CN105985500A - Water reducer capable of improving adhesiveness of concrete - Google Patents
Water reducer capable of improving adhesiveness of concrete Download PDFInfo
- Publication number
- CN105985500A CN105985500A CN201610025632.2A CN201610025632A CN105985500A CN 105985500 A CN105985500 A CN 105985500A CN 201610025632 A CN201610025632 A CN 201610025632A CN 105985500 A CN105985500 A CN 105985500A
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- water reducer
- concrete
- water
- deionized water
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/32—Polyethers, e.g. alkylphenol polyglycolether
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F289/00—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds not provided for in groups C08F251/00 - C08F287/00
-
- 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
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a water reducer capable of improving adhesiveness of concrete. The water reducer is prepared from, by weight, 240-250 parts of TPEG, 25.2-26.0 parts of acrylic acid, 1.6-1.65 parts of ammonium persulfate, 0.53-0.55 part of thioglycolic acid, 13-14 parts of lignin, proper amounts of sodium hydroxide solution of 10wt% in concentration and deionized water, 26-28 parts of grapheme oxide, 3-4 parts of polyethylene glycol, 4-5 parts of carbon black, 4-5 parts of metakaolin, 6-8 parts of superfine slag powder, 3-4 parts of polyvinyl alcohol, 2-3 parts of molasses and 3.5-4 parts of calcium lignosulfonate. Metakaolin after being calcined is added to prepare the water reducer, has certain adhesiveness and can improve viscosity and strength of the concrete after being used in the water reducer, so that consumption of cement is reduced; a proper amount of the superfine slag powder is added, so that working performance of the concrete is improved remarkably.
Description
Technical field
The present invention relates to technical field of concrete additives, particularly relate to a kind of water reducer that can improve concrete adhesivity.
Background technology
Polycarboxylate high performance water-reducing agent, as the important composition material of preparation high performance concrete, the guarantor outstanding advantages such as plasticity good, shrinkage factor low, high performance potentiality big high by its water-reducing rate, is widely used in the key projects such as high ferro, bridge, nuclear power, water power.But, polycarboxylate high performance water-reducing agent mother solution performance is the most single, it is impossible to meet different engineering field, the concrete of different performance requirement, greatly constrains extensively application and the development of polycarboxylate high performance water-reducing agent.Experts and scholars have carried out relatively systematic research by chemically and physically modified method to polycarboxylate high performance water-reducing agent both at home and abroad, achieve gratifying achievement.But these researchs are concentrated mainly on the performance improving polycarboxylate high performance water-reducing agent in a certain respect, such as spacetabs type, Xu are put type and utilize inexpensive monomers synthesis fall low-cost type, and the aspect such as multicomponent physics is compound, bring inconvenience so to compounding unit and construction enterprises, in use easily cause quality accident.
" experimental study of organic amine modified polycarboxylic acid series high-performance dehydragent " literary composition is for the problems referred to above the achievement in research that combines domestic and international expert, the polycarboxylate high performance water-reducing agent using organic amine to produce different manufacturers has carried out physics, chemical modification, the adaptability of cement is greatly improved by modified polycarboxylate high performance water-reducing agent, and the engineering that a kind of mother solution can be suitable for different requirement uses, it is achieved that the high performance of polycarboxylate high performance water-reducing agent mother solution, multifunction.But easily occur that bleeding, isolation, intensity are low, easily the problems such as crack occur when producing concrete, have impact on the use of water reducer, article does not illustrate for these shortcomings, need to be modified further.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of water reducer that can improve concrete adhesivity.
The present invention is achieved by the following technical solutions:
A kind of water reducer that can improve concrete adhesivity, is made up of the raw material of following weight portion: isopentenol polyoxyethylene ether 240-250, acrylic acid 25.2-26.0, Ammonium persulfate. 1.6-1.65, TGA 0.53-0.55, lignin 13-14, concentration are that the sodium hydroxide solution of 10wt% is appropriate, deionized water appropriate, graphene oxide 26-28, Polyethylene Glycol 3-4, white carbon black 4-5, metakaolin 4-5, slag micropowder 6-8, polyvinyl alcohol 3-4, molasses 2-3, wood calcium 3.5-4.
Described a kind of water reducer that can improve concrete adhesivity, is made up of step in detail below:
(1) graphene oxide will add the deionized water of 4-5 times amount, put in ultrasonator ultrasonic 30-40 minute until being uniformly dispersed, then graphene oxide dispersion being put in the water-bath of 60-80 DEG C and heat, be slowly added to lignin, it is stand-by that dispersed with stirring forms mixture the most afterwards；
(2) reactor will add isopentenol polyoxyethylene ether, appropriate amount of deionized water, warming while stirring disposably adds Ammonium persulfate. after 60-70 DEG C, then be slowly added dropwise acrylic acid, mixture that TGA, step (1) obtain, control dripped complete in 3-3.5 hour, continue insulation reaction 60-90 minute, finally dripping the sodium hydroxide solution that concentration is 10wt% to be neutralized, regulation pH value is neutral, and solid content controls at 40%-45%；
(3) metakaolin is put in calcining furnace, with the temperature calcination 2 hours of 700-750 DEG C, be then cooled to room temperature, then mix with slag micropowder, white carbon black, put into ball milling in ball mill and take out after 60-90 minute, obtain mixed-powder stand-by；Being dissolved in by polyvinyl alcohol in the deionized water of 8-10 times amount, add above-mentioned mixed-powder, continuously add remaining residual components after stirring 20-30 minute with the speed of 300-400 rev/min, improve rotating speed to 600-800 rev/min, dispersed with stirring is uniform；
(4) step (2) product is mixed with step (3) product, put in stirred tank, stir mixing with the speed of 600-800 rev/min and be uniformly dispersed and get final product.
The invention have the advantage that the present invention is by controlling the proportioning of isopentenol polyoxyethylene ether and acrylic monomers, thus prepare the water reducer with good dispersion, by polyreaction, lignin, graphene oxide are grafted in polyether-type water reducer molecule, the bleeding of water reducer can be reduced, improve graphene oxide dispersion in cement mortar simultaneously, microstructure to cement mortar has preferable regulating and controlling effect, concrete is played the effect of activeness and quietness, it is possible to improve the paste flowing degree of cement further.
The present invention by metakaolin by adding in the preparation of water reducer after calcining, there is certain adhesivity, as water reducer can improve viscosity and the intensity of concrete, thus reduce the consumption of cement, join the interpolation of proper amount of slag micropowder, significantly improve the service behaviour of concrete；The water reducer that the present invention makes can improve the volume stability of concrete, moreover it is possible to significantly improves adhesivity and the early strength of concrete.
Detailed description of the invention
A kind of water reducer that can improve concrete adhesivity, is made up of the raw material of following weight portion (kilogram): isopentenol polyoxyethylene ether 240, acrylic acid 25.2, Ammonium persulfate. 1.6, TGA 0.53, lignin 13, concentration are that the sodium hydroxide solution of 10wt% is appropriate, deionized water appropriate, graphene oxide 26, Polyethylene Glycol 3, white carbon black 4, metakaolin 4, slag micropowder 6, polyvinyl alcohol 3, molasses 2, wood calcium 3.5.
Described a kind of water reducer that can improve concrete adhesivity, is made up of step in detail below:
(1) graphene oxide will add the deionized water of 4 times amount, put in ultrasonator ultrasonic 30 minutes until being uniformly dispersed, then graphene oxide dispersion being put in the water-bath of 60 DEG C and heat, be slowly added to lignin, it is stand-by that dispersed with stirring forms mixture the most afterwards；
(2) reactor will add isopentenol polyoxyethylene ether, appropriate amount of deionized water, warming while stirring disposably adds Ammonium persulfate. after 60 DEG C, then be slowly added dropwise acrylic acid, mixture that TGA, step (1) obtain, control dripped complete in 3 hours, continue insulation reaction 60 minutes, finally dripping the sodium hydroxide solution that concentration is 10wt% to be neutralized, regulation pH value is neutral, and solid content controls 40%%；
(3) metakaolin is put in calcining furnace, with the temperature calcination 2 hours of 700 DEG C, be then cooled to room temperature, then mix with slag micropowder, white carbon black, put into ball milling in ball mill and take out after 60 minutes, obtain mixed-powder stand-by；Being dissolved in by polyvinyl alcohol in the deionized water of 8 times amount, add above-mentioned mixed-powder, continuously add remaining residual components after stirring 20 minutes with the speed of 300 revs/min, improve rotating speed to 600 revs/min, dispersed with stirring is uniform；
(4) step (2) product is mixed with step (3) product, put in stirred tank, stir mixing with the speed of 600 revs/min and be uniformly dispersed and get final product.
The water reducer excellent product performance that the present invention prepares, water-reducing rate up to 28.3%, bleeding rate 29.3%, volume of the present invention is cement consumption 1%, in the case of the identical ratio of mud compared with using ordinary water-reducing agent, the slump can be made to improve more than 15cm, comprcssive strength improves more than 18%.
Claims (2)
1. the water reducer that can improve concrete adhesivity, it is characterized in that, be made up of the raw material of following weight portion: isopentenol polyoxyethylene ether 240-250, acrylic acid 25.2-26.0, Ammonium persulfate. 1.6-1.65, TGA 0.53-0.55, lignin 13-14, concentration are that the sodium hydroxide solution of 10wt% is appropriate, deionized water appropriate, graphene oxide 26-28, Polyethylene Glycol 3-4, white carbon black 4-5, metakaolin 4-5, slag micropowder 6-8, polyvinyl alcohol 3-4, molasses 2-3, wood calcium 3.5-4.
A kind of water reducer that can improve concrete adhesivity, it is characterised in that be made up of step in detail below:
(1) graphene oxide will add the deionized water of 4-5 times amount, put in ultrasonator ultrasonic 30-40 minute until being uniformly dispersed, then graphene oxide dispersion being put in the water-bath of 60-80 DEG C and heat, be slowly added to lignin, it is stand-by that dispersed with stirring forms mixture the most afterwards；
(2) reactor will add isopentenol polyoxyethylene ether, appropriate amount of deionized water, warming while stirring disposably adds Ammonium persulfate. after 60-70 DEG C, then be slowly added dropwise acrylic acid, mixture that TGA, step (1) obtain, control dripped complete in 3-3.5 hour, continue insulation reaction 60-90 minute, finally dripping the sodium hydroxide solution that concentration is 10wt% to be neutralized, regulation pH value is neutral, and solid content controls at 40%-45%；
(3) metakaolin is put in calcining furnace, with the temperature calcination 2 hours of 700-750 DEG C, be then cooled to room temperature, then mix with slag micropowder, white carbon black, put into ball milling in ball mill and take out after 60-90 minute, obtain mixed-powder stand-by；Being dissolved in by polyvinyl alcohol in the deionized water of 8-10 times amount, add above-mentioned mixed-powder, continuously add remaining residual components after stirring 20-30 minute with the speed of 300-400 rev/min, improve rotating speed to 600-800 rev/min, dispersed with stirring is uniform；
(4) step (2) product is mixed with step (3) product, put in stirred tank, stir mixing with the speed of 600-800 rev/min and be uniformly dispersed and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610025632.2A CN105985500A (en) | 2016-01-15 | 2016-01-15 | Water reducer capable of improving adhesiveness of concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610025632.2A CN105985500A (en) | 2016-01-15 | 2016-01-15 | Water reducer capable of improving adhesiveness of concrete |
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| CN105985500A true CN105985500A (en) | 2016-10-05 |
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| CN201610025632.2A Pending CN105985500A (en) | 2016-01-15 | 2016-01-15 | Water reducer capable of improving adhesiveness of concrete |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106496438A (en) * | 2016-10-09 | 2017-03-15 | 武汉海剑环保材料有限公司 | A kind of amidatioon graphene oxide modified polycarboxylic acid water reducer and preparation method thereof |
| CN115073678A (en) * | 2021-10-08 | 2022-09-20 | 长沙理工大学 | High-adaptability ether polycarboxylic acid and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104788629A (en) * | 2014-12-17 | 2015-07-22 | 厦门路桥翔通建材科技有限公司 | Polycarboxylate water-reducing agent and normal-temperature preparation method thereof |
-
2016
- 2016-01-15 CN CN201610025632.2A patent/CN105985500A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104788629A (en) * | 2014-12-17 | 2015-07-22 | 厦门路桥翔通建材科技有限公司 | Polycarboxylate water-reducing agent and normal-temperature preparation method thereof |
Non-Patent Citations (3)
| Title |
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| 蔡忠河等: "《高性能路面混凝土研究与应用》", 30 June 2009, 中国石油大学出版社 * |
| 钱晓倩主编: "《建筑材料》", 31 December 2013, 浙江大学出版社 * |
| 高党国等: "氧化石墨烯与聚羧酸减水剂单体共聚物的制备与性能", 《精细化工》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106496438A (en) * | 2016-10-09 | 2017-03-15 | 武汉海剑环保材料有限公司 | A kind of amidatioon graphene oxide modified polycarboxylic acid water reducer and preparation method thereof |
| CN106496438B (en) * | 2016-10-09 | 2018-09-28 | 武汉海剑环保材料有限公司 | A kind of amidation graphene oxide modified polycarboxylic acid water-reducing agent and preparation method thereof |
| CN115073678A (en) * | 2021-10-08 | 2022-09-20 | 长沙理工大学 | High-adaptability ether polycarboxylic acid and preparation method thereof |
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Application publication date: 20161005 |
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