CN115477522A - Anti-cracking self-repairing cement-based waterproof material and preparation method thereof - Google Patents
Anti-cracking self-repairing cement-based waterproof material and preparation method thereof Download PDFInfo
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- CN115477522A CN115477522A CN202110667603.7A CN202110667603A CN115477522A CN 115477522 A CN115477522 A CN 115477522A CN 202110667603 A CN202110667603 A CN 202110667603A CN 115477522 A CN115477522 A CN 115477522A
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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
- C04B28/06—Aluminous 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
-
- 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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 an anti-cracking self-repairing cement-based waterproof material and a preparation method thereof, wherein the anti-cracking self-repairing cement-based waterproof material comprises the following raw materials in parts by weight: the cracking-resistant self-repairing cement-based waterproof material is characterized by comprising the following raw materials in parts by weight: 20-30 parts of cement; 25-40 parts of quartz sand; 5-10 parts of a filler; 7-9 parts of a microbial solution; 8-12 parts of a porous material; 2-5 parts of calcium lactate; 1-2 parts of urea; 18-23 parts of redispersible rubber powder; 1-2 parts of a dry powder auxiliary agent. The microorganisms in the waterproof material can react with calcium ions in the presence of moisture in the environment with nutrients to produce crystals which are insoluble in water, can effectively block cracks generated in the later period of the waterproof layer, adsorb the microorganisms in the porous material, can keep activity in the cement-based waterproof layer for a long time under the wrapping of a polymer macromolecular chain formed by redispersible rubber powder, has strong self-repairing and anti-cracking capabilities, and greatly prolongs the effective service life of the waterproof layer.
Description
Technical Field
The invention relates to the field of building materials, in particular to a crack-resistant self-repairing cement-based waterproof material and a preparation method thereof.
Background
At present, both buildings with concrete structures and constructions thereof have water seepage and leakage phenomena, the requirements on the waterproofing of the buildings and the constructions thereof are higher and higher, and the selection of waterproofing materials by construction parties and construction parties is also very important.
The waterproof materials on the market at present are of various types, common types include waterproof coiled materials, polymer cement waterproof coatings, polyurethane waterproof coatings, single-component acrylic waterproof coatings, water-emulsion asphalt waterproof coatings and polymer emulsion waterproof coatings, and different waterproof materials are often used for different engineering positions. However, not only cause the loaded down with trivial details complicacy of construction process like this, the phenomenon that construction operation is nonstandard appears easily, and the adhesion between the different waterproof material is poor moreover, and the waterproof layer just can form the seepage hidden danger in the use in later stage very probably.
Disclosure of Invention
In order to solve the problems, the invention provides a tough type cement-based waterproof material capable of automatically repairing cracks generated in the material, which has the characteristics of high bonding strength, good water-resistant impermeability and high early strength, and has the characteristics of wide application, strong self-repairing capability and long service life compared with other traditional waterproof materials.
The invention aims to provide a crack-resistant self-repairing cement-based waterproof material which can generate crystals by itself to repair cracks generated in a waterproof layer.
The invention also aims to provide a preparation method of the anti-cracking self-repairing cement-based waterproof material.
The invention is realized by the following technical scheme:
the crack-resistant self-repairing cement-based waterproof material comprises the following raw materials in parts by weight:
20-30 parts of cement
25-40 parts of quartz sand
5-10 parts of filler
7-9 parts of microbial solution
8-12 parts of porous material
2-5 parts of calcium lactate
1-2 parts of urea
Redispersible rubber powder 18-23 weight portions
1-2 parts of a dry powder auxiliary agent.
Preferably, the feed comprises the following raw materials in parts by weight:
23 portions of cement
29 parts of quartz sand
5 portions of filler
8 parts of microbial solution
Porous material 10 parts
3 portions of calcium lactate
2 portions of urea
Redispersible rubber powder 19 parts
1 part of dry powder auxiliary agent;
preferably, the method is characterized in that: the cement is one or more of ordinary Portland cement with the strength of more than 42.5R and quick-hardening sulphoaluminate cement with the strength of more than 42.5R;
preferably, the quartz sand is 70-140 meshes of quartz sand, and the mud content is less than 0.5%;
preferably, the filler is one or more of fly ash, silica fume, granulated blast furnace slag, ground calcium carbonate, talcum powder and mica powder;
preferably, the microorganism solution is one or more of bacillus pasteurianus, sarcina pasteurianus, bacillus sphaericus, nitrate reducing bacteria and sulfate reducing bacteria;
preferably, the porous material is one or more of zeolite, graphite nanosheets, ceramsite, diatomite, expanded perlite and glass beads;
preferably, the redispersible rubber powder is one or more of vinyl acetate and ethylene copolymer latex powder, ethylene, vinyl chloride and vinyl laurate terpolymer latex powder, acrylate and styrene copolymer latex powder, and vinyl acetate and higher fatty acid vinyl ester copolymer latex powder;
preferably, the dry powder auxiliary agent is one or more of a high-efficiency water reducing agent, a powder defoaming agent, an accelerating agent, cellulose ether, a thixotropic lubricant and starch ether.
A preparation method of the crack-resistant self-repairing cement-based waterproof material comprises the following steps:
s1, uniformly mixing microorganisms and a porous material at 25-45 ℃, adding a proper amount of purified water, stirring at a rotating speed of 150-200r/min for 15-20min, and standing for 20-25min;
s2, drying the preparation liquid of the S1 at the temperature of 25-45 ℃ to obtain a microorganism self-repairing agent A;
s3, uniformly mixing cement, quartz sand, a filler, calcium lactate, urea and redispersible rubber powder to obtain powder B;
and S4, adding the microbial self-repairing agent A into the powder B, and uniformly stirring to obtain the microbial self-repairing agent.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) The crack-resistant self-repairing cement-based waterproof material disclosed by the invention can generate compact crystals due to mineralization reaction after encountering moisture in the air, so that cracks generated in a waterproof layer can be repaired automatically, the durability of the waterproof layer is improved, and the service life of the waterproof layer is prolonged;
(2) According to the anti-cracking self-repairing cement-based waterproof material disclosed by the invention, a porous material is used for adsorbing and immobilizing microorganisms, and after film formation, the activity can be kept in a cement-based waterproof layer for a long time under the wrapping of a polymer macromolecular chain formed by redispersible rubber powder, so that the recovery rate of the repaired waterproof material is up to 100%.
Detailed Description
The invention will now be further described with reference to specific embodiments, but only a few examples have been given by way of illustration in numerous experiments by the applicant, and the scope of the claimed invention is not limited thereto.
Example 1:
the crack-resistant self-repairing cement-based waterproof material comprises the following raw materials in parts by weight:
23 portions of cement
29 parts of quartz sand
5 portions of filler
8 parts of microbial solution
Porous material 10 parts
3 portions of calcium lactate
2 portions of urea
Redispersible rubber powder 19 parts
1 part of dry powder auxiliary agent;
the cement is ordinary portland cement and quick-hardening sulphoaluminate cement, the adding mass ratio is 3;
the preparation method of the anti-cracking self-repairing cement-based waterproof material comprises the following steps:
s1, uniformly mixing microorganisms and a porous material at 25-45 ℃, adding a proper amount of purified water, stirring at a rotating speed of 150-200r/min for 15-20min, and standing for 20-25min;
s2, drying the preparation liquid of the S1 at the temperature of 25-45 ℃ to obtain a microorganism self-repairing agent A;
s3, uniformly mixing cement, quartz sand, a filler, calcium lactate, urea and redispersible rubber powder to obtain powder B;
and S4, adding the microbial self-repairing agent A into the powder B, and uniformly stirring to obtain the microbial self-repairing agent.
Example 2:
the crack-resistant self-repairing cement-based waterproof material comprises the following raw materials in parts by weight:
23 portions of cement
27 parts of quartz sand
5 portions of filler
8 parts of microbial solution
Porous material 10 parts
3 portions of calcium lactate
2 portions of urea
Redispersible rubber powder 21 parts
1 part of dry powder auxiliary agent;
the cement is ordinary portland cement and quick-hardening sulphoaluminate cement, the adding mass ratio is 3;
the preparation method of the anti-cracking self-repairing cement-based waterproof material comprises the following steps:
s1, uniformly mixing microorganisms and a porous material at 25-45 ℃, adding a proper amount of purified water, stirring at a rotating speed of 150-200r/min for 15-20min, and standing for 20-25min;
s2, drying the preparation liquid of the S1 at the temperature of 25-45 ℃ to obtain a microorganism self-repairing agent A;
s3, uniformly mixing cement, quartz sand, a filler, calcium lactate, urea and redispersible rubber powder to obtain powder B;
and S4, adding the microbial self-repairing agent A into the powder B, and uniformly stirring to obtain the microbial self-repairing agent.
Example 3:
the crack-resistant self-repairing cement-based waterproof material comprises the following raw materials in parts by weight:
23 portions of cement
25 parts of quartz sand
5 portions of filler
8 parts of microbial solution
Porous material 10 parts
3 portions of calcium lactate
2 portions of urea
Redispersible rubber powder 23 parts
1 part of dry powder auxiliary agent
The cement is ordinary portland cement and quick-hardening sulphoaluminate cement, the adding mass ratio is 3;
the preparation method of the anti-cracking self-repairing cement-based waterproof material comprises the following steps:
s1, uniformly mixing microorganisms and a porous material at 25-45 ℃, adding a proper amount of purified water, stirring at a rotating speed of 150-200r/min for 15-20min, and standing for 20-25min;
s2, drying the preparation liquid of the S1 at the temperature of 25-45 ℃ to obtain a microorganism self-repairing agent A;
s3, uniformly mixing cement, quartz sand, a filler, calcium lactate, urea and redispersible rubber powder to obtain powder B;
and S4, adding the microbial self-repairing agent A into the powder B, and uniformly stirring to obtain the microbial self-repairing agent.
Example 4:
the anti-cracking self-repairing cement-based waterproof material comprises the following raw materials in parts by weight:
23 portions of cement
23 parts of quartz sand
5 portions of filler
8 parts of microbial solution
10 portions of porous material
3 portions of calcium lactate
2 portions of urea
Redispersible rubber powder 25 parts
1 part of dry powder auxiliary agent;
the cement is ordinary portland cement and quick-hardening sulphoaluminate cement, the adding mass ratio is 3;
the preparation method of the anti-cracking self-repairing cement-based waterproof material comprises the following steps:
s1, uniformly mixing microorganisms and a porous material at 25-45 ℃, adding a proper amount of purified water, stirring at a rotating speed of 150-200r/min for 15-20min, and standing for 20-25min;
s2, drying the preparation liquid of the S1 at the temperature of 25-45 ℃ to obtain a microorganism self-repairing agent A;
s3, uniformly mixing cement, quartz sand, a filler, calcium lactate, urea and redispersible rubber powder to obtain powder B;
and S4, adding the microbial self-repairing agent A into the powder B, and uniformly stirring to obtain the microbial self-repairing agent.
Example 5:
the anti-cracking self-repairing cement-based waterproof material comprises the following raw materials in parts by weight:
23 portions of cement
21 parts of quartz sand
5 portions of filler
8 parts of microbial solution
Porous material 10 parts
3 portions of calcium lactate
2 portions of urea
Redispersible rubber powder 27 parts
1 part of dry powder auxiliary agent;
the cement is ordinary portland cement and quick-hardening sulphoaluminate cement, the adding mass ratio is 3;
the preparation method of the anti-cracking self-repairing cement-based waterproof material comprises the following steps:
s1, uniformly mixing microorganisms and a porous material at 25-45 ℃, adding a proper amount of purified water, stirring at a rotating speed of 150-200r/min for 15-20min, and standing for 20-25min;
s2, drying the preparation liquid of the S1 at the temperature of 25-45 ℃ to obtain a microorganism self-repairing agent A;
s3, uniformly mixing cement, quartz sand, a filler, calcium lactate, urea and redispersible rubber powder to obtain powder B;
and S4, adding the microbial self-repairing agent A into the powder B, and uniformly stirring to obtain the microbial self-repairing agent.
And (3) performance testing:
after the anti-cracking self-repairing cement-based waterproof materials and tap water in the examples 1-5 are respectively mixed and stirred uniformly according to the mass ratio of 10, the following items are detected, and the national standard number is GB/T23445-2009, wherein when the impermeability is tested, a 1 cm-long fine seam is scribed in the middle of a film of the prepared impermeability test piece by using an art knife, and then the maintenance test is carried out according to the standard, and the detection results are shown in Table 1.
The results show that the anti-cracking self-repairing cement-based waterproof material of the patent product has the performance meeting the requirements of GB/T23445-2009 Polymer Cement waterproof coating, has the characteristics of good self-repairing capability and anti-cracking performance, meets the requirements of building waterproof application on cement-based waterproof materials, and has good development prospects.
Claims (10)
1. The anti-cracking self-repairing cement-based waterproof material is characterized by comprising the following raw materials in parts by weight:
20-30 parts of cement
25-40 parts of quartz sand
5-10 parts of filler
7-9 parts of microbial solution
8-12 parts of porous material
2-5 parts of calcium lactate
1-2 parts of urea
Redispersible rubber powder 18-23 weight portions
1-2 parts of dry powder auxiliary agent.
2. The anti-cracking self-repairing cement-based waterproof material as claimed in claim 1, characterized by comprising the following raw materials in parts by weight:
23 portions of cement
29 portions of quartz sand
5 portions of filler
8 parts of microbial solution
10 portions of porous material
3 portions of calcium lactate
2 portions of urea
Redispersible rubber powder 19 parts
And 1 part of dry powder auxiliary agent.
3. The crack-resistant self-repairing cement-based waterproof material as claimed in claim 1, characterized in that: the cement is one or more of ordinary Portland cement with the strength of more than 42.5R and quick-hardening sulphoaluminate cement with the strength of more than 42.5R.
4. The crack-resistant self-repairing cement-based waterproof material as claimed in claim 1, wherein: the quartz sand is 70-140 meshes, and the mud content is less than 0.5%.
5. The crack-resistant self-repairing cement-based waterproof material as claimed in claim 1, wherein: the filler is one or more of fly ash, silica fume, granulated blast furnace slag, ground limestone, talcum powder and mica powder.
6. The crack-resistant self-repairing cement-based waterproof material as claimed in claim 1, wherein: the microbial solution is one or more of bacillus pasteurii, sarcina pasteurii, bacillus sphaericus, nitrate reducing bacteria and sulfate reducing bacteria.
7. The crack-resistant self-repairing cement-based waterproof material as claimed in claim 1, characterized in that: the porous material is one or more of zeolite, graphite nanosheets, ceramsite, diatomite, expanded perlite and glass beads.
8. The crack-resistant self-repairing cement-based waterproof material as claimed in claim 1, characterized in that: the redispersible rubber powder is one or more of vinyl acetate and ethylene copolymer latex powder, ethylene, vinyl chloride and vinyl laurate ternary copolymer latex powder, acrylate and styrene copolymer latex powder, and vinyl acetate and higher fatty acid vinyl ester copolymer latex powder.
9. The crack-resistant self-repairing cement-based waterproof material as claimed in claim 1, wherein: the dry powder auxiliary agent is one or more of a high-efficiency water reducing agent, a powder defoaming agent, an accelerating agent, cellulose ether, a thixotropic lubricant and starch ether.
10. A method for preparing the crack-resistant self-repairing cement-based waterproof material as claimed in any one of claims 1 to 9, which comprises the following steps:
s1, uniformly mixing microorganisms and a porous material at 25-45 ℃, adding a proper amount of purified water, stirring at a rotating speed of 150-200r/min for 15-20min, and standing for 20-25min;
s2, drying the preparation liquid of the S1 at the temperature of 25-45 ℃ to obtain a microorganism self-repairing agent A;
s3, uniformly mixing cement, quartz sand, a filler, calcium lactate, urea and redispersible rubber powder to obtain powder B;
and S4, adding the microbial self-repairing agent A into the powder B, and uniformly stirring to obtain the microbial self-repairing agent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110667603.7A CN115477522A (en) | 2021-06-16 | 2021-06-16 | Anti-cracking self-repairing cement-based waterproof material and preparation method thereof |
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| CN202110667603.7A CN115477522A (en) | 2021-06-16 | 2021-06-16 | Anti-cracking self-repairing cement-based waterproof material and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107540304A (en) * | 2017-08-17 | 2018-01-05 | 科顺防水科技股份有限公司 | A kind of composite cement base osmotic crystalline waterproof material |
| US20180072624A1 (en) * | 2015-03-31 | 2018-03-15 | Shenzhen University | Microcapsule for self-healing concrete and preparation method thereof, and self-healing concrete and preparation method thereof |
| CN112142409A (en) * | 2020-09-27 | 2020-12-29 | 长安大学 | Microbial self-healing waterproof anti-permeability mortar and preparation method thereof |
-
2021
- 2021-06-16 CN CN202110667603.7A patent/CN115477522A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180072624A1 (en) * | 2015-03-31 | 2018-03-15 | Shenzhen University | Microcapsule for self-healing concrete and preparation method thereof, and self-healing concrete and preparation method thereof |
| CN107540304A (en) * | 2017-08-17 | 2018-01-05 | 科顺防水科技股份有限公司 | A kind of composite cement base osmotic crystalline waterproof material |
| CN112142409A (en) * | 2020-09-27 | 2020-12-29 | 长安大学 | Microbial self-healing waterproof anti-permeability mortar and preparation method thereof |
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