CN110627454A - Polymer cement waterproof mortar and preparation method thereof - Google Patents
Polymer cement waterproof mortar and preparation method thereof Download PDFInfo
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- CN110627454A CN110627454A CN201911069812.0A CN201911069812A CN110627454A CN 110627454 A CN110627454 A CN 110627454A CN 201911069812 A CN201911069812 A CN 201911069812A CN 110627454 A CN110627454 A CN 110627454A
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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
- C04B28/02—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
- C04B28/04—Portland 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
-
- 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
- C04B2111/23—Acid resistance, e.g. against acid air or rain
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
-
- 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
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 invention provides polymer cement waterproof mortar which comprises the following components in parts by weight: 30-40 parts of cement, 10-20 parts of fly ash, 40-60 parts of building fine sand, 0.05-0.15 part of hydroxymethyl cellulose ether, 1-3 parts of calcium stearate, 2-4 parts of latex powder, 0.1-0.3 part of lignin fiber, 0.05-0.15 part of defoaming agent and 0.4-0.6 part of hydrophobic agent, and has excellent waterproof performance.
Description
Technical Field
The invention relates to polymer cement waterproof mortar and a preparation method thereof, belonging to the technical field of mortar.
Background
In places such as swimming pools, bathrooms, toilets and the like, and in rainy areas in the south, the wall surfaces of buildings are often mildewed or damaged due to water absorption of the wall surfaces, and waterproof layers are needed for protection. The polymer cement waterproof mortar is a waterproof material prepared by mixing cement and fine aggregate serving as main raw materials, polymer, additives and the like serving as modified materials in a proper proportion, and is commonly used as a waterproof layer.
However, the waterproof performance of the existing polymer cement waterproof mortar is still not ideal enough, and the polymer cement waterproof mortar with better waterproof performance needs to be developed.
Disclosure of Invention
The present invention provides a solution to the above problems.
The invention is realized by the following steps:
a polymer cement waterproof mortar comprises the following components in percentage by weight: 30-40 parts of cement, 10-20 parts of fly ash, 40-60 parts of building fine sand, 0.05-0.15 part of hydroxymethyl cellulose ether, 1-3 parts of calcium stearate, 2-4 parts of latex powder, 0.1-0.3 part of lignin fiber, 0.05-0.15 part of defoaming agent and 0.4-0.6 part of hydrophobic agent.
As a further improvement, the cement is portland cement. The Portland cement is used as a main gelling agent to ensure the compressive strength and the breaking strength of the polymer cement waterproof mortar.
As a further improvement, the fly ash is class II fly ash. The fly ash is used as an auxiliary gelling agent and is matched with portland cement to enhance the bonding strength of the polymer cement waterproof mortar, so that the molding and construction of the mortar are facilitated. The fly ash can also be I fly ash, but not limited to.
As a further improvement, the building fine sand is 40-100 mesh grade sand. The building fine sand is used as a main framework material, so that the compressive strength of the polymer cement waterproof mortar is ensured.
As a further improvement, the latex powder is a re-dispersible latex powder.
As a further improvement, the defoaming agent is polydimethylsiloxane or polyoxypropylene glycerol ether. The defoaming agent can eliminate bubbles generated in the preparation process of the polymer cement waterproof agent mortar, so that the polymer cement waterproof agent mortar has no hollow core, and the breaking strength is enhanced.
As a further improvement, the hydrophobizing agent is an organosilicon hydrophobizing agent. The organosilicon hydrophobic agent not only improves the waterproofness of the polymer cement waterproof mortar, but also can play the roles of a retarder, a water reducing agent and a reinforcing agent. The organosilicon hydrophobic agent and calcium stearate act to form a high-molecular reticular silicone resin film, so that the waterproofness of the polymer cement waterproof mortar is greatly enhanced, and the polymer cement waterproof mortar has the characteristics of long service life, acid and alkali resistance, pollution prevention, weathering prevention, no corrosion to reinforcing steel bars, expansion effect, capability of compensating the contractibility of mortar and concrete and the like.
As a further improvement, the polymer cement waterproof mortar also comprises 3-5 parts of chlorinated paraffin. The chlorinated paraffin serves as a plasticizer and has waterproofness, so that the bonding strength of the polymer cement waterproof mortar can be enhanced, and the chlorinated paraffin can play a synergistic role with an organosilicon hydrophobic agent and calcium stearate, so that the waterproofness of the polymer cement waterproof mortar is further improved.
The preparation method of the polymer cement waterproof mortar comprises the following steps:
s1, weighing cement, fly ash and building fine sand according to the proportion, mixing the weighed cement, fly ash and building fine sand accounting for 70-80% of the weighed weight of the whole building fine sand, and uniformly stirring in a stirrer to obtain premix A;
s2: weighing hydroxymethyl cellulose ether, emulsion powder, lignin fiber, a defoaming agent, a water repellent agent and calcium stearate according to a ratio, mixing the weighed hydroxypropyl methyl cellulose ether, emulsion powder, lignin fiber, defoaming agent, water repellent agent and calcium stearate, adding the mixture into the premix A in the step S1, and uniformly stirring the mixture in a stirrer to obtain a premix B;
s3: and (4) adding the residual building fine sand in the step (S1) into the premix B, and uniformly stirring in a stirrer to obtain the special plastering mortar for aerated concrete.
In a further improvement, in step S2, 3 to 5 parts of chlorinated paraffin is further added and mixed with other raw materials, and then the mixture is stirred uniformly in a stirrer.
In a further improvement, in the step S1, the stirring time of the stirring is 50 to 80S, in the step S2, the stirring time of the stirring is 60 to 120S, and the stirring time of the stirring is 3 to 5 min.
In the method, in the step S1, the main materials are fully and uniformly mixed, then the main materials and the auxiliary materials in the step S2 are interacted, and finally the residual fine building sand is added, so that the defect that the mortar is poor in bonding performance due to uneven mixing and caking of the main materials is avoided, and the bonding performance and the compressive strength of the mortar are improved. The stirring time of each step is also critical, the stirring time in the step S1 is 50-80S, the stirring time in the step S2 is 60-120S, if the stirring time is too short, the stirring is not uniform, the adhesive property of the mortar can be reduced, if the stirring time is too long, the main material and the auxiliary material are mixed and then are dried and hardened, the interaction between the auxiliary material and the main material in the subsequent steps is not facilitated, and the performances of the mortar such as water retention property, adhesive property, compressive strength and the like are difficult to guarantee.
The invention has the beneficial effects that:
1. the polymer cement waterproof mortar contains the organic silicon hydrophobic agent and calcium stearate, and the organic silicon hydrophobic agent and the calcium stearate act to form a high-molecular reticular silicon resin film to play a dual waterproof role, so that the polymer cement waterproof mortar has excellent waterproof performance.
2. The polymer cement waterproof mortar also contains chlorinated paraffin which is used as a plasticizer and has waterproofness, so that the bonding strength of the polymer cement waterproof mortar can be enhanced, and the chlorinated paraffin can play a synergistic effect with an organosilicon hydrophobic agent and calcium stearate, so that the waterproofness of the polymer cement waterproof mortar is further improved.
3. The polymer cement waterproof mortar disclosed by the invention has the advantages that the compressive strength, the breaking strength and the bonding strength reach the national standards, and the polymer cement waterproof mortar has good crack resistance and structural deformation resistance.
4. The organosilicon hydrophobic agent, the calcium stearate and the chlorinated paraffin in the polymer cement waterproof mortar are matched with other raw materials to play a synergistic effect, so that the polymer cement waterproof mortar has the advantages of acid resistance, corrosion resistance, greenness and environmental protection.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of embodiments of the invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example 1
S1, weighing 35kg of cement, 15kg of fly ash and 50kg of building fine sand, mixing the weighed cement, fly ash and 37.5kg of building fine sand, and stirring for 60S by using a dry powder mortar stirrer to obtain premix A;
s2: weighing 0.1kg of hydroxymethyl cellulose ether, 3kg of subdividable emulsion powder, 0.2kg of lignin fiber, 0.1kg of polydimethylsiloxane, 0.5kg of organic silicon hydrophobing agent and 3kg of chlorinated paraffin, mixing the weighed hydroxypropyl methyl cellulose ether, subdividable emulsion powder, lignin fiber, polydimethylsiloxane, organic silicon hydrophobing agent and chlorinated paraffin, adding the mixture into the premix A in the step S1, and stirring the mixture for 60S by using a dry powder mortar stirrer to obtain a premix B;
s3: and (4) adding the residual building fine sand in the step (S1) into the premix B, and stirring for 3 minutes by using a dry powder mortar stirrer to obtain the dry powder polymer cement waterproof mortar.
Example 2
S1, weighing 30kg of cement, 10kg of fly ash and 40kg of fine building sand, mixing the weighed cement, fly ash and 28kg of fine building sand, and stirring for 80S by using a dry powder mortar stirrer to obtain premix A;
s2: weighing the following substances in parts by weight: 0.05kg of hydroxymethyl cellulose ether, 2kg of re-dispersible latex powder, 0.1kg of lignin fiber, 0.05kg of polyoxypropylene glycerol, 0.4kg of organic silicon hydrophobing agent and 4kg of chlorinated paraffin, wherein the weighed hydroxypropyl methyl cellulose ether, the re-dispersible latex powder, the lignin fiber, the polyoxypropylene glycerol, the organic silicon hydrophobing agent and the chlorinated paraffin are mixed and then added into the premix A in the step S1, and the mixture is stirred for 2 minutes by a dry powder mortar stirrer to obtain a premix B;
s3: and (4) adding the residual building fine sand in the step (S1) into the premix B, and stirring for 5 minutes by using a dry powder mortar stirrer to obtain the dry powder polymer cement waterproof mortar.
Example 3
S1, weighing the following substances in parts by weight: mixing 40kg of cement, 20kg of fly ash and 60kg of fine building sand, mixing the weighed cement, fly ash and 48kg of fine building sand, and stirring for 70 seconds by using a dry powder mortar stirrer to obtain premix A;
s2: weighing the following substances in parts by weight: 0.15kg of hydroxymethyl cellulose ether, 4kg of re-dispersible emulsion powder, 0.3kg of lignin fiber, 0.15kg of polydimethylsiloxane, 0.6kg of organic silicon hydrophobing agent and 5kg of chlorinated paraffin, wherein the weighed hydroxypropyl methyl cellulose ether, the re-dispersible emulsion powder, the lignin fiber, the polydimethylsiloxane, the organic silicon hydrophobing agent and the chlorinated paraffin are mixed and then added into the premix A in the step S1, and the mixture is stirred for 1.5 minutes by a dry powder mortar stirrer to obtain a premix B;
s3: and (4) adding the residual building fine sand in the step (S1) into the premix B, and stirring for 4 minutes by using a dry powder mortar stirrer to obtain the dry powder polymer cement waterproof mortar.
The use method of the polymer cement waterproof mortar comprises the following steps:
fully wetting a base surface with water before construction, and wetting without clear water; adding water with the weight of 20-23% into the polymer cement waterproof mortar, uniformly stirring, standing for 6-10min for use, and hanging 3-5mm on a cleaned base surface to serve as a waterproof layer.
The detection is carried out according to JC/T984-:
TABLE 1
As can be seen from the data in Table 1, the permeation resistance pressure (7d) of the coating test of the polymer cement waterproof mortar disclosed by the invention is as high as 0.7, which is superior to that of the polymer cement waterproof mortar in the market, so that the waterproof performance is excellent, and other performances such as compressive strength, flexural strength, bonding strength and the like all reach the national standard, and the polymer cement waterproof mortar has a wide application prospect.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The polymer cement waterproof mortar is characterized by comprising the following components in parts by weight: 30-40 parts of cement, 10-20 parts of fly ash, 40-60 parts of building fine sand, 0.05-0.15 part of hydroxymethyl cellulose ether, 1-3 parts of calcium stearate, 2-4 parts of latex powder, 0.1-0.3 part of lignin fiber, 0.05-0.15 part of defoaming agent and 0.4-0.6 part of hydrophobic agent.
2. The polymer cement waterproof mortar of claim 1, wherein the cement is portland cement.
3. The polymer cement waterproof mortar of claim 1, wherein the fly ash is class ii fly ash.
4. The polymer cement waterproof mortar of claim 1, wherein the building fine sand is 40-100 mesh grade sand.
5. The polymer cement waterproof mortar of claim 1, wherein the latex powder is a re-dispersible latex powder.
6. The polymer cement waterproof mortar of claim 1, wherein the defoaming agent is polydimethylsiloxane or polyoxypropylene glyceryl ether.
7. The polymer cement waterproof mortar of claim 1, wherein the hydrophobizing agent is an organosilicon hydrophobizing agent.
8. The polymer cement waterproof mortar of claim 1, further comprising 3 to 5 parts of chlorinated paraffin.
9. A method for preparing a polymer cement waterproof mortar as claimed in any one of claims 1 to 8, characterized in that: the method comprises the following steps:
s1, weighing cement, fly ash and building fine sand according to the proportion, mixing the weighed cement, fly ash and building fine sand accounting for 70-80% of the weighed weight of the whole building fine sand, and uniformly stirring in a stirrer to obtain premix A;
s2: weighing hydroxymethyl cellulose ether, emulsion powder, lignin fiber, a defoaming agent, a water repellent agent and calcium stearate according to a ratio, mixing the weighed hydroxypropyl methyl cellulose ether, emulsion powder, lignin fiber, defoaming agent, water repellent agent and calcium stearate, adding the mixture into the premix A in the step S1, and uniformly stirring the mixture in a stirrer to obtain a premix B;
s3: and (4) adding the residual building fine sand in the step (S1) into the premix B, and uniformly stirring in a stirrer to obtain the special plastering mortar for aerated concrete.
10. The preparation method of the special plastering mortar for aerated concrete according to claim 9, which is characterized by comprising the following steps: in the step S2, 3 to 5 parts of chlorinated paraffin is further added and mixed with other raw materials, and then the mixture is stirred uniformly in a stirrer.
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| CN201911069812.0A CN110627454A (en) | 2019-11-05 | 2019-11-05 | Polymer cement waterproof mortar and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111548101A (en) * | 2020-06-29 | 2020-08-18 | 广东平坦适环保材料有限公司 | Cement-based efficient permeable crystallization type waterproof material and preparation method thereof |
| CN115849831A (en) * | 2022-12-28 | 2023-03-28 | 厦门天润锦龙建材有限公司 | Artware mortar and preparation method thereof |
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| CN109020366A (en) * | 2018-08-06 | 2018-12-18 | 南通科顺建筑新材料有限公司 | A kind of waterproofing slurry and preparation method thereof that modified fibre is modified |
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| CN101704651A (en) * | 2009-10-30 | 2010-05-12 | 张敬科 | Polymer cement waterproof thermal insulation mortar |
| CN104003668A (en) * | 2014-06-13 | 2014-08-27 | 田树 | Hydrophobic fiber-reinforced calcium silicate board and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111548101A (en) * | 2020-06-29 | 2020-08-18 | 广东平坦适环保材料有限公司 | Cement-based efficient permeable crystallization type waterproof material and preparation method thereof |
| CN111548101B (en) * | 2020-06-29 | 2022-05-13 | 广东平坦适环保材料有限公司 | Cement-based efficient permeable crystallization type waterproof material and preparation method thereof |
| CN115849831A (en) * | 2022-12-28 | 2023-03-28 | 厦门天润锦龙建材有限公司 | Artware mortar and preparation method thereof |
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