CN106673480B - A kind of guarantor's modeling stabilizer for cement-based gelling material - Google Patents
A kind of guarantor's modeling stabilizer for cement-based gelling material Download PDFInfo
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- CN106673480B CN106673480B CN201611107111.8A CN201611107111A CN106673480B CN 106673480 B CN106673480 B CN 106673480B CN 201611107111 A CN201611107111 A CN 201611107111A CN 106673480 B CN106673480 B CN 106673480B
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- stabilizer
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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
- 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
Abstract
The present invention provides a kind of guarantors for cement-based gelling material to mould stabilizer.Guarantor's modeling stabilizer is the aqueous solution that solid liquid/solid consolidates composition, Gu it is 100 parts that liquid/solid, which consolidates composition gross mass, the solid liquid/solid consolidates the raw material that composition contains following weight parts component: plastic expansion agent: 5-15 parts；Foam stabilizer: 10-25 parts；Soaps air entraining agent: 5-10 parts；Metal soap lubricant: 35-40 parts: degree of plasticification SD poising agent: 35-45 parts.The volume that modeling stabilizer is protected in cement base gelling material is account for cementitious material quality summation 0.1 ~ 0.3%.The guarantor moulds in the component design of stabilizer and adjusts degree of plasticification SD value using degree of plasticification SD poising agent, solves influence of the over cure to cement-based gelling material mixture mobility and slump retaining from source；And it is different from through addition retarder and water-reducing agent solution, the defects of preventing additive excessively leads to mixture isolation bleeding or too long retarding time.
Description
Technical field:
The present invention relates to the field of building materials, and in particular to moulds and stablizes to a kind of guarantor for cement-based gelling material
Agent.
Background technique:
In recent years, the commercialization of chinese concrete, the production of premixing metaplasia achieve swift and violent development.With regard to current concrete
For technology and market situation, many challenges are still faced: if concrete needs higher mobility, to meet complex building knot
The construction requirements of structure；Excellent stability and pumping, to accelerate engineering construction speed；High-durability, to extend building knot
The service life of structure；The extensive adaptability of raw material is to reduce concrete production quality control pressure；Pollution is reduced, with
Meet more stringent environmental requirement；Product homogeneity low-price competition cannot achieve the market orientation of differentiation；Concrete
Production and application enterprise management level are irregular, and quality problems take place frequently, and construction quality has very big potential risk, etc..
Currently, SO in over cure cement3Too high levels, C3A aquation forms excessive calcium sulphoaluminate acicular crystal, makes cement
Volume expansion, stability is bad, initial flow easily occurs and spends the anti-state that do not show completely greatly or initially of small later period；Owe sulphur
Change SO in cement3Content is insufficient, and hydrated cementitious is too fast, occurs dodging coagulation phenomena, even if several times even tens times of addition retarder
Also it can't resolve the too fast problem of its slump operational losses.The adaptability problem of additive and cement seems for construction quality
It is more prominent, it is simple to adapt to some special cement by the formula for adjusting additive, it is technically difficult to realize.Both at home and abroad
The conceptual issues of " two-way adaptation " are proposed thus.That is additive is not required nothing more than and adapts to cement, while requiring cement logical yet
It crosses and adjusts its clinker mineral composition, fineness and grain composition etc. to adapt to additive, make cement and admixture two-way adaptation.
Degree of plasticification SD=SO3/(1.29Na2O+0.85K2O), for SD value between 0.4-2.0,1 or so is best.Owe/over cure
In terms of being concentrated mainly on cement, influence factor specifically includes that cement minerals composition, species of gypsum and volume, alkali content, free oxygen
Change calcium content, mixing material type and volume, fineness and particle composition, time (freshness) and temperature is made etc..But it is single
Requirement cement adapt to water-reducing agent be improper.
Domestic and foreign scholars have carried out a large amount of fruitful research with regard to protecting modeling stabilizer invention, but due to actually being mixed
The limitation for coagulating the factors such as autochthonal production raw material quality, production planning and control level, additive sensibility, protects modeling stabilizer
Application never realize be widely popularized.If 104177556 A of patent CN discloses steady modeling agent of one kind and preparation method thereof,
Specific formula are as follows: carried out copolyreaction in the presence of initiator by four constituent monomers and obtained, wherein component A is alkenyl polyether propylene
Acid esters, component B are alkenyl polyethers, and component C is in methacrylic acid, acrylic acid, maleic acid, maleic anhydride and its corresponding salt
One or two kinds of mixtures；One of component D acrylamide, Methacrylamide, N hydroxymethyl acrylamide；Component A
Quality account for the 1-10% of monomer；Copolyreaction temperature is 60-95 DEG C, and time 4-8 hour: being caused using redox system,
The gross mass of initiator is the 0.1-8% of monomer gross mass；After the completion of copolyreaction, it is added in sodium hydroxide into copolymerization product
With adjusting pH value to 7-8.
104592445 A of patent CN discloses a kind of organic phosphonate concrete plasticity-maintaining agent and preparation method thereof, and formula is adopted
With sodium hypophosphite 12-20%, styrene 3-8%, unsaturated dicarboxylic acid 12-18%, (methyl) acrylic acid hydroxy alkyl ester 18-26 %
With 2- acrylamide-2-methyl propane sulfonic (AMPS) 28-45% as synthon, aqueous solution is carried out under initiator effect and is gathered
It closes, synthesizes a kind of organic phospho acid salt copolymer.
102584074 A of patent CN discloses the high-strength high guarantor's plastic concrete plasticity-maintaining agent of one kind and its application method, guarantor modeling
Agent is by 1-5 parts of boric acid, 7-15 parts of lactone, 10-30 parts of rock sugar, 7-15 parts of honey, 2-6 parts of ethyl acetate and ferrous sulfate 1-6
Plasticity-maintaining agent made of part compounding.The plasticity-maintaining agent has high-intensitive, high guarantor's plasticity, is especially suited for application in high-strength concrete, commodity
In concrete and pump concrete.
The application, which attempts to mix thinking again by mixing component outside, improves the adaptability of water-reducing agent and deficient over cure cement.
Summary of the invention:
It is an object of that present invention to provide a kind of guarantors for cement-based gelling material to mould stabilizer.In view of this, of the invention
Technical problems to be solved, which are to provide a kind of guarantor, moulds stabiliser compositions and is used to assist single conventional polycarboxylate water-reducer group
Divide the application status that can not solve normal flow and slump retaining using the mixture of deficient/over cure cement, constructs to be plasticized
It spends SD poising agent and lubricates the polynary effect component of bleed foam stabilizing, be the difficult point and key point for protecting modeling stabilizer design.
To achieve the above object, the technical solution of the present invention is as follows:
A kind of guarantor for cement-based gelling material moulds stabilizer, it is characterised in that: the guarantor mould stabilizer be solid-liquid/
Gu admittedly the aqueous solution of composition, Gu it is 100 parts that liquid/solid, which consolidates composition gross mass, the solid liquid/solid consolidate composition contain it is following heavy
Measure the raw material of part component:
Plastic expansion agent: 5-15 parts；Foam stabilizer: 10-25 parts；Soaps air entraining agent: 5-10 parts；
Metal soap lubricant: 35-40 parts: degree of plasticification SD poising agent: 35-45 parts.
The plastic expansion agent be azodicarbonamide, diisopropyl azodiformate, diethyl azodiformate, N,
N '-dinitrosopentamethlyene tetramine, N, one of N '-dimethyl-N, N '-dinitrosoterephthalamine or any several
Kind composition；The plastic expansion agent is preferably azodicarbonamide, N, one of N '-dinitrosopentamethlyene tetramine or
Two kinds of compositions.
The foam stabilizer is dodecyldimethylamine oxide, alkylolamides, fatty acid amide, fatty acid ethanolamide acyl
One of amine, N- alkyl imido-acetic acid sodium salt, alkyl betaine sulfonic acid or any several compositions.
The soaps air entraining agent is the combination of one or both of triterpenoid saponin, enuatrol.
The metal soap lubricant is calcium stearate, magnesium stearate, zinc stearate, barium stearate, lead stearate, hard
One of resin acid aluminium or any several compositions, preferably metal ion are to aquation without being obviously promoted or the object of deferred action
One or more of matter, i.e. calcium stearate, barium stearate, lead stearate composition.
The degree of plasticification SD poising agent is two classes, and one is sulfate radical poising agent, secondly being sodium potassium ion poising agent；Make
Judged with standard according to degree of plasticification SD value in cement-based gelling material mix objects system: SD value is less than normal, then selects sulfate radical
Poising agent；SD value is bigger than normal, then selects sodium potassium ion poising agent, the sulfate radical poising agent be calcium sulphate dihydrate, half-H 2 O calcium sulphate,
One of urea, ammonium acetate, formamide, N- methyl nitrosourea or any several compositions；The sodium potassium ion poising agent is nitre
One of sour calcium, barium nitrate, calcium oxalate, calcium acetate or any several compositions.
A kind of guarantor's modeling stabilizer for cement-based gelling material, it is characterised in that: it is solid-liquid that the guarantor, which moulds stabilizer,
Composition or solid solid mixture preferably consolidate powder mixture；It is described to protect modeling stabilizer mixing in cement base gelling material
Amount is to account for the 0.1 ~ 0.3% of cementitious material quality summation.
The positive effect of the present invention is
1, the guarantor moulds in the component design of stabilizer and adjusts degree of plasticification SD value using degree of plasticification SD poising agent, solves from source
It has determined influence of the over cure to cement-based gelling material mixture mobility and slump retaining；
2, the guarantor moulds stabilizer and is different from through addition retarder and water-reducing agent solution, and preventing additive excessively causes
Mixture isolates the defects of bleeding or too long retarding time；
3, the plastic expansion agent in guarantor modeling stabilizer, the compound matching of soaps air entraining agent, foam stabilizer use, ball effect
Mobility should be improved, the formation of gas wall absorbs a part of Free water, and helpful to water-retaining property, property stomata in isotropic stable ensures to mix
Close the plastic phase that microdilatancy is in the object long period；
4 and protect metal soap lubricant used in modeling stabilizer and as lubricant medium be attached to irregular cement base
Gelling material particles surface, auxiliary water-reducing agent provide mobility effect.
Specific embodiment
Clear, complete description further is carried out to technical solution of the present invention below with reference to embodiment.
Embodiment 1:
Azodicarbonamide, specific dosage are as follows: azodicarbonamide: 5 parts are selected in plastic expansion agent；
Foam stabilizer selects dodecyldimethylamine oxide and alkyl betaine sulfonic acid, specific dosage are as follows: dodecyl two
Methyl oxidation amine: 10 parts, alkyl betaine sulfonic acid: 5 parts；
Soaps air entraining agent selects triterpenoid saponin, specific dosage are as follows: triterpenoid saponin: 5 parts；
Metal soap lubricant selects barium stearate and lead stearate, specific dosage are as follows: barium stearate: 20 parts；Stearic acid
Lead: 15 parts；
It is measured according to SD value in cement base gelling system, SD value is bigger than normal, therefore selects sulfate radical poising agent；
Degree of plasticification SD poising agent selects calcium sulphate dihydrate and half-H 2 O calcium sulphate, specific dosage are as follows: calcium sulphate dihydrate: 25 parts,
Half-H 2 O calcium sulphate: 15 parts.
Guarantor's modeling stabilizer is configured according to the above ratio, and it is 0.1% which, which moulds stabilizer volume,.
Embodiment 2
N, N '-dinitrosopentamethlyene tetramine, specific dosage are as follows: N, N '-dinitroso five times are selected in plastic expansion agent
Tetramine: 10 parts；
Foam stabilizer selected fatty acid glycollic amide, specific dosage are as follows: fatty acid ethanol amide: 10 parts；
Soaps air entraining agent selects enuatrol, specific dosage are as follows: enuatrol: 10 parts；
Metal soap lubricant selects calcium stearate, specific dosage are as follows: calcium stearate: 35 parts.
It is measured according to SD value in cement base gelling system, SD value is less than normal, therefore selects sodium potassium ion poising agent；
Degree of plasticification SD poising agent selects calcium nitrate, specific dosage are as follows: calcium nitrate: 35 parts.
Guarantor's modeling stabilizer is configured according to the above ratio, and it is 0.2% which, which moulds stabilizer volume,.
Embodiment 3
Diisopropyl azodiformate and N, N '-dimethyl-N, N '-dinitroso paraphenylene terephthalamide are selected in plastic expansion agent
Amine, specific dosage are as follows: diisopropyl azodiformate: 10 parts, N, N '-dimethyl-N, N '-dinitrosoterephthalamine: 5
Part；
Foam stabilizer selects N- alkyl imido-acetic acid sodium salt, specific dosage are as follows: N- alkyl imido-acetic acid sodium salt: 10 parts；
Soaps air entraining agent selects triterpenoid saponin and enuatrol, specific dosage are as follows: triterpenoid saponin: 2.5 parts, enuatrol: 2.5
Part；
Metal soap lubricant selects barium stearate, specific dosage are as follows: barium stearate: 35 parts.
It is measured according to SD value in cement base gelling system, SD value is less than normal, therefore selects sodium potassium ion poising agent；
Degree of plasticification SD poising agent selects calcium oxalate and calcium acetate, specific dosage are as follows: calcium oxalate: 15 parts, calcium acetate: 20 parts.
Guarantor's modeling stabilizer is configured according to the above ratio, and it is 0.3% which, which moulds stabilizer volume,.
Embodiment 4
Diisopropyl azodiformate and N, N '-dimethyl-N, N '-dinitroso paraphenylene terephthalamide are selected in plastic expansion agent
Amine, specific dosage are as follows: diisopropyl azodiformate: 10 parts, N, N '-dimethyl-N, N '-dinitrosoterephthalamine: 5
Part；
Foam stabilizer selects N- alkyl imido-acetic acid sodium salt, specific dosage are as follows: N- alkyl imido-acetic acid sodium salt: 25 parts；
Soaps air entraining agent selects triterpenoid saponin and enuatrol, specific dosage are as follows: triterpenoid saponin: 2.5 parts, enuatrol: 2.5
Part；
Metal soap lubricant selects barium stearate, specific dosage are as follows: barium stearate: 40 parts.
It is measured according to SD value in cement base gelling system, SD value is bigger than normal, therefore selects sulfate radical poising agent；
Degree of plasticification SD poising agent selects half-H 2 O calcium sulphate and urea, specific dosage are as follows: half-H 2 O calcium sulphate: 20 parts, urea: 25
Part.
Guarantor's modeling stabilizer is configured according to the above ratio, and it is 0.3% which, which moulds stabilizer volume,.
Example detection result
Test examples detailed above moulds stabilizer and common polycarboxylate superplasticizer mother liquor using the guarantor of cement-based gelling material respectively
It is compounded, investigates concrete initial slump/divergence under the common compounding small powder sodium gluconate using same dosage
With through when the slump/divergence.Test blue 42.5 water in capital that cement used is undervulcanization 42.5 cement of Ge Zhou Ba and over cure
Mud, example Isosorbide-5-Nitrae using sulfate radical poising agent；Example 2,3 using sodium potassium ion poising agent；Using undervulcanization
The common compounding small powder of 42.5 cement of Ge Zhou Ba comparison and the difference of example Isosorbide-5-Nitrae function and effect, using blue 42.5 cement in the capital of over cure
The common compounding small powder of comparison and the difference of example Isosorbide-5-Nitrae function and effect, with reference to GB/8076-2008 " concrete admixture " testing standard.
Different plasticity-maintaining agents and sodium gluconate influence Ge Zhou Ba cement concrete mobility
| Water-reducing agent type | Initial slump/divergence mm | Through when the slump/divergence mm |
| Ordinary water-reducing agent+sodium gluconate | 190/570 | 165/475 |
| Ordinary water-reducing agent+embodiment 1 | 200/560 | 185/525 |
| Ordinary water-reducing agent+embodiment 4 | 210/575 | 190/545 |
Different plasticity-maintaining agents and sodium gluconate influence capital orchid cement concrete mobility
| Water-reducing agent type | Initial slump/divergence mm | Through when the slump/divergence mm |
| Ordinary water-reducing agent+sodium gluconate | 185/510 | 155/420 |
| Ordinary water-reducing agent+embodiment 2 | 190/560 | 170/480 |
| Ordinary water-reducing agent+embodiment 3 | 195/555 | 180/495 |
According to above-mentioned concrete it is initial and through when mobility compare, for undervulcanization or over cure cement, the type cement
Accelerate the case where being unable to control using rear initial fluidity difference or loss, common small powder not can solve initial fluidity or mobility
Retentivity problem, example 1,2,3,4 are directed to different cement, targetedly choose degree of plasticification SD poising agent, match compositional system
Middle other types mechanism of action small powder, it can be ensured that concrete flowability is able to satisfy in working performance demand.
All features disclosed in this specification or disclosed all formulas and volume, in addition to mutually exclusive feature and/
Or it other than formula, volume, can combine in any way.It is any disclosed in this specification (including claim, abstract)
Feature can be replaced by other alternative features that are equivalent or have similar purpose unless specifically stated.It removes and non-specifically chats
It states, each feature is an example in a series of equivalent or similar characteristics.
Described above is only the non-limiting embodiment of invention, a large amount of embodiment can also be derived, for this field
Those of ordinary skill for, not departing from the invention design and under the premise of do not make creative work, can also do
The embodiment of several modifications and improvements out, these are all within the scope of protection of the present invention.
Claims (6)
1. a kind of guarantor for cement-based gelling material moulds stabilizer, it is characterised in that: it is solid liquid/solid that the guarantor, which moulds stabilizer,
Gu the aqueous solution of composition, Gu it is 100 parts that liquid/solid, which consolidates composition gross mass, the solid liquid/solid consolidates composition and contains following weight
The raw material of part component:
Plastic expansion agent: 5-15 parts；Foam stabilizer: 10-25 parts；
Soaps air entraining agent: 5-10 parts；Metal soap lubricant: 35-40 parts；
Sulfate radical or sodium potassium ion degree of plasticification SD poising agent: 35-45 parts；
Wherein the degree of plasticification SD poising agent is two classes, and one is sulfate radical poising agent, secondly being sodium potassium ion poising agent；Make
Judged with standard according to degree of plasticification SD value in cement-based gelling material mix objects system: SD value is less than normal, then selects sulfate radical
Poising agent；SD value is bigger than normal, then selects sodium potassium ion poising agent, the sulfate radical poising agent be calcium sulphate dihydrate, half-H 2 O calcium sulphate,
One of urea, ammonium acetate, formamide, N- methyl nitrosourea or any several compositions；The sodium potassium ion poising agent is nitre
One of sour calcium, barium nitrate, calcium oxalate, calcium acetate or any several compositions.
2. the guarantor according to claim 1 for cement-based gelling material moulds stabilizer, it is characterised in that: the plasticity
Swelling agent is azodicarbonamide, diisopropyl azodiformate, diethyl azodiformate, N, five first of N '-dinitroso
Urotropine, N, one of N '-dimethyl-N, N '-dinitrosoterephthalamine or any several compositions.
3. the guarantor according to claim 1 for cement-based gelling material moulds stabilizer, it is characterised in that: the foam stabilizing
Agent is dodecyldimethylamine oxide, alkylolamides, fatty acid amide, fatty acid ethanol amide, N- alkyl imido-acetic acid
One of sodium salt, alkyl betaine sulfonic acid or any several compositions.
4. the guarantor according to claim 1 for cement-based gelling material moulds stabilizer, it is characterised in that: the soaps
Air entraining agent is the combination of one or both of triterpenoid saponin, enuatrol.
5. the guarantor according to claim 1 for cement-based gelling material moulds stabilizer, it is characterised in that: the metal
Soaps lubricant be metal ion to aquation without being obviously promoted or the substance of deferred action, i.e. calcium stearate, magnesium stearate, tristearin
One of sour zinc, barium stearate, lead stearate, aluminum stearate or any several compositions.
6. a kind of guarantor according to claim 1 for cement-based gelling material moulds stabilizer, it is characterised in that: described
Protecting modeling stabilizer is solid-liquid combination object or solid solid mixture, wherein solid mixture is to consolidate powder mixture admittedly；Guarantor's modeling
Volume of the stabilizer in cement base gelling material is the 0.1-0.3% for accounting for cementitious material quality summation.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446084A (en) * | 2014-11-27 | 2015-03-25 | 湖北工业大学 | Water-soluble coagulant for cement-based cementing material and preparation method of water-soluble coagulant |
| CN104724968A (en) * | 2013-09-11 | 2015-06-24 | 武汉格瑞林建材科技股份有限公司 | Plastic expanding agent for settlement resistance of high flow state cement based cementing material and preparation method thereof |
| CN105271919A (en) * | 2015-11-06 | 2016-01-27 | 湖北工业大学 | Slow-release plastic expanding agent for cement-based binding material and preparation method of slow-release plastic expanding agent |
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| FR2774681B1 (en) * | 1998-02-11 | 2000-04-07 | Roquette Freres | ADDITIVES FOR MINERAL BINDERS, BASED ON HYDROGEN DISACCHARIDE, ADJUSTABLE MINERAL BINDERS AND PROCESS FOR PREPARING THEM |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104724968A (en) * | 2013-09-11 | 2015-06-24 | 武汉格瑞林建材科技股份有限公司 | Plastic expanding agent for settlement resistance of high flow state cement based cementing material and preparation method thereof |
| CN104446084A (en) * | 2014-11-27 | 2015-03-25 | 湖北工业大学 | Water-soluble coagulant for cement-based cementing material and preparation method of water-soluble coagulant |
| CN105271919A (en) * | 2015-11-06 | 2016-01-27 | 湖北工业大学 | Slow-release plastic expanding agent for cement-based binding material and preparation method of slow-release plastic expanding agent |
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