyash, 650 parts of middle sand, 5~
1100 parts of 25mm rubbles, 3.5 parts of beta-cyclodextrin class polycarboxylate water-reducer, 3 parts of self-emulsifying type Siloxane-Oxyalkylene Copolymers antifoaming agent,
150 parts of water.
Embodiment 2~7
Mirror surface concrete described in embodiment 2~7 is intended to component and its content not with the mirror surface concrete in embodiment 1
Together, physical record is in table 1.
Table 1
Embodiment 8
A kind of preparation process of mirror surface concrete, including following preparation process：
S1,10~20 parts of water are poured into blender, blender is soaked；
S2, flyash, middle sand, 5~25mm rubbles pour into blender, uniformly mix；
S3, remaining water is added, is stirred evenly；
S4, blender is added in cement and carboxylic acid water reducer, and pipeline is passed through 50~100ml's in the mixture into blender
Carbon dioxide gas；
S5, antifoaming agent is added in blender, is uniformly mixed.
Note：
(1) self-emulsifying type Siloxane-Oxyalkylene Copolymers antifoaming agent includes following preparation process in Examples 1 to 7：
Step 1：5~10 parts of hydrophobic silica and 100 parts of dimethicone are continuously stirred 4~6 at 150~180 DEG C
Hour, 1h is kept the temperature, Siloxane-Oxyalkylene Copolymers silicon cream is made；
Step 2：The Siloxane-Oxyalkylene Copolymers silicon cream of two kinds of different HLB values is dissolved in the water, is sufficiently stirred at 50~60 DEG C
Silicon cream, hexadecanol, thickener is added in 1h, stirs 2 hours, 40 DEG C of heat preservation 1h, discharging.
(2) synthetic method of beta-cyclodextrin class polycarboxylate water-reducer is：By TPEG (111.3g, 46.4mmol) and MA- β-
CD (19.2g, 14.5mmol) is placed in four round flask (500ml), distilled water (160ml) is added, and flask is placed in water
In bath, 60 DEG C are warming up to, clear solution is obtained under stirring；Then hydrogen peroxide (mass fraction 30%) solution (1.5g) is added.
L-AA (0.25g, 1.42mmol) and 3- mercaptopropionic acids (0.5g, 4.71mmol) are dissolved in distilled water (45ml) to be drawn
Send out agent solution.Monomer solution is dissolved in by acrylic acid (11g, 152.6mmol) and methylpropene sodium sulfonate (2.0g, 12.6mmol)
Distilled water (30ml) obtains.Meanwhile monomer solution and initiator solution are added dropwise to reaction bulb, distinguish used time 3.0h and 3.5h,
Then proceed to reaction 1h.It waits after the completion of reacting, is cooled to room temperature, sodium hydroxide solution (mass fraction 30%) is selected to adjust reaction
The pH of liquid is 6.8.The polymer solution of acquisition is shallow yellow transparent solution, and beta-cyclodextrin class polycarboxylate water-reducer is made.
(3) synthetic method of shrinkage type polycarboxylate water-reducer is：To equipped with thermometer, agitating device, soccer star condenser pipe
Cis-butenedioic anhydride, diethylene glycol monobutyl ether (or the tert-butyl alcohol is added simultaneously) and catalyst, heating, insulation reaction is added in four-hole boiling flask
Then 5h cools down and load weighted TPEG, suitable quantity of water and chain-transferring agent is added into four-hole boiling flask, stirs 5min, start at a low price
Initiator solution, and added in 2h, cool down after continuing insulation reaction 1h, be then neutralized to 6-7 with 30% liquid caustic soda, is made and subtracts
Miniature polycarboxylate water-reducer.
The concrete being prepared in embodiment 1-6 is carried out to the test of structural strength, and test result is recorded in table 2
In.
Test method：
1, according to GB/T 50081-2002《Normal concrete mechanical property tests method standard》Test the mechanical property of concrete
Energy；
2, the slump is tested：Using the slump bucket that a 100mm suitable for reading, lower mouth 200mm, high 300mm are horn-like, will just be made
Penetration concrete after consolidate, then pull up bucket, concrete subtracts slump because dead weight generates slump phenomenon, with bucket high (300mm)
The height of concrete peak, the referred to as slump afterwards.If difference is 10mm, the slump 10.
Appearance：It is consistent to visually observe concrete surface integral color, surface compact, if having bubble.
Table 2
The laboratory test results for comparing above-described embodiment 1~6, the solid colour of concrete made of the component of Examples 1 to 7,
Surface compact has no apparent bubble；And slump stability is high, and it is small to pour front and back aberration.
The above is only the exemplary embodiment of the present invention, protection domain and is not intended to limit the present invention, this hair
Bright protection domain is determined by the attached claims.
Claims (8)
1. a kind of mirror surface concrete, it is characterized in that：Include the component of following parts by weight, 350 ~ 400 parts of cement, flyash 50 ~
100 parts, 650 ~ 680 parts of middle sand, 1100 ~ 1150 parts of 5 ~ 25mm rubbles, 8.5 ~ 8.8 parts of additive, 150 ~ 200 parts of water.
2. mirror surface concrete according to claim 1, it is characterized in that：The additive selects 3.5 ~ 5 parts of carboxylic acid water reducer
With 3 ~ 5 parts of antifoaming agent.
3. mirror surface concrete according to claim 2, it is characterized in that：Carboxylic acid water reducer selection beta-cyclodextrin is birdsed of the same feather flock together carboxylic
Sour water-reducing agent or shrinkage type polycarboxylate water-reducer.
4. mirror surface concrete according to claim 2, it is characterized in that：The antifoaming agent selects emulsifying antifoaming agent.
5. mirror surface concrete according to claim 4, it is characterized in that：The emulsifying antifoaming agent selects self-emulsifying type polyethers
Modified polyorganosiloxane antifoaming agent.
6. mirror surface concrete according to claim 5, it is characterized in that：The self-emulsifying type Siloxane-Oxyalkylene Copolymers defoaming
Agent includes following preparation process：
Step 1：It is small that 5 ~ 10 parts of hydrophobic silica with 100 parts of dimethicone is continuously stirred 4 ~ 6 at 150 ~ 180 DEG C
When, 1h is kept the temperature, Siloxane-Oxyalkylene Copolymers silicon cream is made；
Step 2：The Siloxane-Oxyalkylene Copolymers silicon cream of two kinds of different HLB values is dissolved in the water, is sufficiently stirred at 50 ~ 60 DEG C
Silicon cream, hexadecanol, thickener is added in 1h, stirs 2 hours, 40 DEG C of heat preservation 1h, discharging.
7. mirror surface concrete according to claim 1, it is characterized in that：Further include having 5 ~ 10 parts of vitreous micro- in the component
Pearl.
8. a kind of preparation process of mirror surface concrete, it is characterized in that：Including following preparation process：
S1,10 ~ 20 parts of water are poured into blender, blender is soaked；
S2, flyash, middle sand, 5 ~ 25mm rubbles pour into blender, uniformly mix；
S3, remaining water is added, is stirred evenly；
S4, blender is added in cement and carboxylic acid water reducer, and pipeline is passed through 50 ~ 100ml's in the mixture into blender
Carbon dioxide gas；
S5, antifoaming agent is added in blender, is uniformly mixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810076104.9A CN108275932A (en) | 2018-01-26 | 2018-01-26 | Mirror surface concrete and its preparation process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810076104.9A CN108275932A (en) | 2018-01-26 | 2018-01-26 | Mirror surface concrete and its preparation process |
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| CN108275932A true CN108275932A (en) | 2018-07-13 |
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| CN201810076104.9A Pending CN108275932A (en) | 2018-01-26 | 2018-01-26 | Mirror surface concrete and its preparation process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113493335A (en) * | 2021-07-29 | 2021-10-12 | 上海衡煦节能环保技术有限公司 | Preparation method of early strength mirror surface concrete for composite formwork shear wall |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332891A (en) * | 2013-06-03 | 2013-10-02 | 华侨大学 | Preparation method for clear water mirror surface concrete |
| CN104692730A (en) * | 2015-02-16 | 2015-06-10 | 中交武汉港湾工程设计研究院有限公司 | Fair-faced concrete and application thereof |
-
2018
- 2018-01-26 CN CN201810076104.9A patent/CN108275932A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332891A (en) * | 2013-06-03 | 2013-10-02 | 华侨大学 | Preparation method for clear water mirror surface concrete |
| CN104692730A (en) * | 2015-02-16 | 2015-06-10 | 中交武汉港湾工程设计研究院有限公司 | Fair-faced concrete and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李珠: "《玻化微珠保温材料的系列研究与"城市窑洞"式绿色建筑》", 31 December 2011 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113493335A (en) * | 2021-07-29 | 2021-10-12 | 上海衡煦节能环保技术有限公司 | Preparation method of early strength mirror surface concrete for composite formwork shear wall |
| CN113493335B (en) * | 2021-07-29 | 2023-02-28 | 上海衡煦节能环保技术有限公司 | Preparation method of early strength mirror surface concrete for composite formwork shear wall |
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Application publication date: 20180713 |