CN110818355A - Anti-crack mortar - Google Patents
Anti-crack mortar Download PDFInfo
- Publication number
- CN110818355A CN110818355A CN201911198414.9A CN201911198414A CN110818355A CN 110818355 A CN110818355 A CN 110818355A CN 201911198414 A CN201911198414 A CN 201911198414A CN 110818355 A CN110818355 A CN 110818355A
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- CN
- China
- Prior art keywords
- parts
- crack
- mortar
- crack mortar
- stone powder
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to anti-crack mortar which comprises the following components in parts by weight: 400 parts of cement, 550 parts of machine-made sand, 650 parts of stone powder, 50-80 parts of cellulose ether, 1-1.5 parts of polypropylene fiber and 17-23 parts of redispersible latex powder. The stone powder is added into the mortar, so that the water consumption can be reduced; the polypropylene fiber is added, so that micro cracks caused by factors such as temperature change and the like in the initial plastic shrinkage stage of the mortar can be effectively controlled, the formation and development of cracks are prevented and inhibited, and the crack resistance and permeability resistance of the anti-crack mortar are greatly improved.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to anti-crack mortar.
Background
The crack-resistant mortar is a novel anti-cracking material, solves the problem of light heat-insulating layer fracture which always puzzles the building industry, is a high-quality environment-friendly material with high tensile degree and easy construction and freezing resistance, and can be widely applied to the inner wall and the outer wall of each building. However, the existing anti-crack mortar is easy to cause micro-cracks due to factors such as temperature change and the like in the initial plastic shrinkage stage, the anti-crack and anti-permeability performance of the mortar is influenced, and the high-performance anti-crack mortar is high in cost.
Disclosure of Invention
The invention aims to provide an anti-crack mortar which can effectively prevent micro-cracks caused by factors such as temperature change in the initial plastic shrinkage stage of the mortar and prevent and inhibit the formation and development of cracks.
Therefore, the technical scheme adopted by the invention is that the anti-crack mortar comprises the following components: cement, machine-made sand, stone powder, cellulose ether, polypropylene fiber and redispersible latex powder.
According to one embodiment of the application, the composition comprises the following components in parts by weight: 400 parts of cement, 550 parts of machine-made sand, 650 parts of stone powder, 50-80 parts of cellulose ether, 1-1.5 parts of polypropylene fiber and 17-23 parts of redispersible latex powder.
In the scheme, cement is used as a main cementing material, and the machine-made sand is used as an aggregate. The stone powder is a filler, is complete powder, has small particles, can fill gaps of the aggregate, improves the compactness of the mortar, has the function of improving the supporting strength of the aggregate compared with the filler such as heavy calcium powder or fine silica powder, can improve the compressive strength of the mortar, and can reduce the water consumption.
The renewable dispersed latex powder has extremely outstanding bonding strength and is rubber powder; cellulose ether is water-soluble and solvent-soluble, and is a water-retaining agent. The polypropylene fiber is used as an anti-crack fiber, so that the impact resistance, the water resistance and the heat insulation of the mortar are improved.
Preferably: the polypropylene fiber is polypropylene anti-crack anti-seepage short fiber. The anti-cracking and anti-seepage polypropylene short fiber is a high-strength bundled monofilament organic fiber which is formed by processing fiber-grade polypropylene and has inherent strong acid resistance, strong alkali resistance, weak heat conductivity and extremely stable chemical properties. The additive can effectively control micro-cracks caused by factors such as temperature change and the like in the initial plastic shrinkage stage of the mortar when added into the mortar, prevent and inhibit the formation and development of the cracks, and greatly improve the crack resistance and permeability resistance of the mortar.
Preferably: the grain diameter of the machine-made sand is 50-150 meshes.
Preferably: the stone powder is collected by dust collecting equipment during production of machine-made sand, and the particle size of the stone powder is 250-400 meshes. Can utilize subsidiary products for producing the machine-made sand and change waste into valuable.
Preferably: the cement is ordinary portland cement and has a strength grade of 42.5.
Preferably: the cellulose ether is hydroxypropyl methyl cellulose ether. The water retention property of the hydroxypropyl methyl cellulose HPMC enables the sizing agent not to crack because of drying too fast after being coated, and enhances the strength after hardening.
The invention has the beneficial effects that: the stone powder is added into the mortar, so that the water consumption can be reduced; the polypropylene fiber is added, so that micro cracks caused by factors such as temperature change and the like in the initial plastic shrinkage stage of the mortar can be effectively controlled, the formation and development of cracks are prevented and inhibited, and the crack resistance and permeability resistance of the mortar are greatly improved.
Detailed Description
The present invention is further illustrated by the following examples.
Example 1
The anti-crack mortar is prepared by uniformly mixing 300 parts by weight of 42.5-grade ordinary portland cement, 550 parts by weight of 50-150-mesh machine-made sand, 50 parts by weight of 250-400-mesh stone powder, 2.5 parts by weight of hydroxypropyl methyl cellulose ether, 1 part by weight of polypropylene anti-crack anti-seepage short fiber and 17 parts by weight of redispersible latex powder.
Example 2
The anti-crack mortar is prepared by uniformly mixing 400 parts by weight of 42.5-grade ordinary portland cement, 650 parts by weight of 50-150-mesh machine-made sand, 80 parts by weight of 250-mesh 400-mesh stone powder, 3.5 parts by weight of hydroxypropyl methyl cellulose ether, 1.5 parts by weight of polypropylene anti-crack anti-seepage short fibers and 23 parts by weight of redispersible latex powder.
Example 3
The anti-cracking mortar is prepared by uniformly mixing 350 parts by weight of 42.5-grade ordinary portland cement, 600 parts by weight of 50-150-mesh machine-made sand, 60 parts by weight of 250-400-mesh stone powder, 3 parts by weight of hydroxypropyl methyl cellulose ether, 1.2 parts by weight of polypropylene anti-cracking anti-seepage short fibers and 20 parts by weight of redispersible latex powder.
Example 4
An anti-crack mortar is prepared by uniformly mixing 380 parts of 42.5-grade ordinary portland cement, 620 parts of 50-150 mesh machine-made sand, 70 parts of 250-400 mesh stone powder, 3.2 parts of hydroxypropyl methyl cellulose ether, 1.4 parts of polypropylene anti-crack anti-seepage short fibers and 21 parts of redispersible latex powder.
The performance of the anti-crack mortar prepared in the above examples 1 to 4 was tested according to the anti-crack mortar testing method in the standard of the industry standard JG/T158-2013 "rubber powder polyphenyl particle external wall insulation system material", and the performance test results are listed in Table 1.
TABLE 1
From the table 1, it can be obtained that the anti-crack mortars prepared in the embodiments 1 to 4 all meet the industrial standard JG/T158-2013 "rubber powder polyphenyl particle external wall thermal insulation system material".
Claims (7)
1. The anti-crack mortar is characterized by comprising the following components: cement, machine-made sand, stone powder, cellulose ether, polypropylene fiber and redispersible latex powder.
2. The anti-crack mortar according to claim 1, which comprises the following components in parts by weight: 400 parts of cement, 550 parts of machine-made sand, 650 parts of stone powder, 50-80 parts of cellulose ether, 1-1.5 parts of polypropylene fiber and 17-23 parts of redispersible latex powder.
3. The anti-crack mortar according to claim 2, wherein: the polypropylene fiber is polypropylene anti-crack anti-seepage short fiber.
4. The anti-crack mortar according to claim 3, wherein: the grain diameter of the machine-made sand is 50-150 meshes.
5. The anti-crack mortar according to claim 3, wherein: the stone powder is collected by dust collecting equipment during production of machine-made sand, and the particle size of the stone powder is 250-400 meshes.
6. The anti-crack mortar according to claim 3, wherein: the cement is ordinary portland cement and has a strength grade of 42.5.
7. The anti-crack mortar according to claim 3, wherein: the cellulose ether is hydroxypropyl methyl cellulose ether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911198414.9A CN110818355A (en) | 2019-11-29 | 2019-11-29 | Anti-crack mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911198414.9A CN110818355A (en) | 2019-11-29 | 2019-11-29 | Anti-crack mortar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110818355A true CN110818355A (en) | 2020-02-21 |
Family
ID=69543218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911198414.9A Pending CN110818355A (en) | 2019-11-29 | 2019-11-29 | Anti-crack mortar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110818355A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113912362A (en) * | 2021-11-11 | 2022-01-11 | 江苏绿和环境科技有限公司 | Building slurry curing treatment process |
| CN113929420A (en) * | 2021-11-11 | 2022-01-14 | 江苏绿和环境科技有限公司 | Regenerated light bottom plastering gypsum mortar |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102276205A (en) * | 2011-06-27 | 2011-12-14 | 武汉三源特种建材有限责任公司 | Swelling crack resistant mortar |
| US20170022110A1 (en) * | 2013-12-06 | 2017-01-26 | S. A. Lhoist Recherche Et Developpement | Binder Composition for Improved Mortars and Coatings |
| CN107162532A (en) * | 2017-07-05 | 2017-09-15 | 合肥市片叶装饰工程有限公司 | A kind of water proof anti-seepage anticracking grout and preparation method thereof |
| CN108863223A (en) * | 2018-07-23 | 2018-11-23 | 厦门高辰建筑科技有限公司 | Anticracking grout and preparation method thereof |
-
2019
- 2019-11-29 CN CN201911198414.9A patent/CN110818355A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102276205A (en) * | 2011-06-27 | 2011-12-14 | 武汉三源特种建材有限责任公司 | Swelling crack resistant mortar |
| US20170022110A1 (en) * | 2013-12-06 | 2017-01-26 | S. A. Lhoist Recherche Et Developpement | Binder Composition for Improved Mortars and Coatings |
| CN107162532A (en) * | 2017-07-05 | 2017-09-15 | 合肥市片叶装饰工程有限公司 | A kind of water proof anti-seepage anticracking grout and preparation method thereof |
| CN108863223A (en) * | 2018-07-23 | 2018-11-23 | 厦门高辰建筑科技有限公司 | Anticracking grout and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113912362A (en) * | 2021-11-11 | 2022-01-11 | 江苏绿和环境科技有限公司 | Building slurry curing treatment process |
| CN113929420A (en) * | 2021-11-11 | 2022-01-14 | 江苏绿和环境科技有限公司 | Regenerated light bottom plastering gypsum mortar |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200221 |