CN105541210B - A kind of graphene oxide concrete - Google Patents
A kind of graphene oxide concrete Download PDFInfo
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- CN105541210B CN105541210B CN201510998362.9A CN201510998362A CN105541210B CN 105541210 B CN105541210 B CN 105541210B CN 201510998362 A CN201510998362 A CN 201510998362A CN 105541210 B CN105541210 B CN 105541210B
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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
- 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
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/308—Slump-loss preventing agents
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of graphene oxide concrete, including following components:115~415 parts of cement, 30~50 parts of flyash, 50~90 parts of miberal powder, 940~1070 parts of stone, 720~1040 parts of sand, 155~190 parts of water, 4.15~11.70 parts of graphene reinforcing agent, wherein, graphene reinforcing agent protects collapse component, 3.2~3.6% sodium gluconates, 8~12% graphene oxides, 0.4~0.6% stabilizer polyvinylpyrrolidone, 51~66% deionized waters including 10~14% diminishing components, 12~18%.The present invention solves bad dispersibility in graphene oxide concrete in the prior art, cement matrix defect is caused to cause the technological deficiency of loss of strength, the microstructure of hydrolysis product of cement can effectively be regulated and controled, the intensity of concrete, impervious and durability are improved, makes to improve 30%~46% with proportioning concrete strength.
Description
Technical field
The present invention relates to a kind of concrete, more particularly to a kind of graphene oxide concrete.
Background technology
With the rapid development of economy, the construction of China's infrastructure is like a raging fire, highway, bridge, railway, nuclear power,
The large projects such as water power, harbour, ocean are just carrying out large-scale construction, and scale is unprecedented, and concrete structure is good with its
Overall performance, be easy to construction and the cost of relative moderate to be widely used in foundation construction field always, China has every year
About 2,000,000,000 side's concrete are used for architectural engineering, and construction has accounted for the 70% of Gross World Product with cement output, but concrete
Major defect be fragility, crack and infiltration, be thus to cause its hydraulic performance decline, service life the problems such as caused easy crack
The main cause of shortening.
In cement concrete industry, additive is had been widely used in cement concrete, and on the one hand economize on resources protection
For the purpose of environment, on the other hand for improving the chemical composition of cement matrix, improving the pore structure of Behavior of Hardened Cement Paste, regulate and control hydrated cementitious
Process, makes the more uniform densification of the gel in cement, reduces the generation of needle-like entringite so that water mudrock structure is more caused
It is close, so as to effectively improve the intensity of concrete, impervious and durability.The grain diameter of cement is mostly at 7~200 μm, still
Its most hydrated product C-S-H gel is nano-scale., not only can be with by filling nano material in binder materials
Play a part of filling pore, the high energy surface of nano material can also play nucleation.The surface energy and C-S- of nano material
H gel-formings are bonded, and induction entringite grows in nano material annex, eventually forms using nano material as node, and C-S-H coagulates
Glue is the three-dimensional space network structure of network, so as to greatly improve after hardening of cement the physical and mechanical property of slurry and durable
Property.Shenghua Lv et al. obtain the oxygen that oxygen content is 29.75% using improved Hummers methods graphite oxide and ultrasound
Graphite alkene is simultaneously compounded in cement-based material.Result of the test shows that the graphene oxide of 0.03% mass volume can
The resistance to compression, bending resistance and tensile strength of cement mortar are significantly improved, 38.9%, 60.7% and 78.6% is respectively increased.Graphene oxide
The microstructure of hydrolysis product of cement can effectively be regulated and controled to improve the intensity and toughness of cement-based material.
But graphene oxide specific surface area is very big, easily flocculated under alkaline environment, therefore graphene oxide is direct
Flocculation can be produced in incorporation cement, this is scattered very unfavorable in cement-based material for graphene oxide, can directly affect oxygen
The enhancing effect that graphite alkene is produced, or even loss of strength can be caused due to generation cement matrix defect of reuniting.
The content of the invention
It is an object of the invention to provide a kind of graphene oxide concrete, existed with solving graphene oxide in the prior art
In cement, concrete inorganic material the problem of bad dispersibility, cement matrix defect is caused to cause the technological deficiency of loss of strength.
What the present invention was realized in:
Graphene oxide concrete, including following components, each component is by weight:
115~415 parts of cement;
30~50 parts of flyash;
50~90 parts of miberal powder;
940~1070 parts of stone;
720~1040 parts of sand;
155~190 parts of water;
4.15~11.70 parts of graphene reinforcing agent;
Wherein, the component of graphene reinforcing agent includes by weight percentage:10~14% diminishing components, 12~18%, which are protected, to collapse
Component, 3.2~3.6% sodium gluconates, 8~12% graphene oxides, 0.4~0.6% stabilizer, 51~66% deionized waters;
Wherein, diminishing component includes 30~35% methyl alkenyl APEOs, 3~4% acrylic acid, 61~67% deionizations,
Methyl alkenyl APEO and acrylic acid are synthetic copolymer;
Wherein, protecting component of collapsing includes 25~30% allyl polyethenoxy base ethers, 10~15% maleic anhydrides, 1%~3% propylene
Acid, 5~8% ethylene glycol diacrylates, 44~59% deionized waters;Allyl polyethenoxy base ether, maleic anhydride, acrylic acid and
Ethylene glycol diacrylate is synthesis high-molecular copolymer;
Wherein, stabilizer is polyvinylpyrrolidone.
The graphene oxide concrete that the present invention is provided, wherein, by weight, preferably 315 parts of cement, flyash are preferred
40 parts, preferably 65 parts of miberal powder, preferably 1055 parts of stone, preferably 790 parts of sand, preferably 165 parts of water, graphene reinforcing agent preferably 8.5
Part.
Wherein, by weight percentage, diminishing component preferably 12%, guarantor's component of collapsing are preferred for the component of graphene reinforcing agent
16%th, sodium gluconate preferably 3.4%, graphene oxide preferably 10%, stabilizer preferably 0.5%, deionized water preferably 58.1%.
Wherein, diminishing component by weight percentage, methyl alkenyl APEO preferably 33%, acrylic acid preferably 3.5%,
Deionized water preferably 63.5%, methyl alkenyl APEO and acrylic acid are synthetic copolymer.
Wherein, protect and collapse component by weight percentage, allyl polyethenoxy base ether preferably 27%, maleic anhydride are preferred
12%th, acrylic acid preferably 2%, ethylene glycol diacrylate preferably 6%, deionized water preferably 53%, allyl polyethenoxy base ether, horse
It is synthesis high-molecular copolymer to come acid anhydrides, acrylic acid and ethylene glycol diacrylate.
Wherein, the Portland cement of cement preferred intensity class 4 2.5;The grain diameter of stone preferably 5~31.5mm;
The modulus of fineness of sand preferably 3.0~2.3.
Beneficial effects of the present invention:
1st, the graphene oxide concrete that the present invention is provided, can significantly reduce the hole inside Behavior of Hardened Cement Paste, improve Behavior of Hardened Cement Paste
Pore structure, make the more uniform densification of the gel in cement, can significantly reduce the generation of needle-like entringite so that Behavior of Hardened Cement Paste
Structure is finer and close, enables to CH grain refinements in cement, so that effectively regulate and control the microstructure of hydrolysis product of cement,
Improve the intensity of concrete, impervious and durability.
2nd, the graphene oxide concrete that the present invention is provided, with the addition of graphene reinforcing agent, the graphene reinforcing agent is one
Plant based on carboxylic acid polyalcohol and the high efficiency composition concrete intensifier of graphene oxide, be black non transparent liquid, it is nontoxic
Harmless, pollution-free, "dead", proportion is 1.15g/cm3, the composition that chloride ion-containing and alkali etc. are not harmful to concrete, the increasing
Strong agent meets concrete construction and quality requirement.
3rd, the graphene reinforcing agent in the graphene oxide concrete that the present invention is provided is aliphatic high-efficiency diminishing, protects group of collapsing
Divide the compounding with graphene oxide, aliphatic high-efficiency diminishing, which is protected, collapses component using polyethers, carbonyls as primary raw material, suitable
Pass through branch chain graft reaction synthctic fat race macromolecular chain, the proportionate carboxyl of shape and polyethylene oxide base under conditions of
Functional group, and appropriate side chain branch chain density and long side chain molecular weight, obtain diminishing and guarantor is collapsed characteristic, the graphene reinforcing agent
The polarity for protecting component of collapsing using the polar group in graphene oxide and diminishing is acted on, and graphene oxide is dispersed, fat
The efficient diminishing of race, guarantor's component of collapsing belong to anionic polymer surfactant, and its distinguishing feature is that water-reducing rate is high, slump retaining is good, nothing
Chlorine, low alkali, graphene oxide reinforcing agent are improved with proportioning concrete strength 30%~46%.
Embodiment
Embodiment 1:
The graphene reinforcing agent of graphene oxide concrete:
(1)10% diminishing component, 12% is taken to protect collapse component, 3.2% sodium gluconate, 8% graphene oxide, 0.4% stabilizer
Polyvinylpyrrolidone, 66% deionized water;
Wherein, diminishing component includes by weight percentage:30% methyl alkenyl APEO, 3% acrylic acid, 67% are gone
Ionized water;
Wherein, protect component of collapsing includes by weight percentage:25% allyl polyethenoxy base ether, 10% maleic anhydride, 1%
Acrylic acid, 5% ethylene glycol diacrylate, 59% deionized water;
(2)By diminishing component, protect in component addition deionized water of collapsing, it is standby after stirring;
(3)Sodium gluconate is added, stirring mixing adds sodium hydroxide and adjusts solution to adjust pH value to 7.0, then adds
Through the 20KHz graphene oxides of ultrasonically treated 3 hours, stirring mixing is finally slowly added to stabilizer polyvinylpyrrolidone, stirred
Mix uniform rear obtained graphene reinforcing agent.
Embodiment 2:
The graphene reinforcing agent of graphene oxide concrete:
(1)14% diminishing component, 18% is taken to protect collapse component, 3.6% sodium gluconate, 12% graphene oxide, 0.6% stabilization
Agent polyvinylpyrrolidone, 51% deionized water;
Wherein, diminishing component includes by weight percentage:35% methyl alkenyl APEO, 4% acrylic acid, 61%
Deionized water;
Wherein, protect component of collapsing includes by weight percentage:30% allyl polyethenoxy base ether, 15% maleic anhydride, 3%
Acrylic acid, 8% ethylene glycol diacrylate, 44% deionized water;
(2)By diminishing component, protect in component addition deionized water of collapsing, it is standby after stirring;
(3)Sodium gluconate is added, stirring mixing adds sodium hydroxide and adjusts solution to adjust pH value to 7.0, then adds
Through the 20KHz graphene oxides of ultrasonically treated 3 hours, stirring mixing is finally slowly added to stabilizer polyvinylpyrrolidone, stirred
Mix uniform rear obtained graphene reinforcing agent.
Embodiment 3:
The graphene reinforcing agent of graphene oxide concrete:
(1)12% diminishing component, 16% is taken to protect collapse component, 3.4% sodium gluconate, 10% graphene oxide, 0.5% stabilization
Agent polyvinylpyrrolidone, 58.1% deionized water;
Wherein, diminishing component includes by weight percentage:33% methyl alkenyl APEO, 3.5% acrylic acid,
63.5% deionized water;
Wherein, protect component of collapsing includes by weight percentage:27% allyl polyethenoxy base ether, 12% maleic anhydride, 2%
Acrylic acid, 6% ethylene glycol diacrylate, 53% deionized water;
(2)By diminishing component, protect in component addition deionized water of collapsing, it is standby after stirring;
(3)Sodium gluconate is added, stirring mixing adds sodium hydroxide and adjusts solution to adjust pH value to 7.0, then adds
Through the 20KHz graphene oxides of ultrasonically treated 3 hours, stirring mixing is finally slowly added to stabilizer polyvinylpyrrolidone, stirred
Mix uniform rear obtained graphene reinforcing agent.
Embodiment 4
Graphene oxide concrete, including following components, each component is by weight:
115 parts of cement, 50 parts of flyash, 90 parts of miberal powder, 940 parts of stone, 995 parts of sand, 190 parts of water, graphene enhancing
4.15 parts of agent;
Wherein, graphene enhancer component content and preparation are provided with embodiment 3 graphene enhancer component content and
Preparation method is identical;
Wherein, cement is the Portland cement of strength grade 42.5;The grain diameter of stone is 5~31.5mm;Sand
Modulus of fineness is 3.0~2.3.
Embodiment 5
Graphene oxide concrete, including following components, each component is by weight:
210 parts of cement, 30 parts of flyash, 60 parts of miberal powder, 870 parts of stone, 1040 parts of sand, 190 parts of water, graphene enhancing
5.9 parts of agent;
Wherein, graphene enhancer component content and preparation are provided with embodiment 3 graphene enhancer component content and
Preparation method is identical;
Wherein, cement is the Portland cement of strength grade 42.5;The grain diameter of stone is 5~31.5mm;Sand
Modulus of fineness is 3.0~2.3.
Embodiment 6
Graphene oxide concrete, including following components, each component is by weight:
210 parts of cement, 30 parts of flyash, 60 parts of miberal powder, 1020 parts of stone, 905 parts of sand, 175 parts of water, graphene enhancing
6.05 parts of agent;
Wherein, graphene enhancer component content and preparation are provided with embodiment 3 graphene enhancer component content and
Preparation method is identical;
Wherein, cement is the Portland cement of strength grade 42.5;The grain diameter of stone is 5~31.5mm;Sand
Modulus of fineness is 3.0~2.3.
Embodiment 7
Graphene oxide concrete, including following components, each component is by weight:
230 parts of cement, 30 parts of flyash, 65 parts of miberal powder, 1030 parts of stone, 880 parts of sand, 170 parts of water, graphene enhancing
6.5 parts of agent;
Wherein, graphene enhancer component content and preparation are provided with embodiment 3 graphene enhancer component content and
Preparation method is identical;
Wherein, cement is the Portland cement of strength grade 42.5;The grain diameter of stone is 5~31.5mm;Sand
Modulus of fineness is 3.0~2.3.
Embodiment 8
Graphene oxide concrete, including following components, each component is by weight:
260 parts of cement, 40 parts of flyash, 70 parts of miberal powder, 1050 parts of stone, 835 parts of sand, 170 parts of water, graphene enhancing
7.7 parts of agent;
Wherein, graphene enhancer component content and preparation are provided with embodiment 3 graphene enhancer component content and
Preparation method is identical;
Wherein, cement is the Portland cement of strength grade 42.5;The grain diameter of stone is 5~31.5mm;Sand
Modulus of fineness is 3.0~2.3.
Embodiment 9
Graphene oxide concrete, including following components, each component is by weight:
295 parts of cement, 40 parts of flyash, 60 parts of miberal powder, 1050 parts of stone, 820 parts of sand, 165 parts of water, graphene enhancing
8.25 parts of agent;
Wherein, graphene enhancer component content and preparation are provided with embodiment 3 graphene enhancer component content and
Preparation method is identical;
Wherein, cement is the Portland cement of strength grade 42.5;The grain diameter of stone is 5~31.5mm;Sand
Modulus of fineness is 3.0~2.3.
Embodiment 10
Graphene oxide concrete, including following components, each component is by weight:
315 parts of cement, 40 parts of flyash, 65 parts of miberal powder, 1055 parts of stone, 790 parts of sand, 165 parts of water, graphene enhancing
8.5 parts of agent;
Wherein, graphene enhancer component content and preparation are provided with embodiment 3 graphene enhancer component content and
Preparation method is identical;
Wherein, cement is the Portland cement of strength grade 42.5;The grain diameter of stone is 5~31.5mm;Sand
Modulus of fineness is 3.0~2.3.
Embodiment 11
Graphene oxide concrete, including following components, each component is by weight:
340 parts of cement, 45 parts of flyash, 70 parts of miberal powder, 1060 parts of stone, 760 parts of sand, 165 parts of water, graphene enhancing
10.05 parts of agent;
Wherein, graphene enhancer component content and preparation are provided with embodiment 3 graphene enhancer component content and
Preparation method is identical;
Wherein, cement is the Portland cement of strength grade 42.5;The grain diameter of stone is 5~31.5mm;Sand
Modulus of fineness is 3.0~2.3.
Embodiment 12
Graphene oxide concrete, including following components, each component is by weight:
385 parts of cement, 45 parts of flyash, 50 parts of miberal powder, 1065 parts of stone, 755 parts of sand, 160 parts of water, graphene enhancing
10.8 parts of agent;
Wherein, graphene enhancer component content and preparation are provided with embodiment 3 graphene enhancer component content and
Preparation method is identical;
Wherein, cement is the Portland cement of strength grade 42.5;The grain diameter of stone is 5~31.5mm;Sand
Modulus of fineness is 3.0~2.3.
Embodiment 13
Graphene oxide concrete, including following components, each component is by weight:
415 parts of cement, 40 parts of flyash, 50 parts of miberal powder, 1070 parts of stone, 720 parts of sand, 155 parts of water, graphene enhancing
11.7 parts of agent;
Wherein, graphene enhancer component content and preparation are provided with embodiment 3 graphene enhancer component content and
Preparation method is identical;
Wherein, cement is the Portland cement of strength grade 42.5;The grain diameter of stone is 5~31.5mm;Sand
Modulus of fineness is 3.0~2.3.
The graphene oxide concrete provided below embodiment 4 to embodiment 13 carries out performance test, and with being not added with stone
The concrete ratio of black alkene reinforcing agent is compared, and the results are shown in Table 1.
The concrete performance contrast table of table 1
Claims (5)
1. a kind of graphene oxide concrete, it is characterised in that including following components, each component is by weight:
115~415 parts of cement
30~50 parts of flyash
50~90 parts of miberal powder
940~1070 parts of stone
720~1040 parts of sand
155~190 parts of water
4.15~11.70 parts of graphene reinforcing agent
Wherein, the component of the graphene reinforcing agent includes by weight percentage:10~14% diminishing components, 12~18%, which are protected, to collapse
Component, 3.2~3.6% sodium gluconates, 8~12% graphene oxides, 0.4~0.6% stabilizer, 51~66% deionized waters, respectively
Upper constituent content sum is 100%;
Wherein, the diminishing component includes by weight percentage:30~35% methyl alkenyl APEOs, 3~4% propylene
Acid, 61~67% deionized waters;
Wherein, the component of collapsing of protecting includes by weight percentage:25~30% allyl polyethenoxy base ethers, 10~15% Malaysias
Acid anhydrides, 1%~3% acrylic acid, 5~8% ethylene glycol diacrylates, 44~59% deionized waters;
Wherein, the stabilizer is polyvinylpyrrolidone.
2. graphene oxide concrete according to claim 1, it is characterised in that:By weight, the cement is 315
Part, the flyash is 40 parts, and the miberal powder is 65 parts, and the stone is 1055 parts, and the sand is 790 parts, and the water is 165
Part and the graphene reinforcing agent are 8.5 parts.
3. graphene oxide concrete according to claim 1, it is characterised in that the component of the graphene reinforcing agent with
Percentage by weight meter includes:12% diminishing component, 16% protect component of collapsing, it is 3.4% sodium gluconate, 10% graphene oxide, 0.5% steady
Determine agent, 58.1% deionized water.
4. graphene oxide concrete according to claim 1, it is characterised in that the diminishing component is with percentage by weight
Meter includes:33% methyl alkenyl APEO, 3.5% acrylic acid, 63.5% deionized water.
5. graphene oxide concrete according to claim 1, it is characterised in that the guarantor collapses component with percentage by weight
Meter includes:27% allyl polyethenoxy base ether, 12% maleic anhydride, 2% acrylic acid, 6% ethylene glycol diacrylate, 53% go from
Sub- water.
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CN106082837A (en) * | 2016-06-03 | 2016-11-09 | 广州大学 | A kind of graphene conductive concrete |
CN106431137A (en) * | 2016-09-21 | 2017-02-22 | 太原理工大学 | Grapheme concrete and preparation method thereof |
CN107337363B (en) * | 2016-12-30 | 2019-12-27 | 江苏苏博特新材料股份有限公司 | Cement concrete durability enhancing additive |
CN107010893A (en) * | 2017-04-10 | 2017-08-04 | 河海大学 | A kind of graphene/carbon nano-tube cement group water-proofing material and preparation method thereof |
CN107216077A (en) * | 2017-06-17 | 2017-09-29 | 中康建设管理股份有限公司 | A kind of graphene modified concrete and its manufacture method |
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CN109553366B (en) * | 2019-01-31 | 2020-09-22 | 深圳大学 | Graphene modified cement-based composite material and preparation method thereof |
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CN103130436B (en) * | 2013-03-25 | 2015-03-18 | 中国科学院上海硅酸盐研究所 | Oxidized graphene and graphene reinforced cement based composite material and preparation method thereof |
CN103241983B (en) * | 2013-05-22 | 2014-07-16 | 陕西科技大学 | Preparation method of graphene oxide modified polycarboxylic acid type water-reducer |
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