CN103641369A - Concrete admixture - Google Patents
Concrete admixture Download PDFInfo
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- CN103641369A CN103641369A CN201310604635.8A CN201310604635A CN103641369A CN 103641369 A CN103641369 A CN 103641369A CN 201310604635 A CN201310604635 A CN 201310604635A CN 103641369 A CN103641369 A CN 103641369A
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- reducer
- concrete
- water
- polycarboxylate water
- admixture
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Abstract
A disclosed Concrete admixture is composed of the following substances by mass: a polycarboxylate superplasticizer, sodium sulfate, sodium gluconate and water with a ratio of 15-30:0.5-2:3-10:55-79. The admixture provided by the invention is applicable to concrete possessing sand with a mud content more than 6%, and the concrete is prolonged in breakdown time, improved in 28-day compressive strength and substantially improved in performances, and thus the engineering quality is guaranteed.
Description
Technical field
The present invention relates to concrete technology field.
Background technology
Polycarboxylate water-reducer (Polycarboxylate Superplasticizer) is a kind of high-performance water reducing agent, it is a kind of cement dispersants during cement concrete uses, chemically can be divided into two classes, take main chain as methacrylic acid, side chain is hydroxy-acid group and MPEG (Methoxy polyethylene glycol), polyester type structure.Another for main chain be polyacrylic acid, side chain is Vinyl alcohol polyethylene glycol, polyether-type structure.Mix after polycarboxylate water-reducer, concrete has high slump retention, and within half hour, the slump is not lost substantially, can greatly improve concrete mobility, makes the concrete energy long period keep workability; Can improve concrete physical and mechanical property, improve construction quality simultaneously.
But while using silt content to surpass 6% sand in the mixed station of business, then be easy to occur that the coagulation earth fall damages too fastly while selecting polycarboxylate water-reducer, the phenomenons such as insufficient strength, have a strong impact on construction quality.Therefore be badly in need of solving the problem of polycarboxylate water-reducer of using in the higher sand of silt content.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of concrete admixture, admixture of the present invention can be applied to sand silt content and surpass in 6% concrete, concrete collapse-proof time lengthening, within 28 days, ultimate compression strength has improved, and has greatly improved concrete performance and has ensured construction quality.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of concrete admixture, raw material is comprised of following material in mass ratio: the ratio of polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 15～30:0.5～2:3～10:55～79.
The ratio of preferred polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 17～28:0.2～1.8:4～9:60～77
The ratio of preferred polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 18～25:0.3～1.5:4.5～8:65～76
The ratio of preferred polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 19～22:0.4～1.2:4.5～7:70～75
The ratio of preferred polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 20:1:5:74.
Polycarboxylate water-reducer is polyether-type polycarboxylate water-reducer.
Polyether-type polycarboxylate water-reducer can increase concrete mobility, workability and suppress concrete loss of slump.
Sodium sulfate anhydrous.min(99) (sodium sulfate) can preferentially be adsorbed by mud in the larger concrete of silt content, thereby has protected polycarboxylate water-reducer not to be adsorbed, and the effect of polycarboxylate water-reducer is brought into play lastingly.
Sunmorl N 60S can further keep concrete slump as a kind of auxiliary slow setting component.
The beneficial effect that adopts technique scheme to produce is: admixture of the present invention can be applied to sand silt content and surpass in 6% concrete, the concrete collapse-proof time can reach 1 hour, within 28 days, ultimate compression strength can improve more than 20%, has greatly improved concrete performance and has ensured construction quality.
Embodiment
Embodiment 1
A concrete admixture, raw material is comprised of following material in mass ratio: the ratio of polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 20:1:5:74.
The admixture of the present invention that can add gelling material quality 2% during use, gelling material refers to the summation of cement, flyash and breeze, it is as follows that the C30 concrete mix that uses the mixed blending station of business to provide carries out testing data:
Each material mass proportioning of table 1
Table 2 results of property
While directly adding polycarboxylate water-reducer, polycarboxylate water-reducer is identical with the add-on of admixture of the present invention.
The situation that is obviously better than not adding polycarboxylate water-reducer or just adds polycarboxylate water-reducer over performance after using admixture of the present invention in 6% concrete in sand silt content.
Embodiment 2
A concrete admixture, raw material is comprised of following material in mass ratio: the ratio of polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 21:0.8:5.5:74.
It is as follows that the C30 concrete mix that uses the mixed blending station of business to provide carries out testing data:
Each material mass proportioning of table 3
Table 4 results of property
The situation that is obviously better than not adding polycarboxylate water-reducer or just adds polycarboxylate water-reducer over performance after using admixture of the present invention in 6% concrete in sand silt content.
Embodiment 3
A concrete admixture, raw material is comprised of following material in mass ratio: the ratio of polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 18:1.2:4.5:79.
It is as follows that the C30 concrete mix that uses the mixed blending station of business to provide carries out testing data:
Each material mass proportioning of table 5
Table 6 results of property
The situation that is obviously better than not adding polycarboxylate water-reducer or just adds polycarboxylate water-reducer over performance after using admixture of the present invention in 6% concrete in sand silt content.
Embodiment 4
A concrete admixture, raw material is comprised of following material in mass ratio: the ratio of polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 17:0.6:7:55.
It is as follows that the C30 concrete mix that uses the mixed blending station of business to provide carries out testing data:
Each material mass proportioning of table 7
Table 8 results of property
The situation that is obviously better than not adding polycarboxylate water-reducer or just adds polycarboxylate water-reducer over performance after using admixture of the present invention in 6% concrete in sand silt content.
Embodiment 5
A concrete admixture, raw material is comprised of following material in mass ratio: the ratio of polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 25:1.5:4:65.
It is as follows that the C30 concrete mix that uses the mixed blending station of business to provide carries out testing data:
Each material mass proportioning of table 9
Table 10 results of property
The situation that is obviously better than not adding polycarboxylate water-reducer or just adds polycarboxylate water-reducer over performance after using admixture of the present invention in 6% concrete in sand silt content.
Embodiment 6
A concrete admixture, raw material is comprised of following material in mass ratio: the ratio of polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 28:1.8:3:75.
It is as follows that the C30 concrete mix that uses the mixed blending station of business to provide carries out testing data:
Each material mass proportioning of table 11
Table 12 results of property
The situation that is obviously better than not adding polycarboxylate water-reducer or just adds polycarboxylate water-reducer over performance after using admixture of the present invention in 6% concrete in sand silt content.
Embodiment 7
A concrete admixture, raw material is comprised of following material in mass ratio: the ratio of polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 30:2:9:77.
It is as follows that the C30 concrete mix that uses the mixed blending station of business to provide carries out testing data:
Each material mass proportioning of table 13
Table 14 results of property
The situation that is obviously better than not adding polycarboxylate water-reducer or just adds polycarboxylate water-reducer over performance after using admixture of the present invention in 6% concrete in sand silt content.
Embodiment 8
A concrete admixture, raw material is comprised of following material in mass ratio: the ratio of polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 15:0.9:8:76.
It is as follows that the C30 concrete mix that uses the mixed blending station of business to provide carries out testing data:
Each material mass proportioning of table 15
Table 16 results of property
The situation that is obviously better than not adding polycarboxylate water-reducer or just adds polycarboxylate water-reducer over performance after using admixture of the present invention in 6% concrete in sand silt content.
Embodiment 9
A concrete admixture, raw material is comprised of following material in mass ratio: the ratio of polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 23:01.3:6:78.
It is as follows that the C30 concrete mix that uses the mixed blending station of business to provide carries out testing data:
Each material mass proportioning of table 17
Table 18 results of property
The situation that is obviously better than not adding polycarboxylate water-reducer or just adds polycarboxylate water-reducer over performance after using admixture of the present invention in 6% concrete in sand silt content.
Admixture of the present invention also can be applied in other concrete.
Claims (6)
1. a concrete admixture, is characterized in that: raw material is comprised of following material in mass ratio: the ratio of polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 15～30:0.5～2:3～10:55～79.
2. concrete admixture as claimed in claim 1, is characterized in that: the ratio of polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 17～28:0.2～1.8:4～9:60～77.
3. concrete admixture as claimed in claim 2, is characterized in that: the ratio of polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 18～25:0.3～1.5:4.5～8:65～76.
4. concrete admixture as claimed in claim 3, is characterized in that: the ratio of polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 19～22:0.4～1.2:4.5～7:70～75.
5. concrete admixture as claimed in claim 4, is characterized in that: the ratio of polycarboxylate water-reducer, sodium sulfate, Sunmorl N 60S and water is 20:1:5:74.
6. the concrete admixture as described in any one in claim 1 to 5, is characterized in that: described polycarboxylate water-reducer is polyether-type polycarboxylate water-reducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310604635.8A CN103641369A (en) | 2013-11-26 | 2013-11-26 | Concrete admixture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310604635.8A CN103641369A (en) | 2013-11-26 | 2013-11-26 | Concrete admixture |
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| CN103641369A true CN103641369A (en) | 2014-03-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609802A (en) * | 2015-01-24 | 2015-05-13 | 芜湖鑫曜建材实业有限公司 | High-crack-resistant concrete |
| CN108059411A (en) * | 2018-01-22 | 2018-05-22 | 成都建工预筑科技有限公司 | A kind of steel fiber reinforced concrete containing regenerative micro powder |
| CN112645633A (en) * | 2020-12-26 | 2021-04-13 | 西盟司（上海）建筑工程材料有限公司 | Antifreezing concrete water reducing agent and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515615A (en) * | 2011-12-29 | 2012-06-27 | 上海三瑞高分子材料有限公司 | Anti-freezing concrete water reducer |
-
2013
- 2013-11-26 CN CN201310604635.8A patent/CN103641369A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515615A (en) * | 2011-12-29 | 2012-06-27 | 上海三瑞高分子材料有限公司 | Anti-freezing concrete water reducer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609802A (en) * | 2015-01-24 | 2015-05-13 | 芜湖鑫曜建材实业有限公司 | High-crack-resistant concrete |
| CN108059411A (en) * | 2018-01-22 | 2018-05-22 | 成都建工预筑科技有限公司 | A kind of steel fiber reinforced concrete containing regenerative micro powder |
| CN108059411B (en) * | 2018-01-22 | 2021-01-29 | 成都建工预筑科技有限公司 | Steel fiber concrete containing regenerated micro powder |
| CN112645633A (en) * | 2020-12-26 | 2021-04-13 | 西盟司（上海）建筑工程材料有限公司 | Antifreezing concrete water reducing agent and preparation method thereof |
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Application publication date: 20140319 |
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