CN110330280A - A kind of wet-mixing plastering mortar and preparation method thereof - Google Patents
A kind of wet-mixing plastering mortar and preparation method thereof Download PDFInfo
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- CN110330280A CN110330280A CN201910547058.0A CN201910547058A CN110330280A CN 110330280 A CN110330280 A CN 110330280A CN 201910547058 A CN201910547058 A CN 201910547058A CN 110330280 A CN110330280 A CN 110330280A
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- wet
- latex
- plastering mortar
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00508—Cement paints
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent 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
- 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
Landscapes
- 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 present invention relates to a kind of wet-mixing plastering mortars and preparation method thereof, belong to building material technical field, be made of the raw material comprising following parts by weight: 170~190 parts of cement, 25~35 parts of calcium powder, 1285~1515 parts of fine aggregate, 20~28 parts of polymer modifiers, 12~17 parts of additive and 205~225 parts of water.The fine aggregate is made of at least one of fine sand and middle sand, the polymer modifiers includes at least one of structural polybutadiene grafted polystyrene glycidyl methacrylate latex, acrylic acid ester emulsion, redispersable latex powder, styrene-butadiene latex and polychloroprene latex, and the additive includes water-reducing agent and setting time regulator.The present invention has the effect of that drying shrinkage is small, is not susceptible to hollowing, cracking.
Description
Technical field
The present invention relates to construction material mortar technical field, more specifically, it relates to a kind of wet-mixing plastering mortar and its
Preparation method.
Background technique
Plastering mortar is to brush to play a kind of building mortar that is levelling or meeting decorations requirement on building surface, wet
Mixing plastering mortar then is by cementitious material, fine aggregate, additive and water and the various components determined according to performance, by certain ratio
Example is transported to place to use with agitator truck in mixing plant after metering, mixing, is put into special container storage, and in regulation
It is interior to use the mortar mix finished.Due to the production of wet-mixing plastering mortar, mixing place and it is constructed, place to use does not exist
Same position needs wet mixing mortar to have good volume stability, longer setting time and keeps good consistency.Together
When, for the easy cracking, hollowing, peeling and other issues for overcoming plastering mortar to occur in actual use, it is desirable that wet-mixing is smeared
Lime and brick improves its impervious and intensity, reduces shrinkage cracking under the premise of keeping good workability.
In the prior art, the patent application that notification number is 107879685 A of CN discloses a kind of wet-mixing that setting time is long
Mortar, raw material include: 20-30 parts of blast-furnace cinder, gravel 60-80 parts of gobi, 15-25 parts of cement, flyash according to parts by weight
2-8 parts, 1-2 parts of epoxidized soybean oil, steady modeling agent 1-2,2-4 parts of microcrystalline cellulose, 1-2 parts of retarder, 1-2 parts of water-reducing agent, water 30-
60 parts.Cooperate by using epoxidized soybean oil and other compositions, increase the cohesive force of aggregate and cement, with reduce mortar hollowing,
The phenomenon that cracking, occurs, but the drying shrinkage deformation of wet mixing mortar is not improved, and in the area of vaporizing and drying, mortar makes
Easily occurs dry shrinkage fracture in.
Summary of the invention
In view of the deficienciess of the prior art, the first purpose of this invention is to provide a kind of wet-mixing plastering mortar,
Have the advantages that drying shrinkage is small, be not susceptible to hollowing, cracking.
Second object of the present invention is to provide a kind of preparation method of wet-mixing plastering mortar have obtained mortar equal
Advantage even, quality is stable.
To realize above-mentioned first purpose, the present invention provides the following technical scheme that a kind of wet-mixing plastering mortar, described wet
Plastering mortar is mixed to be made of the raw material comprising following parts by weight: 170~190 parts of cement, 25~35 parts of calcium powder, 1285~
1515 parts of fine aggregate, 20~28 parts of polymer modifiers, 12~17 parts of additive and 205~225 parts of water.
The fine aggregate is made of at least one of fine sand and middle sand, and the polymer modifiers includes that polybutadiene connects
Branch polystyrylmethyl Glycidyl Acrylate latex, acrylic acid ester emulsion, redispersable latex powder, styrene-butadiene latex and neoprene
At least one of cream, the additive include water-reducing agent and setting time regulator.
By using above-mentioned technical proposal, using cement, calcium powder and fine aggregate as main component, by adding polymer modification
Agent and additive, are modified cement, and adjust the water consumption and working performance of mortar, have wet-mixing plastering mortar relatively strong
Water-retaining property and cohesive force, lower shrinking percentage, the problems such as advantageously reducing wall crazing, hollowing, dusting.Wherein, calcium powder
Main component is calcium carbonate, and toughness and intensity that calcium powder is conducive to improve mortar are mixed into mortar raw material.Fine aggregate is by middle sand
And/or fine sand composition, middle sand refer to that detrital grain of the partial size within the scope of 0.5~0.25mm, fine sand refer to that partial size is greater than
The particle of 0.075mm, fine sand and middle sand can be used as gathering materials of filling in mortar.
The polymer modifiers that the present invention uses is can improve mortar performance, degree of hydration and the polymerization of microstructure
Object, structural polybutadiene grafted polystyrene glycidyl methacrylate latex have good film forming and stability, are conducive to
It reduces the drying shrinkage deformation of wet-mixing plastering mortar, promote the degree of hydration of cement, improve its weatherability.In wet-mixing plastering mortar
Using acrylic acid ester emulsion, be conducive to improve the anti-corrosion of mortar, impervious, ageing-resistant and corrosion resistance.Redispersable latex powder
With adhesion strength more outstanding, be conducive to the adhesiveness for improving flexibility of mortar, improving mortar.Styrene-butadiene latex is used for cement bonded sand
The modification of slurry is conducive to the physical mechanical property, anti-permeability performance and the anti-freezing property that improve mortar.Polychloroprene latex has good anti-
Aqueous and caking property is conducive to the adhesion strength and waterproof performance that improve mortar.
It includes water-reducing agent and setting time regulator that addition, which is additive, in wet-mixing plastering mortar of the present invention, and water-reducing agent is to sand
Cement granules in slurry have peptizaiton, advantageously reduce unit consumption of water, and setting time regulator is with deferred action
Regulator can adjust additional amount according to the condition of construction of construction site, mortar is made to have the suitable open hour.
The present invention is further arranged to, and the polymer modifiers is by least one in styrene-butadiene latex and acrylic acid ester emulsion
Kind is formed with structural polybutadiene grafted polystyrene glycidyl methacrylate latex.Preferably, the polymer modifiers packet
Include 10~13 parts structural polybutadiene grafted polystyrene glycidyl methacrylate latex, 2~4 parts of styrene-butadiene latex and 6~
9 parts of acrylic acid ester emulsion.
By using above-mentioned technical proposal, any one in styrene-butadiene latex and acrylic acid ester emulsion or two kinds and polybutadiene
The cooperation of alkene grafted polystyrene glycidyl methacrylate latex is conducive to improve the resist drying shrinkage of mortar and impervious
Performance.When three compounds according to aforementioned proportion, is conducive to the physical mechanical property for improving mortar, keeps mortar ageing-resistant, fine and close
Property it is good, be not susceptible to hollowing, cracking the case where.
The present invention is further arranged to, in the structural polybutadiene grafted polystyrene glycidyl methacrylate latex
The mass ratio of polybutadiene, polystyrene and glycidyl methacrylate is 12.5:11.5:1.
By using above-mentioned technical proposal, dibutene, polystyrene and glycidyl methacrylate are according to above-mentioned ratio
The graft copolymerization product that example is prepared has good modified effect to mortar.
The present invention is further arranged to, and the fine aggregate includes in 1000~1200 parts of fine sand and 285~315 parts
Sand.
By using above-mentioned technical proposal, when fine aggregate is made of the fine sand and middle sand of above-mentioned parts by weight, mortar have compared with
Good intensity will not generate adverse effect to dry shrink of mortar.
The present invention is further arranged to, and the additive includes 10~13 parts of water-reducing agent and 2~4 parts of setting time tune
Save agent.
By using above-mentioned technical proposal, the water-reducing agent and setting time regulator of above-mentioned dosage cooperate, and advantageously reduce
Mortar water consumption improves the working performance of mortar, and the dosage of setting time regulator can be according to construction site and preparation scene
Distance and the factors such as season, weather adjust within the above range.
The present invention is further arranged to, and is made of the raw material comprising following parts by weight: 175~185 parts of cement, 28~32
Calcium powder, 1050~1150 parts of the fine sand, 290~310 parts of middle sand, 10~13 parts of structural polybutadiene grafted polystyrene first of part
When base Glycidyl Acrylate latex, 2~4 parts of styrene-butadiene latex, 6~9 parts of acrylic acid ester emulsion, 2.5~3.5 parts of condensation
Between regulator, 11~12 parts of water-reducing agent and 210~220 parts of water.
To realize above-mentioned second purpose, the present invention provides the following technical scheme that a kind of preparation of wet-mixing plastering mortar
Method weighs each raw material component according to parts by weight, and 20~40s first is mixed in cement, fine aggregate and calcium powder, is then added
Polymer modifiers, additive and water continue 100~115s of stirring.
It is first that solid material is dry-mixed by using above-mentioned technical proposal, after mixing be added polymer modifiers and
Additive is stirred simultaneously during addition, is conducive to improve the effect of polymer modifiers and additive to dry blend
Effect, water can be added together with modifying agent and additive, can also be after polymer modifiers and additive is added and then
Water is added, is uniformly mixed unclassified stores with water by stirring, obtains wet-mixing plastering mortar.
In conclusion advantageous effects of the invention are as follows:
One, by adding polymer modifiers into mortar, make drying shrinkage, anti-permeability performance and the physical mechanical property of mortar
It is all effectively improved, is cooperated with cement, fine aggregate and additive, obtain the good wet-mixing plastering mortar of working performance.
Two, polymer modifiers uses structural polybutadiene grafted polystyrene glycidyl methacrylate latex and butadiene-styrene rubber
Cream, acrylic acid ester emulsion cooperation, have good modifying function to mortar, have good protective action and resistance in use in mortar
Ageing properties, the case where being not susceptible to hollowing and crack.
Specific embodiment
Specific person is not specified in embodiment, carries out according to conventional conditions or manufacturer's recommended conditions.Agents useful for same or instrument
Production firm person is not specified in device, is the conventional products that can be obtained by commercially available purchase.
The cement used in the embodiment of the present invention in the case where being not particularly illustrated, subtracts for the P.O42.5R purchased from E Ta
Aqua uses polycarboxylate water-reducer, and setting time regulator uses sodium gluconate.
The preparation example of structural polybutadiene grafted polystyrene glycidyl methacrylate latex
Preparation example 1
By the dibutene latex of 1kg and 2L deionized water, 7g glucose and 5g sodium pyrophosphate, 0.1g ferrous sulfate is then added
With the potassium hydroxide of 1g, 70 DEG C of reaction temperature is maintained under nitrogen protection, and the hydrogen peroxide that 3mL is added dropwise into reaction solution is different
Phenylpropyl alcohol, 0.92kg styrene and 0.08kg glycidyl methacrylate, the reaction was continued 2h after being added dropwise to complete, after reaction
With sulfuric acid magnesium precipitate filter, washing precipitating to get.
Embodiment
Embodiment one
A kind of wet-mixing plastering mortar, raw material include the cement of 25.5kg, the calcium powder of 3.75kg, the fine sand of 150kg, 42.75kg
Middle sand, the structural polybutadiene grafted polystyrene glycidyl methacrylate latex of 1.5kg, 0.9kg acrylic acid ester emulsion,
The styrene-butadiene latex of 0.3kg, the water-reducing agent of 1.5kg, the setting time regulator of 0.3kg and the water of 30.75kg, the present embodiment are adopted
Structural polybutadiene grafted polystyrene glycidyl methacrylate latex is the preparation gained of preparation example 1, is smeared in preparation wet-mixing
When lime and brick, 20s first is mixed in cement, calcium powder, fine sand and middle sand, remaining raw material is then added, continues to stir
After 115s to get.
Embodiment two
A kind of wet-mixing plastering mortar, raw material include the cement of 24.5kg, the calcium powder of 3.92kg, the fine sand of 147kg, 40.6kg
Middle sand, the structural polybutadiene grafted polystyrene glycidyl methacrylate latex of 1.5kg, 1kg acrylic acid ester emulsion,
The styrene-butadiene latex of 0.3kg, the water-reducing agent of 1.5kg, the setting time regulator of 0.35kg and the water of 29.4kg, the present embodiment are adopted
Structural polybutadiene grafted polystyrene glycidyl methacrylate latex is the preparation gained of preparation example 1, is smeared in preparation wet-mixing
When lime and brick, 40s first is mixed in cement, calcium powder, fine sand and middle sand, remaining raw material is then added, continues to stir
After 100s to get.
Embodiment three
A kind of wet-mixing plastering mortar, raw material include the cement of 25.2kg, the calcium powder of 4.2kg, the fine sand of 154kg, in 42kg
Sand, the structural polybutadiene grafted polystyrene glycidyl methacrylate latex of 1.7kg, 1.1kg acrylic acid ester emulsion,
The styrene-butadiene latex of 0.42kg, the water-reducing agent of 1.61kg, the setting time regulator of 0.42kg and the water of 30.1kg, the present embodiment are adopted
Structural polybutadiene grafted polystyrene glycidyl methacrylate latex is the preparation gained of preparation example 1, is smeared in preparation wet-mixing
When lime and brick, 30s first is mixed in cement, calcium powder, fine sand and middle sand, remaining raw material is then added, continues to stir
After 110s to get.
Example IV is to seven
The present embodiment and the difference of embodiment one essentially consist in: the raw materials used formula of the wet-mixing plastering mortar of example IV to seven is such as
Shown in table 1.
The composition of raw materials of 1 example IV of table to seven
Comparative example
Comparative example one
The difference of this comparative example and embodiment one essentially consists in: not adding polymer modifiers in the composition of raw materials of this comparative example.
Performance detection test
According to the national standard of " premixing mortar " (GB/T 25181-2010) to the sand of various embodiments of the present invention and comparative example
Slurry is detected, and water retention, 14d tensile bond strength, compression strength, 28d shrinking percentage and the impermeability of mortar, detection knot are detected
Fruit is as shown in table 2.
The testing result of each embodiment and comparative example of table 2
| Group | Water retention/% | 14d tensile bond strength/MPa | 28d compression strength | 28d shrinking percentage/% | It is impervious |
| Embodiment one | 92.6 | 0.31 | 23.5 | 0.08 | P6 |
| Embodiment two | 93.1 | 0.36 | 23.8 | 0.06 | P6 |
| Embodiment three | 93.4 | 0.38 | 24.6 | 0.05 | P6 |
| Example IV | 92.7 | 0.35 | 23.4 | 0.07 | P6 |
| Embodiment five | 92.3 | 0.36 | 22.9 | 0.08 | P6 |
| Embodiment six | 91.2 | 0.24 | 21.3 | 0.11 | P4 |
| Embodiment seven | 91.4 | 0.28 | 21.7 | 0.10 | P4 |
| Comparative example one | 90.8 | 0.22 | 13.4 | 0.22 | - |
As can be seen from Table 2, the mortar of each embodiment preparation can satisfy the requirement of relevant criterion, mortar bonding obtained is strong
Degree and compression strength are higher, shrinking percentage is lower, it is seen that formula preparation wet-mixing plastering mortar according to the invention has compression strength
The effect high, shrinking percentage is low, anti-permeability performance is good.Wherein, the mortar compression strength and anti-contracility of embodiment six and embodiment seven
Energy, impermeability are below other embodiments, it was demonstrated that polymer modifiers uses structural polybutadiene grafted polystyrene methacrylic acid
Polyglycidyl latex and styrene-butadiene latex, acrylic acid ester emulsion cooperate, and have excellent modified effect to mortar.Comparative example one is not added with
The wet-mixing plastering mortar of polymer modifiers, shrinking percentage are difficult to meet the requirement of standard, compressive property and it is impervious also significantly
It reduces, it was demonstrated that polymer modifiers plays an important role to the compressive property and anti-permeability performance of the high mortar of mortar lifting.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (8)
1. a kind of wet-mixing plastering mortar, which is characterized in that the wet-mixing plastering mortar is made of the raw material comprising following parts by weight:
170~190 parts of cement, 25~35 parts of calcium powder, 1285~1515 parts of fine aggregate, 18~26 parts of polymer modifiers,
12~17 parts of additive and 205~225 parts of water；
The fine aggregate is made of at least one of fine sand and middle sand；
The polymer modifiers includes structural polybutadiene grafted polystyrene glycidyl methacrylate latex, acrylate cream
At least one of liquid, redispersable latex powder, styrene-butadiene latex and polychloroprene latex；
The additive includes water-reducing agent and setting time regulator.
2. a kind of wet-mixing plastering mortar according to claim 1, which is characterized in that the polymer modifiers is by butadiene-styrene rubber
At least one of cream and acrylic acid ester emulsion are formed with structural polybutadiene grafted polystyrene glycidyl methacrylate latex.
3. a kind of wet-mixing plastering mortar according to claim 2, which is characterized in that the polymer modifiers include 10~
13 parts of structural polybutadiene grafted polystyrene glycidyl methacrylate latex, 2~4 parts of styrene-butadiene latex and the third of 6~9 parts
Olefin(e) acid ester lotion.
4. a kind of wet-mixing plastering mortar according to claim 1, which is characterized in that the structural polybutadiene grafted polystyrene
Polybutadiene, polystyrene in glycidyl methacrylate latex and the mass ratio of glycidyl methacrylate are
12.5:11.5:1.
5. a kind of wet-mixing plastering mortar according to claim 1, which is characterized in that the fine aggregate includes 1000~1200
The fine sand and 285~315 parts of middle sand of part.
6. a kind of wet-mixing plastering mortar according to claim 1, which is characterized in that the additive includes 10~13 parts
Water-reducing agent and 2~4 parts of setting time regulator.
7. a kind of wet-mixing plastering mortar as claimed in any of claims 1 to 6, which is characterized in that by comprising following
The raw material of parts by weight is made: 175~185 parts of cement, 28~32 parts of calcium powder, 1050~1150 parts of fine sand, 290~310
Middle sand, 10~13 parts of the structural polybutadiene grafted polystyrene glycidyl methacrylate latex, 2~4 parts of butadiene-styrene rubber of part
Cream, 6~9 parts of acrylic acid ester emulsion, 2.5~3.5 parts of setting time regulator, 11~12 parts of water-reducing agent and 210~220
The water of part.
8. a kind of preparation method of wet-mixing plastering mortar as claimed in any of claims 1 to 7, which is characterized in that
Each raw material component is weighed according to parts by weight, 20~40s first is mixed in cement, fine aggregate and calcium powder, and polymerization is then added
Object modifying agent, additive and water continue 100~115s of stirring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910547058.0A CN110330280A (en) | 2019-06-24 | 2019-06-24 | A kind of wet-mixing plastering mortar and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910547058.0A CN110330280A (en) | 2019-06-24 | 2019-06-24 | A kind of wet-mixing plastering mortar and preparation method thereof |
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| Publication Number | Publication Date |
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| CN110330280A true CN110330280A (en) | 2019-10-15 |
Family
ID=68142588
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910547058.0A Withdrawn CN110330280A (en) | 2019-06-24 | 2019-06-24 | A kind of wet-mixing plastering mortar and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115353351A (en) * | 2022-08-29 | 2022-11-18 | 新疆科能新材料技术股份有限公司 | Thin-spraying high-performance polymer mortar for protecting tunnel rock |
-
2019
- 2019-06-24 CN CN201910547058.0A patent/CN110330280A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115353351A (en) * | 2022-08-29 | 2022-11-18 | 新疆科能新材料技术股份有限公司 | Thin-spraying high-performance polymer mortar for protecting tunnel rock |
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Application publication date: 20191015 |