CN113429176B - Cement-based waterproof material based on osmotic crystallization principle - Google Patents
Cement-based waterproof material based on osmotic crystallization principle Download PDFInfo
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/30—Oxides other than silica
- C04B14/304—Magnesia
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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
- C04B18/0445—Synthetic gypsum, e.g. phosphogypsum
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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
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
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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
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0045—Polymers chosen for their physico-chemical characteristics
- C04B2103/0051—Water-absorbing polymers, hydrophilic polymers
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant 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
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a cement-based waterproof material based on a capillary crystallization principle, belonging to the technical field of cement-based waterproof materials; the raw materials comprise, by weight, 40-70 parts of portland cement, 18-27 parts of quartz sand, 43-65 parts of a filler, 4-10 parts of high-molecular water-absorbing resin, 4-8 parts of aluminum potassium sulfate, 4-8 parts of hydroxypropyl methyl cellulose and 60-80 parts of water; the filler is composed of fly ash, fluorgypsum and light-burned magnesium oxide according to the weight ratio of 1:1.5-2: 3-4. The cement-based waterproof material is characterized in that fly ash, fluorgypsum, low-burning magnesium oxide and high-molecular water-absorbing resin are introduced, and a multi-expansion-source slow release technology is formed by utilizing the synergistic effect of the filler and the high-molecular water-absorbing resin, so that a micro-expansion effect is achieved, and the volume stability and the crack resistance of the cement-based permeable crystalline waterproof material are greatly improved. The defects of large shrinkage, easy cracking, poor durability and the like of the traditional cement-based permeable crystalline waterproof material are overcome, and the performances of the waterproof material such as compressive strength, wet base surface bonding strength, impermeability and the like are also obviously improved.
Description
Technical Field
The invention belongs to the field of cement-based waterproof materials, and particularly relates to a cement-based waterproof material based on a permeation crystallization principle.
Background
The cement-base permeable crystallized waterproof material is one kind of rigid waterproof material with self-repairing effect on concrete crack, and consists of Portland cement and fine quartz sand as main base material, special active chemical matter, other additive, etc. After the water-proof material reacts with water, active chemical substances contained in the water-proof material permeate into the concrete through the carrier, water-insoluble crystals are formed in the concrete, and capillary channels are filled, so that the concrete is compact, and the water-proof effect is achieved.
At present, the traditional cement-based permeable crystallization type waterproof material is widely used in various projects, but the defects of large shrinkage degree, easy cracking, poor durability and the like still exist in practical application; therefore, it is imperative to develop a new waterproof material that can overcome such drawbacks.
In the prior art, Chinese patent application CN111848025A provides an infiltration crystallization type cement-based waterproof coating, which comprises the raw materials of medical stone composite super absorbent resin, a crystallization activator, portland cement, quartz sand and an inorganic filler, wherein the preparation method of the medical stone composite super absorbent resin comprises the steps of adding acrylic acid into water, stirring, adding medical stone, ammonium persulfate and N, N' -methylene bisacrylamide, stirring at a constant temperature of 65-75 ℃, carrying out a polymerization reaction for 5-8 hours, and drying to obtain the medical stone composite super absorbent resin.
For example, chinese patent application CN108238752A provides a super absorbent resin-based heat storage concrete and a preparation method thereof, wherein the raw materials are prepared from a cementitious material, pre-absorbed super absorbent resin particles, fine aggregates, a heat conducting medium, fibers and water, and the usage amount of each raw material is as follows: the pre-absorbed super absorbent resin particles account for 50-200% of the using amount of the cementing material, the fine aggregate accounts for 0-150% of the using amount of the cementing material, the heat conducting medium accounts for 0.01-2% of the using amount of the cementing material, the fiber accounts for 0.1-1% of the using amount of the cementing material, and the water accounts for 30-50% of the using amount of the cementing material.
These waterproof coatings have limited carbonization resistance and reinforcement corrosion resistance for concrete buildings.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a cement-based waterproof material based on a permeable crystallization principle, which is realized by the following technology.
A cement-based waterproof material based on a permeation crystallization principle comprises, by weight, 40-70 parts of Portland cement, 18-27 parts of quartz sand, 43-65 parts of a filler, 4-10 parts of a high-molecular water-absorbing resin, 4-8 parts of potassium aluminum sulfate, 4-8 parts of hydroxypropyl methyl cellulose and 60-80 parts of water; the filler is composed of fly ash, fluorgypsum and light-burned magnesium oxide according to the weight ratio of 1:1.5-2: 3-4.
The cement-based waterproof material forms a multi-effect micro-expansion slow-release system by introducing fly ash-fluorgypsum-low-burning magnesium oxide (filler) and doping high-molecular water-absorbent resin and utilizing the synergistic effect of the filler and the high-molecular water-absorbent resin; the hydration heat in the early stage of the cement-based waterproof material can be effectively reduced, the shrinkage deformation is reduced, and the temperature difference crack is avoided; the magnesium oxide has excellent expansion performance, can efficiently prolong the expansion time, adjust the expansion rate and effectively compensate the shrinkage rate of concrete, so that the cement-based waterproof material has little shrinkage or no shrinkage, thereby improving the crack resistance of the material; finally, the volume stability and the crack resistance of the cement-based permeable crystalline waterproof material are greatly improved, the defects of large shrinkage, easy cracking, poor durability and the like of the traditional cement-based permeable crystalline waterproof material are overcome, and the real permanent combination and permanent protection of the matrix and the coating are realized. The hydroxypropyl methyl cellulose can also improve the viscosity and the tensile capacity of concrete, and can also improve the water retention capacity, the crack resistance and the like of the cement-based waterproof material.
Preferably, the weight ratio of the filler to the high molecular water-absorbing resin is 8.5-12: 1.
Preferably, the weight ratio of the filler to the high molecular water-absorbing resin is 10: 1.
Preferably, in the filler, the using ratio of the fly ash, the fluorgypsum and the light-burned magnesium oxide is 1:1.5: 3.5.
More preferably, the raw materials comprise, by weight, 60 parts of portland cement, 20 parts of quartz sand, 60 parts of a filler, 6 parts of a high-molecular water-absorbent resin, 5 parts of potassium aluminum sulfate, 6 parts of hydroxypropyl methyl cellulose and 70 parts of water.
More preferably, the fly ash has a loss on ignition of 5% or less, based on 100% by weight of the total fly ash, wherein SiO is 2 The content of (C) is 30-60%, Al 2 O 3 The content of (A) is 20-40%; the loss on ignition of the fluorgypsum is less than or equal to 5 percent, wherein the content of CaO is 20 to 50 percent and the content of SO is 100 percent based on the total weight of the fluorgypsum 3 The content of (A) is 40-70%; the loss on ignition of the light-burned magnesia is less than or equal to 5 percent, and the purity is 85 to 100 percent.
Preferably, the particle size range of the high molecular water-absorbing resin after water absorption and expansion is 3-5 mm.
Compared with the prior art, the invention has the advantages that: according to the invention, the fly ash-fluorgypsum-low-burning magnesium oxide and the high-molecular water-absorbing resin are added into the formula of the cement-based permeable crystalline waterproof material, and a multi-expansion-source slow release technology is formed by utilizing the synergistic effect of the filler and the high-molecular water-absorbing resin, so that the micro-expansion effect is achieved, and the volume stability and the crack resistance of the cement-based permeable crystalline waterproof material are greatly improved. The defects of large shrinkage, easy cracking, poor durability and the like of the traditional cement-based permeable crystalline waterproof material are overcome, and the performances of the waterproof material such as compressive strength, wet base surface bonding strength, impermeability and the like are also obviously improved.
Detailed Description
The technical solutions of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The cement-based waterproof material based on the osmotic crystallization principle provided by the embodiment comprises, by weight, 60 parts of portland cement, 20 parts of quartz sand, 60 parts of a filler, 6 parts of a high-molecular water-absorbent resin, 5 parts of potassium aluminum sulfate, 6 parts of hydroxypropyl methyl cellulose and 70 parts of water. The weight ratio of the filler to the high-molecular water-absorbent resin is 10: 1; in the filler, the weight ratio of the fly ash, the fluorgypsum and the light calcined magnesia is 1:1.5: 3.5.
The preparation method of the cement-based waterproof material of the embodiment comprises the following steps: pouring the high molecular water-absorbing resin into water to enable the high molecular water-absorbing resin to fully absorb water for 30min, then adding the portland cement, quartz sand, filler, aluminum potassium sulfate and hydroxypropyl methyl cellulose, and uniformly stirring.
Example 2
The cement-based waterproof material based on the osmotic crystallization principle provided by the embodiment comprises, by weight, 70 parts of portland cement, 18 parts of quartz sand, 65 parts of a filler, 4 parts of a high-molecular water-absorbent resin, 8 parts of potassium aluminum sulfate, 4 parts of hydroxypropyl methyl cellulose and 60 parts of water. Namely the weight ratio of the filler to the high-molecular water-absorbent resin is 16.25: 1; the weight ratio of fly ash, fluorgypsum and light calcined magnesia in the filler was the same as in example 1. The cement-based waterproof material was prepared in the same manner as in example 1.
Example 3
The cement-based waterproof material based on the osmotic crystallization principle provided by the embodiment comprises, by weight, 40 parts of portland cement, 27 parts of quartz sand, 43 parts of a filler, 10 parts of a high-molecular water-absorbent resin, 4 parts of potassium aluminum sulfate, 8 parts of hydroxypropyl methyl cellulose and 80 parts of water. Namely the weight ratio of the filler to the high-molecular water-absorbent resin is 4.3: 1; the weight ratio of fly ash, fluorgypsum and light calcined magnesia in the filler was the same as in example 1. The preparation method of the cement-based waterproof material is the same as that of example 1.
Example 4
The cement-based waterproof material based on the osmotic crystallization principle provided by the embodiment comprises, by weight, 60 parts of portland cement, 20 parts of quartz sand, 62.4 parts of a filler, 5.2 parts of high-molecular water-absorbent resin, 5 parts of potassium aluminum sulfate, 6 parts of hydroxypropyl methyl cellulose and 70 parts of water. Namely the weight ratio of the filler to the high-molecular water-absorbent resin is 12: 1; the weight ratio of fly ash, fluorgypsum and light calcined magnesia in the filler was the same as in example 1. The preparation method of the cement-based waterproof material is the same as that of example 1.
Example 5
The cement-based waterproof material based on the osmotic crystallization principle provided by the embodiment comprises, by weight, 60 parts of portland cement, 20 parts of quartz sand, 44.2 parts of a filler, 5.2 parts of a high-molecular water-absorbent resin, 5 parts of potassium aluminum sulfate, 6 parts of hydroxypropyl methyl cellulose and 70 parts of water. Namely the weight ratio of the filler to the high-molecular water-absorbent resin is 8.5: 1; the weight ratio of fly ash, fluorgypsum and light calcined magnesia in the filler was the same as in example 1. The preparation method of the cement-based waterproof material is the same as that of example 1.
Example 6
The raw materials of the cement-based waterproof material based on the infiltration crystallization principle provided by the embodiment are the same as those of the embodiment 1; the difference is that the weight ratio of the fly ash, the fluorgypsum and the light calcined magnesia in the filler is 1:2: 3. The cement-based waterproof material was prepared in the same manner as in example 1.
Example 7
The cement-based waterproof material based on the infiltration crystallization principle provided by the embodiment has the same raw materials as those in the embodiment 1, except that the weight ratio of the fly ash, the fluorgypsum and the light-burned magnesia in the filler is 1:1.5: 4. The cement-based waterproof material was prepared in the same manner as in example 1.
Comparative example 1
The cement-based waterproof material based on the osmotic crystallization principle comprises the following raw materials, by weight, 60 parts of portland cement, 20 parts of quartz sand, 100 parts of a filler, 6 parts of high-molecular water-absorbing resin, 5 parts of potassium aluminum sulfate, 6 parts of hydroxypropyl methyl cellulose and 70 parts of water; namely the weight ratio of the filler to the high molecular water-absorbing resin is 16.6: 1; the weight ratio of fly ash, fluorgypsum and light calcined magnesia in the filler was the same as in example 1. The cement-based waterproof material was prepared in the same manner as in example 1.
Comparative example 2
The cement-based waterproof material based on the osmotic crystallization principle comprises the following raw materials, by weight, 60 parts of portland cement, 20 parts of quartz sand, 18 parts of a filler, 6 parts of high-molecular water-absorbing resin, 5 parts of potassium aluminum sulfate, 6 parts of hydroxypropyl methyl cellulose and 70 parts of water; namely the weight ratio of the filler to the high molecular water-absorbing resin is 3: 1; the weight ratio of fly ash, fluorgypsum and light calcined magnesia in the filler was the same as in example 1. The cement-based waterproof material was prepared in the same manner as in example 1.
Comparative example 3
The raw materials of the cement-based waterproof material based on the infiltration crystallization principle provided by the comparative example are the same as those of the cement-based waterproof material in the example 1, except that the filler comprises fly ash, fluorgypsum and light-burned magnesium oxide in a weight ratio of 1:3: 2.5. The cement-based waterproof material was prepared in the same manner as in example 1.
Comparative example 4
The raw materials of the cement-based waterproof material based on the infiltration crystallization principle provided by the comparative example are the same as those of the cement-based waterproof material in the example 1, except that the filler comprises fly ash, fluorgypsum and light-burned magnesia in a weight ratio of 1:1: 4.5. The cement-based waterproof material was prepared in the same manner as in example 1.
Comparative example 5
The cement-based waterproof material based on the infiltration crystallization principle provided by the comparative example does not contain the high molecular water-absorbing resin in the raw materials, other raw materials and the using amount are the same as those in the example 1, and the weight ratio of the fly ash, the fluorgypsum and the light-burned magnesia of the filler is the same as that in the example 1.
The preparation method of the cement-based waterproof material of the comparative example is to pour all the raw materials into water and mix the raw materials evenly.
Application example 1: performance test of cement-based waterproof material based on osmotic crystallization principle
Referring to GB/T18445 and 2012 'cement-based permeable crystalline waterproof material', preparing and selecting a plurality of standard concrete test blocks, and pre-curing for 1 d; respectively coating the cement-based waterproof materials of the embodiment and the comparative example on the surface of a standard concrete test block according to the amount of 1.5kg per square meter required by the national standard, and carrying out testing after soaking and curing for 27 days; meanwhile, the same reference concrete is selected in addition, after pre-curing for 1d, 27d soaking curing is directly carried out, and the first time seepage pressure resistance of each reference concrete test block is tested; and under the standard maintenance, continuously maintaining the underwater belt mold to 56d, and testing the second-time permeation resistance pressure of each reference concrete test block.
And (3) preparing a molded test piece according to SL352-2006 Hydraulic concrete test Specification, coating the cement-based waterproof materials of the examples and the comparative examples on the surface of the molded test piece, curing according to the requirements of the test Specification, and measuring the volume stability of the concrete for 28 d. The test results are shown in table 1 below.
TABLE 1 test results of anti-seepage pressure and volume stability of reference concrete test block
According to the test results in table 1 above, the impermeability of the cement-based waterproof material to the concrete test block can be affected by changing the ratio of the filler to the high molecular water-absorbing resin or by changing the ratio of the fly ash, the fluorgypsum and the light-burned magnesia in the filler. The reason is probably that the content of the high-molecular water-absorbing resin cannot be too much, otherwise, the water absorption is too much, the reaction of fly ash, fluorgypsum and light-burned magnesium oxide in the filler can be influenced, the effects of the fly ash, fluorgypsum and light-burned magnesium oxide on the permeation into a concrete sample to play corresponding micro-expansion and the like are influenced, and the binding force of the reference concrete and the cement-based waterproof material is also influenced; the weight proportion of the fly ash, the fluorgypsum and the light-burned magnesia in the filler is changed, so that the compression resistance and the tensile resistance of the reference concrete are influenced, the later-stage expansion stability is influenced, and the volume stability of the reference concrete is ensured.
Claims (6)
1. A cement-based waterproof material based on a permeation crystallization principle is characterized in that the raw materials comprise, by weight, 40-70 parts of Portland cement, 18-27 parts of quartz sand, 43-65 parts of filler, 4-10 parts of high-molecular water-absorbing resin, 4-8 parts of aluminum potassium sulfate, 4-8 parts of hydroxypropyl methyl cellulose and 60-80 parts of water; the filler is composed of fly ash, fluorgypsum and light-burned magnesium oxide according to the weight ratio of 1:1.5: 3.5.
2. The cement-based waterproof material based on the principle of infiltration crystallization as claimed in claim 1, wherein the weight ratio of the filler to the high molecular water-absorbing resin is 8.5-12: 1.
3. The cement-based waterproof material based on the principle of infiltration crystallization as claimed in claim 1, wherein the weight ratio of the filler to the high molecular water-absorbing resin is 10: 1.
4. The cement-based waterproof material based on the osmotic crystallization principle according to any one of claims 1 to 3, wherein the raw materials comprise, by weight, 60 parts of portland cement, 20 parts of quartz sand, 60 parts of a filler, 6 parts of a high-molecular water-absorbent resin, 5 parts of potassium aluminum sulfate, 6 parts of hydroxypropyl methyl cellulose, and 70 parts of water.
5. The cement-based waterproof material based on the infiltration crystallization principle according to any one of claims 1 to 3, wherein the loss on ignition of the fly ash is 5% or less, based on 100% by weight of the fly ash, wherein SiO is 2 Content of (B) 30-60%, Al 2 O 3 The content of (A) is 20-40%; the loss on ignition of the fluorgypsum is less than or equal to 5 percent, wherein the content of CaO is 20 to 50 percent and the content of SO is 100 percent based on the total weight of the fluorgypsum 3 The content of (A) is 40-70%; the loss on ignition of the light-burned magnesia is less than or equal to 5 percent, and the purity is 85 to 100 percent.
6. The cement-based waterproof material based on the principle of infiltration crystallization as claimed in claim 1, wherein the particle size range of the water-absorbent polymer resin after water absorption and expansion is 3-5 mm.
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| JP6183572B1 (en) * | 2016-03-31 | 2017-08-23 | 三菱マテリアル株式会社 | Quick-hardening cement composition |
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| CN102815883A (en) * | 2012-08-29 | 2012-12-12 | 河南铝城聚能实业有限公司 | Fiber composite capillary-crystalline expanding agent and preparation method thereof |
| CN106866022A (en) * | 2017-03-22 | 2017-06-20 | 长江水利委员会长江科学院 | A kind of interior maintaining anti-cracking concrete impervious agent and preparation method thereof |
| CN111848025A (en) * | 2020-06-19 | 2020-10-30 | 成都新柯力化工科技有限公司 | Capillary crystalline cement-based waterproof coating and preparation method thereof |
| CN112794684A (en) * | 2020-12-31 | 2021-05-14 | 徐州和成建材科技有限公司 | Cement-based permeable crystallization waterproof material |
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