CN112624715A - Waterproof mortar and preparation method and application thereof - Google Patents
Waterproof mortar and preparation method and application thereof Download PDFInfo
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- CN112624715A CN112624715A CN202011403002.7A CN202011403002A CN112624715A CN 112624715 A CN112624715 A CN 112624715A CN 202011403002 A CN202011403002 A CN 202011403002A CN 112624715 A CN112624715 A CN 112624715A
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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
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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
- 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
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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
- 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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Abstract
The invention relates to waterproof mortar, which comprises a liquid material component and a powder component, wherein the liquid material component comprises styrene-acrylate copolymer emulsion in parts by weight: 20-50 parts of a solvent; vinyl acetate-ethylene copolymer: 10-40 parts; 10-20 parts of workability improver; film-forming auxiliary agent: 1-5 parts; defoaming agent: 0.3-0.9 part; water: 15-60 parts; the powder component comprises ordinary portland cement: 10-40 parts; aluminate cement: 5-40 parts; gypsum: 5-17 parts; glass sand: 25-50 parts; glass powder: 5-15 parts of a solvent; water reducing agent: 0.1-0.5 part; a stabilizer: 0.05-0.3 part; and (3) setting control agent: 0.05-0.5 part; fiber: 0.1 to 1 portion. The waterproof mortar provided by the invention has the performances of good mortar cohesiveness, proper setting time, high compressive and flexural strength, low bleeding amount, uniform appearance, no sediment and strong scratch resistance, and in addition, the waterproof mortar provided by the invention has good construction performance at different external environment temperatures.
Description
Technical Field
The invention relates to the technical field of polymer cement-based materials, in particular to waterproof mortar and a preparation method thereof.
Background
At present, with the development of polymer cement-based materials, polymer cement waterproof mortar is widely applied in a plurality of projects, the polymer cement waterproof mortar has the advantages of strong cohesiveness, excellent waterproof, anti-permeability and anti-cracking performances, convenient and quick construction, good flatness and the like, along with the gradual application of various recycled materials, the research on the product formula of the related polymer cement waterproof mortar is gradually deepened, but in the current market, the various polymer cement waterproof mortars using the recycled materials still have the problems of reduced compression/rupture strength and viscosity, high bleeding amount and long setting time, and the further application of the polymer cement waterproof mortar in the polymer cement-based materials is limited.
Disclosure of Invention
Based on the above, there is a need for a waterproof mortar, which aims to solve the technical problems of the prior art, such as reduced compressive/flexural strength and viscosity, high bleeding amount and long setting time of the waterproof mortar using recycled materials.
In order to achieve the above purpose, the present invention provides a technical solution:
a waterproof mortar comprises a liquid material component and a powder material component, wherein the liquid material component and the powder material component are counted by weight,
the liquid material comprises the following components:
styrene-acrylate copolymer emulsion: 20-50 parts of a solvent;
vinyl acetate-ethylene copolymer: 10-40 parts;
10-20 parts of workability improver;
film-forming auxiliary agent: 1-5 parts;
defoaming agent: 0.3-0.9 part;
water: 15-60 parts;
the powder material comprises the following components:
portland cement: 10-40 parts;
aluminate cement: 5-40 parts;
gypsum: 5-17 parts;
glass sand: 25-50 parts;
glass powder: 5-15 parts of a solvent;
water reducing agent: 0.1-0.5 part;
a stabilizer: 0.05-0.3 part;
and (3) setting control agent: 0.05-0.5 part;
fiber: 0.1 to 1 portion.
Preferably, the liquid component further comprises a preservative: 0.5-1.5 parts;
preferably, the powder component further comprises at least one of:
granulating blast furnace slag powder: 3-10 parts;
calcite powder: 5-10 parts;
water repellent: 0.2 to 0.7 portion.
Preferably, the mass ratio of the liquid material component to the powder material component is 1: (2-5).
Preferably, the glass sand is 70-140 meshes, and the glass powder is 200 meshes.
Preferably, the water reducing agent is one or more of a polycarboxylic acid water reducing agent and a naphthalene water reducing agent.
Preferably, the stabilizer is one or more of hydroxypropyl methylcellulose, welan gum, xanthan gum, and a rheological agent.
Preferably, the set control agent comprises an early strength agent, a coagulant and a retarder, and the mass ratio of the early strength agent to the coagulant to the retarder is (2-3): (3-4): (3-5).
The invention also provides a preparation method of the waterproof mortar, which is characterized in that the liquid material component and the powder material component are mixed and stirred uniformly; wherein, the weight portion of the raw materials is counted,
the liquid material comprises the following components:
styrene-acrylate copolymer emulsion: 20-50 parts of a solvent;
vinyl acetate-ethylene copolymer: 10-40 parts;
10-20 parts of workability improver;
film-forming auxiliary agent: 1-5 parts;
defoaming agent: 0.3-0.9 part;
water: 15-60 parts;
the powder material comprises the following components:
portland cement: 10-40 parts;
aluminate cement: 5-40 parts;
gypsum: 5-17 parts;
glass sand: 25-50 parts;
glass powder: 5-15 parts of a solvent;
water reducing agent: 0.1-0.5 part;
a stabilizer: 0.05-0.3 part;
and (3) setting control agent: 0.05-0.5 part;
fiber: 0.1 to 1 portion.
The invention also provides application of the waterproof mortar in polymer cement-based materials.
The waterproof mortar provided by the embodiment of the invention has the following beneficial effects: compared with the prior art, the invention adopts the waterproof mortar prepared by the components and adopts the regenerated glass materials such as glass powder, glass sand and the like, thereby greatly reducing the cost of the waterproof mortar, meanwhile, the matching of other components, the glass sand and the glass powder in the invention makes up the defects of poor mortar cohesiveness, long setting time, low strength and high bleeding amount caused by smooth surface appearance of the glass powder and the glass sand, and retains the advantages of high transparency, strong scratch resistance, stable acid and alkali resistance, chemical inertness and low expansion coefficient of the glass powder and the glass sand, namely, the waterproof mortar of the invention has better mortar cohesiveness, proper setting time, higher compression strength and rupture strength, low bleeding amount, the appearance is uniform, no precipitate exists, the scratch resistance is strong, and the paint has stable acid and alkali resistance, chemical inertness and low expansion coefficient. In addition, the performance of the waterproof mortar in a cold external environment is essentially different from the performance of the waterproof mortar in the prior art which is ensured by not adding a coagulation regulator in a ternary gel material system comprising portland cement, aluminate cement and gypsum.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The experimental procedures in the following examples are conventional unless otherwise specified. Test materials, reagents and the like used in the following examples are commercially available unless otherwise specified. In the quantitative tests in the following examples, three replicates were set, and the data are the mean or the mean ± standard deviation of the three replicates.
In addition, "and/or" in the whole text includes three schemes, taking a and/or B as an example, including a technical scheme, and a technical scheme that a and B meet simultaneously; in addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The embodiment of the invention provides waterproof mortar, which comprises a liquid material component and a powder material component, wherein the liquid material component and the powder material component are counted by weight,
the liquid material comprises the following components:
styrene-acrylate copolymer emulsion: 20-50 parts of a solvent;
vinyl acetate-ethylene copolymer: 10-40 parts;
10-20 parts of workability improver;
film-forming auxiliary agent: 1-5 parts;
defoaming agent: 0.3-0.9 part;
water: 15-60 parts;
the powder material comprises the following components:
portland cement: 10-40 parts;
aluminate cement: 5-40 parts;
gypsum: 5-17 parts;
glass sand: 25-50 parts;
glass powder: 5-15 parts of a solvent;
water reducing agent: 0.1-0.5 part;
a stabilizer: 0.05-0.3 part;
and (3) setting control agent: 0.05-0.5 part;
fiber: 0.1 to 1 portion.
Compared with the prior art, the waterproof mortar prepared by matching the components adopts the glass powder, the glass sand and other regenerated glass materials, greatly reduces the cost of the waterproof mortar, meanwhile, the matching of other components, the glass sand and the glass powder in the invention makes up the defects of poor mortar cohesiveness, long setting time, low strength and high bleeding amount caused by smooth surface appearance of the glass powder and the glass sand, and retains the advantages of high transparency, strong scratch resistance, stable acid and alkali resistance, chemical inertness and low expansion coefficient of the glass powder and the glass sand, namely, the waterproof mortar of the invention has better mortar cohesiveness, proper setting time, higher compression strength and rupture strength, low bleeding amount, the appearance is uniform, no precipitate exists, the scratch resistance is strong, and the paint has stable acid and alkali resistance, chemical inertness and low expansion coefficient. In addition, the performance of the waterproof mortar in a cold external environment is essentially different from the performance of the waterproof mortar in the prior art which is ensured by not adding a coagulation regulator in a ternary gel material system comprising portland cement, aluminate cement and gypsum.
In some embodiments, the liquid feed component further comprises a preservative: 0.5-1.5 parts of the waterproof mortar, so as to inhibit the growth of microorganisms such as bacteria, mold and the like in the storage process of the waterproof mortar.
In some embodiments, the powder component further comprises at least one of: granulating blast furnace slag powder: 3-10 parts; calcite powder: 5-10 parts; water repellent: 0.2-0.7 part, so that the waterproof mortar has more excellent strength and seepage pressure resistance.
Specifically, the powder components include granulated blast furnace slag powder: 3-10 parts; calcite powder: 5-10 parts; water repellent: 0.2 to 0.7 portion.
In some embodiments, the water repellent is one or more of higher fatty acid, zinc stearate and organosilane, and the one or more of higher fatty acid, zinc stearate and organosilane react with hydroxyl groups in hydration products of ordinary portland cement and aluminate cement in a waterproof mortar system irreversibly to form chemical combination, so that the pore surfaces of the waterproof mortar obtain water repellency, and the permeation resistance pressure of the waterproof mortar is improved.
In some embodiments, the preservative is a triterpenoid, which provides a growth environment for microbes such as bacteria and mold due to the presence of organic matters in the waterproof mortar, and can inhibit the growth of the microbes such as bacteria and mold during storage of the waterproof mortar, and the triterpenoid can inhibit the normal growth metabolism of the microbes by solidifying and deforming proteins in the microbes, so that the microbes cannot grow and propagate in the waterproof mortar, and the storage life of the waterproof mortar is prolonged.
In some embodiments, the mass ratio of the liquid component to the powder component is 1: (2-5) to make the waterproof mortar have more excellent performance.
In some embodiments, the glass sand is 70-140 meshes to play a role of framework filling, and the glass powder is 200 meshes to form good gradation by matching with the glass sand, so that the compactness of the waterproof mortar is improved.
In some embodiments, the water reducing agent is one or more of a polycarboxylic acid water reducing agent and a naphthalene water reducing agent, so as to enhance the dispersibility of the components in the waterproof mortar, improve the workability of the waterproof mortar, reduce the water consumption of the waterproof mortar and improve the strength of the waterproof mortar.
In some embodiments, the stabilizer is one or more of hydroxypropyl methylcellulose, welan gum, xanthan gum, and rheological agents to improve the viscosity and rheological properties of the waterproof mortar, to increase the stability of the mortar to heat, salt, and acid and base, and to reduce bleeding of the mortar.
Specifically, when the stabilizer comprises hydroxypropylmethylcellulose, the viscosity of the hydroxypropylmethylcellulose is 8000.
In some embodiments, the set control agent comprises an early strength agent, a setting accelerator and a setting retarder, and the mass ratio of the early strength agent to the setting accelerator to the setting retarder is (2-3): (3-4): (3-5) adjusting the setting time of the waterproof mortar, preventing the waterproof mortar from quick setting or super-delayed setting, and exciting the strength of the waterproof mortar.
Specifically, the early strength agent is one or more of sodium nitrite, triisopropanolamine and a crystal nucleus nano reinforcing agent; the coagulant is one or more of calcium fluoroaluminate, lithium carbonate and potassium silicate; the retarder is one or more of tartaric acid, sodium gluconate, citric acid and sodium hexametaphosphate.
In some embodiments, the fiber is a mixture of basalt mineral fiber and polypropylene fiber to inhibit the occurrence and extension of cracks of the waterproof mortar, reduce water separation and aggregate settlement on the surface of the waterproof mortar, greatly reduce the content of micro pores in the mortar, and effectively improve the impermeability, compactness, system viscosity and strength of the waterproof mortar.
Specifically, the fibers comprise, by weight, 50-90 parts of basalt mineral fibers and 10-50 parts of polypropylene fibers.
In some embodiments, the workability improving agent is a polyacrylic acid sodium salt derivative, and the polyacrylic acid sodium salt derivative can introduce a large amount of micro continuous stable closed spherical bubbles into a waterproof mortar system on the premise of ensuring the strength of the waterproof mortar, so that the water retention property and the cohesiveness of the waterproof mortar are improved, and the adsorption of glass powder and glass sand or calcite powder in the waterproof mortar components on other components in the waterproof mortar is resisted, so that the workability and the working performance of the waterproof mortar are improved.
In some embodiments, the film forming aid is one or more of propylene glycol butyl ether and propylene glycol methyl ether acetate, so as to promote plastic flow and elastic deformation of the liquid material component in the waterproof mortar system, improve coalescence of the waterproof mortar, and ensure that the liquid material component can form a film in a wide range of external environment temperatures.
In some embodiments, the defoaming agent is a polysiloxane organic matter, and in the preparation process of the waterproof mortar, harmful bubbles may be generated, the polysiloxane organic matter can destroy an elastic membrane of the harmful bubbles in the waterproof mortar, and inhibit the generation of the harmful bubbles, the polysiloxane organic matter can capture hydrophobic chain ends on the surfaces of the harmful bubbles after contacting the harmful bubbles, then quickly spreads to form a very thin double-membrane layer, further diffuses and invades the harmful bubbles in a layered manner, replaces the elastic membrane wall of the original harmful bubbles, and breaks the mechanical balance of the elastic membrane of the harmful bubbles under the strong traction of the double-membrane layer with large peripheral surface tension to achieve the effects of destroying the harmful bubbles and inhibiting the generation of the harmful bubbles, thereby improving the strength and the impermeability of the waterproof mortar.
The invention also provides a preparation method of the waterproof mortar, which comprises the steps of mixing and stirring the liquid material component and the powder material component uniformly; wherein the content of the first and second substances,
the liquid material comprises the following components:
styrene-acrylate copolymer emulsion: 20-50 parts of a solvent;
vinyl acetate-ethylene copolymer: 10-40 parts;
10-20 parts of workability improver;
film-forming auxiliary agent: 1-5 parts;
defoaming agent: 0.3-0.9 part;
water: 15-60 parts;
the powder material comprises the following components:
portland cement: 10-40 parts;
aluminate cement: 5-40 parts;
gypsum: 5-17 parts;
glass sand: 25-50 parts;
glass powder: 5-15 parts of a solvent;
water reducing agent: 0.1-0.5 part;
a stabilizer: 0.05-0.3 part;
and (3) setting control agent: 0.05-0.5 part;
fiber: 0.1 to 1 portion.
Compared with the prior art, the preparation method of the waterproof mortar has the advantages that the waterproof mortar which has better mortar cohesiveness, proper setting time, higher compression strength and breaking strength, low bleeding amount, uniform appearance, no precipitation and strong scratch resistance is obtained by uniformly stirring and mixing the liquid material component and the powder material component, and the waterproof mortar has essential difference from the prior art in performance of the waterproof mortar in cold external environment by not adding the setting regulator in a ternary gel material system comprising silicate cement, aluminate cement and gypsum.
In some embodiments, the liquid feed component further comprises a preservative: 0.5-1.5 parts of the waterproof mortar, so as to inhibit the growth of microorganisms such as bacteria, mold and the like in the storage process of the waterproof mortar.
In some embodiments, the powder component further comprises at least one of: granulating blast furnace slag powder: 3-10 parts; calcite powder: 5-10 parts; water repellent: 0.2-0.7 part, so that the waterproof mortar has more excellent strength and seepage pressure resistance.
Specifically, the powder component further comprises granulated blast furnace slag powder: 3-10 parts; calcite powder: 5-10 parts; water repellent: 0.2 to 0.7 portion.
The invention also provides application of the waterproof mortar in polymer cement-based materials.
The waterproof mortar of the present invention will be described below with reference to specific examples, and the raw materials in the examples are all commercially available products unless otherwise specified.
Example 1
The liquid material component and the powder material component of the waterproof mortar are prepared according to the following proportion,
liquid material components: 500g of styrene-acrylate copolymer emulsion, 100g of vinyl acetate-ethylene copolymer emulsion, 100g of polyacrylic acid sodium salt derivative, 5g of triterpenoid, 50g of propylene glycol butyl ether, 9g of polysiloxane organic matter and 236g of water;
the powder components: 150g of ordinary portland cement, 300g of aluminate cement, 80g of gypsum, 30g of granulated blast furnace slag powder, (70-140) mesh glass sand 280g, 120g of 200 mesh glass powder, 40g of calcite powder, 4g of naphthalene water reducer, 5g of higher fatty acid, 0.7g of hydroxypropyl methyl cellulose (8000 viscosity), 0.3g of welan gum, 0.3g of potassium silicate, 0.3g of crystal nucleus nano reinforcing agent, 0.1g of sodium gluconate, 1g of basalt mineral fiber and 1.5g of polypropylene fiber;
and respectively mixing and stirring 500g of liquid material component and 1000g of powder material component uniformly to obtain the waterproof mortar.
Example 2
The liquid material component and the powder material component of the waterproof mortar are prepared according to the following proportion,
liquid material components: 450g of styrene-acrylate copolymer emulsion, 120g of vinyl acetate-ethylene copolymer emulsion, 130g of polyacrylic acid sodium salt derivative, 6g of triterpenoid, 40g of propylene glycol butyl ether, 8g of polysiloxane organic matter and 246g of water;
the powder components: 200g of ordinary portland cement, 250g of aluminate cement, 70g of gypsum, 40g of granulated blast furnace slag powder, 300g of (70-140) -mesh glass sand, 100g of 200-mesh glass powder, 40g of calcite powder, 4g of naphthalene water reducing agent, 5g of zinc stearate, 0.7g of hydroxypropyl methyl cellulose (8000 viscosity), 0.3g of welan gum, 0.2g of potassium silicate, 0.3g of crystal nucleus nano reinforcing agent, 0.2g of sodium hexametaphosphate, 1g of basalt mineral fiber and 1.5g of polypropylene fiber;
and respectively taking 400g of liquid material component and 1000g of powder material component, and uniformly mixing and stirring to obtain the waterproof mortar.
Example 3
The liquid material component and the powder material component of the waterproof mortar are prepared according to the following proportion,
liquid material components: 400g of styrene-acrylate copolymer emulsion, 150g of vinyl acetate-ethylene copolymer emulsion, 150g of polyacrylic acid sodium salt derivative, 7g of triterpenoid, 30g of propylene glycol butyl ether, 7g of polysiloxane organic matter and 256g of water;
the powder components: 250g of ordinary portland cement, 200g of aluminate cement, 70g of gypsum, 40g of granulated blast furnace slag powder, (310 g of glass sand of 70-140) meshes, 90g of glass powder of 200 meshes, 40g of calcite powder, 4g of naphthalene water reducing agent, 5g of organosilane, 0.7g of hydroxypropyl methyl cellulose (8000 viscosity), 0.3g of xanthan gum, 0.3g of calcium fluoroaluminate, 0.3g of sodium nitrite, 0.2g of tartaric acid, 1g of basalt mineral fiber and 1g of polypropylene fiber;
and respectively taking 334g of liquid material component and 1000g of powder material component, and uniformly mixing and stirring to obtain the waterproof mortar.
Example 4
The liquid material component and the powder material component of the waterproof mortar are prepared according to the following proportion,
liquid material components: 350g of styrene-acrylate copolymer emulsion, 200g of vinyl acetate-ethylene copolymer emulsion, 150g of polyacrylic acid sodium salt derivative, 7g of triterpenoid, 30g of propylene glycol methyl ether acetate, 7g of polysiloxane organic matter and 256g of water;
the powder components: 240g of ordinary portland cement, 210g of aluminate cement, 70g of gypsum, 40g of granulated blast furnace slag powder, 320g of (70-140) -mesh glass sand, 80g of 200-mesh glass powder, 40g of calcite powder, 4g of polycarboxylic acid water reducing agent, 5g of higher fatty acid, 0.7g of hydroxypropyl methyl cellulose (8000 viscosity), 0.2g of xanthan gum, 0.1g of rheological agent, 0.2g of calcium fluoroaluminate, 0.1g of lithium carbonate, 0.2g of nanocrystal core reinforcing agent, 0.1g of triisopropanolamine, 0.2g of tartaric acid, 1.2g of basalt mineral fiber and 0.8g of polypropylene fiber.
And respectively taking 334g of liquid material component and 1000g of powder material component, and uniformly mixing and stirring to obtain the waterproof mortar.
Example 5
The liquid material component and the powder material component of the waterproof mortar are prepared according to the following proportion,
liquid material components: 300g of styrene-acrylate copolymer emulsion, 300g of vinyl acetate-ethylene copolymer emulsion, 110g of polyacrylic acid sodium salt derivative, 8g of triterpenoid, 20g of propylene glycol methyl ether acetate, 5g of polysiloxane organic matter and 257g of water;
the powder components: 300g of ordinary portland cement, 150g of aluminate cement, 60g of gypsum, 40g of granulated blast furnace slag powder, 300g of (70-140) -mesh glass sand, 120g of 200-mesh glass powder, 30g of calcite powder, 4g of polycarboxylic acid water reducing agent, 5g of organosilane, 0.7g of hydroxypropyl methyl cellulose (8000 viscosity), 0.2g of xanthan gum, 0.2g of lithium carbonate, 0.3g of triisopropanolamine, 0.3g of tartaric acid, 1.4g of basalt mineral fiber and 0.6g of polypropylene fiber.
Respectively taking 285g of liquid material component and 1000g of powder material component, and uniformly mixing and stirring to obtain the waterproof mortar.
Example 6
The liquid component and the powder component of the waterproof mortar are prepared according to the following proportion, wherein
Liquid material components: 200g of styrene-acrylate copolymer emulsion, 400g of vinyl acetate-ethylene copolymer emulsion, 110g of polyacrylic acid sodium salt derivative, 9g of triterpenoid, 10g of propylene glycol methyl ether acetate, 3g of polysiloxane organic matter and 268g of water;
the powder components: 350g of ordinary portland cement, 100g of aluminate cement, 50g of gypsum, 50g of granulated blast furnace slag powder, (70-140) mesh glass sand 330g, 90g of 200 mesh glass powder, 30g of calcite powder, 4g of polycarboxylic acid water reducing agent, 5g of zinc stearate, 0.7g of hydroxypropyl methyl cellulose (8000 viscosity), 0.3g of rheological agent, 0.1g of lithium carbonate, 0.2g of triisopropanolamine, 0.2g of citric acid, 0.2g of sodium gluconate, 1.6g of basalt mineral fiber and 0.4g of polypropylene fiber;
respectively taking 250g of liquid material and 1000g of powder material, and uniformly mixing and stirring to obtain the waterproof mortar.
Performance evaluation
Example 1 was conducted at 0 ℃, example 2 at 10 ℃, examples 3-4 at 20 ℃, example 5 at 30 ℃ and example 6 at 40 ℃ in accordance with the relevant provisions of the national standard JC/T984 Polymer Cement waterproof mortar; and the appearance, setting time, and impervious pressure, compressive strength, flexural strength, and adhesive strength of the waterproof mortar and the commercially available waterproof mortar 1-2 in examples 1-6 were measured in the environment of 0 deg.C (Table 1), 10 deg.C (Table 2), 20 deg.C (Table 3 and Table 4), 30 deg.C (Table 5), and 40 deg.C (Table 6), respectively, corresponding to examples 1-6, of the commercially available waterproof mortar 1-2, and the results are shown in tables 1-6, where the appearance control values specified in national standard JC/T984 Polymer Cement waterproof mortar are that liquid is uniform and no precipitate, and powder is uniform and no cake; the setting time control value is that the initial setting is more than or equal to 45min, and the final setting is less than or equal to 24 h; when the time is 7 days, the control value of the seepage resistance pressure of the mortar test piece is more than or equal to 0.8MPa, and when the time is 28 days, the control value of the seepage resistance pressure of the mortar test piece is more than or equal to 1.5 MPa; the control value of the compressive strength is more than or equal to 18MPa, and the control value of the flexural strength is more than or equal to 6 MPa; the control value of the bonding strength is more than or equal to 0.8MPa when the time is 7 days, and the control value of the bonding strength is more than or equal to 1.0MPa when the time is 28 days.
In addition, the invention respectively carries out a plurality of times of detection on the commercially available waterproof mortar 1-2, and averages the detection result to find that the workability, bleeding amount and mortar viscosity of the commercially available waterproof mortar 1-2 are basically in the following ranges (1): good, slow loss; (2) bleeding amount: less than or equal to 10.0 g; (3) mortar viscosity: (2500-4000) mPa · s; therefore, the invention takes the measured value as the control value of three measurement indexes of workability, bleeding amount and mortar viscosity, and the temperature of the sample 1 in the invention is 0 ℃, the temperature of the sample 2 is 10 ℃, the temperature of the samples 3-4 is 20 ℃, the temperature of the sample 5 is 30 ℃ and the temperature of the sample 6 is 40 ℃; and the workability, bleeding amount and mortar viscosity of the waterproof mortar in examples 1-6 and commercial waterproof mortar 1-2 were tested under the environment of 0 deg.C (Table 1), 10 deg.C (Table 2), 20 deg.C (Table 3 and Table 4), 30 deg.C (Table 5) and 40 deg.C (Table 6) respectively corresponding to examples 1-6, and compared with commercial waterproof mortar 1-2, wherein commercial products 1-2 in tables 3 and 4 were experimental tests conducted under the external environment of 20 deg.C, and the experimental results are shown in tables 1-6, because the experimental data of commercial products 1-2 are slightly different due to the allowable errors in two experiments, but the evaluation of the overall performance of the waterproof mortar is not affected.
Table 1 example 1 experimental data
Table 2 example 2 experimental data
Table 3 example 3 experimental data
Table 4 example 4 experimental data
Table 5 example 5 experimental data
Table 6 example 6 experimental data
As can be seen from tables 1-6, the appearance, setting time, seepage resistance pressure, compressive strength, flexural strength and bonding strength of the waterproof mortar are superior to the control values of the appearance, setting time, seepage resistance pressure, compressive strength, flexural strength and bonding strength of the mortar test piece in the relevant regulations of national standard JC/T984 Polymer Cement waterproof mortar; the workability of the waterproof mortar is the same as the control value obtained by the commercial waterproof mortar product, and the bleeding quantity and the viscosity of the waterproof mortar are superior to the control value obtained by the commercial waterproof mortar product;
in addition, the invention also takes two commercially available waterproof mortars 1-2 in the market as a contrast, and as can be seen from tables 1-6, the appearance, the setting time, the seepage resistance pressure, the compression resistance strength, the breaking resistance strength, the bonding strength, the workability, the bleeding amount and the viscosity of the waterproof mortar are all better than those of the commercially available waterproof mortars 1-2.
In addition, as the commercially available waterproof mortar 1-2 is tested under the environment of 0 ℃, 10 ℃, 20 ℃, 30 ℃ and 40 ℃, the test piece of the commercially available waterproof mortar 1-2 can not reach the relevant regulation of JC/T984 polymer cement waterproof mortar and the bleeding amount reaches 10.3g from the table 1, which shows that the performance of the commercially available waterproof mortar 1-2 is affected when the external environment is 0 ℃, the conclusion can be obtained from the experimental results of the commercially available waterproof mortar 1-2 in the tables 1-6, and from the tables 1 to 6, the test piece of the commercially available waterproof mortar 1-2 can reach the relevant regulation of JC/T984 polymer cement waterproof mortar after the temperature is relatively increased, and in addition, as the temperature is relatively increased, the bleeding amount of the commercially available waterproof mortar 1-2 is generally in a descending trend, and when the external environment reaches 40 ℃, the bleeding amount of the commercially available waterproof mortar 1-2 is 0; although the viscosity of the commercially available waterproof mortar 1-2 is within the control value range, the viscosity of the commercially available waterproof mortar 1-2 changes in a large range at different external environmental temperatures, i.e., in different seasons, which may have a certain influence on building construction. Therefore, the various performances of the commercial waterproof mortar are influenced by the external environment temperature to a certain extent.
However, in the present invention, the performance test of examples 1 to 6 was carried out at an ambient temperature of 0 to 40 ℃ to substantially simulate the ambient temperature of the waterproof mortar at all seasons in practical use, and it can be seen from tables 1 to 6 that the appearance, setting time, and seepage pressure, compressive strength, flexural strength and adhesive strength of the waterproof mortar prepared from the above-mentioned components in the present invention at an ambient temperature of 0 to 40 ℃ are superior to the control values of the appearance, setting time, seepage pressure, compressive strength, flexural strength and adhesive strength of the mortar specimen in the relevant regulations of national standard JC/T984 "Polymer Cement waterproof mortar". The waterproof mortar prepared from the components has good workability, bleeding amount, viscosity and other properties at the external environment temperature of 0-40 ℃, and the change trend is not very obvious at different external environment temperatures, so that the performances of the waterproof mortar can be obtained without being influenced by the external environment temperature.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the present specification and directly/indirectly applied to other related technical fields within the spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. The waterproof mortar is characterized by comprising a liquid material component and a powder material component in parts by weight,
the liquid material comprises the following components:
styrene-acrylate copolymer emulsion: 20-50 parts of a solvent;
vinyl acetate-ethylene copolymer: 10-40 parts;
10-20 parts of workability improver;
film-forming auxiliary agent: 1-5 parts;
defoaming agent: 0.3-0.9 part;
water: 15-60 parts;
the powder material comprises the following components:
portland cement: 10-40 parts;
aluminate cement: 5-40 parts;
gypsum: 5-17 parts;
glass sand: 25-50 parts;
glass powder: 5-15 parts of a solvent;
water reducing agent: 0.1-0.5 part;
a stabilizer: 0.05-0.3 part;
and (3) setting control agent: 0.05-0.5 part;
fiber: 0.1 to 1 portion.
2. The waterproof mortar of claim 1, wherein the liquid component further comprises, in parts by weight: 0.5 to 1.5 portions.
3. The waterproof mortar of claim 1, wherein the powder component further comprises at least one of the following in parts by weight:
granulating blast furnace slag powder: 3-10 parts;
calcite powder: 5-10 parts;
water repellent: 0.2 to 0.7 portion.
4. The waterproof mortar of claim 1, wherein the mass ratio of the liquid component to the powder component is 1: (2-5).
5. The waterproof mortar of claim 1, wherein the glass sand is 70-140 mesh and the glass powder is 200 mesh.
6. The waterproof mortar of claim 1, wherein the water reducing agent is one or more of a polycarboxylic acid water reducing agent and a naphthalene water reducing agent.
7. The waterproof mortar of claim 1, wherein the stabilizer is one or more of hydroxypropyl methylcellulose, welan gum, xanthan gum, and rheological agents.
8. The waterproof mortar of claim 1, wherein the set control agent comprises an early strength agent, a set accelerator and a set retarder, and the mass ratio of the early strength agent to the set accelerator to the set retarder is (2-3): (3-4): (3-5).
9. The preparation method of the waterproof mortar is characterized in that a liquid material component and a powder material component are mixed and stirred uniformly; wherein, the weight portion of the raw materials is counted,
the liquid material comprises the following components:
styrene-acrylate copolymer emulsion: 20-50 parts of a solvent;
vinyl acetate-ethylene copolymer: 10-40 parts;
10-20 parts of workability improver;
film-forming auxiliary agent: 1-5 parts;
defoaming agent: 0.3-0.9 part;
water: 15-60 parts;
the powder material comprises the following components:
portland cement: 10-40 parts;
aluminate cement: 5-40 parts;
gypsum: 5-17 parts;
glass sand: 25-50 parts;
glass powder: 5-15 parts of a solvent;
water reducing agent: 0.1-0.5 part;
a stabilizer: 0.05-0.3 part;
and (3) setting control agent: 0.05-0.5 part;
fiber: 0.1 to 1 portion.
10. Use of a waterproofing mortar according to claim 1 in polymer cement based materials.
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| CN113480220A (en) * | 2021-08-11 | 2021-10-08 | 海南丰业实业有限公司 | Fabricated building material concrete composite additive and concrete thereof |
| CN113929399A (en) * | 2021-11-11 | 2022-01-14 | 科之杰新材料集团福建有限公司 | Interface mortar and application thereof |
| CN114031345A (en) * | 2021-11-11 | 2022-02-11 | 科之杰新材料集团福建有限公司 | Mechanical spraying plastering mortar and application thereof |
| EP4082987A1 (en) * | 2021-04-29 | 2022-11-02 | Henkel AG & Co. KGaA | Method of applying a cementiitious composition |
| EP4082986A1 (en) * | 2021-04-29 | 2022-11-02 | Henkel AG & Co. KGaA | One component cementitious composition |
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| CN113929399A (en) * | 2021-11-11 | 2022-01-14 | 科之杰新材料集团福建有限公司 | Interface mortar and application thereof |
| CN114031345A (en) * | 2021-11-11 | 2022-02-11 | 科之杰新材料集团福建有限公司 | Mechanical spraying plastering mortar and application thereof |
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| CN112624715B (en) | 2022-06-24 |
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