CN112897926A - Saltpetering inhibitor for portland cement - Google Patents
Saltpetering inhibitor for portland cement Download PDFInfo
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- CN112897926A CN112897926A CN202110204433.9A CN202110204433A CN112897926A CN 112897926 A CN112897926 A CN 112897926A CN 202110204433 A CN202110204433 A CN 202110204433A CN 112897926 A CN112897926 A CN 112897926A
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- portland cement
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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
- 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
Abstract
The invention discloses a saltpetering inhibitor for portland cement, which at least comprises carbon nano tubes, activated carbon powder, diatomite powder, oxalic acid, slag powder, latex powder, ferrous sulfate and bentonite in parts by weight, and the saltpetering inhibitor at least comprises 1-2 parts of carbon nano tubes, 10-15 parts of activated carbon powder, 10-15 parts of diatomite powder, 7-10 parts of oxalic acid, 5-8 parts of slag powder, 3-5 parts of latex powder, 3-5 parts of ferrous sulfate and 10-15 parts of bentonite, and further comprises: acetone, cellulose ether, zeolite powder, benzoic acid, starch ether, calcium formate and triisopropanolamine. The invention can obviously improve the efflorescence resistance and durability of the cement base material under the condition of ensuring that the performance of the cement mortar and the concrete cement base material is not reduced or improved, thereby greatly improving the quality of buildings, the aesthetic feeling of appearance and the durability.
Description
Technical Field
The invention relates to the technical field of cement, in particular to a saltpetering inhibitor for portland cement.
Background
The main reason why wall surface efflorescence is commonly called cement frosting is that the cement product calcium hydroxide reacts with carbon dioxide in the atmosphere to generate calcium carbonate which is deposited on the surface of a concrete product. Or is as follows: in the hydration product calcium hydroxide solution, when water evaporates, calcium hydroxide crystallizes in the concrete crevices and collects on its surface. In addition, limestone or building sand contains a certain amount of soluble alkali-containing organic substances, and hydroxide, carbonate or other alkali salt solutions formed from these substances easily and rapidly exude "frost salt" on the concrete surface to form frost. The surface of a common portland cement product is easy to be whiskered, the appearance of the cement product is affected, and if banded white spots exist, Ca2+ and Mg2+ in the cement migrate to the surface of the cement product along with moisture, so that an inhibitor for improving the strength of the cement and inhibiting the whiskering phenomenon is absent at present.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
The present invention has been made to solve the above problems occurring in the prior art, and an object of the present invention is to provide a saltpetering inhibitor for portland cement.
In order to achieve the purpose, the invention provides the following technical scheme: a saltpetering inhibitor for portland cement comprises a saltpetering inhibitor at least comprising carbon nano tubes, activated carbon powder, diatomite powder, oxalic acid, slag powder, latex powder, ferrous sulfate and bentonite.
Further, the whiskering inhibitor at least comprises, by weight, 1-2 parts of carbon nanotubes, 10-15 parts of activated carbon powder, 10-15 parts of diatomite powder, 7-10 parts of oxalic acid, 5-8 parts of slag powder, 3-5 parts of latex powder, 3-5 parts of ferrous sulfate and 10-15 parts of bentonite.
Further, the cement whiskering inhibitor further comprises: acetone, cellulose ether, zeolite powder, benzoic acid, starch ether, calcium formate and triisopropanolamine.
Further, the acetone, the cellulose ether, the zeolite powder, the benzoic acid, the starch ether, the calcium formate and the triisopropanolamine are respectively 0.1-0.3 part of acetone, 0.1-0.3 part of cellulose ether, 1-2 parts of zeolite powder, 1-2 parts of benzoic acid, 0.2-0.3 part of starch ether, 1-2 parts of calcium formate and 0.1-0.3 part of triisopropanolamine in parts by weight.
Further, the mass ratio of the saltpetering inhibitor to the ordinary portland cement is 0.2-0.5: 100.
Further, the cellulose ether is one of carboxymethyl cellulose, ethyl cellulose, benzyl cellulose and hydroxyethyl cellulose.
Further, the activated carbon powder, the diatomite powder, the slag powder, the latex powder and the bentonite are all powder with more than 200 meshes.
Compared with the prior art, the invention has the following beneficial effects: the saltpetering inhibitor for the portland cement provided by the invention can obviously improve the saltpetering resistance and the durability of a cement base material under the condition of ensuring that the performances of the cement mortar and a concrete cement base material are not reduced or are improved, so that the quality, the appearance, the aesthetic feeling and the durability of a building are greatly improved.
Detailed Description
The invention will be further described with reference to specific embodiments:
the saltpetering inhibitor for the portland cement comprises, by weight, at least 2 parts of carbon nanotubes, 10 parts of activated carbon powder, 15 parts of diatomite powder, 10 parts of oxalic acid, 5 parts of slag powder, 5 parts of latex powder, 3 parts of ferrous sulfate and 10 parts of bentonite, and further comprises the following components: 0.3 part of acetone, 0.2 part of cellulose ether, 1 part of zeolite powder, 1 part of benzoic acid, 0.2 part of starch ether, 2 parts of calcium formate and 0.1 part of triisopropanolamine, wherein the mass ratio of the whiskering inhibitor to the ordinary portland cement is 0.2-0.5: 100.
Specifically, grinding active carbon powder, diatomite powder, slag powder, latex powder and bentonite into powder with the particle size of more than 200 meshes by a ball grinder, weighing 2 parts of carbon nano tube, 10 parts of active carbon powder, 15 parts of diatomite powder, 10 parts of oxalic acid, 5 parts of slag powder and 5 parts of latex powder, 3 parts of ferrous sulfate, 10 parts of bentonite, 0.3 part of acetone, 0.2 part of cellulose ether, 1 part of zeolite powder, 1 part of benzoic acid, 0.2 part of starch ether, 2 parts of calcium formate and 0.1 part of triisopropanolamine, fully mixing the raw materials by using a screw mixer, adding the obtained mixture into cement according to the mass ratio of the whiskering inhibitor to the ordinary portland cement of 0.2-0.5:100, and fully mixing to perform construction, thereby remarkably improving the whiskering resistance and durability of the cement base material, and greatly improving the quality, aesthetic feeling of appearance and durability of a building.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The saltpetering inhibitor for the portland cement is characterized by at least comprising carbon nano tubes, activated carbon powder, diatom shale powder, oxalic acid, slag powder, latex powder, ferrous sulfate and bentonite.
2. The saltpetering inhibitor for portland cement according to claim 1, wherein the saltpetering inhibitor at least comprises, by weight, 1-2 parts of carbon nanotubes, 10-15 parts of activated carbon powder, 10-15 parts of diatomite powder, 7-10 parts of oxalic acid, 5-8 parts of slag powder, 3-5 parts of latex powder, 3-5 parts of ferrous sulfate and 10-15 parts of bentonite.
3. The saltpetering inhibitor for portland cement according to claim 1, further comprising: acetone, cellulose ether, zeolite powder, benzoic acid, starch ether, calcium formate and triisopropanolamine.
4. The saltpetering inhibitor for portland cement as claimed in claim 3, wherein the acetone, cellulose ether, zeolite powder, benzoic acid, starch ether, calcium formate and triisopropanolamine are respectively 0.1-0.3 part by weight of acetone, 0.1-0.3 part by weight of cellulose ether, 1-2 parts by weight of zeolite powder, 1-2 parts by weight of benzoic acid, 0.2-0.3 part by weight of starch ether, 1-2 parts by weight of calcium formate and 0.1-0.3 part by weight of triisopropanolamine.
5. The saltpetering inhibitor for portland cement according to claim 1, wherein the mass ratio of the saltpetering inhibitor to ordinary portland cement is 0.2-0.5: 100.
6. The saltpetering inhibitor for portland cement of claim 1, wherein the cellulose ether is one of carboxymethyl cellulose, ethyl cellulose, benzyl cellulose, and hydroxyethyl cellulose.
7. The saltpetering inhibitor for portland cement according to claim 1, wherein the activated carbon powder, the diatomite powder, the slag powder, the latex powder and the bentonite are all powders of 200 meshes or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110204433.9A CN112897926A (en) | 2021-02-23 | 2021-02-23 | Saltpetering inhibitor for portland cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110204433.9A CN112897926A (en) | 2021-02-23 | 2021-02-23 | Saltpetering inhibitor for portland cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112897926A true CN112897926A (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110204433.9A Pending CN112897926A (en) | 2021-02-23 | 2021-02-23 | Saltpetering inhibitor for portland cement |
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| CN (1) | CN112897926A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113831059A (en) * | 2021-11-11 | 2021-12-24 | 广西汉华建筑设计有限公司 | Admixture for cement products |
| CN114907049A (en) * | 2022-05-26 | 2022-08-16 | 四川能投建工集团有限公司 | Alkali slag cement saltpetering inhibitor and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107162456A (en) * | 2017-05-08 | 2017-09-15 | 济南大学 | A kind of alkali slag cement accumulation of salt in the surface soil inhibitor and preparation method thereof |
| CN107651879A (en) * | 2017-10-30 | 2018-02-02 | 李建连 | A kind of cement accumulation of salt in the surface soil inhibitor |
| KR101832164B1 (en) * | 2017-09-06 | 2018-02-27 | 리플래시기술 주식회사 | Self-healing eco-friendly cement mortar composition for repairing structure and repairing method of structure therewith |
| CN112062525A (en) * | 2020-10-29 | 2020-12-11 | 华润水泥技术研发有限公司 | Saltpetering inhibitor for ordinary portland cement |
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2021
- 2021-02-23 CN CN202110204433.9A patent/CN112897926A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107162456A (en) * | 2017-05-08 | 2017-09-15 | 济南大学 | A kind of alkali slag cement accumulation of salt in the surface soil inhibitor and preparation method thereof |
| KR101832164B1 (en) * | 2017-09-06 | 2018-02-27 | 리플래시기술 주식회사 | Self-healing eco-friendly cement mortar composition for repairing structure and repairing method of structure therewith |
| CN107651879A (en) * | 2017-10-30 | 2018-02-02 | 李建连 | A kind of cement accumulation of salt in the surface soil inhibitor |
| CN112062525A (en) * | 2020-10-29 | 2020-12-11 | 华润水泥技术研发有限公司 | Saltpetering inhibitor for ordinary portland cement |
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| 薛守庆，马远忠，马心英编著: "《缓蚀剂的应用》", 30 June 2019, 哈尔滨工程大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113831059A (en) * | 2021-11-11 | 2021-12-24 | 广西汉华建筑设计有限公司 | Admixture for cement products |
| CN114907049A (en) * | 2022-05-26 | 2022-08-16 | 四川能投建工集团有限公司 | Alkali slag cement saltpetering inhibitor and preparation method thereof |
| CN114907049B (en) * | 2022-05-26 | 2023-05-02 | 四川能投建工集团有限公司 | Alkali slag cement whiskering inhibitor and preparation method thereof |
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