CN105384389A - Sisal residue composite concrete water reducer and preparation method thereof - Google Patents
Sisal residue composite concrete water reducer and preparation method thereof Download PDFInfo
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- CN105384389A CN105384389A CN201510887479.XA CN201510887479A CN105384389A CN 105384389 A CN105384389 A CN 105384389A CN 201510887479 A CN201510887479 A CN 201510887479A CN 105384389 A CN105384389 A CN 105384389A
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Abstract
The invention discloses a sisal residue composite concrete water reducer. The sisal residue composite concrete water reducer is prepared from the following raw materials by weight: 5 to 10 parts of sisal residue, 2 to 4 parts of polyvinyl alcohol, 6 to 8 parts of sodium hydroxide, 5 to 10 parts of hydrogen peroxide with a concentration of 20 to 30%, 0.1 to 0.2 part of polysorbate-80, 40 to 50 parts of modified polycarboxylate mother liquor, 2 to 4 parts of citric acid, 1 to 2 parts of triethanolamine, 0.1 to 0.2 part of dimethicone, 1 to 2 parts of calcium carbonate and 40 to 50 parts of water. The water reducer has good compatibility with cement, is small in doping amount and high in a water reducing rate, can improve the bonding strength of cement, strengthen the compression resistance and fracture resistance of concrete and enhance the durability of concrete, exerts anticorrosion effect, is green and environment-friendly, and produces high social benefits and environmental benefits.
Description
Technical field
The present invention relates to chemical assistant technical field, particularly relate to a kind of sisal dregs composite concrete water reducer and preparation method thereof.
Background technology
Cement water reducing agent is one of staple product of building materials industry, in concrete mix, add Water-reducing Admixtures To Cements particle have dissemination, the mobility of concrete mix can be improved, reduce unit cement consumption, save cement, ensure concrete workability and intensity simultaneously.Water reducer conventional at present mainly contains lignin sulfonate, naphthalene water reducer class and poly carboxylic acid series water reducer class.Poly carboxylic acid series water reducer has the advantages such as water-reducing rate is high, reinforced effects is remarkable, concrete workability better, environmental protection, is the water reducer of most application prospect in recent years.But in actual concrete works uses, there is the problem with cement consistency in poly carboxylic acid series water reducer, its result of use affects larger by cement moiety.Time particularly containing compositions such as clays, due to the Inter layer adsorption effect of clay, serious on the diminishing dispersing property impact of polycarboxylate water-reducer, concrete serviceability is reduced, constrains widespread use and the development of poly carboxylic acid series water reducer.And current domestic poly carboxylic acid series water reducer product development is not yet ripe, of less types, is difficult to content with funtion, the diversified market requirement, need further exploitation and perfect.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of sisal dregs composite concrete water reducer and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of sisal dregs composite concrete water reducer, it is obtained by the raw material of following weight parts:
Sisal dregs 5-10, polyvinyl alcohol 2-4, sodium hydroxide 6-8,20%-30% hydrogen peroxide 5-10, Tween-80 0.1-0.2, modified polycarboxylic acid mother liquor 40-50, citric acid 2-4, trolamine 1-2, dimethyl silicone oil 0.1-0.2, nano-calcium carbonate 1-2, water 40-50;
Wherein modified polycarboxylic acid mother liquor is made up of the raw material of following weight part: vinylformic acid 30-40, methyl methacrylate 10-15, poly glycol monomethyl ether 10-15, feather protein 3-5, carboxymethyl cellulose 3-5, Potassium Persulphate 0.5-1, water 100-150; The preparation method of modified polycarboxylic acid mother liquor be carboxymethyl cellulose, feather protein and Potassium Persulphate are added 1/2-2/3 amount water in 60-80 DEG C stir 0.5-1h obtain A liquid, all the other raw materials are mixed to obtain B liquid, then A liquid and B liquid are added 70-80 DEG C of stirring reaction 4-6h in reactor jointly, after cooling, pH is adjusted to 8-9, obtains final product.
A preparation method for sisal dregs composite concrete water reducer, comprises the following steps:
(1) raw material is taken by weight, first sodium hydroxide, trolamine and sisal dregs are added to the water jointly 60-80 DEG C and stir 12-24h, Tween-80 and polyvinyl alcohol 80-90 DEG C of stirring 1-2h is added after pH being adjusted to 6-7, then temperature is adjusted to 50-60 DEG C, add 20%-30% hydrogen peroxide and citric acid stirring 4-6h, after cooling, pH is adjusted to 7-8, obtains mixed solution;
(2) after being mixed with modified polycarboxylic acid mother liquor by the mixed solution in (1), 70-80 DEG C is stirred 0.5-1h, adds all the other raw material stirring evenly, obtain sisal dregs composite concrete water reducer after cooling.
Advantage of the present invention is:
Containing effective constituents such as pectin, Mierocrystalline cellulose and saponin in sisal dregs, there is good dispersion, emulsification and gelatinization results, and raw material sources are extensive, cheap.The present invention is by the introducing of feather protein and carboxymethyl cellulose pluronic polymer, make the modified polycarboxylic acid mother liquor of synthesis good to cement adaptability, effectively can reduce the Inter layer adsorption of clay, there is good diminishing dispersing property, composite simultaneously by raw materials such as sisal dregs, the Water-reducing Admixtures To Cements obtained is made to have good consistency, volume is little, water-reducing rate is high, the cohesive strength of cement can be improved, the resistance to compression of Concrete Structure, fracture resistance, improve concrete weather resistance, and etch-proof effect can be played, environmental protection, there is higher social benefit and environmental benefit.
Embodiment
A kind of sisal dregs composite concrete water reducer, it is obtained by the raw material of following weight parts:
Sisal dregs 5, polyvinyl alcohol 2, sodium hydroxide 6,20% hydrogen peroxide 5, Tween-80 0.1, modified polycarboxylic acid mother liquor 40, citric acid 2, trolamine 1, dimethyl silicone oil 0.1, nano-calcium carbonate 1, water 40;
Wherein modified polycarboxylic acid mother liquor is made up of the raw material of following weight part: vinylformic acid 30, methyl methacrylate 10, poly glycol monomethyl ether 10, feather protein 3, carboxymethyl cellulose 3, Potassium Persulphate 0.5, water 100; Carboxymethyl cellulose, feather protein and Potassium Persulphate are added 60 DEG C of stirring 0.5h in the water of 1/2 amount to obtain A liquid by the preparation method of modified polycarboxylic acid mother liquor, all the other raw materials are mixed to obtain B liquid, then A liquid and B liquid are added 70 DEG C of stirring reaction 4h in reactor jointly, after cooling, pH is adjusted to 8, obtains final product.
A preparation method for sisal dregs composite concrete water reducer, comprises the following steps:
(1) raw material is taken by weight, first sodium hydroxide, trolamine and sisal dregs are added to the water jointly 60 DEG C and stir 12h, Tween-80 and polyvinyl alcohol 80 DEG C stirring 1h is added after pH is adjusted to 6, then temperature is adjusted to 50 DEG C, add 20% hydrogen peroxide and citric acid stirring 4h, after cooling, pH is adjusted to 7, obtains mixed solution;
(2) mixed solution in (1) is mixed latter 70 DEG C with modified polycarboxylic acid mother liquor and stir 0.5h, add all the other raw material stirring after cooling evenly, obtain sisal dregs composite concrete water reducer.
Adopt reference cement, as shown in the table to the concrete experiments result of above-mentioned obtained water reducer:
Table one: concrete mixture characteristic (the solid volume 0.5% of water reducer)
| Index | Air content | Compressive strength rate (28d) | Shrinkage ratio (28d) |
| Test result | 3.6% | 178% | 104% |
Carry out paste flowing degree test with above-mentioned obtained water reducer to the cement that difference forms, result is as follows:
Table two: the dispersiveness of water reducer in difference composition cement
| Cement type | Water reducer volume (%) | Initial flow degree (mm) | 1h degree of mobilization (mm) |
| Plain cement | 0.5 | 249 | 241 |
| Silt content 5% cement | 0.5 | 235 | 230 |
Claims (2)
1. a sisal dregs composite concrete water reducer, is characterized in that, it is obtained by the raw material of following weight parts:
Sisal dregs 5-10, polyvinyl alcohol 2-4, sodium hydroxide 6-8,20%-30% hydrogen peroxide 5-10, Tween-80 0.1-0.2, modified polycarboxylic acid mother liquor 40-50, citric acid 2-4, trolamine 1-2, dimethyl silicone oil 0.1-0.2, nano-calcium carbonate 1-2, water 40-50;
Described modified polycarboxylic acid mother liquor is made up of the raw material of following weight part: vinylformic acid 30-40, methyl methacrylate 10-15, poly glycol monomethyl ether 10-15, feather protein 3-5, carboxymethyl cellulose 3-5, Potassium Persulphate 0.5-1, water 100-150; The preparation method of modified polycarboxylic acid mother liquor be carboxymethyl cellulose, feather protein and Potassium Persulphate are added 1/2-2/3 amount water in 60-80 DEG C stir 0.5-1h obtain A liquid, all the other raw materials are mixed to obtain B liquid, then A liquid and B liquid are added 70-80 DEG C of stirring reaction 4-6h in reactor jointly, after cooling, pH is adjusted to 8-9, obtains final product.
2. the preparation method of a kind of sisal dregs composite concrete water reducer according to claim 1, is characterized in that, comprise the following steps:
(1) raw material is taken by weight, first sodium hydroxide, trolamine and sisal dregs are added to the water jointly 60-80 DEG C and stir 12-24h, Tween-80 and polyvinyl alcohol 80-90 DEG C of stirring 1-2h is added after pH being adjusted to 6-7, then temperature is adjusted to 50-60 DEG C, add 20%-30% hydrogen peroxide and citric acid stirring 4-6h, after cooling, pH is adjusted to 7-8, obtains mixed solution;
(2) after being mixed with modified polycarboxylic acid mother liquor by the mixed solution in (1), 70-80 DEG C is stirred 0.5-1h, adds all the other raw material stirring evenly, obtain sisal dregs composite concrete water reducer after cooling.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510887479.XA CN105384389A (en) | 2015-12-07 | 2015-12-07 | Sisal residue composite concrete water reducer and preparation method thereof |
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| CN201510887479.XA CN105384389A (en) | 2015-12-07 | 2015-12-07 | Sisal residue composite concrete water reducer and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109928659A (en) * | 2019-04-04 | 2019-06-25 | 南京瑞固聚合物有限公司 | The water-reducing agent and preparation method thereof of high water reduction type |
Citations (4)
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| CN101767952A (en) * | 2009-12-29 | 2010-07-07 | 天津市飞龙砼外加剂有限公司 | Polycarboxylic acid water reducing agent and preparation method thereof |
| CN103183794A (en) * | 2011-12-27 | 2013-07-03 | 山西黄腾化工有限公司 | Method for preparing polycarboxylic acid type water reducer by solid acid esterification |
| CN103664052A (en) * | 2013-11-29 | 2014-03-26 | 上海三瑞高分子材料有限公司 | Polycarboxylate superplasticizer for machine-made sand concrete |
| CN105036590A (en) * | 2015-07-20 | 2015-11-11 | 苏州市兴邦化学建材有限公司 | Modified polycarboxylate powder superplasticizer dedicated to flowable mortar |
-
2015
- 2015-12-07 CN CN201510887479.XA patent/CN105384389A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767952A (en) * | 2009-12-29 | 2010-07-07 | 天津市飞龙砼外加剂有限公司 | Polycarboxylic acid water reducing agent and preparation method thereof |
| CN103183794A (en) * | 2011-12-27 | 2013-07-03 | 山西黄腾化工有限公司 | Method for preparing polycarboxylic acid type water reducer by solid acid esterification |
| CN103664052A (en) * | 2013-11-29 | 2014-03-26 | 上海三瑞高分子材料有限公司 | Polycarboxylate superplasticizer for machine-made sand concrete |
| CN105036590A (en) * | 2015-07-20 | 2015-11-11 | 苏州市兴邦化学建材有限公司 | Modified polycarboxylate powder superplasticizer dedicated to flowable mortar |
Non-Patent Citations (1)
| Title |
|---|
| 何廷树等: "《混凝土外加剂》", 31 August 2003, 陕西科学技术出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109928659A (en) * | 2019-04-04 | 2019-06-25 | 南京瑞固聚合物有限公司 | The water-reducing agent and preparation method thereof of high water reduction type |
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