CN108675744A - A kind of cement composition and preparation method thereof - Google Patents
A kind of cement composition and preparation method thereof Download PDFInfo
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- CN108675744A CN108675744A CN201810651881.1A CN201810651881A CN108675744A CN 108675744 A CN108675744 A CN 108675744A CN 201810651881 A CN201810651881 A CN 201810651881A CN 108675744 A CN108675744 A CN 108675744A
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- cement
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of cement composition and preparation method thereof, its composition and parts by weight of the cement composition are：30 40 parts of cement, 45 55 parts of sand, 0.08 0.1 parts of the mixed mortar material of methoxyl group (polyethylene glycol) methacrylate copolymer (polycarboxylic-acid powdered water-reducing agent 1), 15 20 parts of water；0.08 0.9 parts of water-retaining agent, 1 1.5 parts of carbon-based powder, 0.15 0.25 parts of antifoaming agent, 0.3 0.9 parts of gypsum, its cement composition has sufficiently high adhesion strength, it disclosure satisfy that seismic safety standard, have Large strain horizontal, there is high compressive strength, with high bending strength and high trace performance, it is not easy expansion or shrinkage, is not easy to deteriorate over time, and be not easy by cracks influence.
Description
Technical field
The present invention relates to building material technical fields more particularly to a kind of cement composition and preparation method thereof.
Background technology
Currently, cement mortar and resin mortar are referred to as cement composition, for such as concrete surface joint filler and
Finishing material.Cement mortar is the mixture obtained by aggregate and water is added into cement, is mainly used for spraying or fill
The surface on slope, or adjust material as concrete.In this cement mortar, common type is 1:2 mortars, cement with
The ratio of aggregate be 1-2,1:The cement of 3 mortars and gather materials than for 1-3.Resin mortar be by by resin (organic bond) such as
Styrene-butadiene latex (SBR), ethylene-vinyl acetate (Eva) or polyacrylate (PAB) lotion are mixed into above-mentioned cement mortar
And the mixture obtained.But from the point of view of earthquake safety, the adhesion strength of cement mortar is typically down to 0.3N/M2
To 0.5N/MM2, intensity is far below 2N/MM2Value, even without reaching 1.2N/MM2Value, this is considered as routine safety
Measurement；Further, since its water imbibition is high, it is vulnerable to expansion or shrinkage, expansion or shrinkage can lead to its deterioration repeatedly, so as to cause
It peels off or cracks.Further, since the characteristic of resin itself still has, therefore caused by environmental factor such as ultraviolet light and rainwater
Deterioration is more notable, such as causes durability poor, it is impossible to be used in practical application；In addition, since resin itself is flammable, so tree
Fat mortar be not suitable for can fire hazard place use, in addition to this, there is also many problems, such as resin to be attached to people
Skin on cause fash and organic solvent to volatilize caused by environmental pollution etc..
Invention content
According to the above deficiency, the present invention, which provides one kind, having sufficiently high adhesion strength to meet earthquake safety standard, tool
There is Large strain level, there is high compressive strength, high bending strength and high trace performance, be not easy expansion or shrinkage, be not easy at any time
It elapses and deteriorates and be not easy the cement composition and preparation method thereof by cracks influence.
To achieve the above object, one aspect of the present invention provides a kind of cement composition, its composition of the cement composition
And parts by weight are：30-40 parts of cement, 45-55 parts of sand, methoxyl group (polyethylene glycol) methacrylate copolymer (polycarboxylic acids
Be powdered water-reducing agent 1) 0.08-0.1 parts of mixed mortar material, 15-20 parts of water；0.08-0.9 parts of water-retaining agent, carbon-based powder
1-1.5 parts, 0.15-0.25 parts of antifoaming agent, 0.3-0.9 parts of gypsum.
Another aspect of the present invention provides a kind of preparation method of the cement composition as described in one aspect of the invention, including
Following steps,
Cement into agitator and addition methoxyl group (polyethylene glycol) methacrylate copolymer in the mixture of sand
The mixed mortar material of (polycarboxylic-acid powdered water-reducing agent 1)；So that the viscosity of the mixture of cement and sand generates an increasing
Long-term and three reduction phases variation；
Within the rise period, the viscosity of the mixture of cement and sand increases to peak value from initial value；
Within first reduction phase, the viscosity of the mixture of cement and sand is reduced to the first median from peak value,
In two reduction phases, the viscosity of the mixture of cement and sand is reduced to the second median from the first median, subtracts in third
In the small phase, the viscosity of the mixture of cement and sand drops to stationary value from the second median；In second reduction phase cement and
The reduction speed of the viscosity of the mixture of sand is less than first mixture for reducing cement and sand in phase and third reduction phase
Viscosity reduction speed；
Wherein, methoxyl group (polyethylene glycol) methacrylate copolymer is the powdered water-reducing agent of polycarboxylic-acid, methoxyl group
(polyethylene glycol) methacrylate copolymer and cement mixing；
Blender is provided in the agitator, the blender is driven by motor.
Compared with prior art, advantage of the present invention is as follows：
The cement composition and preparation method thereof of the present invention, cement composition are without using any organic bond
In the case of carry out needed for adhesion strength cement composition, preparation method by cement granules by being dispersed in mortar mix
In object, to make in the fine groove and gap that cement granules and cement gel easily infiltrate into object so that cement sticks together,
Since electrostatic repulsion acts on, between the cement granules by high scope gas tracting subtractive agent negative electrical charge, cement granules are uniformly dispersed
In cement composition；Make its cement composition that there is sufficiently high adhesion strength, disclosure satisfy that seismic safety standard, there is height
Strain level has high compressive strength, has high bending strength and high trace performance, is not easy expansion or shrinkage, is not easy at any time
It elapses and deteriorates, and be not easy by cracks influence.
Specific implementation mode
The specific embodiment of the invention is described with reference to embodiment：
Embodiment 1：
A kind of cement composition, its composition and parts by weight of the cement composition are：30-40 parts of cement, sand 45-55
Part, the mixed mortar material of methoxyl group (polyethylene glycol) methacrylate copolymer (polycarboxylic-acid powdered water-reducing agent 1)
0.08-0.1 parts, 15-20 parts of water；0.08-0.9 parts of water-retaining agent, 1-1.5 parts of carbon-based powder, 0.15-0.25 parts of antifoaming agent, gypsum
0.3-0.9 parts.
Preferably, water-retaining agent is one or both of cellulose water-retaining agent, acrylic acid water-retaining agent and vinyl water-retaining agent
More than.
Preferably, water-retaining agent is methylcellulose, hydroxyethyl cellulose or methyl hydroxyethylcellulose.
Embodiment 2：
A kind of preparation method of cement composition as described in Example 1, includes the following steps,
Cement into agitator and addition methoxyl group (polyethylene glycol) methacrylate copolymer in the mixture of sand
The mixed mortar material of (polycarboxylic-acid powdered water-reducing agent 1)；So that the viscosity of the mixture of cement and sand generates an increasing
Long-term and three reduction phases variation；
Within the rise period, the viscosity of the mixture of cement and sand increases to peak value from initial value；
Within first reduction phase, the viscosity of the mixture of cement and sand is reduced to the first median from peak value,
In two reduction phases, the viscosity of the mixture of cement and sand is reduced to the second median from the first median, subtracts in third
In the small phase, the viscosity of the mixture of cement and sand drops to stationary value from the second median；In second reduction phase cement and
The reduction speed of the viscosity of the mixture of sand is less than first mixture for reducing cement and sand in phase and third reduction phase
Viscosity reduction speed；
Wherein, methoxyl group (polyethylene glycol) methacrylate copolymer is the powdered water-reducing agent of polycarboxylic-acid, methoxyl group
(polyethylene glycol) methacrylate copolymer and cement mixing；
Blender is provided in the agitator, the blender is driven by motor.
When preferably, the viscosity of the mixture of cement and sand is driven by motor to be stirred for the blender
Current value measures.
Preferably, peak value 3.75A.
Preferably, the blender is measured in load current to drive to stir the mixture of cement and sand by motor
When current value.
Preferably, the current value refers to from starting the mixture of cement and sand being injected into the agitator at 1 minute
Inside reach load current when being stirred the mixture.
Preferably, the rated value of the motor be 100V, 560 revs/min, 50-60Hz.
Preferably, the blender is provided with stirring blade.
It should be noted that mixing time is determined according to water consumption, temperature and humidity.When the manual operation blender
When, by the mixture of cement and sand in 550 to 700 revs/min of stir abouts 6 minutes.Compared with conventional slurry composition, the present invention
Cement composition there is bond strength, shorter firm time and higher initial strength after specific operation and hardening.
Cement gel is saturated and is filled into the fine groove and recess of concrete surface, penetrates into and the cement gel of filling is recessed at these
It hardens and expands in slot and recess, to generate anchor-shaped effect.The raising of cement gel penetrating power and anchoring position intensity
Raising helps to improve adhesion strength.When individually improving adhesion strength, the resin mortar containing incrementss resin can be used.
However, in mortar the increase of resin demand can bring durability, safety and it is of high cost the problems such as.Therefore, in the present invention, exist
While ensuring the use intensity and mixing time of material, it is ensured that adhesion strength is considered to bond to meet earthquake safety
The balance that intensity and other strains require, such as high strain-rate keep its compression strength high, and bending strength is high, and durability is good, cost
It is low.Adaptability to changes indicates the contraction of cylindrical sample and swell increment when applying in compressive load to sample.Strain level is bigger,
It shrinks and swell increment is bigger, followability is higher.On the contrary, the value of strain level is smaller, shrinks and the amount of expansion is with regard to smaller, therefore have
There is lower followability.When the power to the material application same size with Large strain level and the material with low strain dynamic level
When, the material with Large strain level shows more to deform.Due to the cement composition and traditional cement mortar of the present invention
Compared to higher strain level, when it is under pressure, deformation is big and scalability (followability) is high.The present invention ensures
5000 μm or more of strain level." compression strength " refers to resistance of the material when bearing compression stress, used herein of " curved
Qu Qiangdu " refers to resistance of the material when bearing bending stress.If material has very high bending strength, even if bending, material
Material is not easy to crack.Therefore, the material with high compressive strength and Large strain level is not susceptible to be broken, even if by big
Power is not easy to be influenced by crackle when even if being bent in the present invention.The present invention in cement composition by being added poly- carboxylic
Acids water-reducing agent, mortar material (cement granules) is evenly dispersed in water, this makes the water content in cement composition simultaneously
It reduces, to keep flexibility, so that it is guaranteed that machinability.Gypsum and/or hydrate in the present invention are used as cement composition
Material, to improve expansive force, and while preventing due to hardening of cement, shrinks the crack of generation due to hardening, furthermore it is possible to so that
Starting stage intensity, such as adhesive strength, compression strength or bending strength, are improved simultaneously.The gypsum of the present invention, can be from two water
One or more kinds of gypsum are suitably selected in gypsum, semi-hydrated gypsum and anhydrous gypsum, wherein preferably anhydrous gypsum, because its
Stability after hardening is more preferable.Since if amount of gypsum is too big, it will appear due to highly expanded power and become easier to be split
The problem of line, gypsum content are preferably 9 grams.Water-retaining agent is added in cement composition can provide higher water-retaining property and infiltration
Ability.In cement or mortar, if the water that evaporation is excessive, viscosity can increase, and be difficult to use, therefore, using with guarantor
Aqueous additive contributes to processability, in addition, by using water-retaining agent, increases compatibility, and cement composition is made to permeate
To the fine recesses or recess of body surface, to more firmly be adhered on object.In addition, if the water-retaining agent that uses
Amount is too small, then cannot obtain satisfactory water-retaining property, on the contrary, if water-retaining agent dosage is excessive, the viscosity mistake of cement composition
Degree improves, and slamp value reduces, and leads to that working performance can be deteriorated, then comes from the angle of machinability and the balance of various intensity values
It sees, the amount of used water-retaining agent is preferably 0.8 gram -1.2 grams.The carbon-based powder can improve working performance, enhancing surface
Hardness and acceleration hydrated cementitious.The fine grained of carbon-based powder mixed electrodeization and electric discharge electronics in presence of water, and when putting
When the electronics of electricity is with water or cement granules molecular collision, generates heat and accelerate the aquation of cement.In general, temperature is higher,
Hydrated cementitious accelerates higher.Carbon-based powder can properly select one from common carbon-based powder (such as powdery carbon and granulated carbon)
Kind or two or more carbon-based powders.If the amount of the carbon-based powder used is too small, enough case hardnesses cannot be obtained.Such as
Fruit carbon-based powder amount is too big, then longtime compressive strength may deteriorate, then carbon-based powder, strong particularly as used for the starting stage is needed
Degree in application, from the point of view of between machinability and various balances, the amount of addition is preferably 12~18 grams.Foaming agent
Preferably 1.5 grams of amount.If the water used is too small, the viscosity of cement composition increases, and machinability may deteriorate, on the contrary,
Enough slurry composition intensity cannot be obtained if water consumption is too big, after hardening, further, since occurring in plastered finish excessive
Water, machinability may deteriorate, then preferably used in water be 200 grams.
The preferred embodiment for the present invention is explained in detail above, but the present invention is not limited to the above embodiment,
Those of ordinary skill in the art within the scope of knowledge, can also make various without departing from the purpose of the present invention
Variation.
Many other changes and remodeling can be made by not departing from the spirit and scope of the present invention.It should be appreciated that the present invention is not
It is limited to specific embodiment, the scope of the present invention is defined by the following claims.
Claims (10)
1. a kind of cement composition, which is characterized in that the cement composition its composition and parts by weight be：Cement 30-40
Part, 45-55 parts of sand, the mixing of methoxyl group (polyethylene glycol) methacrylate copolymer (polycarboxylic-acid powdered water-reducing agent 1)
0.08-0.1 parts of mortar material, 15-20 parts of water；0.08-0.9 parts of water-retaining agent, 1-1.5 parts of carbon-based powder, antifoaming agent 0.15-0.25
Part, 0.3-0.9 parts of gypsum.
2. cement composition as described in claim 1, which is characterized in that water-retaining agent is cellulose water-retaining agent, acrylic acid water conservation
One or more of agent and vinyl water-retaining agent.
3. cement composition as described in claim 1, which is characterized in that water-retaining agent is methylcellulose, hydroxyethyl cellulose
Or methyl hydroxyethylcellulose.
4. a kind of preparation method of cement composition as claimed in any one of claims 1-3, which is characterized in that including following
Step,
Cement into agitator and addition methoxyl group (polyethylene glycol) methacrylate copolymer (poly- carboxylic in the mixture of sand
The powdered water-reducing agent of acid system 1) mixed mortar material；So that the viscosity of the mixture of cement and sand generate a rise period and
The variation of three reduction phases；
Within the rise period, the viscosity of the mixture of cement and sand increases to peak value from initial value；
Within first reduction phase, the viscosity of the mixture of cement and sand is reduced to the first median from peak value, at second
In the reduction phase, the viscosity of the mixture of cement and sand is reduced to the second median from the first median, in the third reduction phase
Interior, the viscosity of the mixture of cement and sand drops to stationary value from the second median；Cement and sand in second reduction phase
The reduction speed of the viscosity of mixture is less than first and reduces gluing for the mixture of cement and sand in phase and third reduction phase
The reduction speed of consistency；
Wherein, methoxyl group (polyethylene glycol) methacrylate copolymer is the powdered water-reducing agent of polycarboxylic-acid, methoxyl group (poly- second
Glycol) methacrylate copolymer and cement mixing；
Blender is provided in the agitator, the blender is driven by motor.
5. the preparation method of cement composition as claimed in claim 4, which is characterized in that the mixture of cement and sand it is sticky
Current value metering when degree is driven by motor to be stirred for the blender.
6. the preparation method of cement composition as claimed in claim 5, which is characterized in that peak value 3.75A.
7. the preparation method of cement composition as claimed in claim 6, which is characterized in that stirred described in being measured in load current
Mix current value when device is driven by motor to stir the mixture of cement and sand.
8. the preparation method of cement composition as claimed in claim 7, which is characterized in that the current value refers to from starting water
The mixture of mud and sand is injected into the agitator to the load electricity reached in 1 minute when being stirred the mixture
Stream.
9. the preparation method of cement composition as claimed in claim 8, which is characterized in that the rated value of the motor is
100V, 560 revs/min, 50-60Hz.
10. the preparation method of cement composition as claimed in claim 4, which is characterized in that the blender is provided with stirring
Blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810651881.1A CN108675744A (en) | 2018-06-22 | 2018-06-22 | A kind of cement composition and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810651881.1A CN108675744A (en) | 2018-06-22 | 2018-06-22 | A kind of cement composition and preparation method thereof |
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| CN108675744A true CN108675744A (en) | 2018-10-19 |
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| CN201810651881.1A Pending CN108675744A (en) | 2018-06-22 | 2018-06-22 | A kind of cement composition and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1435344A1 (en) * | 2002-10-11 | 2004-07-07 | Advanced Technology Co., Ltd. | Mortar composition |
| CN102503285A (en) * | 2011-11-10 | 2012-06-20 | 南京工业大学 | Polymer-modified early-strengthening repair mortar and preparation method and application thereof |
| CN106082848A (en) * | 2016-06-14 | 2016-11-09 | 马鞍山十七冶工程科技有限责任公司 | A kind of novel interfacial mortar formula |
-
2018
- 2018-06-22 CN CN201810651881.1A patent/CN108675744A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1435344A1 (en) * | 2002-10-11 | 2004-07-07 | Advanced Technology Co., Ltd. | Mortar composition |
| CN1564793A (en) * | 2002-10-11 | 2005-01-12 | 先进技术株式会社 | Mortar composition |
| CN102503285A (en) * | 2011-11-10 | 2012-06-20 | 南京工业大学 | Polymer-modified early-strengthening repair mortar and preparation method and application thereof |
| CN106082848A (en) * | 2016-06-14 | 2016-11-09 | 马鞍山十七冶工程科技有限责任公司 | A kind of novel interfacial mortar formula |
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