CN115321921A - Polymer waterproof mortar and preparation method and application thereof - Google Patents
Polymer waterproof mortar and preparation method and application thereof Download PDFInfo
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- CN115321921A CN115321921A CN202211085910.5A CN202211085910A CN115321921A CN 115321921 A CN115321921 A CN 115321921A CN 202211085910 A CN202211085910 A CN 202211085910A CN 115321921 A CN115321921 A CN 115321921A
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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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
- C04B16/0616—Macromolecular compounds fibrous from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B16/0625—Polyalkenes, e.g. polyethylene
- C04B16/0633—Polypropylene
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/146—Silica fume
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/12—Nitrogen containing compounds organic derivatives of hydrazine
- C04B24/14—Peptides; Proteins; Derivatives thereof
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
-
- 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
-
- 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Electromagnetism (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides polymer waterproof mortar and a preparation method and application thereof, relating to the technical field of building materials and comprising the following components in parts by mass: 470-490 parts of cement, 77-85 parts of silica fume, 560-570 parts of quartz sand, 5.6-8 parts of rubber powder, 0.44-0.58 part of cellulose, 5.5-8.2 parts of additives, 1-1.8 parts of polypropylene fibers, 180-190 parts of water and 0.3-0.6 part of amylase.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to polymer waterproof mortar and a preparation method and application thereof.
Background
The cement mortar has the advantages of high compressive strength, good stability, simple construction, low cost and the like, is one of the most widely applied building materials at present, and still has some defects, such as lower breaking strength, poor bonding performance, low crack resistance and the like, so that the use function and the use range of the cement mortar are limited to a certain extent.
The traditional mortar is generally mixed in site construction, has poor impermeability, large shrinkage rate and unsatisfactory working performance, and often causes the building quality problems of painting cracking, shelling, leakage and the like.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
One of the purposes of the invention is to provide the polymer waterproof mortar which has strong bonding capability, can form a firm coating on the surface of a base material, and has the characteristics of good waterproof and anti-permeability effects, strong corrosion resistance, and good wear resistance, weather resistance and frost resistance.
The second purpose of the invention is to provide a preparation method of the polymer waterproof mortar, which has simple and high-efficiency process.
The invention also aims to provide application of the polymer waterproof mortar, which has strong bonding capability, can form a firm coating on the surface of a base material, has the effects of reinforcement protection and water resistance, has good durability and strong corrosion resistance, and has outstanding application effect.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
in a first aspect, the polymer waterproof mortar comprises the following components in parts by weight:
470 to 490 parts of cement, 77 to 85 parts of silica fume, 560 to 570 parts of quartz sand, 5.6 to 8 parts of rubber powder, 0.44 to 0.58 part of cellulose, 5.5 to 8.2 parts of admixture, 1 to 1.8 parts of polypropylene fiber, 180 to 190 parts of water and 0.3 to 0.6 part of amylase.
Further, the cement comprises portland cement.
Further, the rubber powder comprises redispersible latex powder.
Further, the cellulose includes hydroxypropyl methylcellulose.
Further, the additive comprises at least one of a water reducing agent, a defoaming agent and a water repellent;
preferably, the admixture comprises the following components in parts by weight:
1 to 1.2 parts of water reducing agent, 1.5 to 3 parts of defoaming agent and 3 to 4 parts of water repellent.
Further, the water reducing agent comprises a polycarboxylic acid high-efficiency water reducing agent;
preferably, the defoamer comprises a silicone defoamer;
preferably, the water repellent comprises an organosilicon water repellent.
Further, the polymer waterproof mortar comprises the following components in parts by weight:
480 parts of cement, 82 parts of silica fume, 5363 parts of quartz sand 564.8 parts of rubber powder, 0.56 part of cellulose, 1.12 parts of water reducing agent, 1 part of polypropylene fiber, 1.8 parts of defoaming agent, 3.4 parts of water repellent, 186 parts of water and 0.4 part of amylase.
In a second aspect, a method for preparing a polymer waterproof mortar comprises the following steps:
the polymer waterproof mortar is obtained after the components are mixed in proportion.
Further, the preparation method comprises the following steps:
mixing quartz sand, silica fume and cement, adding water, mixing, adding a water reducing agent, a defoaming agent, a water repellent, rubber powder, cellulose and amylase, mixing, adding polypropylene fiber, mixing, and maintaining to obtain the polymer waterproof mortar.
In a third aspect, a polymeric water-resistant mortar is used for a wall surface of a building.
Compared with the prior art, the invention has at least the following beneficial effects:
the polymer waterproof mortar provided by the invention has very stable chemical properties of the polypropylene fiber, can improve the performance of the mortar only by changing the physical structure of the mortar, and meanwhile, the polypropylene fiber can not absorb other substances and has no conflict with cement, silica fume, quartz sand, an additive and an admixture, so that the polypropylene fiber has good affinity with other materials in the mortar; the tensile strength of the polypropylene fiber is as high as 276MPa, so that the occurrence and development of cut-off microcracks can be prevented, the formation of fine pores is avoided, the mortar matrix is kept compact and stable, and the mortar has excellent waterproof performance, excellent toughness and stronger anti-cracking and anti-impact capabilities; in addition, the amylase can obviously increase the consistency of the mortar, improve the flowing property, increase the water retention of the mortar and prolong the opening time; meanwhile, the silica fume can not only reduce the porosity of slurry, improve the compactness of the mortar and enhance the waterproof performance of the mortar, but also improve the dispersion degree of fibers in the mortar, thereby improving the mechanical property of the mortar. Therefore, the polymer waterproof mortar provided by the invention better integrates the excellent characteristics of the organic polymer material and the inorganic material through the synergistic cooperation of the polypropylene fiber and the materials, and effectively improves the mechanical property, the waterproof property, the impact resistance, the bonding strength and the bonding capacity of the mortar.
The polymer waterproof mortar provided by the invention is simple in process and high in efficiency.
The polymer waterproof mortar provided by the invention has strong bonding capability, can form a firm coating on the surface of a base material, has the effects of reinforcement protection and water resistance, and has good durability, strong corrosion resistance and outstanding application effect.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. 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.
According to a first aspect of the invention, a polymer waterproof mortar is provided, which comprises the following components in parts by weight:
470 to 490 parts of cement, 77 to 85 parts of silica fume, 560 to 570 parts of quartz sand, 5.6 to 8 parts of rubber powder, 0.44 to 0.58 part of cellulose, 5.5 to 8.2 parts of additive, 1 to 1.8 parts of polypropylene fiber, 180 to 190 parts of water and 0.3 to 0.6 part of amylase.
In the present invention, typical but not limiting parts by mass of cement are, for example, 470 parts, 475 parts, 480 parts, 485 parts, 490 parts; typical but not limiting parts by mass of silica fume are, for example, 77 parts, 78 parts, 79 parts, 80 parts, 81 parts, 82 parts, 83 parts, 84 parts, 85 parts; typical but not limiting parts by mass of the silica sand are, for example, 560 parts, 562 parts, 564 parts, 566 parts, 568 parts, 570 parts; typical but not limiting parts by mass of the rubber powder are, for example, 5.6 parts, 6 parts, 7 parts, 8 parts; typical but not limiting mass parts of cellulose are for example 0.44 parts, 0.45 parts, 0.46 parts, 0.47 parts, 0.48 parts, 0.49 parts, 0.50 parts, 0.51 parts, 0.52 parts, 0.53 parts, 0.54 parts, 0.55 parts, 0.56 parts, 0.57 parts, 0.58 parts; typical but non-limiting mass parts of the admixture are, for example, 5.5 parts, 6.0 parts, 6.5 parts, 7.0 parts, 7.5 parts, 8.0 parts, 8.2 parts; typical but not limiting parts by mass of the polypropylene fiber are, for example, 1.0 part, 1.2 parts, 1.4 parts, 1.6 parts, 1.8 parts; typical but not limiting parts by mass of water are, for example, 180 parts, 182 parts, 184 parts, 186 parts, 188 parts, 190 parts; typical but not limiting parts by mass of the amylase are, for example, 0.3 part, 0.4 part, 0.5 part, 0.6 part.
The fiber has the advantages of convenient processing, low cost, excellent quality, chemical corrosion resistance and the like, and when the fiber is used as a reinforcing material and is doped into cement mortar, the impermeability, bending resistance and crack resistance of the mortar can be effectively improved. Therefore, after the fibers are doped into the mortar, the crack resistance of the mortar can be effectively improved, the anti-permeability and waterproof performance of the mortar is greatly improved, the impact resistance of the mortar is enhanced, and the frost resistance of the mortar is enhanced.
The polypropylene fiber in the invention is high-strength polypropylene monofilament fiber prepared from polypropylene serving as a raw material, has extremely strong acid and alkali resistance, good durability, low elastic modulus, tensile strength of 276MPa and very stable chemical property, improves the performance of mortar only by changing the physical structure of the mortar, does not absorb other substances, does not conflict with sand, cement, additives, admixtures and the like, and has good affinity with mortar materials.
The waterproof mechanism of the waterproof mortar of the invention is that a disorderly net is formed by means of the function of physical reinforcement and depending on the even disorderly distribution of a large amount of microfibers in the mortar, and is tightly combined with a cement matrix, the disorderly net forms an inner frame in the mortar to support the whole system, and effectively and firmly controls the inner frame, so that the inner frame is difficult to shrink and isolate, and meanwhile, the tensile strength of polypropylene fibers is as high as 276MPa, so that the waterproof mortar can prevent the occurrence and development of truncation microcracks, prevent the formation of pores, keep the mortar matrix compact and stable, and have excellent waterproof performance, excellent toughness and stronger crack resistance and impact resistance.
In the invention, the addition of the amylase can obviously increase the consistency of the mortar, improve the fluidity, ensure that the construction is smoother and the scraping and plastering are smoother. The proper amount of amylase added in the invention can increase the water retention of the mortar and prolong the opening time; the addition of a proper amount of amylase can improve the viscosity and is easy to put on the wall.
In the invention, the proper amount of the silica fume in the mortar can play two roles, on one hand, the active silica in the silica fume reacts with the hydration product calcium hydroxide of the cementing material to generate more calcium silicate to be filled in gaps, micro cracks and gaps of an interface transition region in the slurry, so that the porosity of the slurry is reduced, the compactness of the mortar is improved, and the waterproof performance of the mortar is enhanced; on the other hand, the dispersion degree of the polypropylene fiber in the mortar can be improved, and the mechanical property of the mortar is further improved.
Therefore, the polymer waterproof mortar provided by the invention better integrates the excellent characteristics of the organic polymer material and the inorganic material through the synergistic cooperation of the polypropylene fiber and the materials, and effectively improves the mechanical property, the waterproof property, the impact resistance, the bonding strength and the bonding capacity of the mortar; the polymer waterproof mortar product meets the II-type requirements on mechanical properties in JC/T984-2011 Polymer Cement waterproof mortar.
In a preferred embodiment, the cement includes but is not limited to portland cement, the rubber powder includes but is not limited to redispersible latex powder, the cellulose includes but is not limited to hydroxypropyl methyl cellulose, the admixture includes but is not limited to at least one of a water reducing agent, an antifoaming agent and a water repellent, which is more beneficial to improving the synergistic cooperation effect of the components in the waterproof mortar and ensuring the mechanical property, the waterproof property, the impact resistance, the bonding strength and the bonding capability of the mortar.
In a preferred embodiment, the admixture of the present invention comprises the following components in parts by mass:
1 to 1.2 parts of water reducing agent, 1.5 to 3 parts of defoaming agent and 3 to 4 parts of water repellent.
Wherein, the typical but non-limiting mass parts of the water reducing agent are 1 part, 1.1 part and 1.2 parts, the typical but non-limiting mass parts of the defoaming agent are 1.5 parts, 2 parts, 2.5 parts and 3 parts, and the typical but non-limiting mass parts of the water repellent are 3 parts, 3.5 parts and 4 parts.
In a preferred embodiment, the water reducing agent of the present invention includes, but is not limited to, a polycarboxylic acid high efficiency water reducing agent, the defoamer includes, but is not limited to, a silicone defoamer, and the water repellent includes, but is not limited to, a silicone hydrophober.
The additive components and the parts by weight thereof in the invention are more favorable for ensuring the overall performance of the polymer waterproof mortar.
In a preferred embodiment, the polymer waterproof mortar of the invention comprises the following components in parts by weight:
480 parts of cement, 82 parts of silica fume, 3242 parts of quartz sand 564.8 parts of rubber powder, 0.56 part of cellulose, 1.12 parts of water reducing agent, 1 part of polypropylene fiber, 1.8 parts of defoaming agent, 3.4 parts of water repellent, 186 parts of water and 0.4 part of amylase.
The polymer waterproof mortar provided by the invention can achieve the following technical effects by the synergistic cooperation of the components and the parts by mass: the waterproof and anti-permeability effect is good, a firm coating can be formed on the surface of the concrete, and the effects of reinforcing, protecting and preventing water are achieved on the surface of the concrete; the adhesive has high bonding strength, strong bonding capability to base surfaces of concrete, mortar, stone, wood boards, polystyrene boards, glass, metal and the like, and certain flexibility; the corrosion resistance is strong, the steel bar is protected, the rusted steel bar can be repaired and protected, and the durability is good; the coating has the advantages of good wear resistance, weather resistance and frost resistance, convenient operation, time saving and labor saving, and can replace organic coatings in medium-intensity gas corrosion environments.
According to a second aspect of the present invention, there is provided a method for preparing a polymer waterproof mortar described in any one of the above, comprising the steps of:
the polymer waterproof mortar is obtained after the components are mixed in proportion.
The preparation method of the polymer waterproof mortar provided by the invention is simple in process and high in efficiency.
In a preferred embodiment, the preparation method of the polymer waterproof mortar of the invention comprises the following steps:
mixing quartz sand, silica fume and cement, adding water, mixing, adding a water reducing agent, a defoaming agent, a water repellent, rubber powder, cellulose and amylase, mixing, then adding polypropylene fiber, mixing and maintaining to obtain the polymer waterproof mortar.
A typical preparation method of polymer waterproof mortar comprises the following steps:
(1) Mixing quartz sand, silica fume and cement, stirring uniformly, adding water, and stirring to obtain mixed slurry;
(2) Then adding a water reducing agent, a defoaming agent, a water repellent, rubber powder, cellulose and amylase into the mixed slurry obtained in the step (1) in sequence, uniformly mixing, and finally adding polypropylene fibers and uniformly stirring to obtain slurry;
(3) And (3) stirring the slurry obtained in the step (2) for 3min, then loading into a test mold, maintaining, and demolding to obtain the polymer waterproof mortar.
The preparation method of the polymer waterproof mortar provided by the invention has the advantages of simple and efficient process and high excellent rate of the obtained polymer waterproof mortar product.
According to a third aspect of the present invention, there is provided a use of the polymer waterproof mortar of any one of the above in a wall surface of a building.
The polymer waterproof mortar provided by the invention has strong bonding capability, can form a firm coating on the surface of a base material, has the effects of reinforcement protection and water resistance, and has good durability, strong corrosion resistance and outstanding application effect.
The invention is further illustrated by the following examples. The materials in the examples are prepared according to known methods or are directly commercially available, unless otherwise specified.
Example 1
Embodiment 1 provides a polymer waterproof mortar, which comprises the following components in parts by mass:
wherein the cement is portland cement, the rubber powder is redispersible latex powder, the cellulose is hydroxypropyl methyl cellulose, the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent, the defoaming agent is an organic silicon defoaming agent, the water repellent is an organic silicon water repellent, and the polypropylene fiber is 6mm long polypropylene fiber.
Example 2
Example 2 provides a polymer waterproof mortar, which comprises the following components in parts by mass, and the balance is the same as example 1.
Example 3
Example 3 provides a polymer waterproof mortar, which comprises the following components in parts by mass, and the rest is the same as example 1.
Example 4
Example 4 provides a polymer waterproof mortar, which comprises the following components in parts by mass, and the rest is the same as example 1.
Example 5
Example 5 provides a polymer waterproof mortar, which comprises the following components in parts by mass, and the rest is the same as example 1.
Example 6
This example is a method of preparing the polymer waterproof mortar of examples 1 to 5, including the steps of:
(1) Mixing quartz sand, silica fume and cement, stirring uniformly, and then adding water and stirring;
(2) Then, sequentially adding a water reducing agent, a defoaming agent, a water repellent, rubber powder, cellulose and amylase in the step (1), uniformly mixing, and finally adding polypropylene fiber and uniformly stirring;
(3) Stirring the slurry obtained in the step (2) for 3min to obtain the polymer waterproof mortar
Comparative example 1
The comparative example differs from example 1 in that it does not contain silica fume, and is otherwise identical to example 1, giving a polymeric waterproofing mortar with the following drawbacks (compared to the waterproofing mortar of example 1): the compressive strength, flexural strength and impermeability of the waterproof mortar of this comparative example were reduced.
Comparative example 2
The comparative example differs from example 1 in that it does not contain polypropylene fibers, and is otherwise identical to example 1, giving a polymeric waterproofing mortar with the following drawbacks (compared to the waterproofing mortar of example 1): the waterproof mortar of this comparative example has reduced impermeability and crack resistance, and also has lower toughness and impact resistance, and reduced freeze-thaw damage resistance.
Comparative example 3
This comparative example differs from example 1 in that it does not contain polypropylene fibers, is replaced with polyethylene fibers in equal amounts, and is otherwise identical to example 1, giving a polymeric waterproofing mortar with the following drawbacks (compared to the waterproofing mortar of example 1): the heat resistance, toughness and water resistance of the waterproof mortar of this comparative example were lowered.
Comparative example 4
The comparative example differs from example 1 in that it does not contain amylase and is otherwise identical to example 1, giving a polymeric waterproofing mortar with the following drawbacks (compared to the waterproofing mortar of example 1): the fluidity of the waterproof mortar of this comparative example was reduced.
Test examples
The results of the performance tests on the polymer waterproof mortars of examples 1 to 5 are shown in Table 1, and the results of the tests on the polymer cement waterproof mortar according to JC/T984-2011 are shown in Table 1.
TABLE 1
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| 28d compressive Strength (MPa) | 40.2 | 36.9 | 37.8 | 35.5 | 39.8 |
| 28d flexural strength (MPa) | 13.5 | 13.9 | 13.7 | 11.1 | 14.2 |
| 28d bond Strength (MPa) | 1.5 | 1.6 | 1.4 | 1.5 | 1.3 |
| 28d impervious pressure (MPa) | 2.2 | 1.8 | 1.9 | 2.1 | 2.3 |
As can be seen from Table 1, the polymer waterproof mortar provided by the invention has the advantages of good waterproof effect and high strength.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The polymer waterproof mortar is characterized by comprising the following components in parts by mass:
470 to 490 parts of cement, 77 to 85 parts of silica fume, 560 to 570 parts of quartz sand, 5.6 to 8 parts of rubber powder, 0.44 to 0.58 part of cellulose, 5.5 to 8.2 parts of additive, 1 to 1.8 parts of polypropylene fiber, 180 to 190 parts of water and 0.3 to 0.6 part of amylase.
2. Polymeric waterproofing mortar according to claim 1, characterized in that said cement comprises portland cement.
3. The polymeric waterproof mortar of claim 1, wherein the rubber powder comprises redispersible latex powder.
4. The polymeric water repellent mortar of claim 1, wherein the cellulose comprises hydroxypropyl methylcellulose.
5. The polymeric water repellent mortar of any of claims 1 to 4, wherein the admixture comprises at least one of a water reducing agent, a defoaming agent and a water repellent;
preferably, the admixture comprises the following components in parts by weight:
1 to 1.2 parts of water reducing agent, 1.5 to 3 parts of defoaming agent and 3 to 4 parts of water repellent.
6. The polymeric water repellent mortar of claim 5, wherein the water reducing agent comprises a polycarboxylic acid high efficiency water reducing agent;
preferably, the defoamer comprises a silicone defoamer;
preferably, the water repellent comprises an organosilicon water repellent.
7. The polymeric waterproof mortar of any one of claims 1 to 4, characterized in that it comprises the following components in parts by mass:
480 parts of cement, 82 parts of silica fume, 5363 parts of quartz sand 564.8 parts of rubber powder, 0.56 part of cellulose, 1.12 parts of water reducing agent, 1 part of polypropylene fiber, 1.8 parts of defoaming agent, 3.4 parts of water repellent, 186 parts of water and 0.4 part of amylase.
8. A process for the preparation of a polymeric waterproofing mortar according to any of claims 1 to 7, characterized in that it comprises the following steps:
the polymer waterproof mortar is obtained after the components are mixed in proportion.
9. The method for preparing a polymer waterproof mortar according to claim 8, characterized by comprising the following steps:
mixing quartz sand, silica fume and cement, adding water, mixing, adding a water reducing agent, a defoaming agent, a water repellent, rubber powder, cellulose and amylase, mixing, adding polypropylene fiber, mixing, and maintaining to obtain the polymer waterproof mortar.
10. Use of a polymeric water repellent mortar according to any of claims 1 to 7 in the wall surfaces of buildings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211085910.5A CN115321921A (en) | 2022-09-06 | 2022-09-06 | Polymer waterproof mortar and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211085910.5A CN115321921A (en) | 2022-09-06 | 2022-09-06 | Polymer waterproof mortar and preparation method and application thereof |
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| CN115321921A true CN115321921A (en) | 2022-11-11 |
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| CN202211085910.5A Pending CN115321921A (en) | 2022-09-06 | 2022-09-06 | Polymer waterproof mortar and preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116023103A (en) * | 2023-02-13 | 2023-04-28 | 乌鲁木齐金雨伞防水材料有限公司 | ZD hydrophobic anti-freezing polymer mortar and preparation method and use method thereof |
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| CN113683364A (en) * | 2021-09-06 | 2021-11-23 | 宁波森泰新材料有限公司 | Flexible anti-cracking waterproof mortar and production method thereof |
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| CN116023103A (en) * | 2023-02-13 | 2023-04-28 | 乌鲁木齐金雨伞防水材料有限公司 | ZD hydrophobic anti-freezing polymer mortar and preparation method and use method thereof |
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