CN106746894B - A kind of retarder and its application method suitable for sulphate aluminium cement - Google Patents
A kind of retarder and its application method suitable for sulphate aluminium cement Download PDFInfo
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- CN106746894B CN106746894B CN201710057774.1A CN201710057774A CN106746894B CN 106746894 B CN106746894 B CN 106746894B CN 201710057774 A CN201710057774 A CN 201710057774A CN 106746894 B CN106746894 B CN 106746894B
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- retarder
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- cement
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- starch
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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
-
- 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
-
- 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
-
- 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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
Abstract
It is as made from the raw material of following parts by weight the invention discloses a kind of retarder suitable for sulphate aluminium cement: 30-70 parts of polymer emulsion, 10-25 parts of chlormethylisothiazo,ine ketone, 2-10 parts of film forming agent, 1-15 parts of water-reducing agent and 5-15 parts of polyethylene glycol.The invention also discloses the application methods of the retarder.Retarder of the invention can effectively delay the rate of set of sulphate aluminium cement, and initial set and final setting time can extend 30min or more；It is remarkably improved the fluidity of cement slurry, paste flowing degree improves 15% or more.Retarder of the invention is to the development of strength of cement without any adverse effect, and cheap, performance is stablized, easily stored transport.
Description
Technical field
The present invention relates to a kind of retarder and its application method suitable for sulphate aluminium cement, belong to cement additive neck
Domain.
Background technique
Sulphate aluminium cement has very wide application field, the characteristics of due to the cement clinker mineral itself, sulphur aluminic acid
Salt cement hydration rate is fast, and when aquation can release a large amount of heat, when local temperature is excessively high in cement-based material, construction operation
Bring very big difficult and disturbance factor.
Cement retarder be it is a kind of can delay concrete coagulating time and its later period performance is had no significant effect it is additional
Agent.It is mostly used for sulphate aluminium cement, in engineering and boric acid is added to adjust its rate of set.Boric acid to cement granules with
And hyrate cenotype has stronger active function, and fine and close line borate wrapping layer can be generated, be adsorbed in cement particle surface,
The fine and close wrapping layer of formation can prevent contact of the cement granules with water, to delay the further aquation of cement.But cement
Particle true form very irregular, solubility and the solution rate difference on different curvature radius surface, causes the table of different parts
The thickness for the line borate wrap film that face is formed is different, and the thin local hydrone of wrap film is readily permeable to inside wrap film, makes film
The interior rapid aquation of clinker mineral, hydrated product AFm and AFt can make solid phase generate volume expansion when being formed, make to generate crystallization in film
Pressure causes line borate wrap film to rupture, unstable so as to cause the deferred action of borax.Therefore borax deferred action effect is non-
Normal is unstable, is easy to cause engineering accident.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of slow settings low in cost, suitable for sulphate aluminium cement
Agent.
The present invention also provides the application methods of the retarder for being suitable for sulphate aluminium cement.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of retarder suitable for sulphate aluminium cement is as made from the raw material of following parts by weight: polymer emulsion
30-70 parts, 10-25 parts of chlormethylisothiazo,ine ketone, 2-10 parts of film forming agent, 1-15 parts of water-reducing agent and 5-15 parts of polyethylene glycol.
Described, polymer emulsion is organosilicon-modified acrylic emulsion, solid content 47-49%.
Described, film forming agent is nonionic polyurethane lotion, solid content 54%.
Described, water-reducing agent is powder sodium lignin sulfonate, and lignin sulfonic acid sodium content > 45% tails over≤4%.
Described, polyethylene glycol is one of Liquid Macrogol, Macrogol 600 and cetomacrogol 1000.
A kind of application method of the retarder suitable for sulphate aluminium cement, comprising the following steps:
1) sodium metasilicate is added in water, is uniformly mixed, adjust pH 8-10, heating keeps the temperature at 30-40 DEG C, obtains alkali
Solution；
2) polymer emulsion, chlormethylisothiazo,ine ketone, film forming agent, water-reducing agent and polyethylene glycol are weighed by weight, are mixed
It is even, obtain retarder；
3) retarder is added in aqueous slkali, stirs 15-30min, obtains first product；
4) first product is uniformly mixed with mixing water, adds defoaming agent and starch, mix, then with cement mix.
Described, the mass ratio of sodium metasilicate and water is 2-4:100.
Described, the mass ratio of retarder and aqueous slkali is 1:1-3.
The additional amount of the first product is the 5-6% of cement quality；The additional amount of the defoaming agent and starch is respectively first product
The 0.5-1% and 1-5% of quality；The dosage of the mixing water is the 45% of cement quality.
The defoaming agent is the fatty acid ester compounded object of higher alcohols or aliphatic amide, solid content 42%；The starch is green
One of beans starch, tapioca and sweet potato starch.
Beneficial effects of the present invention:
1. retarder of the invention utilizes high molecular polymer film forming mechanism, pass through chlormethylisothiazo,ine ketone and poly- second two
Alcohol is evenly dispersed in aqueous solution by each substance, and polymer emulsion and film forming agent uniform adsorption prevent water in cement particle surface
Mud is directly contacted with water, delays hydrated cementitious speed, reduces film-forming temperature.Film forming agent film forming can form water with adsorbed water molecule
Film, this layer of moisture film have good lubricating action, and the fluidity of sulphate aluminium cement slurry obviously increases, and improves its workability.
2. retarder of the invention can effectively delay the rate of set of sulphate aluminium cement, initial set and final setting time
Extend 30min or more；It is remarkably improved the fluidity of cement slurry, paste flowing degree improves 15% or more.
3. retarder of the invention is to the development of strength of cement without any adverse effect, cheap, performance is stablized, and is easy to
Storage transport.
Specific embodiment
Combined with specific embodiments below, the present invention is described in further details.
Raw material used in the present invention be it is commercially available, conventional purchase can be obtained.
Embodiment 1
A kind of retarder suitable for sulphate aluminium cement is as made from the raw material of following parts by weight: polymer emulsion
70 parts, 10 parts of chlormethylisothiazo,ine ketone, 2 parts of film forming agent, 1 part of water-reducing agent and 15 parts of polyethylene glycol.
Described, polymer emulsion is organosilicon-modified acrylic emulsion, solid content 47-49%.
Described, film forming agent is nonionic polyurethane lotion, solid content 54%.
Described, water-reducing agent is powder sodium lignin sulfonate, and lignin sulfonic acid sodium content > 45% tails over≤4%.
Described, polyethylene glycol is Liquid Macrogol.
A kind of application method of the retarder suitable for sulphate aluminium cement, comprising the following steps:
1) sodium metasilicate is added in water, is uniformly mixed, adjust pH 8, heating keeps the temperature at 40 DEG C, obtains aqueous slkali；
2) polymer emulsion, chlormethylisothiazo,ine ketone, film forming agent, water-reducing agent and polyethylene glycol are weighed by weight, are mixed
It is even, obtain retarder；
3) retarder is added in aqueous slkali, stirs 15min, obtains first product；
4) first product is uniformly mixed with mixing water, adds defoaming agent and starch, mix, then with cement mix.
Described, the mass ratio of sodium metasilicate and water is 4:100.
Described, the mass ratio of retarder and aqueous slkali is 1:1.
The additional amount of the first product is the 5% of cement quality；The additional amount of the defoaming agent and starch is respectively first quality
The 0.5% and 5% of amount；The dosage of the mixing water is the 45% of cement quality.
The defoaming agent is the fatty acid ester compounded object of higher alcohols, solid content 42%；The starch is sweet potato starch.
Embodiment 2
A kind of retarder suitable for sulphate aluminium cement is as made from the raw material of following parts by weight: polymer emulsion
50 parts, 15 parts of chlormethylisothiazo,ine ketone, 6 parts of film forming agent, 8 parts of water-reducing agent and 10 parts of polyethylene glycol.
Described, polyethylene glycol is Macrogol 600.
A kind of application method of the retarder suitable for sulphate aluminium cement, comprising the following steps:
1) sodium metasilicate is added in water, is uniformly mixed, adjust pH 9, heating keeps the temperature at 35 DEG C, obtains aqueous slkali；
2) polymer emulsion, chlormethylisothiazo,ine ketone, film forming agent, water-reducing agent and polyethylene glycol are weighed by weight, are mixed
It is even, obtain retarder；
3) retarder is added in aqueous slkali, stirs 25min, obtains first product；
4) first product is uniformly mixed with mixing water, adds defoaming agent and starch, mix, then with cement mix.
Described, the mass ratio of sodium metasilicate and water is 3:100.
Described, the mass ratio of retarder and aqueous slkali is 1:2.
The additional amount of the first product is the 6% of cement quality；The additional amount of the defoaming agent and starch is respectively first quality
The 0.8% and 3% of amount；The dosage of the mixing water is the 45% of cement quality.
The defoaming agent is aliphatic amide；The starch is tapioca.
Remaining is the same as embodiment 1.
Embodiment 3
A kind of retarder suitable for sulphate aluminium cement is as made from the raw material of following parts by weight: polymer emulsion
30 parts, 25 parts of chlormethylisothiazo,ine ketone, 10 parts of film forming agent, 15 parts of water-reducing agent and 5 parts of polyethylene glycol.
Described, polyethylene glycol is cetomacrogol 1000.
A kind of application method of the retarder suitable for sulphate aluminium cement, comprising the following steps:
1) sodium metasilicate is added in water, is uniformly mixed, adjust pH 10, heating keeps the temperature at 30 DEG C, obtains aqueous slkali；
2) polymer emulsion, chlormethylisothiazo,ine ketone, film forming agent, water-reducing agent and polyethylene glycol are weighed by weight, are mixed
It is even, obtain retarder；
3) retarder is added in aqueous slkali, stirs 30min, obtains first product；
4) first product is uniformly mixed with mixing water, adds defoaming agent and starch, mix, then with cement mix.
Described, the mass ratio of sodium metasilicate and water is 2:100.
Described, the mass ratio of retarder and aqueous slkali is 1:3.
The additional amount of the first product is the 5% of cement quality；The additional amount of the defoaming agent and starch is respectively first quality
The 1% and 1% of amount；The dosage of the mixing water is the 45% of cement quality.
The defoaming agent is the fatty acid ester compounded object of higher alcohols；The starch is green starch.
Remaining is the same as embodiment 1.
Comparative example 1
A kind of retarder suitable for sulphate aluminium cement is as made from the raw material of following parts by weight: polymer emulsion
50 parts, 6 parts of film forming agent, 8 parts of water-reducing agent.
A kind of application method of the retarder suitable for sulphate aluminium cement, comprising the following steps:
1) sodium metasilicate is added in water, is uniformly mixed, adjust pH 9, heating keeps the temperature at 35 DEG C, obtains aqueous slkali；
2) polymer emulsion, film forming agent and water-reducing agent are weighed by weight, are mixed, are obtained retarder；
3) retarder is added in aqueous slkali, stirs 25min, obtains first product；
4) first product is uniformly mixed with mixing water, adds defoaming agent and starch, mix, then with cement mix.
Described, the mass ratio of sodium metasilicate and water is 3:100.
Described, the mass ratio of retarder and aqueous slkali is 1:2.
The additional amount of the first product is the 6% of cement quality；The additional amount of the defoaming agent and starch is respectively first quality
The 0.8% and 3% of amount；The dosage of the mixing water is the 45% of cement quality.
The defoaming agent is aliphatic amide；The starch is tapioca.
Remaining is the same as embodiment 1.
Comparative example 2
A kind of retarder suitable for sulphate aluminium cement is as made from the raw material of following parts by weight: the different thiophene of chloromethyl
15 parts of oxazoline ketone, 8 parts of water-reducing agent and 10 parts of polyethylene glycol.
Described, polyethylene glycol is Macrogol 600.
A kind of application method of the retarder suitable for sulphate aluminium cement, comprising the following steps:
1) sodium metasilicate is added in water, is uniformly mixed, adjust pH 9, heating keeps the temperature at 35 DEG C, obtains aqueous slkali；
2) chlormethylisothiazo,ine ketone, water-reducing agent and polyethylene glycol are weighed by weight, are mixed, are obtained retarder；
3) retarder is added in aqueous slkali, stirs 25min, obtains first product；
4) first product is uniformly mixed with mixing water, adds defoaming agent and starch, mix, then with cement mix.
Described, the mass ratio of sodium metasilicate and water is 3:100.
Described, the mass ratio of retarder and aqueous slkali is 1:2.
The additional amount of the first product is the 6% of cement quality；The additional amount of the defoaming agent and starch is respectively first quality
The 0.8% and 3% of amount；The dosage of the mixing water is the 45% of cement quality.
The defoaming agent is aliphatic amide；The starch is tapioca.
Remaining is the same as embodiment 1.
Comparative example 3
A kind of retarder suitable for sulphate aluminium cement is as made from the raw material of following parts by weight: polymer emulsion
50 parts, 15 parts of chlormethylisothiazo,ine ketone, 6 parts of film forming agent, 8 parts of water-reducing agent and 10 parts of polyethylene glycol.
Described, polyethylene glycol is Macrogol 600.
A kind of application method of the retarder suitable for sulphate aluminium cement, comprising the following steps:
1) polymer emulsion, chlormethylisothiazo,ine ketone, film forming agent, water-reducing agent and polyethylene glycol are weighed by weight, are mixed
It is even, obtain retarder；
2) retarder is uniformly mixed with mixing water, adds defoaming agent and starch, mix, then with cement mix.
The additional amount of the retarder is the 6% of cement quality；The additional amount of the defoaming agent and starch is respectively slow setting
The 0.8% of agent quality and 3%；The dosage of the mixing water is the 45% of cement quality.
The defoaming agent is aliphatic amide；The starch is tapioca.
Remaining is the same as embodiment 1.
Performance test
Respectively using the sulphate aluminium cement for adding the obtained retarder of embodiment 1-3 as experimental group 1-3, compared respectively with adding
The sulphate aluminium cement that retarder is made in example 1-3 is control group 1-3, using do not add the sulphate aluminium cement of any retarder as
Control group 4.Referring to GB/T8077-2000 " concrete admixture homogeneity test method ", under the conditions of 0.45 ratio of mud, measurement is real
Test the paste flowing degree of group 1-3 and control group 1-4；Referring to GB/T1346-2011 " cement normal consistency water consumption, setting time,
The stability method of inspection ", under the conditions of 0.27 ratio of mud, using Vicat apparatus measurement experiment group 1-3 and control group 1-4 condensation when
Between；Under the conditions of 0.27 ratio of mud, 2 × 2 × 2cm of press machine measurement experiment group 1-3 and control group 1-4 is used3Net slurry test block
28 days net slurry compression strength.Testing result is as shown in table 1.
1 the performance test results of table
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details.
Claims (5)
1. a kind of retarder suitable for sulphate aluminium cement, which is characterized in that be as made from the raw material of following parts by weight: poly-
Close 30-70 parts of object lotion, 10-25 parts of chlormethylisothiazo,ine ketone, 2-10 parts of film forming agent, 1-15 parts of water-reducing agent and polyethylene glycol 5-
15 parts；
The application method of the retarder suitable for sulphate aluminium cement, comprising the following steps:
1) sodium metasilicate is added in water, is uniformly mixed, adjust pH 8-10, heating keeps the temperature at 30-40 DEG C, obtains aqueous slkali；
The mass ratio of the sodium metasilicate and water is 2-4:100；
2) polymer emulsion, chlormethylisothiazo,ine ketone, film forming agent, water-reducing agent and polyethylene glycol are weighed by weight, are mixed, are obtained
Retarder；
3) retarder is added in aqueous slkali, stirs 15-30min, obtains first product；
The mass ratio of the retarder and aqueous slkali is 1:1-3；
4) first product is uniformly mixed with mixing water, adds defoaming agent and starch, mix, then with cement mix；
The additional amount of the first product is the 5-6% of cement quality；The additional amount of the defoaming agent and starch is respectively first quality
0.5-1% and 1-5%；The dosage of the mixing water is the 45% of cement quality；
The defoaming agent is the fatty acid ester compounded object of higher alcohols or aliphatic amide, solid content 42%；The starch is mung bean shallow lake
One of powder, tapioca and sweet potato starch.
2. retarder according to claim 1, which is characterized in that the polymer emulsion is organosilicon-modified acrylic cream
Liquid, solid content 47-49%.
3. retarder according to claim 1, which is characterized in that the film forming agent is nonionic polyurethane lotion, Gu
Content is 54%.
4. retarder according to claim 1, which is characterized in that the water-reducing agent is powder sodium lignin sulfonate, wooden
Plain sulfonic acid sodium content > 45%, tails over≤4%.
5. retarder according to claim 1, which is characterized in that the polyethylene glycol is Liquid Macrogol, polyethylene glycol
One of 600 and cetomacrogol 1000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710057774.1A CN106746894B (en) | 2017-01-23 | 2017-01-23 | A kind of retarder and its application method suitable for sulphate aluminium cement |
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| CN201710057774.1A CN106746894B (en) | 2017-01-23 | 2017-01-23 | A kind of retarder and its application method suitable for sulphate aluminium cement |
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| CN106746894A CN106746894A (en) | 2017-05-31 |
| CN106746894B true CN106746894B (en) | 2018-12-25 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108585591B (en) * | 2018-05-18 | 2019-03-19 | 袁建强 | A kind of cement concrete retarder |
| CN112851185B (en) * | 2021-02-01 | 2022-02-11 | 重庆大学 | Retarder for adjusting initial setting time of sulphoaluminate cement and preparation method and use method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1053445A (en) * | 1996-08-06 | 1998-02-24 | Daicel Huels Ltd | Cement hardening retarder and cement hardening retarding sheet |
| CN1669972A (en) * | 2005-02-23 | 2005-09-21 | 刘茂平 | Compound retarder for quick hardening sulphoaluminate cement |
| CN105000819B (en) * | 2015-08-06 | 2017-03-29 | 济南大学 | A kind of retarder suitable for sulphate aluminium cement |
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