CN106431064A - Slow-release polycarboxylate water reducer as well as preparation method and application thereof - Google Patents
Slow-release polycarboxylate water reducer as well as preparation method and application thereof Download PDFInfo
- Publication number
- CN106431064A CN106431064A CN201610891055.5A CN201610891055A CN106431064A CN 106431064 A CN106431064 A CN 106431064A CN 201610891055 A CN201610891055 A CN 201610891055A CN 106431064 A CN106431064 A CN 106431064A
- Authority
- CN
- China
- Prior art keywords
- parts
- water reducer
- poloxamer
- tannic acid
- slow
- 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.)
- Pending
Links
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
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
-
- 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
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
Abstract
The invention discloses a slow-release polycarboxylate water reducer as well as a preparation method and application thereof. The polycarboxylate water reducer comprises the following raw materials in parts by weight: 28-36 parts of polymethacrylic acid, 13-21 parts of red halloysite, 2-6 parts of dicumyl peroxide, 5-12 parts of tannic acid and 3-8 parts of poloxamer. The preparation method comprises the following steps: crushing the red halloysite, adding a tannic acid solution for performing thermal stirring treatment, adding a poloxamer solution for performing thermal treatment, then adding the polymethacrylic acid for performing ultrasonic treatment, filtering, taking out a filtrate, and then adding the dicumyl peroxide for performing thermal treatment to obtain the slow-release polycarboxylate water reducer. The slow-release polycarboxylate water reducer has slow-release performance, good water reducing performance and slump loss resistance, and defoaming function, and is non-corrosive to steel bars, strong in adaptability, stable in performance, non-toxic, pollute-free, and very small in adding amount; a cement mixture is high in fluidity, high in slump loss resistance and good in workability; the slow-release polycarboxylate water reducer can meet requirements on preparation of different concretes, and is widely applied to various pre-mixed and cast-in-place concretes in industrial and civil buildings.
Description
Technical field
The present invention relates to building material technical field, specifically a kind of sustained-release polycarboxylic water reducer and preparation method thereof and
Application.
Background technology
Compared with the high efficiency water reducing agents such as naphthalene system, melamine series, sulfamate, polycarboxylate water-reducer has more excellent
Different performance, such as volume are low, water-reducing rate is high, fresh concrete mobility and slump retaining are good, lower shrinkage, enhancing potentiality are big, ring
The features such as border is friendly, it has also become water reducer development in recent years and the direction applied.Because domestic cement type is numerous and cement product
Matter larger, concrete gravel material inferior quality of fluctuation (clay content and amount containing stone powder is very high and some Machine-made Sand qualities is very poor) etc.
Numerous reasons, the concrete being configured using universal polycarboxylic water reducer also occurs some problems, wherein topmost asks
Topic is exactly that Slump Time losing of Large is excessive, especially long-time long-distance transportation when, may result in concrete slump loss very
Hurry up, this not only affects to construct also can the performance of strong influence concrete and quality.In order to solve problem above, conventional method is
Compound some retarder and water-retaining agent；But the method DeGrain and adaptability is poor, compounding improper can also affect on coagulation
Soil nature energy.Even if although existing polycarboxylate water-reducer is compared with low-dosage, and next determines to greatly improve concrete slump retaining performance in degree,
It is using still higher compared with the numerical value of low-dosage.
Content of the invention
It is an object of the invention to provide a kind of slow release property, good water-reducing property and function of slump protection, defoaming function,
Few sustained-release polycarboxylic water reducer of non-corrosiveness, addition and its preparation method and application, to solve above-mentioned background technology
The problem of middle proposition.
For achieving the above object, the present invention provides following technical scheme：
A kind of sustained-release polycarboxylic water reducer, is made up of the following raw material according to weight portion：Polymethylacrylic acid 28-36 part, red
Halloysitum Rubrum 13-21 part, cumyl peroxide 2-6 part, tannic acid 5-12 part, poloxamer 3-8 part.
As the further scheme of the present invention：Described sustained-release polycarboxylic water reducer, by the following raw material according to weight portion
Composition：Polymethylacrylic acid 30-34 part, Halloysitum Rubrum 15-19 part, cumyl peroxide 3-5 part, tannic acid 7-10 part, pool Lip river
Husky nurse 4-7 part.
As the further scheme of the present invention：Described sustained-release polycarboxylic water reducer, by the following raw material according to weight portion
Composition：32 parts of polymethylacrylic acid, 17 parts of Halloysitum Rubrum, 4 parts of cumyl peroxide, 8 parts of tannic acid, 5 parts of poloxamer.
The present invention another object is that provides a kind of preparation method of sustained-release polycarboxylic water reducer, comprises the steps of：
1）5 times of deionized water of poloxamer and its quality is mixed, prepared Poloxamer solution；By tannic acid and its quality 2
Ethanol mixing again, prepared tannic acid solution；
2）Halloysitum Rubrum is pulverized, cross 120 mesh sieves, add tannic acid solution, stir process 30-35min at a temperature of 68 DEG C, so
Add Poloxamer solution, stir process 30min at a temperature of 86 DEG C afterwards, add polymethylacrylic acid, in 72 DEG C of temperature
Lower supersound process 33min of degree, ultrasonic power is 900W, takes filtrate, is subsequently adding cumyl peroxide, at 65 DEG C after filtration
At a temperature of stir process 55min obtain final product water reducer.
The present invention another object is that offer application in concrete for the described polycarboxylate water-reducer.
Compared with prior art, the invention has the beneficial effects as follows：
Adopt Halloysitum Rubrum in the present invention, successively with tannic acid, poloxamer, it is carried out process reaction, then with polymethyl
The polycarboxylate water-reducer that acid, cumyl peroxide hybrid reaction are obtained has slow release property, and diminishing is in hgher efficiency, shows
Good water-reducing property and function of slump protection, also have a defoaming function.The present invention is to reinforcing bar non-corrosiveness；Strong adaptability, adapts to
Cement in plurality of specifications, model；Stable performance, long-term storage is not stratified, no precipitate；Nontoxic pollution-free, without formaldehyde, to ring
The advantages of border is safe.Addition of the present invention is few, and during with Binder Materials weight than 0.1% addition, concrete practices are laborsaving, cement
Mixture has high fluidity, high-collapse-retentivity and good workability, can meet the requirement preparing different concrete, extensively
It is applied to pre- mix and stir cast-in-place concrete in various industry and civil buildings.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of not making creative work, all
Belong to the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, a kind of sustained-release polycarboxylic water reducer, it is made up of the following raw material according to weight portion：Poly- methyl-prop
28 parts of olefin(e) acid, 13 parts of Halloysitum Rubrum, 2 parts of cumyl peroxide, 5 parts of tannic acid, 3 parts of poloxamer.
5 times of deionized water of poloxamer and its quality is mixed, prepared Poloxamer solution；By tannic acid and its quality
2 times of ethanol mixing, prepared tannic acid solution.Halloysitum Rubrum is pulverized, crosses 120 mesh sieves, add tannic acid solution, in 68 DEG C of temperature
Lower stir process 30min of degree, is subsequently adding Poloxamer solution, and stir process 30min at a temperature of 86 DEG C is adding poly- first
Base acrylic acid, supersound process 33min at a temperature of 72 DEG C, ultrasonic power is 900W, takes filtrate, be subsequently adding peroxide after filtration
Change diisopropylbenzene (DIPB), stir process 55min obtains final product water reducer at a temperature of 65 DEG C.
Embodiment 2
In the embodiment of the present invention, a kind of sustained-release polycarboxylic water reducer, it is made up of the following raw material according to weight portion：Poly- methyl-prop
36 parts of olefin(e) acid, 21 parts of Halloysitum Rubrum, 6 parts of cumyl peroxide, 12 parts of tannic acid, 8 parts of poloxamer.
5 times of deionized water of poloxamer and its quality is mixed, prepared Poloxamer solution；By tannic acid and its quality
2 times of ethanol mixing, prepared tannic acid solution.Halloysitum Rubrum is pulverized, crosses 120 mesh sieves, add tannic acid solution, in 68 DEG C of temperature
Lower stir process 35min of degree, is subsequently adding Poloxamer solution, and stir process 30min at a temperature of 86 DEG C is adding poly- first
Base acrylic acid, supersound process 33min at a temperature of 72 DEG C, ultrasonic power is 900W, takes filtrate, be subsequently adding peroxide after filtration
Change diisopropylbenzene (DIPB), stir process 55min obtains final product water reducer at a temperature of 65 DEG C.
Embodiment 3
In the embodiment of the present invention, a kind of sustained-release polycarboxylic water reducer, it is made up of the following raw material according to weight portion：Poly- methyl-prop
30 parts of olefin(e) acid, 15 parts of Halloysitum Rubrum, 3 parts of cumyl peroxide, 7 parts of tannic acid, 4 parts of poloxamer.
5 times of deionized water of poloxamer and its quality is mixed, prepared Poloxamer solution；By tannic acid and its quality
2 times of ethanol mixing, prepared tannic acid solution.Halloysitum Rubrum is pulverized, crosses 120 mesh sieves, add tannic acid solution, in 68 DEG C of temperature
Lower stir process 32min of degree, is subsequently adding Poloxamer solution, and stir process 30min at a temperature of 86 DEG C is adding poly- first
Base acrylic acid, supersound process 33min at a temperature of 72 DEG C, ultrasonic power is 900W, takes filtrate, be subsequently adding peroxide after filtration
Change diisopropylbenzene (DIPB), stir process 55min obtains final product water reducer at a temperature of 65 DEG C.
Embodiment 4
In the embodiment of the present invention, a kind of sustained-release polycarboxylic water reducer, it is made up of the following raw material according to weight portion：Poly- methyl-prop
34 parts of olefin(e) acid, 19 parts of Halloysitum Rubrum, 5 parts of cumyl peroxide, 10 parts of tannic acid, 7 parts of poloxamer.
5 times of deionized water of poloxamer and its quality is mixed, prepared Poloxamer solution；By tannic acid and its quality
2 times of ethanol mixing, prepared tannic acid solution.Halloysitum Rubrum is pulverized, crosses 120 mesh sieves, add tannic acid solution, in 68 DEG C of temperature
Lower stir process 32min of degree, is subsequently adding Poloxamer solution, and stir process 30min at a temperature of 86 DEG C is adding poly- first
Base acrylic acid, supersound process 33min at a temperature of 72 DEG C, ultrasonic power is 900W, takes filtrate, be subsequently adding peroxide after filtration
Change diisopropylbenzene (DIPB), stir process 55min obtains final product water reducer at a temperature of 65 DEG C.
Embodiment 5
In the embodiment of the present invention, a kind of sustained-release polycarboxylic water reducer, it is made up of the following raw material according to weight portion：Poly- methyl-prop
32 parts of olefin(e) acid, 17 parts of Halloysitum Rubrum, 4 parts of cumyl peroxide, 8 parts of tannic acid, 5 parts of poloxamer.
5 times of deionized water of poloxamer and its quality is mixed, prepared Poloxamer solution；By tannic acid and its quality
2 times of ethanol mixing, prepared tannic acid solution.Halloysitum Rubrum is pulverized, crosses 120 mesh sieves, add tannic acid solution, in 68 DEG C of temperature
Lower stir process 32min of degree, is subsequently adding Poloxamer solution, and stir process 30min at a temperature of 86 DEG C is adding poly- first
Base acrylic acid, supersound process 33min at a temperature of 72 DEG C, ultrasonic power is 900W, takes filtrate, be subsequently adding peroxide after filtration
Change diisopropylbenzene (DIPB), stir process 55min obtains final product water reducer at a temperature of 65 DEG C.
Comparative example 1
In addition to not containing Halloysitum Rubrum, its formula and preparation process are consistent with embodiment 5.
Comparative example 2
Contain only polymethylacrylic acid and Halloysitum Rubrum, its preparation process is consistent with embodiment 5.
The sample that embodiment 1-5 and comparative example 1-2 are obtained, is entered with the High-efficiency polycarboxylic acid water reducer PCE of prior art
Row contrast, using 42.5 cement, iso standard sand, according to GB 8077-2012《Methods for testing uniformity of concrete admixture》Survey
The fluidity of its glue sand and rheological parameters' change with time.In order to measure its defoaming function, homogeneous according to GB/T8077 2012 concrete admixture
Property test method, by automatic interface tension test instrument measure surface tension value.It is embodied as performance comparison data as shown in table 1.
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example 1 | Comparative example 2 | PCE sample | |
| The solid volume of folding | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Initial flow degree mm*mm | 280 | 285 | 290 | 295 | 295 | 200 | 110 | 270 |
| 0.5h fluidity mm*mm | 275 | 280 | 285 | 295 | 295 | 150 | - | 210 |
| 1h fluidity mm*mm | 270 | 270 | 275 | 280 | 285 | - | - | - |
| The 0h slump/divergence（mm/mm） | 220/550 | 220/550 | 225/560 | 225/560 | 230/570 | 210/470 | 200/330 | 220/540 |
| The 1h slump/divergence（mm/mm） | 210/530 | 210/540 | 215/540 | 220/550 | 225/560 | 140/310 | 110/290 | 190/450 |
| The 2h slump/divergence（mm/mm） | 200/500 | 205/510 | 210/520 | 210/520 | 215/530 | 100/250 | 70/200 | 120/330 |
| Surface tension value（mN/m） | 33 | 32 | 30 | 29 | 25 | 58 | 63 | 50 |
From table 1 it follows that the slow release property of the embodiment of the present invention, defoaming function and function of slump protection are superior to PCE sample
Preferably, embodiment 5 is optimum for the effect of product, wherein embodiment 3-5.Comparative example 1-2 compared with Example 5, shows the present invention each
Work under the collective effect of raw material.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment only wraps
Containing an independent technical scheme, only for clarity, those skilled in the art should for this narrating mode of description
Using description as an entirety, the technical scheme in each embodiment can also form those skilled in the art through appropriately combined
Understandable other embodiment.
Claims (5)
1. a kind of sustained-release polycarboxylic water reducer is it is characterised in that be made up of the following raw material according to weight portion：Polymethyl
Sour 28-36 part, Halloysitum Rubrum 13-21 part, cumyl peroxide 2-6 part, tannic acid 5-12 part, poloxamer 3-8 part.
2. sustained-release polycarboxylic water reducer according to claim 1 is it is characterised in that by the following raw material according to weight portion
Composition：Polymethylacrylic acid 30-34 part, Halloysitum Rubrum 15-19 part, cumyl peroxide 3-5 part, tannic acid 7-10 part, pool Lip river
Husky nurse 4-7 part.
3. sustained-release polycarboxylic water reducer according to claim 2 is it is characterised in that by the following raw material according to weight portion
Composition：32 parts of polymethylacrylic acid, 17 parts of Halloysitum Rubrum, 4 parts of cumyl peroxide, 8 parts of tannic acid, 5 parts of poloxamer.
4. a kind of preparation method of described sustained-release polycarboxylic water reducer as arbitrary in claim 1-3 it is characterised in that by with
Lower step composition：
1）5 times of deionized water of poloxamer and its quality is mixed, prepared Poloxamer solution；By tannic acid and its quality 2
Ethanol mixing again, prepared tannic acid solution；
2）Halloysitum Rubrum is pulverized, cross 120 mesh sieves, add tannic acid solution, stir process 30-35min at a temperature of 68 DEG C, so
Add Poloxamer solution, stir process 30min at a temperature of 86 DEG C afterwards, add polymethylacrylic acid, in 72 DEG C of temperature
Lower supersound process 33min of degree, ultrasonic power is 900W, takes filtrate, is subsequently adding cumyl peroxide, at 65 DEG C after filtration
At a temperature of stir process 55min obtain final product water reducer.
5. application in concrete for the described polycarboxylate water-reducer as arbitrary in claim 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610891055.5A CN106431064A (en) | 2016-10-13 | 2016-10-13 | Slow-release polycarboxylate water reducer as well as preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610891055.5A CN106431064A (en) | 2016-10-13 | 2016-10-13 | Slow-release polycarboxylate water reducer as well as preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106431064A true CN106431064A (en) | 2017-02-22 |
Family
ID=58173589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610891055.5A Pending CN106431064A (en) | 2016-10-13 | 2016-10-13 | Slow-release polycarboxylate water reducer as well as preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106431064A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112661914A (en) * | 2021-01-15 | 2021-04-16 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Novel polycarboxylate superplasticizer special for machine-made sand and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0753488A2 (en) * | 1995-07-13 | 1997-01-15 | Nippon Shokubai Co., Ltd. | Cement dispersant, method for production thereof, and cement composition using the dispersant |
| CN101798197A (en) * | 2010-03-08 | 2010-08-11 | 南昌大学 | Controlled/slow release polycarboxylate water reducing agent for inhabiting aggregate mud content influence and preparation method thereof |
| CN102993385A (en) * | 2012-08-21 | 2013-03-27 | 江苏百瑞吉新材料有限公司 | Slow release polycarboxylate-type high-performance water reducer |
| CN103641959A (en) * | 2013-11-19 | 2014-03-19 | 江苏百瑞吉新材料有限公司 | Sustained-release polycarboxylic acid water reducer, and preparation method thereof |
| CN105800991A (en) * | 2016-03-29 | 2016-07-27 | 山东净金新能源有限公司 | Sustained-release polycarboxylate superplasticizer and preparation method and application thereof |
-
2016
- 2016-10-13 CN CN201610891055.5A patent/CN106431064A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0753488A2 (en) * | 1995-07-13 | 1997-01-15 | Nippon Shokubai Co., Ltd. | Cement dispersant, method for production thereof, and cement composition using the dispersant |
| CN101798197A (en) * | 2010-03-08 | 2010-08-11 | 南昌大学 | Controlled/slow release polycarboxylate water reducing agent for inhabiting aggregate mud content influence and preparation method thereof |
| CN102993385A (en) * | 2012-08-21 | 2013-03-27 | 江苏百瑞吉新材料有限公司 | Slow release polycarboxylate-type high-performance water reducer |
| CN103641959A (en) * | 2013-11-19 | 2014-03-19 | 江苏百瑞吉新材料有限公司 | Sustained-release polycarboxylic acid water reducer, and preparation method thereof |
| CN105800991A (en) * | 2016-03-29 | 2016-07-27 | 山东净金新能源有限公司 | Sustained-release polycarboxylate superplasticizer and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 高松: "《辽宁中药志.动物、矿物、海洋类》", 31 July 2015, 辽宁科学技术出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112661914A (en) * | 2021-01-15 | 2021-04-16 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Novel polycarboxylate superplasticizer special for machine-made sand and preparation method thereof |
| CN112661914B (en) * | 2021-01-15 | 2022-08-26 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Polycarboxylate superplasticizer special for machine-made sand and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105367720B (en) | A kind of diminishing collapse protective poly-carboxylic acid water reducing agent and preparation method thereof | |
| US10774000B2 (en) | Admixture and method for freeze-thaw damage resistance and scaling damage resistance of cementitious compositions | |
| CN104973817B (en) | A kind of concrete viscosity regulator being applicable to use with polycarboxylate water-reducer compatibility and preparation method thereof | |
| CN106279561B (en) | A kind of viscosity reduction type poly carboxylic acid series water reducer for high performance concrete | |
| CN103755895B (en) | Polycarboxylic acid high performance water reducing agent and preparation method thereof | |
| CN104496266B (en) | A kind of Concrete synergist and preparation method thereof | |
| CN108424030A (en) | A kind of collapse protection type Concrete strength agent and its preparation method and application | |
| CN102603223A (en) | Polycarboxylic acid water reducer with solid raw materials and preparing process of the polycarboxylic acid water reducer | |
| CN106045372B (en) | Special polycarboxylate water-reducer of concrete for mixing basalt mountain flour in concrete and preparation method thereof | |
| CN103613307B (en) | Slump type polycarboxylate superplasticizer and preparation method thereof | |
| CN109809739A (en) | A kind of function regulator and preparation method thereof for the compound fine aggregate of concrete | |
| CN108328959A (en) | A kind of three high mother liquor of polycarboxylic acids and its manufacturing method | |
| CN108070059B (en) | High-workability polycarboxylic acid water reducing agent, and preparation method and use method thereof | |
| CN106431064A (en) | Slow-release polycarboxylate water reducer as well as preparation method and application thereof | |
| CN109721271B (en) | Polycarboxylate water reducing agent composition for self-compacting high-workability concrete | |
| CN106336138A (en) | Foam control agent and air-entraining water reducing compounding agent and concrete prepared thereof | |
| CN105174795A (en) | Concrete slump retaining agent and preparation method thereof | |
| CN105778010A (en) | Polycarboxylate superplasticizer with high slump retaining property and preparing method thereof | |
| JP2007099561A (en) | Rheology modifier | |
| CN109485323A (en) | Early strong viscosity reduction type polycarboxylate water-reducer is preparing the purposes in prefabricated components concrete | |
| CN105384879A (en) | Slump retention agent and preparation method thereof | |
| CN104003644B (en) | The production technique of polycarboxylate water-reducer | |
| CN105271905A (en) | Slump retention agent and preparation method thereof | |
| CN106746852A (en) | A kind of polycarboxylate water-reducer and preparation method thereof | |
| CN109970924A (en) | A kind of room temperature synthesis composite functional polycarboxylate superplasticizer mother liquor and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |