CN111847969A - Cement modifier - Google Patents
Cement modifier Download PDFInfo
- Publication number
- CN111847969A CN111847969A CN201910342357.0A CN201910342357A CN111847969A CN 111847969 A CN111847969 A CN 111847969A CN 201910342357 A CN201910342357 A CN 201910342357A CN 111847969 A CN111847969 A CN 111847969A
- Authority
- CN
- China
- Prior art keywords
- cement
- cement modifier
- modifier
- metakaolin
- weight
- Prior art date
- 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.)
- Pending
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Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The cement modifier is characterized by comprising the following components in percentage by weight: redispersible latex powder: 10% -20%, hydroxypropyl methylcellulose HPMC: 1% -5%, micro silica fume: 40% -60%, metakaolin: 30 to 50 percent. The strength, bonding capability, impermeability and the like of the common cement can be greatly improved by adding the cement modifier.
Description
Technical Field
The invention relates to the technical field of cement chemical industry, in particular to a cement reinforcing modifier.
Background
The cement is a powdery hydraulic inorganic cementing material, is added with water and stirred to form slurry, can be hardened in the air or in water, and can firmly cement aggregates such as sand, stone and the like together; it is used as an important cementing material and widely applied to civil and architectural engineering, water conservancy, national defense and other projects. The types of cement are various, and they are classified into general-purpose cement and special cement according to their uses and properties.
The common cement produced at present can not meet the requirements of special industries, so that the cement modifier capable of improving the grade, the bonding capability, the impermeability and the like of the cement has great production and use values at present.
Disclosure of Invention
Based on the current situation, it is necessary to provide a cement modifier which can greatly improve the technical performance of cement by being added into common cement in order to solve the problems existing in the background technology. The cement modifier is added into cement in an amount of 1-3% of the weight of the cement, and consists of the following components in percentage by weight:
the method can be used for dispersing latex powder: 10 to 20 percent
Hydroxypropyl methylcellulose HPMC: 1 to 5 percent
Micro silica fume: 40 to 60 percent
Metakaolin: 30 to 50 percent
The preparation method comprises the following steps:
accurately weighing various raw materials according to a proportion, adding the silica fume and the metakaolin into a dry mixer, uniformly stirring, slowly adding the dispersible latex powder and the hydroxypropyl methyl cellulose HPMC into a stirrer, and uniformly stirring to obtain the cement modifier. And (3) metering and packaging the uniformly mixed dry cement modifier according to a certain specification, wherein the package has the waterproof and moistureproof functions.
The invention has the following advantages:
1. the invention can greatly improve the grade, the bonding capability, the anti-permeability performance and the like of the common cement by adding the cement modifier.
2. The raw materials are common commercial products, are easy to purchase and are suitable for wide popularization and use.
Detailed Description
The technical scheme of the invention is further described by combining the following embodiments, and all mixing and stirring adopt strong stirring.
Example 1:
firstly, the following steps: adding 47% by weight of silica fume and 40% by weight of metakaolin into a dry mixer, uniformly stirring, slowly adding 10% by weight of dispersible latex powder and 3% by weight of hydroxypropyl methylcellulose HPMC into a stirrer, and uniformly stirring to obtain the cement modifier.
Claims (5)
1. The cement modifier is characterized by comprising the following components in percentage by weight: the method can be used for dispersing latex powder: 10% -20%, hydroxypropyl methylcellulose HPMC: 1% -5%, micro silica fume: 40% -60%, metakaolin: 30 to 50 percent.
2. The cement modifier according to claim 1, wherein the dispersible latex powder is added in an amount of 10-20%.
3. The cement modifier according to claim 1, wherein the hydroxypropyl methylcellulose HPMC is incorporated in an amount of 1-5%.
4. The cement modifier according to claim 1, wherein the content of the microsilica ash is 40-60%.
5. The cement modifier according to claim 1, wherein the metakaolin is added in an amount of 30% to 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910342357.0A CN111847969A (en) | 2019-04-25 | 2019-04-25 | Cement modifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910342357.0A CN111847969A (en) | 2019-04-25 | 2019-04-25 | Cement modifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111847969A true CN111847969A (en) | 2020-10-30 |
Family
ID=72951546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910342357.0A Pending CN111847969A (en) | 2019-04-25 | 2019-04-25 | Cement modifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111847969A (en) |
-
2019
- 2019-04-25 CN CN201910342357.0A patent/CN111847969A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Ying Document name: Notification of Acceptance of Patent Application |
|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20201030 |