CN110395934A - A kind of concrete shrinkage type water-reducing agent - Google Patents
A kind of concrete shrinkage type water-reducing agent Download PDFInfo
- Publication number
- CN110395934A CN110395934A CN201910638447.4A CN201910638447A CN110395934A CN 110395934 A CN110395934 A CN 110395934A CN 201910638447 A CN201910638447 A CN 201910638447A CN 110395934 A CN110395934 A CN 110395934A
- Authority
- CN
- China
- Prior art keywords
- reducing agent
- water
- type water
- shrinkage type
- concrete shrinkage
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of concrete shrinkage type water-reducing agents, it is related to cement water reducing agent technical field, including following raw material: polyethylene glycol polypropylene glycol monobutyl ether, maleic anhydride, methoxy poly (ethylene glycol), acrylic or methacrylic sodium sulfonate or both mixture, ammonium sulfate, phenthazine and the concentrated sulfuric acid.The present invention is by being provided with maleic anhydride, it is that relatively important Organic Chemicals is made in water-reducing agent, the sticky efficiency of mixture can effectively be improved, improve the hardness of concrete, have the advantages that effect of prestressed is good, it is reacted with acrylic acid etc. containing polymerizable double bond, synthesizing ester is to increase its reactivity, it is the principal monomer class raw material for preparing polycarboxylate high range water reducing agent for cement, sterling is the crystallization of colorless and transparent orthorhombic system, it is consolidated after moisture absorption blocking, can be improved mixture is made efficiency, by being provided with phenthazine, with water preventing ability, the impervious effect of concrete can effectively be improved.
Description
Technical field
The present invention relates to cement water reducing agent technical field, specially a kind of concrete shrinkage type water-reducing agent.
Background technique
Water-reducing agent is a kind of under conditions of maintaining concrete slump to be basically unchanged, and can be reduced the coagulation of mixing water amount
Native additive, belongs to anionic surfactant mostly, there is lignosulfonates and naphthalene sulphonate formaldehyde polymer etc., is added mixed
There is peptizaiton to cement granules after solidifying soil mixture, its workability can be improved, reduce unit consumption of water, improve concrete mixing
The mobility of object, or unit cement consumption is reduced, save cement.
For the water-reducing agent of concrete admixture, concrete can be effectively reduced after addition, water consumption is made, changed
The mobility of kind concrete mix, but can not effectively guarantee the crack resistance of concrete, cracking resistance is poor.
Summary of the invention
The object of the invention is in order to make up for the deficiencies of the prior art, provide a kind of concrete shrinkage type diminishing
Agent, it has the advantages that cracking resistance is good, solves the problems, such as that existing water-reducing agent effect of prestressed is poor.
The present invention is in order to solve the above technical problems, provide the following technical solutions: a kind of concrete shrinkage type water-reducing agent, packet
Include following raw material:
A polyethylene glycol polypropylene glycol monobutyl ether
B maleic anhydride
C methoxy poly (ethylene glycol)
D acrylic or methacrylic sodium sulfonate or both mixture
E ammonium sulfate
F phenthazine
The g concentrated sulfuric acid
The molar ratio of its raw material is a:b:c:d=1:0.1-1.3:0.06-0.09:3-4.
Further, f dosage is the 0.05-0.07% of total weight of material, and e dosage is the 0.06- of total weight of material
0.11%, g dosage are total weight of material 0.4-0.7%, preparation step are as follows:
A, b, c and d are sequentially placed into reaction kettle by S1, and stirring heating is uniformly mixed；
F and g are sequentially added after the completion of S2, S1, and continue to heat up, reacts, obtains esterification products；
After the completion of S3, S2, esterification products temperature is declined, and is diluted with water, and keep temperature；
Dropping material A is made in e by S4 into the water, is uniformly added dropwise to reaction kettle；
Continue to stir after the completion of S5, S4, with appropriate liquid alkaline neutralization reactant.
Further, the molar ratio a:b:c:d=1:0.1:0.06:3 of raw material.
By using above-mentioned technical proposal, effectively raw material can be matched, to guarantee the quality of synthetic.
Further, constantly by vacuumizing the moisture removed in reaction kettle in the step S1 reaction process.
By using above-mentioned technical proposal, the mobility of mixture can be effectively reduced, efficiency is made to improve.
Further, the step S2 is warming up to 110-120 DEG C, and the reaction time is 7-8 hours.
By using above-mentioned technical proposal, whole practical function is improved, is had the advantages that convenient for operation.
Further, the step S3 temperature drops to 55-65 DEG C, and the concentration of the step S4 dropping material A is 5-9%,
Divide 3-5 hours and adds.
By using above-mentioned technical proposal, further improve mixture is made efficiency, has convenient for the excellent of operation
Point.
Further, 1-2 hours a length of when the step S5 is stirred, neutralization reactant to PH is 5-8.
By using above-mentioned technical proposal, composite soil can be made to obtain effective neutralization reaction, improve the matter of mixture
Amount.
Compared with prior art, the concrete shrinkage type water-reducing agent have it is following the utility model has the advantages that
1, the present invention is that relatively important Organic Chemicals, energy is made in water-reducing agent by being provided with maleic anhydride
The enough effective sticky efficiency for improving mixture, improves the hardness of concrete, has the advantages that effect of prestressed is good, by being provided with
Methoxy poly (ethylene glycol) has good water solubility, wetability, lubricity and physiological inertia, non-stimulated to human body, mildly, with
Acrylic acid etc. is reacted containing polymerizable double bond, and synthesizing ester is to prepare polycarboxylate high-efficiency cement to subtract to increase its reactivity
The principal monomer class raw material of aqua.
2, the present invention is the crystallization of colorless and transparent orthorhombic system by being provided with ammonium sulfate, sterling, and aqueous solution is insoluble in acidity
In alcohol, acetone and ammonium hydroxide, there is hygroscopicity, consolidate blocking after moisture absorption, can be improved mixture is made efficiency, by being provided with pheno
Thiazine has water preventing ability, can effectively improve the impervious effect of concrete.
Specific embodiment
It is described in further detail below in conjunction with technical solution of the specific embodiment to this patent.
Embodiment one
A kind of concrete shrinkage type water-reducing agent, including following raw material:
A polyethylene glycol polypropylene glycol monobutyl ether
B maleic anhydride
C methoxy poly (ethylene glycol)
D acrylic or methacrylic sodium sulfonate or both mixture
E ammonium sulfate
F phenthazine
The g concentrated sulfuric acid
The molar ratio of its raw material is a:b:c:d=1:0.1-1.3:0.06-0.09:3-4, and f dosage is total weight of material
0.05-0.07%, e dosage are the 0.06-0.11% of total weight of material, and g dosage is total weight of material 0.4-0.7%, preparation
Step are as follows:
A, b, c and d are sequentially placed into reaction kettle by S1, and stirring heating is uniformly mixed, constantly passes through during the reaction
Vacuumize the moisture removed in reaction kettle；
F and g are sequentially added after the completion of S2, S1, and are continuously heating to 110 DEG C, the reaction time is 7 hours, is esterified
Product；
After the completion of S3, S2, esterification products temperature is dropped to 55 DEG C, and be diluted with water, and keep temperature；
Dropping material A is made in e by S4 into the water, and material A concentration is 5%, is uniformly added dropwise to reaction kettle, is divided 3 hours and add；
Continue stirring 1 hour after the completion of S5, S4, is 5-6 with appropriate liquid alkaline neutralization reactant to PH.
Embodiment two
A kind of concrete shrinkage type water-reducing agent, including following raw material:
A polyethylene glycol polypropylene glycol monobutyl ether
B maleic anhydride
C methoxy poly (ethylene glycol)
D acrylic or methacrylic sodium sulfonate or both mixture
E ammonium sulfate
F phenthazine
The g concentrated sulfuric acid
The molar ratio of its raw material is a:b:c:d=1:0.1-1.3:0.06-0.09:3-4, and f dosage is total weight of material
0.05-0.07%, e dosage are the 0.06-0.11% of total weight of material, and g dosage is total weight of material 0.4-0.7%, preparation
Step are as follows:
A, b, c and d are sequentially placed into reaction kettle by S1, and stirring heating is uniformly mixed, constantly passes through during the reaction
Vacuumize the moisture removed in reaction kettle；
F and g are sequentially added after the completion of S2, S1, and are continuously heating to 115 DEG C, the reaction time is 7.5 hours, obtains ester
Change product；
After the completion of S3, S2, esterification products temperature is dropped to 60 DEG C, and be diluted with water, and keep temperature；
Dropping material A is made in e by S4 into the water, and material A concentration is 7%, is uniformly added dropwise to reaction kettle, is divided 4 hours and add；
Continue stirring 1.5 hours after the completion of S5, S4, is 6-7 with appropriate liquid alkaline neutralization reactant to PH.
Embodiment three.
A kind of concrete shrinkage type water-reducing agent, including following raw material:
A polyethylene glycol polypropylene glycol monobutyl ether
B maleic anhydride
C methoxy poly (ethylene glycol)
D acrylic or methacrylic sodium sulfonate or both mixture
E ammonium sulfate
F phenthazine
The g concentrated sulfuric acid
The molar ratio of its raw material is a:b:c:d=1:0.1-1.3:0.06-0.09:3-4, and f dosage is total weight of material
0.05-0.07%, e dosage are the 0.06-0.11% of total weight of material, and g dosage is total weight of material 0.4-0.7%, preparation
Step are as follows:
A, b, c and d are sequentially placed into reaction kettle by S1, and stirring heating is uniformly mixed, constantly passes through during the reaction
Vacuumize the moisture removed in reaction kettle；
F and g are sequentially added after the completion of S2, S1, and are continuously heating to 120 DEG C, the reaction time is 8 hours, is esterified
Product；
After the completion of S3, S2, esterification products temperature is dropped to 65 DEG C, and be diluted with water, and keep temperature；
Dropping material A is made in e by S4 into the water, and material A concentration is 9%, is uniformly added dropwise to reaction kettle, is divided 5 hours and add；
Continue stirring 2 hours after the completion of S5, S4, is 7-8 with appropriate liquid alkaline neutralization reactant to PH.
The prior art
A kind of concrete shrinkage type water-reducing agent, including following raw material:
A polyethylene glycol polypropylene glycol monobutyl ether
B methoxy poly (ethylene glycol)
C acrylic or methacrylic sodium sulfonate or both mixture
D ammonium sulfate
The e concentrated sulfuric acid
The molar ratio of its raw material is a:b:c=1:0.04-0.05:1-3, and d dosage is the 0.03- of total weight of material
0.05%, e dosage are total weight of material 0.4-0.7%, preparation step are as follows:
A, b and c are sequentially placed into reaction kettle by S1, and stirring heating is uniformly mixed；
D is sequentially added after the completion of S2, S1, and is continuously heating to 70 DEG C, the reaction time is 5 hours, obtains esterification products；
After the completion of S3, S2, esterification products temperature is dropped to 45 DEG C, and be diluted with water, and keep temperature；
Dropping material A is made in e by S4 into the water, and concentration 2% is uniformly added dropwise to reaction kettle, is divided 2 hours and is added；
Continue stirring 0.5 hour after the completion of S5, S4, is 4-5 with appropriate liquid alkaline neutralization reactant to PH.
| Volume % | Decrement ratio % | Breaking resistance Mpa | Seepage-resistant grade | |
| Embodiment one | 0.65 | 95 | 30.7 | P10 |
| Embodiment two | 0.7 | 93 | 36.3 | P10 |
| Embodiment three | 0.75 | 92 | 36.8 | P10 |
| The prior art | 0.5 | 110 | 23.2 | P7 |
Water-reducing agent in the prior art, effect of prestressed and impervious effect are all poor, thus be easy to influence construction quality, and
The water-reducing agent is that relatively important Organic Chemicals is made in water-reducing agent by being provided with maleic anhydride, can be effective
The sticky efficiency for improving mixture, improves the hardness of concrete, has the advantages that effect of prestressed is good, poly- by being provided with methoxyl group
Ethylene glycol has good water solubility, wetability, lubricity and physiological inertia, non-stimulated to human body, mildly, with acrylic acid etc.
It is reacted containing polymerizable double bond, synthesizing ester is the master for preparing polycarboxylate high range water reducing agent for cement to increase its reactivity
Monomer class raw material are wanted, by being provided with ammonium sulfate, sterling is the crystallization of colorless and transparent orthorhombic system, and aqueous solution is insoluble in acidity
In alcohol, acetone and ammonium hydroxide, there is hygroscopicity, consolidate blocking after moisture absorption, can be improved mixture is made efficiency, by being provided with pheno
Thiazine has water preventing ability, can effectively improve the impervious effect of concrete, can effectively improve the effect of prestressed of concrete
And impervious effect.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of concrete shrinkage type water-reducing agent, it is characterised in that: including following raw material:
A polyethylene glycol polypropylene glycol monobutyl ether
B maleic anhydride
C methoxy poly (ethylene glycol)
D acrylic or methacrylic sodium sulfonate or both mixture
E ammonium sulfate
F phenthazine
The g concentrated sulfuric acid
The molar ratio of its raw material is a:b:c:d=1:0.1-1.3:0.06-0.09:3-4.
2. a kind of concrete shrinkage type water-reducing agent according to claim 1, it is characterised in that: f dosage is total material weight
The 0.05-0.07% of amount, e dosage are the 0.06-0.11% of total weight of material, and g dosage is total weight of material 0.4-0.7%.
3. a kind of preparation method of concrete shrinkage type water-reducing agent according to claim 1, it is characterised in that: it is prepared
Step are as follows:
A, b, c and d are sequentially placed into reaction kettle by S1, and stirring heating is uniformly mixed；
F and g are sequentially added after the completion of S2, S1, and continue to heat up, reacts, obtains esterification products；
After the completion of S3, S2, esterification products temperature is declined, and is diluted with water, and keep temperature；
Dropping material A is made in e by S4 into the water, is uniformly added dropwise to reaction kettle；
Continue to stir after the completion of S5, S4, with appropriate liquid alkaline neutralization reactant.
4. a kind of preparation method of concrete shrinkage type water-reducing agent according to claim 3, it is characterised in that: raw material
Molar ratio a:b:c:d=1:0.1:0.06:3.
5. a kind of preparation method of concrete shrinkage type water-reducing agent according to claim 3, it is characterised in that: the step
Constantly by vacuumizing the moisture removed in reaction kettle in rapid S1 reaction process.
6. a kind of preparation method of concrete shrinkage type water-reducing agent according to claim 3, it is characterised in that: the step
Rapid S2 is warming up to 110-120 DEG C, and the reaction time is 7-8 hours.
7. a kind of preparation method of concrete shrinkage type water-reducing agent according to claim 3, it is characterised in that: the step
Rapid S3 temperature drops to 55-65 DEG C, and the concentration of the step S4 dropping material A is 5-9%, divides 3-5 hours.
8. a kind of preparation method of concrete shrinkage type water-reducing agent according to claim 3, it is characterised in that: the step
1-2 hours a length of when rapid S5 stirring, neutralization reactant to PH is 5-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910638447.4A CN110395934A (en) | 2019-07-16 | 2019-07-16 | A kind of concrete shrinkage type water-reducing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910638447.4A CN110395934A (en) | 2019-07-16 | 2019-07-16 | A kind of concrete shrinkage type water-reducing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110395934A true CN110395934A (en) | 2019-11-01 |
Family
ID=68325591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910638447.4A Pending CN110395934A (en) | 2019-07-16 | 2019-07-16 | A kind of concrete shrinkage type water-reducing agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110395934A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112830704A (en) * | 2021-01-07 | 2021-05-25 | 中建西部建设建材科学研究院有限公司 | Shrinkage reducing agent for ultrahigh-performance concrete and preparation method thereof |
| CN113636793A (en) * | 2021-08-10 | 2021-11-12 | 成都精准混凝土有限公司 | Recycled concrete and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103333297A (en) * | 2013-06-24 | 2013-10-02 | 北京工业大学 | Preparation method of reduced polycarboxylate-type high-performance water reducing agent |
| CN103724567A (en) * | 2013-12-31 | 2014-04-16 | 大连市铭源全科技开发有限公司 | Reduced water reducing agent and synthesis method thereof |
| WO2018147378A1 (en) * | 2017-02-08 | 2018-08-16 | シーカ・テクノロジー・アーゲー | Hydraulic composition admixture |
-
2019
- 2019-07-16 CN CN201910638447.4A patent/CN110395934A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103333297A (en) * | 2013-06-24 | 2013-10-02 | 北京工业大学 | Preparation method of reduced polycarboxylate-type high-performance water reducing agent |
| CN103724567A (en) * | 2013-12-31 | 2014-04-16 | 大连市铭源全科技开发有限公司 | Reduced water reducing agent and synthesis method thereof |
| WO2018147378A1 (en) * | 2017-02-08 | 2018-08-16 | シーカ・テクノロジー・アーゲー | Hydraulic composition admixture |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112830704A (en) * | 2021-01-07 | 2021-05-25 | 中建西部建设建材科学研究院有限公司 | Shrinkage reducing agent for ultrahigh-performance concrete and preparation method thereof |
| CN113636793A (en) * | 2021-08-10 | 2021-11-12 | 成都精准混凝土有限公司 | Recycled concrete and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102358763B (en) | Method for preparing additive for inhibiting side effect of clay | |
| CN1330600C (en) | Maleic acid anhydride series concrete water-reducing agent and preparation process thereof | |
| CN101508536B (en) | modified aliphatic water reducing agent and preparation method | |
| CN101497507A (en) | High-early strength antifreezing polycarboxylate high performance water reducing agent and preparation | |
| CN102993432A (en) | Water reducer midbody, preparation method thereof and water reducer prepared by using preparation method | |
| CN103396031B (en) | A kind of carboxylic acid water reducer and preparation method thereof | |
| CN101798198A (en) | Polycarboxylic acid cement activation reinforced grinding aid and preparation method thereof | |
| CN109721690A (en) | A kind of viscosity reduction type polycarboxylic acids high efficiency solid water-reducing agent and its preparation and application | |
| CN106432661B (en) | A kind of modified naphthalene series water-reducing agent and preparation method thereof | |
| CN110395934A (en) | A kind of concrete shrinkage type water-reducing agent | |
| CN106749965A (en) | A kind of preparation method of solid polycarboxylic acid water reducing agent | |
| CN107686540A (en) | A kind of preparation method of Early-strength polycarboxylate superplasticizer | |
| CN106632881A (en) | Low water-reducing and high slump loss resistant type polycarboxylate superplasticizer master batch | |
| CN106632930A (en) | Modified polycondensation type water reducing agent, and preparation method and application thereof | |
| CN103964731A (en) | Polycarboxylic acid water reducer and preparation method thereof | |
| CN102718427B (en) | Sulfonyl modified carboxylic acid water-reducing agent and preparation method thereof | |
| CN102503221B (en) | Cyclohexanol grafted polycarboxylic acid water reducing agent and preparation method thereof | |
| CN101905960B (en) | Double long branch-chain polycarboxylic acid water reducing agent and preparation process thereof | |
| CN102807653A (en) | Co-polycarboxylic acid high efficiency water reducer capable of compounding with naphthalene formaldehyde water reducer and method for preparing same | |
| CN101239794B (en) | Tackifier of cement-base material and its preparation method and application | |
| CN106916292A (en) | A kind of polyoxyalkyl ether and preparation method thereof, the polycarboxylate water-reducer as obtained by it and preparation method | |
| CN109503774B (en) | A kind of polycarboxylate water-reducer that temperature sensitivity is small | |
| CN101993214B (en) | Polycarboxylic acid water reducing agent using diallyl polyethylene glycol (DAPEG) as raw material and preparation method thereof | |
| CN109912752A (en) | A kind of water-reducing agent and preparation method thereof | |
| CN102206058B (en) | Ultra-high efficiency polycarboxylate water reducer and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for 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: 20191101 |