CN1657481A - Water-preserving agent for cement - Google Patents
Water-preserving agent for cement Download PDFInfo
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- CN1657481A CN1657481A CN 200510042047 CN200510042047A CN1657481A CN 1657481 A CN1657481 A CN 1657481A CN 200510042047 CN200510042047 CN 200510042047 CN 200510042047 A CN200510042047 A CN 200510042047A CN 1657481 A CN1657481 A CN 1657481A
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- water
- cement
- preserving agent
- concrete
- agent
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Abstract
A water-preserving agent for cement contains proportionally hydroxyethyl cellulose ether, dispersable latex powder and high-hydroscopicity resin. It is applied through dissolving it in water, laying aside for 10 min, and mixing the solution with cement. Its advantage is high effect to preserve water and increase the strength and durability of concrete.
Description
Technical field
The present invention relates to a kind of water-holding agent, especially water-preserving agent for cement.
Background technology
Cement needs enough water and reacts with it in process of setting, could guarantee cement intensity.The firm ready-made concrete of general requirement need be sprinkled water maintenance more than 7 days.But in many actual engineerings, the maintenance 7 days of often not accomplishing to sprinkle water, and the ratio of the moisture evaporation of cement surface is very fast, as not keeping the moisture in the concrete, will certainly influence cement intensity.The method of traditional concrete water conservation is to add an amount of Mierocrystalline cellulose.Fiber have certain water retention, but effect is bad.Especially to thin layer cement, cellulosic water retention is more undesirable.The curing agent that plays water retention is also arranged in the market, as the organosilicon curing agent, this class curing agent mechanism of action was generally and sprayed one deck curing agent more in the above after concrete formation 4-8 hour, made concrete surface form one deck hydrophobic film, thereby played maintenance action.Curing agent needs construction separately, complex procedures like this.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, provide a kind of can directly mixing in cement, to use the good again water-holding agent of water conservation effect.
For achieving the above object, the present invention takes following technical scheme: it contains the hydroxyethyl ether cellulose of (weight ratio) 65%-75%, the polymer dispersion powder of 10-20%, the High hydrophilous resin of 10-20%.Mix above material thoroughly packing and be finished product.
The hydroxyethyl ether cellulose HS2000000 that hydroxyethyl ether cellulose wherein selects for use German CLARIANT company to produce.
During use, water-holding agent is added in the 200-300 water doubly, fully dissolving was left standstill 10 minutes, mixed and stirred cement with this.
Positively effect of the present invention is: 1, because the hydroxyethyl ether cellulose HS200000 viscosity in aqueous solution that the German CLARIANT company that selects for use produces is very big, the viscosity of 2% solution can reach 200000mPas, and as easy as rolling off a log dispersion, cold water instant dissolving, improved the water conservation effect of water-holding agent greatly, reduce use cost, under the condition of equal performance, used this water-holding agent can save the expense of 10%-15%.2, because the polymer dispersion powder of selecting for use has pore effect in the concrete of obstruction, it is more closely knit that concrete is added behind this water-holding agent, significantly reduce distributing of moisture in the concrete, improved concrete intensity and weather resistance, especially can reduce the crackle of thin layer cement.3, because the super absorbent resin of selecting for use has very strong water retention capacity, it is slow to discharge moisture, can replenish concrete further hydration water, has further improved the water conservation effect of water-holding agent.4, this water-holding agent is a meal, carries convenient transportation, and is easy to use.
Embodiment
With an embodiment the present invention is described specifically below:
A kind of water-preserving agent for cement, the prescription of this water-holding agent are (weight percent):
Hydroxyethyl ether cellulose 70%, polymer dispersion powder 15%, High hydrophilous resin 15%.
Mierocrystalline cellulose wherein selects German CLARIANT hydroxyethyl ether cellulose HS200000.
During use, the water that water-holding agent is added 250 times mixes, and water-holding agent is fully dissolved, and leaves standstill 10 minutes, mixes and stirs cement with this and gets final product.
Claims (2)
1, a kind of water-preserving agent for cement is characterized in that, it contains the hydroxyethyl ether cellulose of weight ratio 65%-75%, the polymer dispersion powder of 10-20%, the High hydrophilous resin of 10-20%.
2, water-preserving agent for cement as claimed in claim 1 is characterized in that the hydroxyethyl ether cellulose HS2000000 that described hydroxyethyl ether cellulose selects for use German CLARIANT company to produce.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510042047 CN1270995C (en) | 2005-01-24 | 2005-01-24 | Water-preserving agent for cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510042047 CN1270995C (en) | 2005-01-24 | 2005-01-24 | Water-preserving agent for cement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1657481A true CN1657481A (en) | 2005-08-24 |
| CN1270995C CN1270995C (en) | 2006-08-23 |
Family
ID=35007206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510042047 Expired - Fee Related CN1270995C (en) | 2005-01-24 | 2005-01-24 | Water-preserving agent for cement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1270995C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102172978A (en) * | 2011-01-25 | 2011-09-07 | 清华大学 | Anti-cracking curing method for concrete |
| CN103304195A (en) * | 2013-07-03 | 2013-09-18 | 内蒙古大学 | Preparation method of prefabricated cement block taking super-absorbent resin as filler |
| CN109437658A (en) * | 2018-12-05 | 2019-03-08 | 湖南圣华节水科技股份有限公司 | A kind of concrete water-retaining agent and preparation method thereof |
| CN116621605A (en) * | 2023-03-23 | 2023-08-22 | 安徽皖维花山新材料有限责任公司 | Powder concrete curing agent and preparation method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584098B (en) * | 2012-01-12 | 2013-08-07 | 林二军 | Cement modifier |
| CN102584097B (en) * | 2012-01-12 | 2013-06-19 | 佛山市南海升伟户外用品有限公司 | Cement modifier |
-
2005
- 2005-01-24 CN CN 200510042047 patent/CN1270995C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102172978A (en) * | 2011-01-25 | 2011-09-07 | 清华大学 | Anti-cracking curing method for concrete |
| CN103304195A (en) * | 2013-07-03 | 2013-09-18 | 内蒙古大学 | Preparation method of prefabricated cement block taking super-absorbent resin as filler |
| CN109437658A (en) * | 2018-12-05 | 2019-03-08 | 湖南圣华节水科技股份有限公司 | A kind of concrete water-retaining agent and preparation method thereof |
| CN116621605A (en) * | 2023-03-23 | 2023-08-22 | 安徽皖维花山新材料有限责任公司 | Powder concrete curing agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1270995C (en) | 2006-08-23 |
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| CF01 | Termination of patent right due to non-payment of annual fee |