CN116715814A - Glue-reducing polycarboxylate superplasticizer, concrete and production system thereof - Google Patents
Glue-reducing polycarboxylate superplasticizer, concrete and production system thereof Download PDFInfo
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- CN116715814A CN116715814A CN202311000169.2A CN202311000169A CN116715814A CN 116715814 A CN116715814 A CN 116715814A CN 202311000169 A CN202311000169 A CN 202311000169A CN 116715814 A CN116715814 A CN 116715814A
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- stirring
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- concrete
- glue
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- 239000004567 concrete Substances 0.000 title claims abstract description 72
- 229920005646 polycarboxylate Polymers 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000008030 superplasticizer Substances 0.000 title claims description 15
- 238000003756 stirring Methods 0.000 claims abstract description 134
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 239000000178 monomer Substances 0.000 claims abstract description 20
- 239000008367 deionised water Substances 0.000 claims abstract description 19
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 19
- QVDTXNVYSHVCGW-ONEGZZNKSA-N isopentenol Chemical compound CC(C)\C=C\O QVDTXNVYSHVCGW-ONEGZZNKSA-N 0.000 claims abstract description 13
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 13
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 13
- 239000012986 chain transfer agent Substances 0.000 claims abstract description 12
- 239000007800 oxidant agent Substances 0.000 claims abstract description 12
- 239000002002 slurry Substances 0.000 claims abstract description 12
- 239000002253 acid Substances 0.000 claims abstract description 11
- 230000001590 oxidative effect Effects 0.000 claims abstract description 11
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 24
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 24
- 239000000654 additive Substances 0.000 claims description 22
- 230000000996 additive effect Effects 0.000 claims description 22
- 239000011259 mixed solution Substances 0.000 claims description 21
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 claims description 15
- 229920001400 block copolymer Polymers 0.000 claims description 14
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 12
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 12
- 229960005070 ascorbic acid Drugs 0.000 claims description 12
- 235000010323 ascorbic acid Nutrition 0.000 claims description 12
- 239000011668 ascorbic acid Substances 0.000 claims description 12
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 7
- JLTDJTHDQAWBAV-UHFFFAOYSA-N N,N-dimethylaniline Chemical compound CN(C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-N 0.000 claims description 6
- WQAQPCDUOCURKW-UHFFFAOYSA-N butanethiol Chemical compound CCCCS WQAQPCDUOCURKW-UHFFFAOYSA-N 0.000 claims description 6
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 claims description 6
- GSFSVEDCYBDIGW-UHFFFAOYSA-N 2-(1,3-benzothiazol-2-yl)-6-chlorophenol Chemical compound OC1=C(Cl)C=CC=C1C1=NC2=CC=CC=C2S1 GSFSVEDCYBDIGW-UHFFFAOYSA-N 0.000 claims description 3
- INRFMNKGJCROAZ-UHFFFAOYSA-N 2-hydroxy-2-sulfinylacetic acid Chemical compound OC(=O)C(O)=S=O INRFMNKGJCROAZ-UHFFFAOYSA-N 0.000 claims description 3
- FRQQKWGDKVGLFI-UHFFFAOYSA-N 2-methylundecane-2-thiol Chemical compound CCCCCCCCCC(C)(C)S FRQQKWGDKVGLFI-UHFFFAOYSA-N 0.000 claims description 3
- FRIBMENBGGCKPD-UHFFFAOYSA-N 3-(2,3-dimethoxyphenyl)prop-2-enal Chemical compound COC1=CC=CC(C=CC=O)=C1OC FRIBMENBGGCKPD-UHFFFAOYSA-N 0.000 claims description 3
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 claims description 3
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical class [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 claims description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 229910001379 sodium hypophosphite Inorganic materials 0.000 claims description 3
- 230000004308 accommodation Effects 0.000 claims description 2
- 238000013016 damping Methods 0.000 description 19
- 239000004568 cement Substances 0.000 description 18
- 239000004575 stone Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 12
- 239000002245 particle Substances 0.000 description 12
- 239000000203 mixture Substances 0.000 description 9
- 238000005507 spraying Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000004576 sand Substances 0.000 description 7
- 238000000429 assembly Methods 0.000 description 6
- 230000000712 assembly Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 6
- 235000013339 cereals Nutrition 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910000617 Mangalloy Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- QFGIVKNKFPCKAW-UHFFFAOYSA-N [Mn].[C] Chemical compound [Mn].[C] QFGIVKNKFPCKAW-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001212 derivatisation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010897 surface acoustic wave method Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 235000020985 whole grains Nutrition 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- 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
- C04B24/16—Sulfur-containing compounds
- C04B24/161—Macromolecular compounds comprising sulfonate or sulfate groups
- C04B24/166—Macromolecular compounds comprising sulfonate or sulfate groups obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/10—Mixing in containers not actuated to effect the mixing
- B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
- B28C5/14—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a horizontal or substantially horizontal axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/48—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions wherein the mixing is effected by vibrations
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
-
- 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
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
-
- 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
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The application discloses a glue-reducing type polycarboxylate water reducer, concrete and a production system thereof, wherein the glue-reducing type polycarboxylate water reducer comprises an isopentenol polyoxyethylene ether macromonomer, an unsaturated acid monomer, a defoaming monomer, a chain transfer agent, an oxidant, a reducing agent and deionized water, wherein the mass ratio of the oxidant to the reducing agent is 3.5:1-4.2:1; the chain transfer agent accounts for the proportion of the total components of the monomer: 0.75% -0.85%; the deionized water accounts for 72% -78% of the total component content. A concrete production system comprising: a reaction device configured to form an admixture and to add the admixture into the stir chamber; the stirring device comprises a stirring chamber and a stirring assembly arranged in the stirring chamber, and the stirring chamber is used for containing concrete raw materials; the stirring assembly is used for stirring the slurry in the stirring chamber and comprises a stirring shaft and at least one stirring blade arranged on the stirring shaft; the stirring blade is provided with a vibration component, and the vibration component comprises an ultrasonic transducer arranged on the stirring blade.
Description
Technical Field
The application relates to the technical field of construction materials, in particular to a gel-reducing polycarboxylate superplasticizer, concrete and a production system thereof.
Background
The concrete industry is continuously developed and replaced at present, and various oversized building engineering requires the concrete industry to meet various construction requirements and various special performances. The performance indexes such as low cost, environmental protection, high performance, high strength, excellent construction performance, high and low temperature resistance, durability and the like become the primary problems to be solved urgently in the concrete industry.
The gel reducing water reducer is a comprehensive concrete admixture, and the cement or other cementing materials are reduced by improving the workability of concrete and the overall slurry amount of the concrete.
However, in the conventional concrete production process, raw materials are quantitatively introduced into a stirring chamber and stirred by a stirring device, and the raw materials are stirred and mixed and then discharged through a discharge port. However, in the production process, the concrete raw materials are unevenly mixed or a large amount of gas is mixed in the concrete, so that the performance of the concrete can be directly or indirectly influenced.
Disclosure of Invention
In view of the foregoing drawbacks or shortcomings in the prior art, it is desirable to provide a reduced-size polycarboxylate superplasticizer, concrete, and a production system thereof that can improve the performance of the concrete.
In a first aspect, the present application provides a gel-reducing polycarboxylate superplasticizer comprising: an isopentenol polyoxyethylene ether macromonomer, an unsaturated acid monomer, a defoaming monomer, a chain transfer agent, an oxidant, a reducing agent and deionized water,
wherein the mass ratio of the oxidant to the reducing agent is 3.5:1-4.2:1;
the chain transfer agent accounts for the proportion of the total components of the monomer: 0.75% -0.85%;
the deionized water accounts for 72% -78% of the total component content.
Optionally, the unsaturated acid monomer includes at least one of acrylic acid and methacrylic acid; the defoaming monomer comprises at least one of polyoxyethylene-polyoxypropylene block copolymer and polyoxyethylene-polyoxypropylene block copolymer; the chain transfer agent comprises at least one of thioglycollic acid, n-butyl mercaptan, tertiary dodecyl mercaptan and sodium dimethyl dithiocarbamate; the oxidant comprises at least one of tert-butyl hydroperoxide, cumene hydroperoxide and hydrogen peroxide; the reducing agent includes at least one of sodium hypophosphite, disodium salt of 2-hydroxy-2-sulfinylacetic acid, ascorbic acid and N, N-dimethylaniline.
Optionally, the composition comprises the following components in parts by weight: 360 parts of isopentenol polyoxyethylene ether macromonomer, 50 parts of acrylic acid, 32.4 parts of polyoxyethylene-polyoxypropylene block copolymer, 3.5 parts of thioglycollic acid, 2.8 parts of hydrogen peroxide, 0.7 part of ascorbic acid and 1327 parts of deionized water.
Optionally, the composition comprises the following components in parts by weight: 325 parts of isopentenol polyoxyethylene ether macromonomer, 45 parts of acrylic acid, 35 parts of polyoxyethylene-polyoxypropylene block copolymer, 3.2 parts of thioglycollic acid, 2.4 parts of hydrogen peroxide, 0.6 part of ascorbic acid and 1217 parts of deionized water.
In a second aspect, the application provides a glue-reducing and water-reducing concrete, which is formed by mixing concrete raw materials and the glue-reducing type polycarboxylate superplasticizer as an additive.
In a third aspect, the present application provides a production system for a glue-reducing water-reducing concrete for preparing a glue-reducing water-reducing concrete as described above, comprising:
a reaction device configured to form the admixture and add the admixture into a mixing chamber;
the stirring device comprises a stirring chamber and a stirring assembly arranged in the stirring chamber, and the stirring chamber is used for containing concrete raw materials; the stirring assembly is used for stirring the slurry in the stirring chamber and comprises a stirring shaft and at least one stirring blade arranged on the stirring shaft; the stirring blade is provided with a vibration assembly, and the vibration assembly comprises an ultrasonic transducer arranged on the stirring blade.
Optionally, the reaction device comprises a first reaction kettle, a second reaction kettle and a third reaction kettle, wherein the first reaction kettle is used for adding a part of raw materials of the water reducer to prepare a first mixed solution, the second reaction kettle is used for adding another part of raw materials of the water reducer to prepare a second mixed solution, the third reaction kettle is used for adding the rest of raw materials of the water reducer to prepare a third mixed solution,
the first reaction kettle adds the first mixed solution into the third reaction kettle through a first dripping component, and the second reaction kettle adds the second mixed solution into the third reaction kettle through a second dripping component, so that the additive is obtained by reaction in the third reaction kettle.
Optionally, the stirring vane comprises a main body and a sealed cavity arranged on the main body; the ultrasonic transducer is arranged in the sealed cavity and is contacted with the main body through a resonance conducting layer;
at least part of the outer surface of the main body is covered with a resonance contact layer in a conformal manner, and the resonance contact layer is contacted with the slurry in the stirring chamber.
Optionally, the stirring blade further includes: the vibration reduction support assembly is movably arranged in the sealed cavity and comprises a center support extending along the main body and four side supports arranged on the side surface of the center support and extending along the radial direction of the center support, and four stop blocks respectively matched with the four side supports are arranged on the inner surface of the main body; the four stoppers form accommodating spaces for allowing the side brackets to displace with the inner surface of the main body in the accommodating spaces when the vibration reduction support assembly is deformed.
Optionally, the included angle between the axes of two adjacent side brackets is 30-120 degrees, and the included angles between the side brackets and the transverse direction are smaller than 90 degrees;
the side support comprises a first side sub-support, a second side sub-support, a third side sub-support and a fourth side sub-support, the axis of the first side sub-support and the axis of the third side sub-support are collinear, and the axis of the second side sub-support and the axis of the fourth side sub-support are collinear;
the side bracket includes a spherical wear block disposed at an end in contact with an inner surface of the body;
the stop block comprises a contact surface which is contacted with the side bracket, and the wear-resistant block is fixed between the two contact surfaces;
the contact surface has an angle of more than 90 DEG between a side close to the accommodation space and the inner surface of the main body.
The technical scheme provided by the embodiment of the application can comprise the following beneficial effects:
the gel-reducing polycarboxylate superplasticizer, the concrete and the production system thereof provided by the embodiment of the application greatly reduce the dosage of the cementing material in the cement concrete and improve the performance of the concrete on the basis of ensuring various performances of the cement concrete; the production system realizes vibration dispersion to the slurry in the stirring chamber while stirring by arranging the vibration component on the stirring blade, so as to improve the mixing effect of the concrete.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a production system according to an embodiment of the present application;
fig. 2 is a schematic structural view of a stirring vane according to an embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of a stirring vane according to an embodiment of the present application;
FIG. 4 is a schematic cross-sectional view at A-A of FIG. 2;
FIG. 5 is an enlarged view of a portion of FIG. 4;
fig. 6 is a schematic cross-sectional view at B-B in fig. 2.
Detailed Description
The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the application are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
According to the technical specification of concrete admixture application (GB-50119-2013), the present polycarboxylic acid high-performance water reducer is generally divided into a standard type, an early strength type and a retarding type according to the performance of the polycarboxylic acid high-performance water reducer. Polycarboxylic acids have molecular designability which gives them diversity and derivatization of their molecular structure, in other words, by synthesizing reactive macromers and small monomers of different functions according to a certain formulation and a certain process, it is possible to polymerize into polycarboxylic acid products having a certain specific function.
The concrete provided by the application can be used on the basal planes of an indoor and outdoor emery wear-resistant terrace, a terrazzo terrace, a magma light-receiving terrace, an ultra-flat terrace, a common cement terrace, stone and the like, is suitable for cement-based places such as factory workshops, warehouses, market supermarkets, wharfs, airport runways, bridges, highways and the like.
The concrete admixture is a substance which is added for improving and adjusting the performance of concrete, the application of the concrete admixture in engineering is more and more important, the addition of the admixture plays a certain role in improving the performance of concrete, and in the embodiment of the application, the admixture with the functions of reducing the glue and the water is adopted, so that the cement consumption can be reduced, and the strength of the concrete can be enhanced.
The application provides a gel-reducing polycarboxylate water reducer, which comprises the following components: an isopentenol polyoxyethylene ether macromonomer, an unsaturated acid monomer, a defoaming monomer, a chain transfer agent, an oxidant, a reducing agent and deionized water,
wherein the mass ratio of the oxidant to the reducing agent is 3.5:1-4.2:1;
the chain transfer agent accounts for the proportion of the total components of the monomer: 0.75% -0.85%;
the deionized water accounts for 72% -78% of the total component content.
Optionally, the unsaturated acid monomer includes at least one of acrylic acid and methacrylic acid; the defoaming monomer comprises at least one of polyoxyethylene-polyoxypropylene block copolymer and polyoxyethylene-polyoxypropylene block copolymer; the chain transfer agent comprises at least one of thioglycollic acid, n-butyl mercaptan, tertiary dodecyl mercaptan and sodium dimethyl dithiocarbamate; the oxidant comprises at least one of tert-butyl hydroperoxide, cumene hydroperoxide and hydrogen peroxide; the reducing agent includes at least one of sodium hypophosphite, disodium salt of 2-hydroxy-2-sulfinylacetic acid, ascorbic acid and N, N-dimethylaniline.
Preferably, the water content of each raw material of the gel-reducing polycarboxylate superplasticizer provided by the embodiment of the application is as follows: 75%; oxidizing agent: reducing agent = 4:1, a step of; the chain transfer agent accounts for the proportion of the total components of the monomer: 0.8%.
The application also provides a glue-reducing water-reducing concrete, which is formed by mixing concrete raw materials and the glue-reducing polycarboxylate superplasticizer as an additive. The glue-reducing water-reducing concrete comprises the following raw materials in parts by weight:
100 parts of cement;
185-230 parts of sand;
260-280 parts of crushed stone;
1-1.6 parts of an additive;
the balance of water.
Optionally, the composition comprises the following components in parts by weight: 100 parts of cement; sand, 210 parts; stone, 276 parts; 1.3 parts of additive; wherein, the liquid crystal display device comprises a liquid crystal display device,
the broken stone comprises at least one of broken stone with the grain size of 5-10mm and broken stone with the grain size of 10-20mm, and the mass ratio of the broken stone with the grain size of 5-10mm to the broken stone with the grain size of 10-20mm is 1:1.2-1:1.8.
Example 1
The additive is prepared from the following components in parts by weight: 360 parts of isopentenol polyoxyethylene ether macromonomer, 50 parts of acrylic acid, 32.4 parts of polyoxyethylene-polyoxypropylene block copolymer, 3.5 parts of thioglycollic acid, 2.8 parts of hydrogen peroxide, 0.7 part of ascorbic acid and 1327 parts of deionized water.
Taking C50 cement concrete as an example, the weight ratio is as follows:
cement (p.o42.5) sand: crushed stone with the particle size of 5-10mm, crushed stone with the particle size of 10-20mm, water and additive = 100:226:108:173:32:1.6.
Example 2
The additive is prepared from the following components in parts by weight: 325 parts of isopentenol polyoxyethylene ether macromonomer, 45 parts of acrylic acid, 35 parts of polyoxyethylene-polyoxypropylene block copolymer, 3.2 parts of thioglycollic acid, 2.4 parts of hydrogen peroxide, 0.6 part of ascorbic acid and 1217 parts of deionized water.
Taking C50 cement concrete as an example, the weight ratio is as follows:
cement (p.o42.5) sand: crushed stone with the particle size of 5-10mm, crushed stone with the particle size of 10-20mm, water and additive = 100:226:108:173:36:1.2.
Example 3
The additive is prepared from the following components in parts by weight: 360 parts of isopentenol polyoxyethylene ether macromonomer, 49 parts of acrylic acid, 3.6 parts of polyoxyethylene-polyoxypropylene block copolymer, 3.2 parts of thioglycollic acid, 2.4 parts of hydrogen peroxide, 0.6 part of ascorbic acid and 1237 parts of deionized water.
Taking C50 cement concrete as an example, the weight ratio is as follows:
cement (p.o42.5) sand: crushed stone with the particle size of 5-10mm, crushed stone with the particle size of 10-20mm, water and additive = 100:210:126:154:32:1.2.
Example 4
The additive is prepared from the following components in parts by weight: 360 parts of isopentenol polyoxyethylene ether macromonomer, 49 parts of acrylic acid, 10.8 parts of polyoxyethylene-polyoxypropylene block copolymer, 3.4 parts of thioglycollic acid, 2.4 parts of hydrogen peroxide, 0.6 part of ascorbic acid and 1258 parts of deionized water.
Taking C50 cement concrete as an example, the weight ratio is as follows: cement (p.o42.5) sand: crushed stone with the particle size of 5-10mm, crushed stone with the particle size of 10-20mm, water and additive=100:210:126:154:36:1.
Comparative example
The commercial Point-TS8 polycarboxylate superplasticizer is selected as an additive, and C50 cement concrete is taken as an example, and the weight ratio is as follows:
cement (p.o42.5) sand: crushed stone with the particle size of 5-10mm, crushed stone with the particle size of 10-20mm, water and additive=117:226:108:173:32:1.6.
The slump and the expansion degree of the concrete are measured according to GB-8076-2008 concrete admixture, and the concrete test results are shown in Table 1.
TABLE 1
As can be seen from the test results in Table 1, the performances of the examples are better than those of the comparative examples, and the results of the examples 1-4 and the comparative examples show that the additive provided by the application can effectively improve the initial dispersion performance and slump retaining performance of concrete, so that the product has obvious effect of reducing the gel and the water.
The application provides a production system of a glue-reducing and water-reducing type concrete, as shown in fig. 1, for preparing the glue-reducing and water-reducing type concrete, comprising:
a reaction device 100, said reaction device 100 being configured to form said admixture and to add said admixture into a mixing chamber 210;
a stirring device 200, wherein the stirring device 200 comprises a stirring chamber 210 and a stirring assembly 220 arranged in the stirring chamber 210, and the stirring chamber 210 is used for containing concrete raw materials; the stirring assembly 220 is used for stirring the slurry in the stirring chamber 210, and the stirring assembly 220 comprises a stirring shaft 221 and at least one stirring blade 222 arranged on the stirring shaft 221; the stirring blade 222 is provided with a vibration assembly 230, and the vibration assembly 230 includes an ultrasonic transducer 231 provided on the stirring blade 222.
Some stirring chambers 210 in the prior art are provided with a vibrating rod to realize vibration stirring of concrete in the reaction chamber, and the mode needs the stirring blade 222 to avoid the position of the vibrating rod, so that stirring of the stirring blade 222 is affected, and the stirring effect is not ideal. In addition, since the vibrating member is disposed in the stirring chamber 210 or on the inner wall or outer wall of the stirring chamber 210, the noise is loud, noise pollution is generated, the stability of the stirring apparatus 200 is also affected, and the vibration is transmitted to the position of the transmission motor through the stirring shaft 221 or the like, so that the service life of the transmission assembly is affected.
In the embodiment of the application, the vibration assembly 230 is arranged on the stirring blade 222, so that the slurry in the stirring chamber 210 is dispersed in a vibration way while stirring, and the mixing effect of concrete is improved. The reaction apparatus 100 is used to configure the admixture provided in the present application.
Wherein the reaction device 100 comprises a first reaction kettle 110, a second reaction kettle 120 and a third reaction kettle 130, wherein the first reaction kettle 110 is used for adding a part of raw materials of the water reducer to prepare a first mixed solution, the second reaction kettle 120 is used for adding another part of raw materials of the water reducer to prepare a second mixed solution, the third reaction kettle 130 is used for adding the rest of raw materials of the water reducer to prepare a third mixed solution, wherein,
the first reaction kettle 110 adds the first mixed solution into the third reaction kettle 130 through a first dripping assembly 140, and the second reaction kettle 120 adds the second mixed solution into the third reaction kettle 130 through a second dripping assembly 150, so as to react in the third reaction kettle 130 to obtain the additive. Stirring mechanisms 220 may be provided in the reaction kettles in the reaction apparatus 100. The structure of the stirring mechanism 220 may be the same as that of the stirring assembly 220 of the stirring device 200 according to the present application, and will be described in detail below.
When the device is specifically arranged, each dripping assembly can control the piston rod 142 to move up and down through the dripping motor 141, so as to push the additive in the dosage cylinder 143 to be filled into the corresponding reaction kettle through the dripping pipe 144.
For example, taking the mixture ratio in the first embodiment as an example, the method for preparing the additive comprises the following steps:
(1) 50 parts of acrylic acid, 32.4 parts of polyoxyethylene-polyoxypropylene segmented copolymer and 427 parts of deionized water are stirred and dispersed uniformly in a first reaction kettle 110 according to the mass ratio to prepare a first mixed solution;
(2) 3.5 parts of thioglycollic acid, ascorbic acid and 300 parts of deionized water are uniformly stirred and dispersed in the second reaction kettle 120 according to the mass ratio to prepare a second mixed solution;
(3) 360 parts of isopentenol polyoxyethylene ether macromonomer and 300 parts of deionized water are heated in a third reaction kettle 130 according to the mass ratio to be 40 ℃ until the mixture is completely dissolved to prepare a third mixed solution;
(4) Adding 2.8 parts of hydrogen peroxide into the third mixed solution in the third reaction kettle 130, and stirring for 5 minutes;
(5) Simultaneously dripping the first mixed solution and the second mixed solution into the third reaction kettle 130 through the first dripping assembly 140 and the second dripping assembly 150, and stirring for 3 hours;
(6) After the dripping is finished, the temperature is kept at 40 ℃ for reaction for 1 hour;
(7) Cooling to room temperature, and adding alkali to neutralize to pH 6-7.
In addition, in the embodiment of the present application, a spraying assembly is further disposed on the stirring chamber 210, and the spraying assembly is in communication with the reaction apparatus 100, and is used for adding an additive into the stirring chamber 210.
The spraying device 300 comprises a spraying pipe 510 communicated with the third reaction kettle 130 in the reaction device 100 and a plurality of expansion covers 520 arranged on the spraying pipe 510, wherein a spraying head 530 is arranged at the bottom of the expansion covers 520; the spraying device 300 is connected with the third reaction kettle 130 through a fixing flange and a connecting flange, the fixing flange is arranged on the third reaction kettle 130, and the connecting flange is arranged at one end of the spraying pipe 510. The area that shower head 530 sprayed the water-reducing agent can be increased, the shower head 530 sprays in to the teeter chamber 210, the water-reducing agent that sprays that can make is more even, improves concrete water-reducing agent sprinkler's work efficiency and sprays the quality.
The application provides a mode of directly arranging the vibration component 230 on the stirring blade 222, which can realize vibration in the rotation process of the blade 222 and improve the vibration effect and stirring effect; by providing the vibration damping support assembly 250 for damping the vibration of the main body 10 of the blade 222 on the blade 222, the vibration of the main body 10 of the blade 222 can be reduced, the influence on the motor, the stirring shaft 221 and the like can be reduced, the service life of the transmission assembly and the transmission reliability can be improved, and the good working condition of the transmission motor can be ensured.
In the application, the vibration component 230 adopts an ultrasonic vibration mode to generate surface acoustic waves which propagate along the inner wall of the outer piece, and vibration energy with certain frequency, amplitude and exciting force is transmitted to the concrete slurry, so that parameters such as the vibration speed, acceleration and amplitude of material particles are improved, and the stirring effect is directly enhanced. The grain composition in the concrete can be improved, so that the whole grain accumulation of the concrete is more compact and reasonable, and the workability of the concrete mixture and the structure of the hardened concrete are improved. Meanwhile, the probability of collision and fusion between various materials and particles in the vibrated concrete mixture is increased, so that the working efficiency and the homogenizing effect of stirring are improved.
As shown in fig. 2-6, the stirring vane 222 includes a main body 10 and a sealed cavity 20 provided on the main body 10; the ultrasonic transducer 231 is disposed within the sealed cavity 20, and the ultrasonic transducer 231 is in contact with the body 10 through a resonant conductive layer 232. In the embodiment of the application, the ultrasonic transducer 231 is arranged in the sealing cavity, so that the service life of the vibration assembly 230 can be prolonged, and the vibration assembly 230 is prevented from being worn, damaged and the like in the stirring process.
In order to facilitate the fixed installation of the vibration assembly 230 in the main body 10, the main body 10 includes a first housing 101 and a second housing 102 that are fixedly disposed, the sealed cavity 20 is formed between the first housing 101 and the second housing 102, and the first housing 101 and the second housing 102 may be fixed by welding after being respectively molded to form the main body 10 structure.
In order to implement the manner in which the ultrasonic transducer 231 is disposed in the sealed cavity 20 in the embodiment of the present application, the production system further includes:
at least one vibration supporting member 240 provided at the sealed cavity 20, the vibration supporting member 240 including a center supporting frame 241 extending along the body 10 (e.g., provided in an X-direction) and at least two side supporting frames 242 provided at sides of the center supporting frame 241 and extending in a radial direction (e.g., provided in a Z-direction) of the center supporting frame 241, the side supporting frames 242 being in contact with an inner surface of the body 10.
The ultrasonic transducer 231 is disposed at an end of the side support 242 near the main body 10, and the ultrasonic transducer 231 is in contact with the main body 10 through the resonance conductive layer 232.
The number of the vibration supporting units 240 and the number of the ultrasonic transducers 231 on the vibration unit 230 are not limited in the embodiment of the present application, and when the vibration unit 230 is installed, one ultrasonic transducer 231 may be installed on each of the side supporting frames 242, and a plurality of ultrasonic transducers 231 may be selectively installed on each of the side supporting frames 242 along the extending direction of the main body 10, and in various embodiments, the number of the ultrasonic transducers 231 may be set as required.
It should be understood that, in the embodiment of the present application, the shape of the stirring blade 222 is not limited, and the stirring blade 222 may be linear or curved, and the stirring blade 222 may be disposed on the stirring shaft 221 perpendicular to the axis of the stirring shaft 221, disposed at an angle with the axis of the stirring shaft 221, and disposed on the stirring shaft 221 in a spiral manner. In the embodiment of the present application, the extending direction of the stirring blade 222 is set perpendicular to the axis of the stirring shaft 221.
In the embodiment of the present application, the vibration supporting assembly 240 may be arranged in different manners according to the shape of the stirring blade 222, the extending direction of the main body 10 may be the length direction of the main body 10 or the width direction of the main body 10, and in addition, the central supporting frame 241 and the central supporting frame 251 may be arranged in parallel or in an included angle, which is not limited in the embodiment of the present application, and the central supporting frame 251 and the central supporting frame 241 may be arranged in different manners according to the shape or the arrangement of the stirring blade 222.
It should be noted that, when the stirring apparatus 200 is operated, the speed near the center of the circular stirring drum is low, and the speed at the drum wall is high, so that the uniformity of different circular bands in the stirring drum is different, and the center of the stirring drum becomes a stirring inefficiency area.
In the present application, the stirring blade 222 is disposed perpendicularly to the axis of the stirring shaft 221, and the center support and the center bracket 251 are each extended in the X direction, which is the longitudinal direction of the main body 10, and in the Y direction, which is the width direction, which is the extending direction perpendicular to the main body 10. The width of the stirring vane 222 in the X direction gradually decreases, and the stirring vane 222 is provided with a blade at least at one edge thereof to enhance the stirring effect. The cross-sectional shape of the stirring blade 222 in the Y direction is not limited in the embodiment of the present application, and may be prismatic, circular arc, curved, or the like. In the present application, the inner diameter of the stirring blade 222 is gradually decreased in a direction from the center of the stirring blade 222 to both sides in a cross section along the Y direction of the stirring blade 222.
The vibration assembly 230 further includes an ultrasonic generator 233 disposed inside the main body 10 to be electrically connected with the ultrasonic transducer, and a resonance conductive layer 232 disposed inside the main body 10 to be in contact with the ultrasonic transducer. The ultrasonic generator provides high-frequency alternating current signal excitation matched with the ultrasonic transducer 231 device through an ultrasonic wire, the ultrasonic transducer converts the high-frequency alternating current signal excitation into high-frequency vibration and then transmits the high-frequency vibration to the resonance conducting layer 232, and the high-frequency vibration is generated by driving the slurry to generate high-frequency vibration through the conduction of the resonance conducting sheet to the resonance contact layer 234.
It will be appreciated that resonant conductive layer 232 in the present application is used to receive and conduct ultrasonic vibrations on the one hand and resonant conductive layer 232 on the other hand can also be used to enhance the mechanical properties of body 10, reduce direct contact of the ultrasonic generating device with the body 10 of blade 222 for high frequency vibrations, enhance the life of blade 222, and facilitate replacement of components as resonant conductive layer 232 wears.
In one embodiment of the present application, the ultrasonic transducer 231 is electrically connected to the ultrasonic generator 233 by connecting wires provided on the center support 241 and/or the side support 242. Through setting up connecting wire on center support frame 241 and can conveniently walk the line through on the side support frame 242, prevent to walk to interfere between the line, save inner space etc. a plurality of ultrasonic transducers 231 on same center support frame 241 can adopt parallelly connected or series connection's mode, realize the electricity and connect.
In another embodiment, by arranging a plurality of ultrasonic transducers 231 in a grouping and sectioning mode, resonance frequencies at different positions can be obtained through experiments before operation, and when vibration is performed, the ultrasonic transducers 231 are controlled to generate resonance with specific intensity to the blade 222. Namely, the same center support 241 includes a plurality of preset areas, the plurality of ultrasonic transducers 231 in the same preset area are connected in series, and the ultrasonic transducers 231 connected in series are connected in the same resonant frequency; the plurality of ultrasonic transducers 231 in different preset areas are connected in parallel, and different resonance frequencies are adopted on the ultrasonic transducers 231 connected in parallel. Thereby realizing the control of resonance effect according to the stirring area.
In addition, at least a portion of the outer surface of the body 10 is conformally covered with a resonant contact layer 234, the resonant contact layer 234 being in contact with the slurry within the stir chamber 210. The main body 10 of the stirring vane 222 may be made of high-quality wear-resistant alloy materials, such as carbon-manganese steel, stainless steel, zirconium, nickel-based alloy and other composite materials. By providing the resonance contact layer 234 that matches the ultrasonic characteristics of the ultrasonic transducer 231 to be in direct contact with the concrete raw material, the energy transfer efficiency is higher, and the resonance effect of the blade 222 can be improved.
It will be appreciated that in embodiments of the present application, mounting holes may be provided in the body 10 for the ultrasonic transducer 231 to directly contact the resonant contact layer 234, although the resonant contact layer 234 may also contact the ultrasonic vibration assembly 230 by other structures, such as by a resonant conductive member passing through the body 10, which is not a limitation of the present application.
In order to reduce the vibration caused by the ultrasonic vibration assembly 230 disposed on the blade 222 and reduce the influence on the motor, the stirring shaft 221, etc., the stirring blade 222 further comprises: a vibration damping support assembly 250 movably installed in the sealed cavity 20, the vibration damping support assembly 250 including a center bracket 251 extending along the main body 10 (e.g., disposed in the X-direction) and four side brackets 252 disposed at sides of the center bracket 251 and extending in a radial direction of the center bracket 251 (forming an angle with the Z-direction), the inner surface of the main body 10 being provided with four stoppers 253 respectively engaged with the four side brackets 252; the four stoppers 253 form receiving spaces for allowing the side brackets 252 to be displaced from the inner surface of the main body 10 in the receiving spaces when the vibration damping support assembly 250 is deformed.
When the device is specifically arranged, the included angle between the axes of two adjacent side brackets 252 is 30-120 degrees, and the included angle between the side brackets 252 and the transverse direction is smaller than 90 degrees.
The side bracket 252 includes a first side sub-bracket 252-1, a second side sub-bracket 252-2, a third side sub-bracket 252-3, and a fourth side sub-bracket 252-4, the axis of the first side sub-bracket 252-1 and the axis of the third side sub-bracket 252-3 are collinear, and the axis of the second side sub-bracket 252-2 and the axis of the fourth side sub-bracket 252-4 are collinear.
Each sub-mount 252 of the side mounts 252 includes a spherical wear block 254 provided at an end in contact with the inner surface of the main body 10; the wear-resistant block 254 may be made of a wear-resistant material, such as stainless steel, chrome-zirconium-copper alloy, iron-nickel alloy, or the like.
The stop 253 includes a contact surface contacting the side bracket 252, and the wear block is fixed between the contact surfaces; the contact surface has an angle of more than 90 ° between the side close to the receiving space and the inner surface of the body 10.
In the embodiment of the application, through the vibration reduction support assembly 250 arranged inside the blade 222, when the blade 222 main body 10 vibrates during stirring or ultrasonic resonance, the accommodating space formed by the stop block 253 arranged on the main body 10 also deforms or vibrates, at this time, the vibration reduction support assembly 250 can move in the accommodating space along with the deformation or vibration of the blade 222 main body 10, the internal acting force of the blade 222 can be absorbed and dissipated through the deformation or movement mode of the support frame, and certain vibration or deformation can be consumed through the friction between the wear-resisting block and the inner surface of the blade 222, so that the service life of the blade 222 and the vibration reduction effect of the blade 222 are improved, the vibration of the blade 222 main body 10 is prevented from being transmitted to the transmission assembly through the stirring shaft 221 and the like, the service life is prolonged, and the noise is reduced.
The vibration damping support assembly 250 is installed in the sealed space of the main body 10 in a pressing mode, when the vibration damping support assembly 250 is installed, certain prestress exists between the vibration damping support assembly 250 and the inner surface of the main body 10, the vibration damping support assembly 250 can be pressed in the sealed space to play a role in supporting, and strength of the blade 222 is enhanced. The vibration damping support assemblies 250 in the present application are arranged along the longitudinal direction X of the blade 222, and when vibration or deformation occurs at different positions of the blade 222, the vibration damping support assemblies 250 at corresponding positions can be deformed or moved to realize vibration damping suction.
Likewise, the direction and number of the vibration damping support assemblies 250 are not limited in the embodiment of the present application, and the number of the side brackets 252 on the vibration damping support assemblies 250 is not limited, and may be set as needed in different embodiments.
Optionally, the number of the vibration supporting assemblies 240 is two, and the vibration supporting assemblies 240 are respectively located at two sides of the vibration damping supporting assembly 250. The vibration supporting assembly 240 includes two side supporting frames 242, and the two side supporting frames 242 are respectively in contact with the first housing 101 and the second housing 102.
In the embodiment of the present application, the vibration supporting component 240 and the vibration damping supporting component 250 can be used as flexible supports for the blade 222, so as to improve the mechanical performance of the blade 222, and the vibration supporting component 240 and the vibration damping supporting component 250 are in interference contact fit with the inner surface of the main body 10, so that when the first casing 101 and the second casing 102 are installed, the vibration damping supporting component 250 and the vibration damping supporting component 240 are compressed and provide a certain pretightening force, and when the blade 222 swings, the vibration supporting component 240 is made of a flexible material, so that the internal stress of the blade 222 can be absorbed.
In addition, the vibration assembly 230 is arranged on the stirring blade 222, so that concrete can be prevented from adhering to the stirring shaft 221 or the stirring blade 222, and concrete materials can be effectively separated from the stirring blade 222 during stirring, and the stirring speed and quality of the concrete can be effectively improved.
It should be understood that the terms "-length", "-width", "-up", "-down", "-front", "-back", "-left", "-right", "-vertical", "-horizontal", "-top", "-bottom", "-inner", "-outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the application.
Furthermore, the terms "-first", "-second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "-first", "-second" may explicitly or implicitly include one or more such feature. In the description of the present application, "-a plurality" means two or more unless specifically defined otherwise.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the application. Terms such as "-set" as used herein may refer to either one component being directly attached to another component or one component being attached to another component through an intermediary. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.
The present application has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the application to the embodiments described. Those skilled in the art will appreciate that many variations and modifications are possible in light of the teachings of the application, which variations and modifications are within the scope of the application as claimed.
Claims (10)
1. The utility model provides a subtract gluey polycarboxylate water reducing agent which characterized in that includes: an isopentenol polyoxyethylene ether macromonomer, an unsaturated acid monomer, a defoaming monomer, a chain transfer agent, an oxidant, a reducing agent and deionized water,
wherein the mass ratio of the oxidant to the reducing agent is 3.5:1-4.2:1;
the chain transfer agent accounts for the proportion of the total components of the monomer: 0.75% -0.85%;
the deionized water accounts for 72% -78% of the total component content.
2. The reduced-size polycarboxylate superplasticizer as recited in claim 1, wherein said unsaturated acid monomer comprises at least one of acrylic acid and methacrylic acid; the defoaming monomer comprises at least one of polyoxyethylene-polyoxypropylene block copolymer and polyoxyethylene-polyoxypropylene block copolymer; the chain transfer agent comprises at least one of thioglycollic acid, n-butyl mercaptan, tertiary dodecyl mercaptan and sodium dimethyl dithiocarbamate; the oxidant comprises at least one of tert-butyl hydroperoxide, cumene hydroperoxide and hydrogen peroxide; the reducing agent includes at least one of sodium hypophosphite, disodium salt of 2-hydroxy-2-sulfinylacetic acid, ascorbic acid and N, N-dimethylaniline.
3. The glue-reducing polycarboxylate superplasticizer as defined in claim 1, comprising the following components in parts by weight: 360 parts of isopentenol polyoxyethylene ether macromonomer, 50 parts of acrylic acid, 32.4 parts of polyoxyethylene-polyoxypropylene block copolymer, 3.5 parts of thioglycollic acid, 2.8 parts of hydrogen peroxide, 0.7 part of ascorbic acid and 1327 parts of deionized water.
4. The glue-reducing polycarboxylate superplasticizer as defined in claim 1, comprising the following components in parts by weight: 325 parts of isopentenol polyoxyethylene ether macromonomer, 45 parts of acrylic acid, 35 parts of polyoxyethylene-polyoxypropylene block copolymer, 3.2 parts of thioglycollic acid, 2.4 parts of hydrogen peroxide, 0.6 part of ascorbic acid and 1217 parts of deionized water.
5. A glue-reducing and water-reducing concrete, which is characterized in that the glue-reducing and water-reducing type polycarboxylate superplasticizer is formed by mixing concrete raw materials and the glue-reducing type polycarboxylate superplasticizer as defined in any one of claims 1-4 as an additive.
6. A production system for a glue-reducing and water-reducing concrete, characterized in that it is used for preparing the glue-reducing and water-reducing concrete according to claim 5, comprising:
a reaction device configured to form the admixture and add the admixture into a mixing chamber;
the stirring device comprises a stirring chamber and a stirring assembly arranged in the stirring chamber, and the stirring chamber is used for containing concrete raw materials; the stirring assembly is used for stirring the slurry in the stirring chamber and comprises a stirring shaft and at least one stirring blade arranged on the stirring shaft; the stirring blade is provided with a vibration assembly, and the vibration assembly comprises an ultrasonic transducer arranged on the stirring blade.
7. The system for producing concrete with reduced size and water according to claim 6, wherein the reaction device comprises a first reaction kettle, a second reaction kettle and a third reaction kettle, wherein the first reaction kettle is used for adding a part of raw materials of the water reducing agent to prepare a first mixed solution, the second reaction kettle is used for adding another part of raw materials of the water reducing agent to prepare a second mixed solution, the third reaction kettle is used for adding the rest of raw materials of the water reducing agent to prepare a third mixed solution,
the first reaction kettle adds the first mixed solution into the third reaction kettle through a first dripping component, and the second reaction kettle adds the second mixed solution into the third reaction kettle through a second dripping component, so that the additive is obtained by reaction in the third reaction kettle.
8. The system for producing reduced-glue, reduced-water concrete according to claim 6, wherein the stirring blade comprises a main body and a sealed cavity provided on the main body; the ultrasonic transducer is arranged in the sealed cavity and is contacted with the main body through a resonance conducting layer;
at least part of the outer surface of the main body is covered with a resonance contact layer in a conformal manner, and the resonance contact layer is contacted with the slurry in the stirring chamber.
9. The production system of reduced-glue and reduced-water concrete according to claim 8, wherein the stirring blade further comprises: the vibration reduction support assembly is movably arranged in the sealed cavity and comprises a center support extending along the main body and four side supports arranged on the side surface of the center support and extending along the radial direction of the center support, and four stop blocks respectively matched with the four side supports are arranged on the inner surface of the main body; the four stoppers form accommodating spaces for allowing the side brackets to displace with the inner surface of the main body in the accommodating spaces when the vibration reduction support assembly is deformed.
10. The production system of the glue-reducing and water-reducing type concrete according to claim 9, wherein an included angle between axes of two adjacent side brackets is 30-120 degrees, and the included angles between the side brackets and the transverse direction are all smaller than 90 degrees;
the side support comprises a first side sub-support, a second side sub-support, a third side sub-support and a fourth side sub-support, the axis of the first side sub-support and the axis of the third side sub-support are collinear, and the axis of the second side sub-support and the axis of the fourth side sub-support are collinear;
the side bracket includes a spherical wear block disposed at an end in contact with an inner surface of the body;
the stop block comprises a contact surface which is contacted with the side bracket, and the wear-resistant block is fixed between the two contact surfaces;
the contact surface has an angle of more than 90 DEG between a side close to the accommodation space and the inner surface of the main body.
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| JP2007054959A (en) * | 2005-08-22 | 2007-03-08 | Nikko Co Ltd | Concrete mixer |
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| US20190330109A1 (en) * | 2018-04-25 | 2019-10-31 | Shin-Etsu Chemical Co., Ltd. | Preparation of water-reducing composition, water-reducing composition and hydraulic composition |
| CN109516715A (en) * | 2018-05-25 | 2019-03-26 | 湖北工业大学 | A kind of polycarboxylate water-reducer work liquid and preparation method thereof suitable for clear-water concrete |
| CN209257239U (en) * | 2018-08-06 | 2019-08-16 | 荆门市飞图混凝土有限公司 | The full-automatic feed proportioning system of concrete |
| CN209393166U (en) * | 2018-12-21 | 2019-09-17 | 福建三凯建筑材料有限公司 | A kind of highly effective reaction kettle being used for water-reducing agent with grinding function |
| CN111592269A (en) * | 2019-02-21 | 2020-08-28 | 天水师范学院 | Method and device for synthesizing polycarboxylate superplasticizer through multi-copolymerization |
| WO2021103473A1 (en) * | 2019-11-25 | 2021-06-03 | 科之杰新材料集团有限公司 | Shrinkage-reducing polycarboxylic acid water reducing agent and preparation method thereof |
| CN112497430A (en) * | 2020-10-26 | 2021-03-16 | 西安科技大学 | Color-changeable high-strength concrete brick and production process and manufacturing equipment thereof |
| CN215277318U (en) * | 2021-06-07 | 2021-12-24 | 抚顺东科精细化工有限公司 | Defoaming device is used in polycarboxylate water reducing agent monomer production |
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