CN110922134A - Cement-based capillary crystalline waterproof coating and preparation method thereof - Google Patents
Cement-based capillary crystalline waterproof coating and preparation method thereof Download PDFInfo
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- CN110922134A CN110922134A CN201911251500.1A CN201911251500A CN110922134A CN 110922134 A CN110922134 A CN 110922134A CN 201911251500 A CN201911251500 A CN 201911251500A CN 110922134 A CN110922134 A CN 110922134A
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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
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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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00508—Cement paints
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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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- 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
Abstract
The invention discloses a cement-based capillary crystalline waterproof coating and a preparation method thereof, belonging to the technical field of building waterproof materials. The permeable crystallization type waterproof coating comprises the following components in percentage by weight: 35-60% of ordinary portland cement, 1-3% of modified siloxane, 5-20% of quartz sand, 1.4-2.4% of silica fume, 1-5% of water glass, 6.3-10.8% of redispersible latex powder, 0.2-1.2% of calcium ion balancing agent, 0.4-1.6% of water reducing agent and 20-30% of granulated blast furnace slag. By adopting the technical scheme of the invention, the impermeability and waterproof performance, the bonding performance and the breaking and compression strength of the obtained permeable crystalline waterproof material can be effectively improved, and the impermeable and waterproof effect can be further improved by coating the permeable crystalline waterproof material on the surface of concrete, so that the service life of the concrete can be prolonged.
Description
Technical Field
The invention belongs to the technical field of building waterproof materials, and particularly relates to a cement-based capillary crystalline waterproof coating and a preparation method thereof.
Background
In recent years, with the rapid development of the construction industry and the increasing of underground works, people have made higher demands on waterproof materials for buildings and moisture-proof and corrosion-proof materials for underground works. The building waterproof material is an important component of building engineering, and the performance quality of the building waterproof material directly influences the service function and the service life of a building.
Waterproof coatings on the existing market can be generally divided into two main categories: rigid waterproof materials and flexible waterproof materials. Wherein, flexible waterproof material's theory of operation does: the waterproof materials with certain thickness are coated on the surface of the concrete to block the pores of the concrete and prevent the erosion of moisture, so that the impermeability of the concrete is improved, but the waterproof materials have weak bonding force with the base concrete, are easy to peel off from the base concrete and are not breathable, and when moisture is discharged from the inside, the waterproof layers on the surface can be broken, so that the service life of the coating is shortened. The working principle of the rigid waterproof material is as follows: active substances are doped into the concrete and react with hydration products in the concrete to generate colloid, so that pores in the concrete are blocked, and the impermeability of the concrete is improved. However, these waterproof materials have poor permeation resistance and water resistance, poor durability of the waterproof layer, and no self-healing property, so that the range of use is limited.
The permeable crystallization type waterproof material belongs to one kind of rigid waterproof material and is prepared with active silicon, cement, active inorganic mixture, etc. and through mixing. The water-soluble anti-permeability concrete has small molecular weight, contains hydrophobic groups and hydrophilic groups, has hydrophilicity larger than hydrophobicity, is soluble in water, does not generate condensation crystallization in a dry environment, and generates condensation crystallization in a wet environment, thereby having good anti-permeability performance to concrete. However, the existing permeable crystalline waterproof material has relatively poor impermeability, adhesive property and breaking and compression strength, and in order to better meet the use requirement of concrete waterproofing, the existing permeable crystalline waterproof material needs to be further improved in various properties.
Disclosure of Invention
1. Problems to be solved
The invention aims to overcome the defects of relatively poor impermeability and waterproof performance, bonding performance and breaking and compression strength of the existing permeable crystalline waterproof material, and provides a cement-based permeable crystalline waterproof coating and a preparation method thereof. By adopting the technical scheme of the invention, various properties of the obtained permeable crystallization type waterproof material can be effectively improved, and the impermeable waterproof effect can be further improved by coating the permeable crystallization type waterproof material on the surface of concrete, so that the service life of the concrete can be prolonged.
2. Technical scheme
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the invention relates to a cement-based capillary crystalline waterproof coating, which comprises the following components in percentage by weight:
furthermore, the cement-based permeable crystallization type waterproof coating preferably comprises the following components in percentage by weight:
further, the ordinary portland cement is grade P · O42.5.
Furthermore, the modified siloxane is prepared by taking acrylic ester and n-octyl triethoxy siloxane as raw materials, adding an emulsifier and an initiator and carrying out emulsion polymerization reaction.
Furthermore, the emulsifier adopts sodium dodecyl benzene sulfonate; sodium persulfate is adopted as the initiator.
Furthermore, the quartz sand is common river sand, the fineness modulus is 2-3, and the mud content is 0-0.5%, wherein the fineness modulus of the quartz sand is controlled to be 20-40% and 60-80% respectively when being controlled to be 2-2.3 and 2.3-3.0; the water glass is sodium silicate water glass, and the modulus of the water glass is 0.5-1.5.
Furthermore, the redispersible latex powder is ethylene-vinyl acetate copolymer; the calcium ion balancing agent is calcium hydroxide or dihydrate gypsum; the water reducing agent is a powdery sulfamate water reducing agent or a naphthalenesulfonate formaldehyde water reducing agent.
Furthermore, the granulated blast furnace slag particles are 200 meshes or more, wherein the mass percentages of the blast furnace slag particles with the meshes of 200-300 meshes and 300 meshes or more are respectively 10-30% and 70-90%.
The preparation method of the cement-based permeable crystallization type waterproof coating mainly comprises the following steps: firstly, adding modified siloxane, a calcium ion balancing agent, a water reducing agent and water into a stirring barrel, then adding ordinary portland cement, silica fume, water glass, redispersible latex powder and granulated blast furnace slag, and stirring; and adding quartz sand and stirring to obtain the waterproof coating.
Furthermore, when stirring is carried out before adding the quartz sand, the rotating speed of the stirrer is 57-67 r/min, and stirring is carried out for 20-40 s; then, continuously stirring for 20-40 seconds again when adding the quartz sand; stopping stirring, adjusting the rotating speed of the stirrer to 115-135 r/min, scraping the slurry to the middle part of the stirring barrel, and continuously stirring for 50-70 s.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the cement-based permeable crystalline waterproof coating, the components and the proportion of the permeable crystalline waterproof coating are optimally designed, and the components are cooperatively matched, so that the impermeability, the bonding property and the breaking and compression strength of the permeable crystalline waterproof coating can be effectively improved, the impermeable and waterproof effects of the permeable crystalline waterproof coating can be further improved when the permeable crystalline waterproof coating is coated on concrete, and the service life of the concrete can be prolonged.
(2) According to the cement-based permeable crystalline waterproof coating, by adding the modified siloxane, on one hand, the modified siloxane has a small molecular weight, so that the permeability of the waterproof coating can be effectively improved when the modified siloxane is added into the permeable crystalline waterproof coating; on the other hand, the waterproof coating has better waterproof performance due to the addition of the modified siloxane, so that the waterproof coating can be coated on a concrete substrate, the waterproof capability of the concrete substrate can be effectively improved, and the service life of the concrete substrate can be prolonged. Meanwhile, by adding the redispersible latex powder, on one hand, the redispersible latex powder has hydrophobicity, can further prevent water from permeating, and has better waterproof effect. On the other hand, the adhesive strength and flexibility of the waterproof coating and the concrete substrate can be effectively improved, and the waterproof coating is prevented from being easily peeled off from the surface of the concrete substrate and cracked after being coated.
(3) According to the cement-based permeable crystallization type waterproof coating, silica fume is added, so that on one hand, the silica fume is used as a gap filling material to fill gaps among cement particles, and therefore the strength of a concrete matrix can be effectively improved. On the other hand, under the alkaline condition, the silica fume can perform secondary hydration reaction with the hydration product of the concrete substrate material to form a C-S-H gel product, so that the mechanical property and the durability of the concrete structure can be further improved. Meanwhile, especially when the water glass is added and the modulus of the water glass is adjusted to be 0.5-1.5 by adopting NaOH, on one hand, the strength of the obtained waterproof coating is favorably ensured, and on the other hand, the setting time of the mineral material can be effectively adjusted, so that the using effect of the waterproof coating is favorably further ensured.
(4) According to the cement-based permeable crystallization type waterproof coating, the fineness modulus of quartz sand and the mesh number of blast furnace slag are optimally designed, so that the cement-based permeable crystallization type waterproof coating can play a skeleton role, effectively improves the grain composition of raw materials in the permeable crystallization type waterproof coating, inhibits the self-shrinkage of the coating, and can improve the mechanical strength of the waterproof coating. On the other hand, the waterproof effect of the waterproof coating is favorably ensured, the use amount of the blast furnace slag can be effectively saved, and the production cost is reduced. Meanwhile, the mechanical strength of the waterproof coating can be further improved by continuously grading the fineness modulus of the quartz sand and the mesh number of the blast furnace slag.
(5) According to the preparation method of the cement-based permeable crystalline waterproof coating, the preparation process is optimally designed, particularly when the permeable crystalline waterproof coating is prepared by adopting a segmented stirring method, the impermeability and the bonding property of the permeable crystalline waterproof coating can be further improved, and the obtained waterproof coating has better compressive and flexural strength.
Drawings
FIG. 1 shows the results of performance tests of the permeable crystalline waterproof coating obtained in each example.
Detailed Description
The invention relates to a cement-based capillary crystalline waterproof coating, which comprises the following components in percentage by weight: 35-60% of ordinary portland cement, 1-3% of modified siloxane, 5-20% of quartz sand, 1.4-2.4% of silica fume, 1-5% of water glass, 6.3-10.8% of redispersible latex powder, 0.2-1.2% of calcium ion balancing agent, 0.4-1.6% of water reducing agent and 20-30% of granulated blast furnace slag. Specifically, the cement-based capillary crystalline waterproof coating preferably comprises the following components in percentage by weight: 56% of ordinary portland cement, 2% of modified siloxane, 6.2% of quartz sand, 2.2% of silica fume, 3% of water glass, 10% of redispersible latex powder, 0.2% of calcium ion balancing agent, 0.4% of water reducing agent and 20% of granulated blast furnace slag.
The preparation method of the permeable crystallization type waterproof coating mainly comprises the following steps: cleaning a stirring blade and a stirring barrel by using clean wet cloth before stirring by using a planetary mortar stirrer, adding modified siloxane, a calcium ion balancing agent, a water reducing agent and water into the stirring barrel, adding ordinary portland cement, silica fume, water glass, redispersible latex powder and granulated blast furnace slag, rotating the stirrer at the rotating speed of 57-67 r/min, and stirring for 20-40 s; uniformly adding quartz sand into the stirring barrel, and continuing stirring for 20-40 s; and stopping stirring for 90s, adjusting the rotating speed of the stirrer to 115-135 r/min, scraping the slurry to the middle part of the stirring barrel, and continuously stirring for 50-70 s to obtain the waterproof coating.
The existing cement-based permeable crystallization type waterproof material has the main waterproof principle that: the aim of water resistance is achieved by utilizing the osmotic crystallization effect of active chemical substances in the components. In the effective penetration range of active chemical substances, the permeable crystallization type waterproof material is stirred with water and then undergoes hydration reaction to generate water-insoluble gel, so that pores in concrete are blocked, the micropores are sealed, the compactness of the concrete is increased, a permanent sealing waterproof layer integrated with the concrete is formed, and the durability of the concrete is improved. However, the quality (mainly including the anti-permeability and waterproof performance, the adhesive performance and the breaking and compression strength) of the existing cement-based permeable crystalline waterproof material on the market is uneven, so that the waterproof effect of the existing cement-based permeable crystalline waterproof material cannot be effectively ensured, and when the existing cement-based permeable crystalline waterproof material is coated on the surface of concrete, the application effect of the existing cement-based permeable crystalline waterproof material is relatively poor, and the existing cement-based permeable crystalline waterproof material is difficult to effectively protect the. Therefore, a novel cement-based permeable crystallization type waterproof material is urgently needed at present, so that the problem of the existing waterproof industry, particularly the waterproof problem of a concrete substrate, can be solved, and good economic benefit and social benefit are brought.
Aiming at the problems, through a large amount of experimental researches, the inventor of the application optimizes the components and the proportion of the permeable crystallization type waterproof coating and utilizes the cooperative cooperation among the components, thereby effectively improving the impermeability, the adhesive property and the breaking and compression strength, and further improving the protection effect on concrete when the permeable crystallization type waterproof coating is coated on the concrete. The permeable crystallization type waterproof coating mainly comprises ordinary portland cement, quartz sand, blast furnace slag and other additives, wherein the grade of the ordinary portland cement is P.O 42.5. The quartz sand is ultra-fine quartz sand, and the mud content is 0-0.5%; the blast furnace slag is industrial waste slag, has low cost and sufficient sources, and is easy to obtain in large quantity, on one hand, quartz sand and blast furnace slag can be used as aggregate to be added, and mainly play a role of a framework; on the other hand, the fineness modulus of quartz sand and the mesh number of blast furnace slag are optimally designed, the fineness modulus of quartz sand is respectively controlled to be 2-3, the mud content is 0-0.5%, and the mesh number of blast furnace slag is 200 meshes or more, and meanwhile, the fineness modulus of quartz sand and the mesh number of blast furnace slag are optimally designed in a continuous grading mode, specifically, the fineness modulus of quartz sand is controlled to be 20-40% and 60-80% respectively when the fineness modulus of quartz sand is controlled to be 2-2.3 and 2.3-3.0, and the mesh number of blast furnace slag is controlled to be 10-30% and 70-90% respectively when the fineness modulus of quartz sand is controlled to be 200-300 meshes and 300 meshes or more, so that the grain grading of raw materials in the permeable crystallization type waterproof coating can be effectively improved, the mechanical strength of the waterproof coating can be improved, and the self-shrinkage of the coating can be effectively inhibited. In addition, the blast furnace slag has certain activation activity, can participate in a muddy water gasification reaction after being added to generate a cementing material, and is coated on the surface of concrete, so that the compressive strength of the concrete can be further improved, the use amount of cement can be effectively reduced, and the production cost can be saved.
The additive mainly comprises silica fume, modified siloxane and redispersible latex powder, and the applicant optimizes and designs the type selection and the proportion of the additive, so that on one hand, the impermeability and the waterproof performance, the adhesive performance and the breaking and compression strength of the permeable crystallization type waterproof coating can be further improved; on the other hand, by utilizing the synergistic effect among all component substances, the waterproof effect of the concrete can be effectively ensured, and the service life of the concrete can be prolonged when the concrete is protected. Particularly, due to the addition of the silica fume, on one hand, the silica fume can be filled in gaps among cement particles, so that the overall strength of concrete can be improved; on the other hand, the volcanic ash activity of the volcanic ash can generate secondary hydration reaction with hydration products of the concrete substrate material under alkaline conditions to form C-S-H gel products, and secondary filling is carried out on gaps of the concrete, so that the mechanical property and durability of the concrete structure can be further improved. Meanwhile, the water glass can be used as an alkali activator in a gelling system, the potential activity of the mineral material can be effectively excited, so that the adjustment of the setting time of the mineral material is facilitated, and particularly, when the modulus of the water glass is adjusted to be 0.5-1.5 by adopting NaOH, the adjustment effect of the setting time of the mineral material is better.
According to the invention, the modified siloxane is added into the waterproof coating, the modified siloxane is prepared by taking acrylate and n-octyl triethoxy siloxane as raw materials, Sodium Dodecyl Benzene Sulfonate (SDBS) as an emulsifier and sodium persulfate as an initiator through emulsion polymerization, the modified siloxane has a small molecular weight and excellent permeability, and the excellent waterproof protection effect can be achieved by coating a small amount of the modified siloxane. Meanwhile, the concrete substrate coated with the waterproof coating containing the modified siloxane on the surface can obtain excellent water repellency, and the original appearance of the concrete substrate can be kept, so that the service life of the concrete substrate is prolonged.
In addition, the redispersible latex powder is added into the waterproof coating, so that the bonding performance of the waterproof coating can be effectively improved. Specifically, the redispersible latex powder adopts ethylene-vinyl acetate copolymer, and the addition of the ethylene-vinyl acetate copolymer can effectively improve the bonding strength and flexibility of the waterproof coating and the concrete substrate, so that the waterproof coating is prevented from being easily peeled off and cracked from the surface of the concrete substrate after coating, and the hydrophobicity of the ethylene-vinyl acetate copolymer can effectively prevent water from permeating into the concrete, thereby further ensuring the waterproof effect of the concrete substrate. Meanwhile, a calcium ion balancing agent and a water reducing agent are also added in the invention, specifically, the calcium ion balancing agent adopts calcium hydroxide or dihydrate gypsum, and the water reducing agent adopts a powdery sulfamate water reducing agent or a naphthalenesulfonate formaldehyde water reducing agent, so that various performances of the obtained waterproof coating can be further ensured.
The invention is further described with reference to specific examples.
Example 1
The permeable crystallization type waterproof material obtained in the embodiment comprises the following components in percentage by weight: 56% of ordinary portland cement, 2% of modified siloxane, 6.2% of quartz sand, 2.2% of silica fume, 3% of water glass, 0.5% of modulus, 10% of redispersible latex powder, 0.2% of calcium ion balancing agent, 0.4% of water reducing agent and 20% of granulated blast furnace slag. Wherein the calcium ion balancing agent adopts calcium hydroxide, and the water reducing agent adopts a powdery sulfamate water reducing agent; the fineness modulus of the quartz sand is controlled to be 2-2.3, and the fineness modulus of the quartz sand is controlled to be 20% and 80% respectively when the fineness modulus of the quartz sand is 2.3-3.0; the mass percentages of the blast furnace slag with the mesh number controlled to be 200-300 meshes, 300 meshes and above are respectively 10% and 90%.
Cleaning the stirring blades and a stirring barrel by using clean wet cloth before stirring by using a planetary mortar stirrer, adding modified siloxane, a calcium ion balancing agent, a water reducing agent and water in the components into the stirring barrel, adding ordinary portland cement, silica fume, water glass, redispersible latex powder and granulated blast furnace slag, rotating the stirrer at the rotating speed of 57r/min, and stirring for 20 s; then uniformly adding quartz sand into the stirring barrel and continuously stirring for 20 s; and stopping stirring for 90s, adjusting the rotating speed of the stirrer to 115r/min, scraping the slurry to the middle part of the stirring barrel, and continuously stirring for 50s to obtain the waterproof coating.
Meanwhile, the obtained capillary crystalline waterproof coating is subjected to performance tests of 28-day flexural strength, 28-day compressive strength, 28-day primary impervious pressure and 28-day wet base surface bonding strength, and the specific test results are shown in fig. 1. As can be seen from the figure, the 28-day flexural strength, the 28-day compressive strength, the 28-day primary permeation resistance pressure and the 28-day wet base surface bonding strength are respectively 7.8MPa, 54.2MPa, 1.3MPa and 3.1MPa, and the results of various performance tests are excellent.
Example 2
The permeable crystallization type waterproof material obtained in the embodiment comprises the following components in percentage by weight: 45% of ordinary portland cement, 3% of modified siloxane, 10% of quartz sand, 1.8% of silica fume, 1% of water glass, 0.5% of modulus, 8.1% of redispersible latex powder, 0.4% of calcium ion balancing agent, 0.7% of water reducing agent and 30% of granulated blast furnace slag. Wherein the calcium ion balancing agent adopts calcium hydroxide, and the water reducing agent adopts a powdery sulfamate water reducing agent; the fineness modulus of the quartz sand is controlled to be 2-2.3, and the fineness modulus of the quartz sand is controlled to be 40% and 60% respectively when the fineness modulus of the quartz sand is 2.3-3.0; the mass percentages of the blast furnace slag with the mesh number controlled to be 200-300 meshes, 300 meshes and above are respectively 30% and 70%.
Cleaning the stirring blades and a stirring barrel by using clean wet cloth before stirring by using a planetary mortar stirrer, adding modified siloxane, a calcium ion balancing agent, a water reducing agent and water in the components into the stirring barrel, adding ordinary portland cement, silica fume, water glass, redispersible latex powder and granulated blast furnace slag, rotating the stirrer at the rotating speed of 60r/min, and stirring for 25 s; then uniformly adding quartz sand into the stirring barrel and continuously stirring for 25 s; and stopping stirring for 90s, adjusting the rotating speed of the stirrer to 120r/min, scraping the slurry to the middle part of the stirring barrel, and continuously stirring for 55s to obtain the waterproof coating.
Meanwhile, the obtained capillary crystalline waterproof coating is subjected to performance tests of 28-day flexural strength, 28-day compressive strength, 28-day primary impervious pressure and 28-day wet base surface bonding strength, and the specific test results are shown in fig. 1. As can be seen from the figure, the 28-day flexural strength, 28-day compressive strength, 28-day primary permeation resistance pressure and 28-day wet base surface bonding strength are respectively 7.2MPa, 45.6MPa, 1.1MPa and 2.8MPa, and the results of all the performance tests are excellent and are slightly inferior to example 1.
Example 3
The permeable crystallization type waterproof material obtained in the embodiment comprises the following components in percentage by weight: 50% of ordinary portland cement, 2% of modified siloxane, 6.2% of quartz sand, 2% of silica fume, 5% of water glass, 1.5% of modulus, 9% of redispersible latex powder, 0.2% of calcium ion balancing agent, 0.6% of water reducing agent and 25% of granulated blast furnace slag. Wherein the calcium ion balancing agent adopts calcium hydroxide, and the water reducing agent adopts a powdery naphthalenesulfonate formaldehyde water reducing agent; the fineness modulus of the quartz sand is controlled to be 2-2.3, and the fineness modulus of the quartz sand is controlled to be 30-70% in percentage by mass when the fineness modulus of the quartz sand is 2.3-3.0; the mass percentages of the blast furnace slag with the mesh number controlled to be 200-300 meshes, 300 meshes and above are respectively 20% and 80%.
Cleaning the stirring blades and a stirring barrel by using clean wet cloth before stirring by using a planetary mortar stirrer, adding modified siloxane, a calcium ion balancing agent, a water reducing agent and water in the components into the stirring barrel, adding ordinary portland cement, silica fume, water glass, redispersible latex powder and granulated blast furnace slag, rotating the stirrer at the rotating speed of 65r/min, and stirring for 30 s; then uniformly adding quartz sand into the stirring barrel and continuously stirring for 30 s; and stopping stirring for 90s, adjusting the rotating speed of the stirrer to 125r/min, scraping the slurry to the middle part of the stirring barrel, and continuously stirring for 60s to obtain the waterproof coating.
Meanwhile, the obtained capillary crystalline waterproof coating is subjected to performance tests of 28-day flexural strength, 28-day compressive strength, 28-day primary impervious pressure and 28-day wet base surface bonding strength, and the specific test results are shown in fig. 1. As can be seen from the figure, the 28-day flexural strength, 28-day compressive strength, 28-day primary permeation resistance pressure and 28-day wet base surface bonding strength are respectively 7.5MPa, 51.2MPa, 1.3MPa and 2.9MPa, and the results of all the performance tests are excellent and are slightly inferior to example 1.
Example 4
The permeable crystallization type waterproof material obtained in the embodiment comprises the following components in percentage by weight: 40% of ordinary portland cement, 2% of modified siloxane, 14.6% of quartz sand, 1.6% of silica fume, 3% of water glass, 1.5% of modulus, 7.2% of redispersible latex powder, 1.0% of calcium ion balancing agent, 1.6% of water reducing agent and 30% of granulated blast furnace slag. Wherein the calcium ion balancing agent adopts dihydrate gypsum, and the water reducing agent adopts a powdery sulfamate water reducing agent; the fineness modulus of the quartz sand is controlled to be 2-2.3, and the fineness modulus of the quartz sand is controlled to be 30-70% in percentage by mass when the fineness modulus of the quartz sand is 2.3-3.0; the mass percentages of the blast furnace slag with the mesh number controlled to be 200-300 meshes, 300 meshes and above are respectively 30% and 70%.
Cleaning the stirring blades and a stirring barrel by using clean wet cloth before stirring by using a planetary mortar stirrer, adding modified siloxane, a calcium ion balancing agent, a water reducing agent and water in the components into the stirring barrel, adding ordinary portland cement, silica fume, water glass, redispersible latex powder and granulated blast furnace slag, rotating the stirrer at the rotating speed of 63r/min, and stirring for 25 s; then uniformly adding quartz sand into the stirring barrel and continuously stirring for 40 s; and stopping stirring for 90s, adjusting the rotating speed of the stirrer to 130r/min, scraping the slurry to the middle part of the stirring barrel, and continuously stirring for 65s to obtain the waterproof coating.
Meanwhile, the obtained capillary crystalline waterproof coating is subjected to performance tests of 28-day flexural strength, 28-day compressive strength, 28-day primary impervious pressure and 28-day wet base surface bonding strength, and the specific test results are shown in fig. 1. As can be seen from the figure, the 28-day flexural strength, 28-day compressive strength, 28-day primary permeation resistance pressure and 28-day wet base surface bonding strength are respectively 7.3MPa, 49.7MPa, 1.2MPa and 2.7MPa, and the results of all the performance tests are excellent and are slightly inferior to example 1.
Example 5
The permeable crystallization type waterproof material obtained in the embodiment comprises the following components in percentage by weight: 35% of ordinary portland cement, 1% of modified siloxane, 20% of quartz sand, 2.4% of silica fume, 3% of water glass, 2.0% of modulus, 10.8% of redispersible latex powder, 1.2% of calcium ion balancing agent, 1.0% of water reducing agent and 25% of granulated blast furnace slag. Wherein the calcium ion balancing agent adopts dihydrate gypsum, and the water reducing agent adopts a powdery sulfamate water reducing agent; the fineness modulus of the quartz sand is controlled to be 2-2.3, and the fineness modulus of the quartz sand is controlled to be 20% and 80% respectively when the fineness modulus of the quartz sand is 2.3-3.0; the mass percentages of the blast furnace slag with the mesh number controlled to be 200-300 meshes, 300 meshes and above are respectively 20% and 80%.
Cleaning the stirring blades and a stirring barrel by using clean wet cloth before stirring by using a planetary mortar stirrer, adding modified siloxane, a calcium ion balancing agent, a water reducing agent and water in the components into the stirring barrel, adding ordinary portland cement, silica fume, water glass, redispersible latex powder and granulated blast furnace slag, rotating the stirrer at the rotating speed of 67r/min, and stirring for 30 s; then uniformly adding quartz sand into the stirring barrel and continuously stirring for 25 s; and stopping stirring for 90s, adjusting the rotating speed of the stirrer to 135r/min, scraping the slurry to the middle part of the stirring barrel, and continuously stirring for 70s to obtain the waterproof coating.
Meanwhile, the obtained capillary crystalline waterproof coating is subjected to performance tests of 28-day flexural strength, 28-day compressive strength, 28-day primary impervious pressure and 28-day wet base surface bonding strength, and the specific test results are shown in fig. 1. As can be seen from the figure, the 28-day flexural strength, 28-day compressive strength, 28-day primary permeation resistance pressure and 28-day wet base surface bonding strength are respectively 7.4MPa, 50.7MPa, 1.1MPa and 2.6MPa, and the results of all the performance tests are excellent and are slightly inferior to example 1.
Example 6
The permeable crystallization type waterproof material obtained in the embodiment comprises the following components in percentage by weight: 60% of ordinary portland cement, 1% of modified siloxane, 5% of quartz sand, 1.4% of silica fume, 1% of water glass, 1.0% of modulus, 6.3% of redispersible latex powder, 0.2% of calcium ion balancing agent, 0.4% of water reducing agent and 20% of granulated blast furnace slag. Wherein the calcium ion balancing agent adopts dihydrate gypsum, and the water reducing agent adopts a powdery sulfamate water reducing agent; the fineness modulus of the quartz sand is controlled to be 2-2.3, and the fineness modulus of the quartz sand is controlled to be 30-70% in percentage by mass when the fineness modulus of the quartz sand is 2.3-3.0; the mass percentages of the blast furnace slag with the mesh number controlled to be 200-300 meshes, 300 meshes and above are respectively 20% and 80%.
Cleaning the stirring blades and a stirring barrel by using clean wet cloth before stirring by using a planetary mortar stirrer, adding modified siloxane, a calcium ion balancing agent, a water reducing agent and water in the components into the stirring barrel, adding ordinary portland cement, silica fume, water glass, redispersible latex powder and granulated blast furnace slag, rotating the stirrer at the rotating speed of 60r/min, and stirring for 30 s; then uniformly adding quartz sand into the stirring barrel and continuously stirring for 30 s; and stopping stirring for 90s, adjusting the rotating speed of the stirrer to 120r/min, scraping the slurry to the middle part of the stirring barrel, and continuously stirring for 60s to obtain the waterproof coating.
Meanwhile, the obtained capillary crystalline waterproof coating is subjected to performance tests of 28-day flexural strength, 28-day compressive strength, 28-day primary impervious pressure and 28-day wet base surface bonding strength, and the specific test results are shown in fig. 1. As can be seen from the figure, the 28-day flexural strength, 28-day compressive strength, 28-day primary permeation resistance pressure and 28-day wet base surface bonding strength are respectively 7.3MPa, 51.9MPa, 1.3MPa and 2.7MPa, and the results of all the performance tests are excellent and are slightly inferior to example 1.
As can be seen from fig. 1, each index of the waterproof coating obtained in examples 1 to 6 is much higher than the requirement of the technical index of GB18445-2012 standard, wherein when the amount of the modified siloxane is 2%, the anti-permeability effect is the best, to a certain extent, the anti-permeability pressure and the compressive strength have a linear relationship, and the higher the compressive strength is, the more compact the structure of the system is, the lower the porosity inside the matrix is, which is helpful for the matrix to block water molecules, so that the water molecules are not easy to permeate into the concrete matrix, and the anti-permeability pressure can be improved.
Claims (10)
1. A cement-based permeable crystallization type waterproof coating is characterized in that: the weight percentage of each component is as follows:
2. the cementitious capillary crystalline waterproofing coating according to claim 1 wherein: the weight percentage of each component is preferably as follows:
3. the cementitious capillary crystalline waterproofing coating according to claim 1 or 2 wherein: the ordinary portland cement is P.O 42.5 in grade.
4. The cementitious capillary crystalline waterproofing coating according to claim 1 or 2 wherein: the modified siloxane is prepared by taking acrylate and n-octyl triethoxy siloxane as raw materials, adding an emulsifier and an initiator and carrying out emulsion polymerization reaction.
5. The cementitious capillary crystalline waterproofing coating according to claim 4 wherein: the emulsifier adopts sodium dodecyl benzene sulfonate; sodium persulfate is adopted as the initiator.
6. The cementitious capillary crystalline waterproofing coating according to claim 1 or 2 wherein: the quartz sand is ordinary river sand, the fineness modulus is 2-3, and the mud content is 0-0.5%, wherein the fineness modulus of the quartz sand is controlled to be 20-40% and 60-80% respectively when the fineness modulus is controlled to be 2-2.3 and 2.3-3.0; the water glass is sodium silicate water glass, and the modulus of the water glass is 0.5-1.5.
7. The cementitious capillary crystalline waterproofing coating according to claim 1 or 2 wherein: the redispersible latex powder is ethylene-vinyl acetate copolymer; the calcium ion balancing agent is calcium hydroxide or dihydrate gypsum; the water reducing agent is a powdery sulfamate water reducing agent or a naphthalenesulfonate formaldehyde water reducing agent.
8. The cementitious capillary crystalline waterproofing coating according to claim 1 or 2 wherein: the granulated blast furnace slag particles are 200 meshes or more, wherein the mass percentages of the blast furnace slag particles with the meshes of 200-300 meshes and 300 meshes or more are respectively 10-30% and 70-90%.
9. A method for preparing the cementitious capillary crystalline waterproofing coating according to any of claims 1 to 8, characterized in that: firstly, adding modified siloxane, a calcium ion balancing agent, a water reducing agent and water into a stirring barrel, then adding ordinary portland cement, silica fume, water glass, redispersible latex powder and granulated blast furnace slag, and stirring; and adding quartz sand and stirring to obtain the waterproof coating.
10. The method for preparing a cementitious capillary crystalline waterproofing coating according to claim 9, wherein: when stirring is carried out before adding the quartz sand, the rotating speed of the stirrer is 57-67 r/min, and stirring is carried out for 20-40 s; then, continuously stirring for 20-40 seconds again when adding the quartz sand; stopping stirring, adjusting the rotating speed of the stirrer to 115-135 r/min, scraping the slurry to the middle part of the stirring barrel, and continuously stirring for 50-70 s.
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|---|---|---|---|---|
| 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 |
| CN111848043A (en) * | 2020-07-28 | 2020-10-30 | 中铁隧道局集团有限公司 | Flame-retardant cement-based capillary crystalline waterproof coating and preparation method thereof |
| CN111978033A (en) * | 2020-05-22 | 2020-11-24 | 上饶市天佳新型材料有限公司 | Capillary crystalline waterproof coating and preparation method and use method thereof |
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| CN115838252A (en) * | 2022-12-10 | 2023-03-24 | 山西省交通规划勘察设计院有限公司 | Capillary crystallization waterproof agent, preparation method and application thereof, waterproof coating and preparation method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891432A (en) * | 2010-07-14 | 2010-11-24 | 江苏博特新材料有限公司 | Permeable crystalline waterproof coating |
| CN104355584A (en) * | 2014-10-24 | 2015-02-18 | 上海宝田新型建材有限公司 | Cementitious capillary crystalline waterproofing building material |
| CN105060816A (en) * | 2015-08-07 | 2015-11-18 | 马鞍山十七冶工程科技有限责任公司 | Cement base permeating crystallizing waterproof paint formed by reinforcing straw fibers |
| CN105110730A (en) * | 2015-08-03 | 2015-12-02 | 盐城工学院 | Modified organic silicon reinforced cement-based permeable crystallization type waterproof coating and preparation method therefor |
| CN106946518A (en) * | 2017-01-09 | 2017-07-14 | 华南理工大学 | A kind of accelerated cement base infiltration crystallization type selfreparing waterproof material and preparation method thereof |
| WO2017159884A1 (en) * | 2016-03-12 | 2017-09-21 | Ri Byong Hyok | High-performance permeable crystalline waterproof agent, its preparation method and waterproof construction method thereof |
-
2019
- 2019-12-09 CN CN201911251500.1A patent/CN110922134A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891432A (en) * | 2010-07-14 | 2010-11-24 | 江苏博特新材料有限公司 | Permeable crystalline waterproof coating |
| CN104355584A (en) * | 2014-10-24 | 2015-02-18 | 上海宝田新型建材有限公司 | Cementitious capillary crystalline waterproofing building material |
| CN105110730A (en) * | 2015-08-03 | 2015-12-02 | 盐城工学院 | Modified organic silicon reinforced cement-based permeable crystallization type waterproof coating and preparation method therefor |
| CN105060816A (en) * | 2015-08-07 | 2015-11-18 | 马鞍山十七冶工程科技有限责任公司 | Cement base permeating crystallizing waterproof paint formed by reinforcing straw fibers |
| WO2017159884A1 (en) * | 2016-03-12 | 2017-09-21 | Ri Byong Hyok | High-performance permeable crystalline waterproof agent, its preparation method and waterproof construction method thereof |
| CN106946518A (en) * | 2017-01-09 | 2017-07-14 | 华南理工大学 | A kind of accelerated cement base infiltration crystallization type selfreparing waterproof material and preparation method thereof |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111978033A (en) * | 2020-05-22 | 2020-11-24 | 上饶市天佳新型材料有限公司 | Capillary crystalline waterproof coating and preparation method and use method thereof |
| 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 |
| CN111848043A (en) * | 2020-07-28 | 2020-10-30 | 中铁隧道局集团有限公司 | Flame-retardant cement-based capillary crystalline waterproof coating and preparation method thereof |
| CN112851260A (en) * | 2021-02-11 | 2021-05-28 | 国控基业(北京)科技有限公司 | Capillary crystalline waterproofing agent and preparation method thereof |
| CN114105545A (en) * | 2021-12-22 | 2022-03-01 | 成都拜迪新材料有限公司 | Permeable waterproof coating for concrete protection |
| CN114477912A (en) * | 2022-02-25 | 2022-05-13 | 上海凯顿百森建筑材料科技发展有限公司 | Cement-based capillary crystalline waterproof structure |
| CN114574016A (en) * | 2022-02-28 | 2022-06-03 | 北京建筑材料检验研究院有限公司 | Permeable crystallization waterproof coating and preparation and performance detection method thereof |
| CN115838252A (en) * | 2022-12-10 | 2023-03-24 | 山西省交通规划勘察设计院有限公司 | Capillary crystallization waterproof agent, preparation method and application thereof, waterproof coating and preparation method thereof |
| CN116041996A (en) * | 2023-01-02 | 2023-05-02 | 中建西部建设建材科学研究院有限公司 | Surface protective agent prepared from waste water of stirring station and preparation method thereof |
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