CN110156373A - Concrete retarder and its preparation method and application - Google Patents
Concrete retarder and its preparation method and application Download PDFInfo
- Publication number
- CN110156373A CN110156373A CN201910451918.0A CN201910451918A CN110156373A CN 110156373 A CN110156373 A CN 110156373A CN 201910451918 A CN201910451918 A CN 201910451918A CN 110156373 A CN110156373 A CN 110156373A
- Authority
- CN
- China
- Prior art keywords
- concrete
- concrete retarder
- water
- retarder according
- cellulose ether
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
Abstract
The present invention relates to a kind of concrete retarders and its preparation method and application.The concrete retarder includes the raw material of following weight percent: carbohydrate 2-20%；Cellulose ether 0.5-5%；Silica 0.5-5%；Bentonite 0.5-10%；Water-base resin 1-20%；Solvent 60-80%；Auxiliary agent 0.5-5%.Above-mentioned concrete retarder, ingredient is simple, at low cost, and product is stablized, and storage period is long, can be used the phase long, retarding effect is good.
Description
Technical field
The present invention relates to building fields, more particularly to concrete retarder and its preparation method and application.
Background technique
Assembled architecture is an emerging architectural construction technology, carries out fabricated construction, concrete by prefabricated components
Prefabricated components make in factory comprising superimposed sheet, composite beam, column, inside and outside wall board etc. will be arranged in the faying face of these components
Rough surface increases surface area, and the adhesive strength of faying face or node is (see JGJ1-2014 " assembled when improving construction assembly
Concrete structure technique regulation " 6.5.5 regulation)；Forming the major measure that concrete rough surface uses is to brush undisguisedly to use coagulation
Then native retarder is washed away with water after component demoulding, forms rough surface.
Undisguisedly with the important auxiliary material that concrete retarder is in assembled type concrete prefabricated part production, usage amount
Greatly, tradition undisguisedly uses concrete retarder complicated component, and production cost is higher, and market price is expensive, in use, must brush
Concrete, usable phase are short in complete 2h.
Summary of the invention
Based on this, the present invention provides a kind of concrete retarder, and ingredient is simple, at low cost, and product is stablized, and storage period is long,
The phase of can be used is long, and retarding effect is good (i.e. undisguised face overall effect is good).
The specific technical proposal is:
A kind of concrete retarder, the raw material including following weight percent:
The concrete retarder includes the raw material of following weight percent in one of the embodiments:
The water-base resin is selected from water-based acrylic resin, aqueous alkide resin, aqueous ring in one of the embodiments,
Oxygen resin or resol resins.
The water-based acrylic resin is acrylic resin soln in one of the embodiments,.
The carbohydrate is in sucrose, glucose, white sugar, brown sugar, maltose and lactose in one of the embodiments,
It is one or more of.
The cellulose ether is selected from methyl cellulose ether or cellulose ether in one of the embodiments,.
The solvent is selected from one or both of second alcohol and water in one of the embodiments,.
The auxiliary agent includes colored pigment in one of the embodiments,.
Wherein, pigment is that uniformity indicator is brushed in mixture homogeneity instruction and use process, is selected as needed.
The present invention also provides a kind of preparation methods of concrete retarder.
The specific technical proposal is:
A kind of preparation method of concrete retarder, comprising the following steps:
By the carbohydrate, the cellulose ether, the silica, the bentonite, the water-base resin, the solvent
With the auxiliary agent mix, stir evenly to get.
The present invention also provides application of the above-mentioned concrete retarder in production concrete prefabricated element.
Above-mentioned concrete retarder is used to form the undisguised face of concrete, i.e. rough surface in one of the embodiments,.
Compared with existing scheme, the invention has the following advantages:
In the formula of concrete retarder of the present invention, water-base resin can with solvent formed solution system, can brush or
The film of one layer of continuous uniform can be formed after the solvent volatilization of the solution system by being sprayed at the mould inner surface of production prefabricated components,
Carbohydrate, cellulose ether, silica and bentonite in retarder can be equably bonded together by the film, and the film can also
The hydrated cementitious (harden) for delaying to contact film surface makes after being washed away after concrete demoulding with water, and the slow setting in the undisguised face of formation is deep
Degree is consistent, and whole retarding effect is good.Meanwhile carbohydrate is conducive to delay the aquation of concrete, extends concrete coagulating time；Fiber
Plain ether, silica and bentonite are used in combination, and are conducive to system thickening；Above-mentioned all raw materials are added in proper proportions
Afterwards, can extending the concrete retarder usable phase, (phase of can be used, which refers to spraying or brushed retarder, to be started, until casting concrete
Preceding time, within the time period, the retarding effect of retarder are best), also, concrete retarder cost of the present invention
Low, product is stablized, and storage period is long.
In addition, the preparation method of concrete retarder of the present invention is simple, without heating.In use, product viscosity is suitable for, it can
It brushes or sprays.
Specific embodiment
Concrete retarder of the invention and its preparation method and application is made below in conjunction with specific embodiment further detailed
Thin explanation.The invention can be realized in many different forms, however it is not limited to embodiments described herein.On the contrary
Ground, the purpose of providing these embodiments is that making to understand the disclosure of invention more thorough and comprehensive.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more phases
Any and all combinations of the listed item of pass.
It is raw materials used in following specific embodiments, if can be derived from commercially available without specified otherwise.
Embodiment 1
The present embodiment provides a kind of concrete retarders, and by weight percentage, raw material is as follows:
Above-mentioned concrete retarder the preparation method is as follows:
Above-mentioned carbohydrate, cellulose ether, silica, bentonite, water-base resin, ethyl alcohol, water and iron oxide red are proportionally claimed
Be mixed evenly after good to get.
Embodiment 2
The present embodiment provides a kind of concrete retarders, and by weight percentage, raw material is as follows:
The preparation method of the present embodiment concrete retarder is same as Example 1.
Embodiment 3
The present embodiment provides a kind of concrete retarders, and by weight percentage, raw material is as follows:
The preparation method of the present embodiment concrete retarder is same as Example 1.
Embodiment 4
The present embodiment provides a kind of concrete retarders, and by weight percentage, raw material is as follows:
The preparation method of the present embodiment concrete retarder is same as Example 1.
Comparative example 1
This comparative example provides a kind of concrete retarder by weight percentage, and raw material is as follows:
The preparation method of the concrete retarder is same as Example 1.
Comparative example 2
Performance test
Investigate usable phase and the undisguised effect of slow setting of concrete retarder made from the various embodiments described above and comparative example, knot
Fruit is as shown in table 1.
Table 1
Note:
A. it slow setting depth: after referring to concrete hardening (referring generally in casting concrete 48 hours) demoulding, is rushed with giant
Washing needs undisguised face (i.e. rough surface), rinses the exposed depth of stone after the difference in height or flushing of front and back；
B. it retarding effect: after referring to concrete hardening demoulding, is finished undisguised face (i.e. rough surface), is presented with giant flushing
Whole retarding effect out, preferably refers to reach and conforms to quality requirements and whole slow setting depth is almost the same, refers to reach well
Meet quality and whole slow setting depth is consistent；
Interpretation of result
As shown in Table 1, the concrete retarder of embodiment 1-4 all has the usable phase higher than 6h, especially embodiment 2
Concrete retarder, the phase can be used to be up to 72h, also, can from the effect that undisguised face (i.e. rough surface) integrally shows
Out, with after the retarder processing of embodiment 1-4, slow setting depth can be consistent, and retarding effect is good.
Relative to embodiment 1-4, water-base resin is not added for comparative example 1, and comparative example 2 replaces with glucose same with slow
The sodium gluconate of solidifying effect, the usable phase of concrete retarder obtained is shorter, also, retarding effect is general or poor.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of concrete retarder, which is characterized in that the raw material including following weight percent:
2. concrete retarder according to claim 1, which is characterized in that the raw material including following weight percent:
3. concrete retarder according to claim 1, which is characterized in that the water-base resin is selected from water soluble acrylic acid tree
Rouge, aqueous alkide resin, aqueous epoxy resins or resol resins.
4. concrete retarder according to claim 3, which is characterized in that the water-based acrylic resin is acrylic acid tree
Lipoprotein solution.
5. concrete retarder according to claim 1, which is characterized in that the carbohydrate is selected from sucrose, glucose, white
One or more of sugar, brown sugar, maltose and lactose.
6. concrete retarder according to claim 1-5, which is characterized in that the cellulose ether is selected from methyl
Cellulose ether or cellulose ether.
7. concrete retarder according to claim 1-5, which is characterized in that the solvent is selected from second alcohol and water
One or both of.
8. concrete retarder according to claim 1-5, which is characterized in that the auxiliary agent includes coloured face
Material.
9. the preparation method of the described in any item concrete retarders of claim 1-8, which comprises the following steps:
By the carbohydrate, the cellulose ether, the silica, the bentonite, the water-base resin, the solvent and institute
State auxiliary agent mixing, stir evenly to get.
10. application of the described in any item concrete retarders of claim 1-8 in production concrete prefabricated element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910451918.0A CN110156373A (en) | 2019-05-28 | 2019-05-28 | Concrete retarder and its preparation method and application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910451918.0A CN110156373A (en) | 2019-05-28 | 2019-05-28 | Concrete retarder and its preparation method and application |
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| CN110156373A true CN110156373A (en) | 2019-08-23 |
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| CN201910451918.0A Pending CN110156373A (en) | 2019-05-28 | 2019-05-28 | Concrete retarder and its preparation method and application |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111360985A (en) * | 2019-12-30 | 2020-07-03 | 远建工业化住宅集成科技有限公司 | Water washing surface coating agent for prefabricated parts |
| CN111732365A (en) * | 2020-07-22 | 2020-10-02 | 湖南大学 | Concrete composite admixture and preparation method thereof |
| CN111848215A (en) * | 2020-07-29 | 2020-10-30 | 浙江大东吴建筑科技有限公司 | Negative corrosion inhibitor capable of adjusting washing depth of exposed aggregate concrete and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109650768A (en) * | 2019-01-29 | 2019-04-19 | 江苏光大生态工程技术有限公司 | A kind of permeable revetment concrete specialist additive |
| CN109734352A (en) * | 2019-01-25 | 2019-05-10 | 中交二航武汉港湾新材料有限公司 | Extra retarded set self-hardening slurry enhances additive and preparation method |
-
2019
- 2019-05-28 CN CN201910451918.0A patent/CN110156373A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109734352A (en) * | 2019-01-25 | 2019-05-10 | 中交二航武汉港湾新材料有限公司 | Extra retarded set self-hardening slurry enhances additive and preparation method |
| CN109650768A (en) * | 2019-01-29 | 2019-04-19 | 江苏光大生态工程技术有限公司 | A kind of permeable revetment concrete specialist additive |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111360985A (en) * | 2019-12-30 | 2020-07-03 | 远建工业化住宅集成科技有限公司 | Water washing surface coating agent for prefabricated parts |
| CN111732365A (en) * | 2020-07-22 | 2020-10-02 | 湖南大学 | Concrete composite admixture and preparation method thereof |
| CN111848215A (en) * | 2020-07-29 | 2020-10-30 | 浙江大东吴建筑科技有限公司 | Negative corrosion inhibitor capable of adjusting washing depth of exposed aggregate concrete and application thereof |
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Application publication date: 20190823 |