CN111320410A - Enhanced cement retarder and preparation method thereof - Google Patents
Enhanced cement retarder and preparation method thereof Download PDFInfo
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- CN111320410A CN111320410A CN202010207035.8A CN202010207035A CN111320410A CN 111320410 A CN111320410 A CN 111320410A CN 202010207035 A CN202010207035 A CN 202010207035A CN 111320410 A CN111320410 A CN 111320410A
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- sodium
- borax
- cement retarder
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- tartaric acid
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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
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
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- 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 invention discloses an enhanced cement retarder and a preparation method thereof, wherein the enhanced cement retarder comprises the following raw materials in percentage by weight: 16-28% of sodium lignosulfonate, 3-7% of borax, 20-35% of inorganic phosphate, 10-15% of organic phosphonic acid, 5-8% of tartaric acid and the balance of deionized water, wherein the total amount is 100%; the preparation method comprises the following steps: firstly, adding deionized water into a reaction kettle with a stirring device; weighing sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphate and tartaric acid according to the formula ratio by using a weighing device; then, sequentially adding sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphoric acid and tartaric acid into the reaction kettle through a feeder, and uniformly stirring; according to the enhanced cement retarder and the preparation method thereof, sodium lignosulfonate with salt-resistant and calcium-resistant sulfonate groups is used in a compounding manner with inorganic phosphate and organic phosphonic acid which are stable in structure and high temperature resistant, so that the application temperature range of the cement retarder is expanded.
Description
Technical Field
The invention relates to a reinforced cement retarder and a preparation method thereof, belonging to the technical field of cement retarders.
Background
The cement retarder is an additive which can delay cement hydration reaction, thereby prolonging the setting time of concrete, keeping the plasticity of fresh concrete for a long time, facilitating the pouring, improving the construction efficiency and simultaneously not causing adverse effect on various performances of the later stage of the concrete. The existing cement retarder is generally narrow in applicable temperature range, sensitive to temperature change and capable of influencing strength development of cement stones, has the problems that the retarder fails in a high-temperature area and the like, is easy to flash set or excessively retard, and can influence cement pouring quality and cement construction to be safely and smoothly carried out.
Disclosure of Invention
In order to solve the problems, the invention provides a reinforced cement retarder and a preparation method thereof, which have good performance stability and still have good coagulation regulating effect when used in different temperature ranges.
The reinforced cement retarder comprises the following raw materials in percentage by weight: 16-28% of sodium lignosulphonate, 3-7% of borax, 20-35% of inorganic phosphate, 10-15% of organic phosphonic acid, 5-8% of tartaric acid and the balance of deionized water, wherein the total amount is 100%.
Further, the inorganic phosphate includes sodium hexametaphosphate, sodium pyrophosphate, sodium triphosphate or sodium tripolyphosphate.
Further, the organic phosphonic acid includes aminotrimethylene phosphonic acid, ethylenediamine tetramethylene phosphonic acid, hydroxyaminomethylene phosphonic acid, hexamethylenediamine tetramethylene phosphonic acid, or diethylenetriamine pentamethylene phosphonic acid.
The preparation method comprises the following raw materials in percentage by weight: 22% of sodium lignosulphonate, 5% of borax, 32% of sodium hexametaphosphate, 12% of aminotrimethylene phosphoric acid, 5% of tartaric acid and the balance of deionized water, wherein the total amount is 100%.
Further, the sodium humate or sulfonated sodium humate is also included, and the weight ratio of the sodium humate/sulfonated sodium humate to the sodium lignosulfonate is 0.3: 1-0.7: 1.
The preparation method comprises the following raw materials in percentage by weight: 10% of sodium humate, 20% of sodium lignosulfonate, 5% of borax, 30% of sodium hexametaphosphate, 12% of aminotrimethylene phosphoric acid, 6% of tartaric acid and the balance of deionized water, wherein the total amount is 100%.
The preparation method comprises the following raw materials in percentage by weight: 8% of sulfonated sodium humate, 20% of sodium lignosulfonate, 5% of borax, 30% of sodium hexametaphosphate, 12% of aminotrimethylene phosphoric acid, 6% of tartaric acid and the balance of deionized water, wherein the total amount is 100%.
The preparation method of the enhanced cement retarder comprises the following steps: firstly, adding deionized water into a reaction kettle with a stirring device; weighing sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphate and tartaric acid according to the formula ratio by using a weighing device; then, sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphate and tartaric acid are sequentially added into the reaction kettle through a feeder and are uniformly stirred.
The preparation method of the enhanced cement retarder comprises the following steps: firstly, adding deionized water into a reaction kettle with a stirring device; weighing sodium humate, sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphoric acid and tartaric acid according to the formula ratio by using a weighing device; and then, sequentially adding sodium humate, sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphate and tartaric acid into the reaction kettle through a feeder, and uniformly stirring.
The preparation method of the enhanced cement retarder comprises the following steps: firstly, adding deionized water into a reaction kettle with a stirring device; then weighing the sulfonated sodium humate, sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphoric acid and tartaric acid according to the formula ratio by using a weighing device; and then, adding the sulfonated sodium humate, sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphate and tartaric acid into the reaction kettle in sequence through a feeder, and uniformly stirring.
Compared with the prior art, the enhanced cement retarder and the preparation method thereof have the advantages that the sodium lignosulfonate with salt-resistant and calcium-resistant sulfonate groups is compounded with the inorganic phosphate and the organic phosphonic acid which have stable structure, high temperature resistance and insensitivity to small changes of cement components, so that the application temperature range of the cement retarder is expanded; the cement retarder still has good coagulation regulating effect when used in a region with a large temperature difference range.
Detailed Description
The reinforced cement retarder comprises the following raw materials in percentage by weight: 16-28% of sodium lignosulphonate, 3-7% of borax, 20-35% of inorganic phosphate, 10-15% of organic phosphonic acid, 5-8% of tartaric acid and the balance of deionized water, wherein the total amount is 100%.
The inorganic phosphate comprises sodium hexametaphosphate, sodium pyrophosphate, sodium triphosphate or sodium tripolyphosphate.
The organic phosphonic acid includes amino trimethylene phosphonic acid, ethylene diamine tetra methylene phosphonic acid, hydroxy diamine methylene phosphonic acid, hexamethylene diamine tetramethylene phosphonic acid or diethylene triamine pentamethylene phosphonic acid.
Example 1:
the reinforced cement retarder comprises the following raw materials in percentage by weight: 22% of sodium lignosulphonate, 5% of borax, 32% of sodium hexametaphosphate, 12% of aminotrimethylene phosphoric acid, 5% of tartaric acid and the balance of deionized water, wherein the total amount is 100%.
The preparation method of the enhanced cement retarder comprises the following steps: firstly, adding deionized water into a reaction kettle with a stirring device; weighing sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphate and tartaric acid according to the formula ratio by using a weighing device; then, sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphate and tartaric acid are sequentially added into the reaction kettle through a feeder and are uniformly stirred.
According to the enhanced cement retarder and the preparation method thereof, sodium lignosulfonate with salt-resistant and calcium-resistant sulfonate groups is used in a compounding manner with inorganic phosphate and organic phosphonic acid which are stable in structure and high temperature resistant, so that the application temperature range (65-118 ℃) of the cement retarder is expanded; the cement retarder still has good coagulation regulating effect when used in a region with a large temperature difference range.
Example 2:
the reinforced cement retarder comprises the following raw materials in percentage by weight: 10% of sodium humate, 20% of sodium lignosulfonate, 5% of borax, 30% of sodium hexametaphosphate, 12% of aminotrimethylene phosphoric acid, 6% of tartaric acid and the balance of deionized water, wherein the total amount is 100%.
The preparation method of the enhanced cement retarder comprises the following steps: firstly, adding deionized water into a reaction kettle with a stirring device; weighing sodium humate, sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphoric acid and tartaric acid according to the formula ratio by using a weighing device; and then, sequentially adding sodium humate, sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphate and tartaric acid into the reaction kettle through a feeder, and uniformly stirring.
According to the enhanced cement retarder and the preparation method thereof, sodium humate contains active groups such as hydroxyl, carboxyl and the like in molecules, and the groups have more negative charges and can provide electrons for an outer-layer track of metal ions; adding sodium humate, dispersing cement particles through a diffusion electric layer at the initial stage of cement hydration through the actions of adsorption, chelation, dispersion, wetting and the like, forming a solvation film on the surfaces of the cement particles and calcium ions, and preferentially adsorbing C3A to inhibit the growth and development of crystal nuclei, so that the hydration speed is delayed; and with Ca2+Slightly soluble precipitate is generated, and Ca in a cement paste system is reduced2+Concentration, thereby realizing retardation; the sodium humate, sodium lignosulfonate, borax, inorganic phosphate, organic phosphonic acid and hydroxycarboxylic acid are compounded for use, so that the retarding effect is enhanced, and the cement retarder has good salt resistance and high temperature resistance, and the adaptive temperature range is 57-132 ℃.
Example 3:
the reinforced cement retarder comprises the following raw materials in percentage by weight: 8% of sulfonated sodium humate, 20% of sodium lignosulfonate, 5% of borax, 30% of sodium hexametaphosphate, 12% of aminotrimethylene phosphoric acid, 6% of tartaric acid and the balance of deionized water, wherein the total amount is 100%.
The preparation method of the strong cement retarder comprises the following steps: firstly, adding deionized water into a reaction kettle with a stirring device; then weighing the sulfonated sodium humate, sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphoric acid and tartaric acid according to the formula ratio by using a weighing device; and then, adding the sulfonated sodium humate, sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphate and tartaric acid into the reaction kettle in sequence through a feeder, and uniformly stirring.
According to the enhanced cement retarder and the preparation method thereof, sulfonic acid groups are introduced into humic acid molecules, so that the water solubility and calcium and salt resistance of humic acid are enhanced to a certain extent, and sulfonated sodium humate obtained through sulfonation reaction can be well compounded with sodium lignosulfonate, so that the prepared cement retarder is more stable in performance and has an adaptive temperature range of 48-141 ℃; the sulfonated sodium humate is obtained by carrying out sulfonation reaction on humic acid, the sulfonation reaction of the humic acid adopts the existing sulfonation method, mainly utilizes the reaction of sodium hypophosphite or sodium sulfite and formaldehyde with coal humic acid at the same time, and introduces sulfonic acid groups into humic acid molecules, and the detailed sulfonation method and the reaction principle thereof are not described in detail herein.
The above-described embodiments are merely preferred embodiments of the present invention, and all equivalent changes or modifications of the structures, features and principles described in the claims of the present invention are included in the scope of the present invention.
Claims (10)
1. The reinforced cement retarder is characterized by comprising the following raw materials in percentage by weight: 16-28% of sodium lignosulphonate, 3-7% of borax, 20-35% of inorganic phosphate, 10-15% of organic phosphonic acid, 5-8% of tartaric acid and the balance of deionized water, wherein the total amount is 100%.
2. The enhanced cement retarder of claim 1, wherein the inorganic phosphate comprises sodium hexametaphosphate, sodium pyrophosphate, sodium tripolyphosphate, or sodium tripolyphosphate.
3. The enhanced cement retarder of claim 1, wherein the organophosphonic acid comprises aminotrimethylene phosphonic acid, ethylenediamine tetramethylene phosphonic acid, hydroxyaldiaminemethylene phosphonic acid, hexamethylenediamine tetramethylene phosphonic acid, or diethylenetriamine pentamethylene phosphonic acid.
4. The enhanced cement retarder according to claim 1, which is characterized by comprising the following raw materials in percentage by weight: 22% of sodium lignosulphonate, 5% of borax, 32% of sodium hexametaphosphate, 12% of aminotrimethylene phosphoric acid, 5% of tartaric acid and the balance of deionized water, wherein the total amount is 100%.
5. The enhanced cement retarder according to claim 1, further comprising sodium humate or sulfonated sodium humate, wherein the weight ratio of sodium humate/sulfonated sodium humate to sodium lignosulfonate is 0.3: 1-0.7: 1.
6. The enhanced cement retarder according to claim 1, which is characterized by comprising the following raw materials in percentage by weight: 10% of sodium humate, 20% of sodium lignosulfonate, 5% of borax, 30% of sodium hexametaphosphate, 12% of aminotrimethylene phosphoric acid, 6% of tartaric acid and the balance of deionized water, wherein the total amount is 100%.
7. The enhanced cement retarder according to claim 1, which is characterized by comprising the following raw materials in percentage by weight: 8% of sulfonated sodium humate, 20% of sodium lignosulfonate, 5% of borax, 30% of sodium hexametaphosphate, 12% of aminotrimethylene phosphoric acid, 6% of tartaric acid and the balance of deionized water, wherein the total amount is 100%.
8. The preparation method of the enhanced cement retarder is characterized by comprising the following steps of: firstly, adding deionized water into a reaction kettle with a stirring device; weighing sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphate and tartaric acid according to the formula ratio by using a weighing device; then, sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphate and tartaric acid are sequentially added into the reaction kettle through a feeder and are uniformly stirred.
9. The preparation method of the enhanced cement retarder is characterized by comprising the following steps of: firstly, adding deionized water into a reaction kettle with a stirring device; weighing sodium humate, sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphoric acid and tartaric acid according to the formula ratio by using a weighing device; and then, sequentially adding sodium humate, sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphate and tartaric acid into the reaction kettle through a feeder, and uniformly stirring.
10. The preparation method of the enhanced cement retarder is characterized by comprising the following steps of: firstly, adding deionized water into a reaction kettle with a stirring device; then weighing the sulfonated sodium humate, sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphoric acid and tartaric acid according to the formula ratio by using a weighing device; and then, adding the sulfonated sodium humate, sodium lignosulphonate, borax, sodium hexametaphosphate, aminotrimethylene phosphate and tartaric acid into the reaction kettle in sequence through a feeder, and uniformly stirring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010207035.8A CN111320410A (en) | 2020-03-23 | 2020-03-23 | Enhanced cement retarder and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010207035.8A CN111320410A (en) | 2020-03-23 | 2020-03-23 | Enhanced cement retarder and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112028523A (en) * | 2020-08-20 | 2020-12-04 | 中海油田服务股份有限公司 | Retarder and preparation method thereof |
| CN112961658A (en) * | 2021-03-09 | 2021-06-15 | 嘉华特种水泥股份有限公司 | Long-sealing-section large-temperature-difference cement slurry system for well cementation |
| CN112980409A (en) * | 2021-03-09 | 2021-06-18 | 嘉华特种水泥股份有限公司 | Retarder suitable for large-temperature-difference well cementation and preparation method thereof |
| CN113321439A (en) * | 2021-06-29 | 2021-08-31 | 五河中联水泥有限公司 | Application method of retarder in cement |
-
2020
- 2020-03-23 CN CN202010207035.8A patent/CN111320410A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112028523A (en) * | 2020-08-20 | 2020-12-04 | 中海油田服务股份有限公司 | Retarder and preparation method thereof |
| CN112961658A (en) * | 2021-03-09 | 2021-06-15 | 嘉华特种水泥股份有限公司 | Long-sealing-section large-temperature-difference cement slurry system for well cementation |
| CN112980409A (en) * | 2021-03-09 | 2021-06-18 | 嘉华特种水泥股份有限公司 | Retarder suitable for large-temperature-difference well cementation and preparation method thereof |
| CN112961658B (en) * | 2021-03-09 | 2022-08-05 | 嘉华特种水泥股份有限公司 | Long-sealing-section large-temperature-difference cement slurry system for well cementation |
| CN113321439A (en) * | 2021-06-29 | 2021-08-31 | 五河中联水泥有限公司 | Application method of retarder in cement |
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Application publication date: 20200623 |