CN101805145A - Plastic concrete water evaporation inhibitor and preparation method thereof - Google Patents
Plastic concrete water evaporation inhibitor and preparation method thereof Download PDFInfo
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- CN101805145A CN101805145A CN 201010122850 CN201010122850A CN101805145A CN 101805145 A CN101805145 A CN 101805145A CN 201010122850 CN201010122850 CN 201010122850 CN 201010122850 A CN201010122850 A CN 201010122850A CN 101805145 A CN101805145 A CN 101805145A
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- water evaporation
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Abstract
The invention discloses a plastic concrete water evaporation inhibitor and a preparation method thereof, wherein the plastic concrete water evaporation inhibitor is prepared from the following components in proportion by weight: 0.1 to 10 percent of amphipathic compound, 0.2 to 10 percent of nonionic surfactant, 0.2 to 10 percent of anionic surfactant, 0.1 to 10 percent of thickening agent, 0 to 20 percent of auxiliary emulsifying agent and the balance of water. In the invention, a water emulsion system is prepared by utilizing the amphipathic compound under the actions of anionic and nonionic emulsifying agents, the emulsion system can effectively inhabit the water evaporation of a plastic concrete surface, and the highest inhabiting efficiency can reach 80 percent. The invention has the advantages of simple preparation process, stable performance, convenient field use and the like.
Description
Technical field
The present invention relates to concrete field, particularly relate to a kind of plastic concrete water evaporation inhibitor that contains amphiphilic cpds and preparation method thereof.
Background technology
Concrete pouring is an important step of concrete construction, and traditional concrete pouring mainly comprises from concrete initial set later on: (1) covering curing; (2) watering maintenance; (3) curing agent maintenance.Though these maintenance technologies can stop the evaporation of moisture in the concrete, reduce crack on concrete and improve intensity.Yet in concrete practice of construction process, usually run into the quick-drying situation of concrete surface, plateau concrete for example, or under the envrionment temperature height, situations such as humidity is low, wind speed is high, sunlight direct projection, concrete surface moisture evaporation speed is higher than concrete bleeding speed, causes the bigger negative pressure of generation in the concrete kapillary and volume of concrete is sharply shunk.And the concrete of this moment is in the plastic stage, and intensity can't be resisted the contraction of itself, causes concrete surface to ftracture, crust, be clamminess, and strong wind one blows, and serious " playing ash " phenomenon also occurs; Even more serious is that concrete surface is dry rapidly, wipes one's face and also can't finish, and has a strong impact on construction progress and later stage property development.
Therefore, how from constructing in early days, reduce the moisture evaporation of concrete surface after finishing from concrete depositing immediately, keep concrete plastic state, reduce concrete plastic cracking, improving concrete weather resistance is the problem that must solve in the construction.Yet the domestic at present nearly all concrete pouring technology and the research of maintenance product all are to carry out at the surface after the concrete initial set, and relate to the surface maintenance technology and product in length of time morning that concrete is in plastic state, also are in space state.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can reduce the inhibitor that concrete is in the surface-moisture evaporation in length of time morning of plastic state.
The present invention is formulated by weight by following component:
Amphiphilic cpds 0.1%-10%, nonionogenic tenside 0.2%-10%, anion surfactant 0.2%-10%, thickening material 0.1-10%, assistant for emulsifying agent 0%-20%, surplus is a water.
Above-mentioned amphiphilic cpds can be that following carbon chain lengths is C
12-C
20Fatty Alcohol(C12-C14 and C12-C18) in the mixture of one or more arbitrary proportions: lauryl alcohol, tridecanol, tetradecyl alcohol, pentadecanol, hexadecanol, heptadecyl alcohol, stearyl alcohol, nonadecanol, eicosanol; Also can be that following carbon chain lengths is C
12-C
20Lipid acid in the mixture of one or more arbitrary proportions: laurostearic acid, tridecylic acid, TETRADECONIC ACID, pentadecanoic acid, palmitic acid, margaric acid, stearic acid, nonadecanoic acid, 20 acid.Amphiphilic cpds preferred content in the present invention is 1%-5%.
Above-mentioned nonionogenic tenside is selected from the mixture of one or both arbitrary proportions in fatty alcohol-polyoxyethylene ether, polyxyethylated alkylphenol, sorbitan-fatty acid ester or the polyoxyethylene sorbitan fatty acid ester, and its preferred content is 1%-5%.
Above-mentioned anion surfactant is selected from the mixture of one or more arbitrary proportions in the sulfonate of the long chain alkyl sulfates of basic metal, amine or alkaline-earth metal or basic metal, amine or alkaline-earth metal, and its preferred content is 1%-5%.
Above-mentioned thickening material is selected from the mixture of one or more arbitrary proportions in polyoxyethylene glycol, polyvinyl alcohol, polyacrylamide, polyacrylic acid or the Natvosol, and its preferred content is for being 0.4-2%.
Above-mentioned assistant for emulsifying agent is selected from the mixture of one or more arbitrary proportions in methyl alcohol, ethanol, propyl carbinol or the ethylene glycol, and its preferred content is 5%-10%.
Preparation method of the present invention is: mixing back mechanical stirring is even down at 30-90 ℃ with each component, adds entry then and stirs 30 minutes, cools off standby.
It is 50-80 ℃ that each component of the present invention is mixed the preferred temperature that stirs.
The present invention is a kind of water miscible liquid system that contains amphiphilic cpds, need 10 times of dilute with waters in use, utilize spraying plant then, emulsion is evenly sprayed on the plastic concrete surface, can reduce the concrete surface moisture evaporation that is in the plastic stage significantly.
Embodiment
Embodiment 1
With amphiphilic cpds: 0.1g stearyl alcohol (weight percent 0.1%), nonionogenic tenside: 0.15g polyoxyethylene laurel ether (weight percent 0.15%), anion surfactant: 0.5g sodium oleate (weight percent 0.5%), thickening material: 0.1g polyacrylamide (weight percent 0.1%), add water to 100g, under 60 ℃ of conditions, evenly stirred 30 minutes discharging.10 times of prepared emulsion dilutions are sprayed at the plastic concrete surface, can reduce by 32% moisture evaporation.
Embodiment 2
With amphiphilic cpds: 5g stearyl alcohol (weight percent 5%) and 0.6g tetradecyl alcohol (weight percent 0.6%), nonionogenic tenside: 10g polyxyethylated alkylphenol (weight percent 10%), anion surfactant: 4g sodium oleate (weight percent 4%), thickening material: 3g polyacrylamide (weight percent 3%), add water to 100g, under 50 ℃ of conditions, evenly stirred 30 minutes discharging.10 times of prepared emulsion dilutions are sprayed at the plastic concrete surface, can reduce by 62% moisture evaporation.
Embodiment 3
With amphiphilic cpds: 10g palmitic acid (weight percent 10%), nonionogenic tenside: 4g polyxyethylated alkylphenol (weight percent 4%), anion surfactant: 2g sodium laurylsulfonate (weight percent 2%), thickening material: 9g polyoxyethylene glycol (weight percent 9%), add water to 100g, under 90 ℃ of conditions, evenly stirred 30 minutes discharging.10 times of prepared emulsion dilutions are sprayed at the plastic concrete surface, can reduce by 50% moisture evaporation.
Embodiment 4
With amphiphilic cpds: 5g hexadecanol (weight percent 5%) and 0.6g lauryl alcohol (weight percent 0.6%), nonionogenic tenside: 10g polyxyethylated alkylphenol (weight percent 10%), anion surfactant: 4g sodium laurylsulfonate (weight percent 4%), thickening material: 3g polyvinyl alcohol (weight percent 3%), add water to 100g, under 60 ℃ of conditions, evenly stirred 30 minutes discharging.10 times of prepared emulsion dilutions are sprayed at the plastic concrete surface, can reduce by 70% moisture evaporation.
Embodiment 5
With amphiphilic cpds: 7g eicosanol (weight percent 7%) and 0.8g pentadecanol (weight percent 0.8%), nonionogenic tenside: 10g sorbitan-fatty acid ester (weight percent 10%), anion surfactant: 4g sodium laurylsulfonate (weight percent 4%), thickening material: 5g polyvinyl alcohol (weight percent 5%), add water to 100g, under 80 ℃ of conditions, evenly stirred 30 minutes discharging.10 times of prepared emulsion dilutions are sprayed at the plastic concrete surface, can reduce by 75% moisture evaporation.
Embodiment 6
With amphiphilic cpds: 3g palmitic acid (weight percent 3%) and 0.8g laurostearic acid (weight percent 0.8%), nonionogenic tenside: 5g sorbitan-fatty acid ester (weight percent 5%), anion surfactant: 2g sodium lauryl sulphate (weight percent 2%), thickening material: 10g Natvosol (weight percent 10%), add water to 100g, under 60 ℃ of conditions, evenly stirred 30 minutes discharging.10 times of prepared emulsion dilutions are sprayed at the plastic concrete surface, can reduce by 71% moisture evaporation.
Embodiment 7
With amphiphilic cpds: 0.2g stearic acid (weight percent 0.2%), nonionogenic tenside: 0.2g polyxyethylated alkylphenol (weight percent 0.2%), anion surfactant: 0.2g sodium lauryl sulphate (weight percent 0.2%), thickening material: 1g Natvosol (weight percent 1%), add water to 100g, under 30 ℃ of conditions, evenly stirred 30 minutes discharging.10 times of prepared emulsion dilutions are sprayed at the plastic concrete surface, can reduce by 41% moisture evaporation.
Embodiment 8
With amphiphilic cpds: 8g hexadecanol (weight percent 8%), nonionogenic tenside: 2g sorbitan-fatty acid ester (weight percent 2%), anion surfactant: 10g sodium lauryl sulphate (weight percent 10%), thickening material: 5g Natvosol (weight percent 5%), assistant for emulsifying agent: 10g ethanol (weight percent 10%) adds water to 100g, under 70 ℃ of conditions, evenly stirred 30 minutes discharging.10 times of prepared emulsion dilutions are sprayed at the plastic concrete surface, can reduce by 66% moisture evaporation.
Embodiment 9
With amphiphilic cpds: 4g hexadecanol (weight percent 4%) and 1g stearyl alcohol (weight percent 1%), nonionogenic tenside: 2g polyoxyethylene laurel ether (weight percent 2%), anion surfactant: 5g potassium oleate (weight percent 5%), thickening material: 3g Natvosol (weight percent 3%), assistant for emulsifying agent: 20g ethanol (weight percent 20%) adds water to 100g, under 70 ℃ of conditions, evenly stirred 30 minutes discharging.10 times of prepared emulsion dilutions are sprayed at the plastic concrete surface, can reduce by 30% moisture evaporation.
Embodiment 10
With amphiphilic cpds: 2g hexadecanol (weight percent 2%) and 2g stearyl alcohol (weight percent 2%), nonionogenic tenside: 2g polyoxyethylene laurel ether (weight percent 2%), anion surfactant: 1g sodium laurylsulfonate (weight percent 1%), thickening material: 3g polyvinyl alcohol (weight percent 3%), assistant for emulsifying agent: 5g propyl carbinol (weight percent 5%) adds water to 100g, under 80 ℃ of conditions, evenly stirred 30 minutes discharging.10 times of prepared emulsion dilutions are sprayed at the plastic concrete surface, can reduce by 80% moisture evaporation.
The testing method of moisture evaporation inhibiting rate is as follows in the foregoing description:
Starting material:
Cement: " Jin Ningyang " 425R.P.II type cement
Sand: fineness modulus is 2.6 medium sand
Stone: the Nanjing six directions is produced basalt, and crush index is 2.5%, and particle diameter is the rubble of 5-20mm
Concrete mix:
| Cement | Sand | Big stone | Handstone | Water |
| ??3.45kg | ??6.8kg | ??10.08kg | ??6.72kg | ??8.6kg |
Under identical experiment condition, the emulsion inhibitor after the dilution is sprayed to concrete surface, adopt weighting method relatively to spray inhibitor and the water evaporation quantity that does not spray the concrete surface of inhibitor, calculate the efficient that reduces moisture evaporation, calculation formula is as follows:
Wherein: W
m=W
M1-W
M2W
n=W
N1-W
N2
W
M1, W
M2Be respectively the concrete initial weight that do not spray the emulsion inhibitor and the weight behind the moisture evaporation; W
N1And W
N2Be respectively the concrete initial weight of spray emulsion inhibitor and the weight behind the moisture evaporation.
Claims (13)
1. plastic concrete water evaporation inhibitor is characterized in that by following component by weight formulated:
Amphiphilic cpds 0.1%-10%, nonionogenic tenside 0.2%-10%, anion surfactant 0.2%-10%, thickening material 0.1-10%, assistant for emulsifying agent 0%-20%, surplus is a water.
2. plastic concrete water evaporation inhibitor according to claim 1 is characterized in that described amphiphilic cpds is that following carbon chain lengths is C
12-C
20Fatty Alcohol(C12-C14 and C12-C18) in the mixture of one or more arbitrary proportions: lauryl alcohol, tridecanol, tetradecyl alcohol, pentadecanol, hexadecanol, heptadecyl alcohol, stearyl alcohol, nonadecanol, eicosanol; Or be that following carbon chain lengths is C
12-C
20Lipid acid in the mixture of one or more arbitrary proportions: laurostearic acid, tridecylic acid, TETRADECONIC ACID, pentadecanoic acid, palmitic acid, margaric acid, stearic acid, nonadecanoic acid, 20 acid.
3. plastic concrete water evaporation inhibitor as claimed in claim 1 or 2, the weight content that it is characterized in that described amphiphilic cpds is 1%-5%.
4. plastic concrete water evaporation inhibitor according to claim 1 is characterized in that described nonionogenic tenside is selected from the mixture of one or both arbitrary proportions in fatty alcohol-polyoxyethylene ether, polyxyethylated alkylphenol, sorbitan-fatty acid ester or the polyoxyethylene sorbitan fatty acid ester.
5. as plastic concrete water evaporation inhibitor as described in claim 1 or 4, the content that it is characterized in that nonionogenic tenside is 1%-5%.
6. plastic concrete water evaporation inhibitor according to claim 1 is characterized in that described anion surfactant is selected from the long chain alkyl sulfates of basic metal, amine or alkaline-earth metal or the mixture of one or more arbitrary proportions in the sulfonate.
7. as plastic concrete water evaporation inhibitor as described in claim 1 or 6, the content that it is characterized in that anion surfactant is 1%-5%.
8. plastic concrete water evaporation inhibitor according to claim 1 is characterized in that described thickening material is selected from the mixture of one or more arbitrary proportions in polyoxyethylene glycol, polyvinyl alcohol, polyacrylamide, polyacrylic acid or the Natvosol.
9. as plastic concrete water evaporation inhibitor as described in the claim 8, it is characterized in that described amount of thickener is for being 0.4-2%.
10. plastic concrete water evaporation inhibitor according to claim 1 is characterized in that described assistant for emulsifying agent is selected from the mixture of one or more arbitrary proportions in methyl alcohol, ethanol, propyl carbinol or the ethylene glycol.
11., it is characterized in that described assistant for emulsifying agent content is 5%-10% as plastic concrete water evaporation inhibitor as described in the claim 10.
12. the preparation method of any described plastic concrete water evaporation inhibitor of claim 1 to 11 is characterized in that mixing back mechanical stirring is even down at 30-90 ℃ with each component, adds entry then and stirs 30 minutes, cools off standby.
13. as preparation method as described in the claim 12, it is characterized in that, described each component stirred after mixing down at 50-80 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010101228500A CN101805145B (en) | 2010-03-12 | 2010-03-12 | Plastic concrete water evaporation inhibitor and preparation method thereof |
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|---|---|---|---|
| CN2010101228500A CN101805145B (en) | 2010-03-12 | 2010-03-12 | Plastic concrete water evaporation inhibitor and preparation method thereof |
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| CN101805145B CN101805145B (en) | 2012-11-21 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116091A (en) * | 2011-01-07 | 2011-07-06 | 江苏博特新材料有限公司 | Early fog curing method of cement-based materials |
| CN102286267A (en) * | 2011-05-23 | 2011-12-21 | 天津科技大学 | Microemulsion used for inhibiting generation and transportation of liquid chemical toxic gas and preparation method thereof |
| CN102503541A (en) * | 2011-09-23 | 2012-06-20 | 江苏博特新材料有限公司 | Concrete water evaporation inhibitor with shrinkage function and preparation method thereof |
| CN105503019A (en) * | 2015-12-29 | 2016-04-20 | 江苏苏博特新材料股份有限公司 | Preparation method of concrete water evaporation inhibitor |
| WO2019210598A1 (en) * | 2018-05-03 | 2019-11-07 | 黄河勘测规划设计研究院有限公司 | Migration inhibitor for internal and external moisture of concrete |
| CN110700679A (en) * | 2019-08-27 | 2020-01-17 | 中国铁塔股份有限公司盐城市分公司 | Secondary pouring method for tower foot of communication iron tower |
| CN110963819A (en) * | 2018-09-29 | 2020-04-07 | 镇江苏博特新材料有限公司 | Preparation method of concrete water evaporation inhibitor with core-shell structure |
| CN111825390A (en) * | 2020-06-18 | 2020-10-27 | 东莞市冠峰混凝土有限公司 | Self-curing concrete |
| CN113306014A (en) * | 2021-06-28 | 2021-08-27 | 广州市羊城地下工程有限公司 | Cement civil air defense door circulating water automatic maintenance device and manufacturing method of cement civil air defense door |
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| CN1281834A (en) * | 1999-07-22 | 2001-01-31 | 中国石油化工集团公司 | Emulsion type concrete curing agent |
| CN1749199A (en) * | 2005-07-26 | 2006-03-22 | 李全堂 | Concrete curing agent |
| CN1800074A (en) * | 2006-01-09 | 2006-07-12 | 江苏博特新材料有限公司 | Moisture steaming blocking agent for plastic concrete |
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2010
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1281834A (en) * | 1999-07-22 | 2001-01-31 | 中国石油化工集团公司 | Emulsion type concrete curing agent |
| CN1749199A (en) * | 2005-07-26 | 2006-03-22 | 李全堂 | Concrete curing agent |
| CN1800074A (en) * | 2006-01-09 | 2006-07-12 | 江苏博特新材料有限公司 | Moisture steaming blocking agent for plastic concrete |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116091A (en) * | 2011-01-07 | 2011-07-06 | 江苏博特新材料有限公司 | Early fog curing method of cement-based materials |
| CN102286267A (en) * | 2011-05-23 | 2011-12-21 | 天津科技大学 | Microemulsion used for inhibiting generation and transportation of liquid chemical toxic gas and preparation method thereof |
| CN102286267B (en) * | 2011-05-23 | 2013-11-20 | 天津科技大学 | Microemulsion used for inhibiting generation and transportation of liquid chemical toxic gas and preparation method thereof |
| CN102503541A (en) * | 2011-09-23 | 2012-06-20 | 江苏博特新材料有限公司 | Concrete water evaporation inhibitor with shrinkage function and preparation method thereof |
| CN105503019A (en) * | 2015-12-29 | 2016-04-20 | 江苏苏博特新材料股份有限公司 | Preparation method of concrete water evaporation inhibitor |
| WO2019210598A1 (en) * | 2018-05-03 | 2019-11-07 | 黄河勘测规划设计研究院有限公司 | Migration inhibitor for internal and external moisture of concrete |
| CN110963819A (en) * | 2018-09-29 | 2020-04-07 | 镇江苏博特新材料有限公司 | Preparation method of concrete water evaporation inhibitor with core-shell structure |
| CN110963819B (en) * | 2018-09-29 | 2021-12-17 | 镇江苏博特新材料有限公司 | Preparation method of concrete water evaporation inhibitor with core-shell structure |
| CN110700679A (en) * | 2019-08-27 | 2020-01-17 | 中国铁塔股份有限公司盐城市分公司 | Secondary pouring method for tower foot of communication iron tower |
| CN110700679B (en) * | 2019-08-27 | 2021-06-01 | 中国铁塔股份有限公司盐城市分公司 | Secondary pouring method for tower foot of communication iron tower |
| CN111825390A (en) * | 2020-06-18 | 2020-10-27 | 东莞市冠峰混凝土有限公司 | Self-curing concrete |
| CN113306014A (en) * | 2021-06-28 | 2021-08-27 | 广州市羊城地下工程有限公司 | Cement civil air defense door circulating water automatic maintenance device and manufacturing method of cement civil air defense door |
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| CN101805145B (en) | 2012-11-21 |
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