CN107759122A - A kind of concrete subtracts jelly - Google Patents
A kind of concrete subtracts jelly Download PDFInfo
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- CN107759122A CN107759122A CN201711110209.3A CN201711110209A CN107759122A CN 107759122 A CN107759122 A CN 107759122A CN 201711110209 A CN201711110209 A CN 201711110209A CN 107759122 A CN107759122 A CN 107759122A
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
-
- 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
- C08F228/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur
- C08F228/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur by a bond to sulfur
-
- 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
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention belongs to building material technical field, discloses a kind of concrete and subtracts jelly, is made up of the raw material of following parts by weight：20 30 parts of vitamin C waste mother liquor, 0.01 0.05 parts of cocoyl glucoside, 58 parts of complexing agent, 30 40 parts of dispersant, 23 parts of reinforcing agent, 40 60 parts of water.The present invention subtracts jelly and passes through the synergy between each component, gelling material particles are made to obtain more preferable dispersion effect, effectively facilitate the hydration reaction efficiency of system, it can reduce by concrete more than 10% cement consumption, reduce concrete production cost, moreover it is possible to reduce the concrete cracking caused by binder materials excess.
Description
Technical field
The invention belongs to building material technical field, and in particular to a kind of concrete subtracts jelly.
Technical background
Since the 1990s, commerical ready-mixed concrete, which starts to substitute job mix concrete on a large scale, is applied to various construction
In.In order to meet the needs of concrete high workability and intensity, gel material content is universal higher in commerical ready-mixed concrete, typically exists
350kg/m3More than.High gel material content causes concrete to be easier to ftracture in concrete, especially in the relatively low feelings of water-cement ratio
Under condition, this phenomenon is more serious.In addition, hydrated cementitious degree research data shows in concrete both at home and abroad, in conventional environment
Under, the cement that 20-30% is there are about in concrete does not participate in hydration reaction.The production process of cement needs the lime of the amount consumed
The resources such as stone, clay and electric power, coal equal energy source, largely cement consumptions more than needed can also cause ample resources to waste in concrete,
And environment is had a huge impact.
The content of the invention
For the present invention in view of the above-mentioned problems, providing a kind of concrete subtracts jelly, concrete can ensured by adding after this subtracts jelly
Under conditions of service behaviour and physical property, cement consumption is effectively reduced.To reach above-mentioned purpose, the present invention uses following technology
Scheme：
A kind of concrete subtracts jelly, is made up of the raw material of following parts by weight：Vitamin C waste mother liquor 20-30 parts, cocoyl
Glucoside 0.01-0.05 parts, complexing agent 5-8 parts, dispersant 30-40 parts, reinforcing agent 2-3 parts, water 40-60 parts.
The vitamin C waste mother liquor is the caused waste liquid during crystallization produces thick Vc, contains 2-KLG, Vc, grape
The materials such as sugar, organic acid.
The complexing agent is one in tannic acid, fulvic acid, ATMP, diethylene triamine pentamethylene phosphonic
Kind.
Preferably, the complexing agent is fulvic acid.
Contain alpha-olefin sodium sulfonate-methacrylic acid copolymer in the dispersant.
Preferably, the preparation method of the dispersant is as follows：Raw material alpha-olefin sodium sulfonate, 2- propylene are added in the reactor
Amide groups -2- methyl propane sulfonic acids and deionized water, after letting nitrogen in and deoxidizing 10-20min, 60-90 DEG C is warming up to, is dripped in 3-6h point
The ammonium persulfate aqueous solution and methacrylic acid do not placed, continue react 1-2h after, be down to room temperature, both the dispersant.Its
The mol ratio of middle methacrylic acid and alpha-olefin sodium sulfonate is 1-3:1,2- acrylamide-2-methylpro panesulfonic acid weight is methyl
The 1%-3% of acrylic acid and alpha-olefin sodium sulfonate gross weight, sodium peroxydisulfate gross weight are methacrylic acid and alpha-olefin sodium sulfonate
The 2%-4% of gross weight, deionized water gross weight is 2-4 times of reactant gross weight in reaction.
Optionally, the dispersant is the polyethyleneimine that the degree of polymerization is 60-80.
The reinforcing agent is made up of ATS (Ammonium thiosulphate), ammonium humate and diethanol monoisopropanolamine.
Preferably, the reinforcing agent by ATS (Ammonium thiosulphate), ammonium humate and diethanol monoisopropanolamine by weight 5-8:
3-5:1 composition.
It is furthermore preferred that the reinforcing agent by by ATS (Ammonium thiosulphate), ammonium humate and diethanol monoisopropanolamine by weight
6:3:1 composition.
In the present invention, containing hydroxyl, the molecule of carboxyl functional group is largely carried in vitamin C waste mother liquor, there is scattered subtract
Water acts on, and particularly has good synergy with now widely used polycarboxylate water-reducer, can effectively improve water reducer
Water-reducing rate, water and cement consumption can be reduced under conditions of the identical service behaviour of concrete is ensured；Complexing agent by complexing and
Ion exchange, absorption of the metal ion in sandstone aggregate and binder materials to water reducer can be reduced, improves water reducer
Performance.Enhancing component in the present invention can fully activate the mineral admixture with lateral reactivity, so as to improve binder materials
Degree of hydration, improve concrete strength.
Due to the progress of grinding process, the particle of the binder materials such as the miberal powder used at present in concrete, cement is partially thin, when
When running into mixing water, gelling material particles easily attract each other, and form the three-dimensional flocculent structure of solid, including partial mix
Water, make the reduction of concrete fluidity, water reducer in the market can not effectively disperse special fine grain flocculent structure.And this hair
Dispersant in bright can effectively disperse these flocculent structures, gelling material particles is more fully contacted with water, on the one hand can be with
Help to discharge the moisture wrapped up in flocculent structure, improve concrete fluidity, on the other hand binder materials can be made more to be filled with water
The contact divided, improve reactivity.What deserves to be explained is dispersant of the present invention is prepared for polymerisation, conversion ratio
It can not reach absolutely, final product is made up of the polymer of the monomers such as unreacted alpha-olefin sodium sulfonate and generation, is not required to
Separated.Alpha-olefin sodium sulfonate therein has certain air-entraining function, and cocoyl glucoside is common in the present invention
Effect, largely stable micro-bubble can be introduced, the mobility of concrete can be increased, improve concrete workability, improved mixed
Coagulate native freezing-thawing resistance.
Beneficial effects of the present invention
By the synergy between each component, gelling material particles is obtained more preferable dispersion effect, effectively facilitate body
It the hydration reaction efficiency of system, can reduce by concrete more than 10% cement consumption, reduce concrete production cost, moreover it is possible to reduce
The concrete cracking caused by binder materials excess.
Embodiment
The present invention is made with reference to specific embodiment and further being elaborated, but embodiment is not done to the present invention
Any type of restriction.
Embodiment 1
A kind of concrete subtracts jelly, is made up of the raw material of following parts by weight：20 parts of vitamin C waste mother liquor, cocoyl Portugal
0.05 part of polyglycoside, 5 parts of complexing agent, 40 parts of dispersant, 2 parts of reinforcing agent, 60 parts of water.The vitamin C waste mother liquor is to crystallize
Caused waste liquid during thick Vc is produced, contains the materials such as 2-KLG, Vc, glucose, organic acid.
The complexing agent is tannic acid.
Contain alpha-olefin sodium sulfonate-methacrylic acid copolymer in the dispersant.
The reinforcing agent is made up of ATS (Ammonium thiosulphate), ammonium humate and diethanol monoisopropanolamine.
Embodiment 2
A kind of concrete subtracts jelly, is made up of the raw material of following parts by weight：30 parts of vitamin C waste mother liquor, cocoyl Portugal
0.01 part of polyglycoside, 8 parts of complexing agent, 30 parts of dispersant, 3 parts of reinforcing agent, 40 parts of water.The vitamin C waste mother liquor is to crystallize
Caused waste liquid during thick Vc is produced, contains the materials such as 2-KLG, Vc, glucose, organic acid.
The complexing agent is ATMP.
The preparation method of the dispersant is as follows：Add in the reactor raw material alpha-olefin sodium sulfonate, 2- acrylamidos-
2- methyl propane sulfonic acids and deionized water, after letting nitrogen in and deoxidizing 10min, 90 DEG C are warming up to, the persulfuric acid placed respectively is dripped in 3h
Aqueous ammonium and methacrylic acid, continue react 2h after, be down to room temperature, both the dispersant.Wherein methacrylic acid and α-
The mol ratio of alkene sulfonic acid sodium is 1:1,2- acrylamide-2-methylpro panesulfonic acid weight is methacrylic acid and alpha-olefin sulfonic acid
The 3% of sodium gross weight, sodium peroxydisulfate gross weight are the 2% of methacrylic acid and alpha-olefin sodium sulfonate gross weight, gone in reaction from
Sub- water gross weight is 4 times of reactant gross weight.
The reinforcing agent is by ATS (Ammonium thiosulphate), ammonium humate and diethanol monoisopropanolamine by weight 5:5:1 composition.
Embodiment 3
A kind of concrete subtracts jelly, is made up of the raw material of following parts by weight：25 parts of vitamin C waste mother liquor, cocoyl Portugal
0.04 part of polyglycoside, 7 parts of complexing agent, 36 parts of dispersant, 2.4 parts of reinforcing agent, 45 parts of water.
The complexing agent is diethylene triamine pentamethylene phosphonic.
Contain alpha-olefin sodium sulfonate-methacrylic acid copolymer in the dispersant, preparation method is as follows：In the reactor
Add raw material alpha-olefin sodium sulfonate, 2- acrylamide-2-methylpro panesulfonic acids and deionized water, after letting nitrogen in and deoxidizing 20min, heating
To 60 DEG C, the ammonium persulfate aqueous solution and methacrylic acid placed respectively are dripped in 6h, continues after reacting 1h, is down to room temperature,
Both the dispersant.Wherein the mol ratio of methacrylic acid and alpha-olefin sodium sulfonate is 3:1,2- acrylamido -2- methyl
Propane sulfonic acid weight is the 1% of methacrylic acid and alpha-olefin sodium sulfonate gross weight, sodium peroxydisulfate gross weight be methacrylic acid and
The 4% of alpha-olefin sodium sulfonate gross weight, deionized water gross weight is 2 times of reactant gross weight in reaction.
The reinforcing agent is by ATS (Ammonium thiosulphate), ammonium humate and diethanol monoisopropanolamine by weight 8:3:1 composition.
Embodiment 4
A kind of concrete subtracts jelly, is made up of the raw material of following parts by weight：27 parts of vitamin C waste mother liquor, cocoyl Portugal
0.02 part of polyglycoside, 6 parts of complexing agent, 35 parts of dispersant, 2.1 parts of reinforcing agent, 51 parts of water.The vitamin C waste mother liquor is to tie
Crystalline substance produces caused waste liquid during thick Vc, contains the materials such as 2-KLG, Vc, glucose, organic acid.
The complexing agent is fulvic acid.
The preparation method of the dispersant is as follows：Add in the reactor raw material alpha-olefin sodium sulfonate, 2- acrylamidos-
2- methyl propane sulfonic acids and deionized water, after letting nitrogen in and deoxidizing 16min, 74 DEG C are warming up to, the persulfuric acid placed respectively is dripped in 4h
Aqueous ammonium and methacrylic acid, continue react 1.5h after, be down to room temperature, both the dispersant.Wherein methacrylic acid and
The mol ratio of alpha-olefin sodium sulfonate is 2:1,2- acrylamide-2-methylpro panesulfonic acid weight is methacrylic acid and alpha-olefin sulphur
The 2.5% of sour sodium gross weight, sodium peroxydisulfate gross weight is the 3% of methacrylic acid and alpha-olefin sodium sulfonate gross weight, in reaction
Deionized water gross weight is 2.8 times of reactant gross weight.
The reinforcing agent is by by ATS (Ammonium thiosulphate), ammonium humate and diethanol monoisopropanolamine by weight 6:3:1 composition.
Embodiment 5
A kind of concrete subtracts jelly, is made up of the raw material of following parts by weight：28 parts of vitamin C waste mother liquor, cocoyl Portugal
0.04 part of polyglycoside, 8 parts of complexing agent, 34 parts of dispersant, 2.8 parts of reinforcing agent, 56 parts of water.
The complexing agent is fulvic acid.
The dispersant is the polyethyleneimine that the degree of polymerization is 60-80.
The reinforcing agent is made up of ATS (Ammonium thiosulphate), ammonium humate and diethanol monoisopropanolamine.
Embodiment 6
A kind of concrete subtracts jelly, is made up of the raw material of following parts by weight：23 parts of vitamin C waste mother liquor, cocoyl Portugal
0.035 part of polyglycoside, 6.5 parts of complexing agent, 36 parts of dispersant, 2.2 parts of reinforcing agent, 48 parts of water.
Comparative example 1
A kind of concrete subtracts jelly, is made up of the raw material of following parts by weight：0.02 part of cocoyl glucoside, complexing agent
6 parts, 35 parts of dispersant, 2.1 parts of reinforcing agent, 51 parts of water.
The complexing agent is fulvic acid.
The preparation method of the dispersant is as follows：Add in the reactor raw material alpha-olefin sodium sulfonate, 2- acrylamidos-
2- methyl propane sulfonic acids and deionized water, after letting nitrogen in and deoxidizing 16min, 74 DEG C are warming up to, the persulfuric acid placed respectively is dripped in 4h
Aqueous ammonium and methacrylic acid, continue react 1.5h after, be down to room temperature, both the dispersant.Wherein methacrylic acid and
The mol ratio of alpha-olefin sodium sulfonate is 2:1,2- acrylamide-2-methylpro panesulfonic acid weight is methacrylic acid and alpha-olefin sulphur
The 2.5% of sour sodium gross weight, sodium peroxydisulfate gross weight is the 3% of methacrylic acid and alpha-olefin sodium sulfonate gross weight, in reaction
Deionized water gross weight is 2.8 times of reactant gross weight.
The reinforcing agent is by by ATS (Ammonium thiosulphate), ammonium humate and diethanol monoisopropanolamine by weight 6:3:1 composition.
Comparative example 2
A kind of concrete subtracts jelly, is made up of the raw material of following parts by weight：27 parts of vitamin C waste mother liquor, cocoyl Portugal
0.02 part of polyglycoside, 35 parts of dispersant, 2.1 parts of reinforcing agent, 51 parts of water.
The vitamin C waste mother liquor is the caused waste liquid during crystallization produces thick Vc, contains 2-KLG, Vc, grape
The materials such as sugar, organic acid.
The preparation method of the dispersant is as follows：Add in the reactor raw material alpha-olefin sodium sulfonate, 2- acrylamidos-
2- methyl propane sulfonic acids and deionized water, after letting nitrogen in and deoxidizing 16min, 74 DEG C are warming up to, the persulfuric acid placed respectively is dripped in 4h
Aqueous ammonium and methacrylic acid, continue react 1.5h after, be down to room temperature, both the dispersant.Wherein methacrylic acid and
The mol ratio of alpha-olefin sodium sulfonate is 2:1,2- acrylamide-2-methylpro panesulfonic acid weight is methacrylic acid and alpha-olefin sulphur
The 2.5% of sour sodium gross weight, sodium peroxydisulfate gross weight is the 3% of methacrylic acid and alpha-olefin sodium sulfonate gross weight, in reaction
Deionized water gross weight is 2.8 times of reactant gross weight.
The reinforcing agent is by by ATS (Ammonium thiosulphate), ammonium humate and diethanol monoisopropanolamine by weight 6:3:1 composition.
Comparative example 3
A kind of concrete subtracts jelly, is made up of the raw material of following parts by weight：27 parts of vitamin C waste mother liquor, cocoyl Portugal
0.02 part of polyglycoside, 6 parts of complexing agent, 2.1 parts of reinforcing agent, 51 parts of water.
The vitamin C waste mother liquor is the caused waste liquid during crystallization produces thick Vc, contains 2-KLG, Vc, grape
The materials such as sugar, organic acid.
The complexing agent is fulvic acid.
The reinforcing agent is by by ATS (Ammonium thiosulphate), ammonium humate and diethanol monoisopropanolamine by weight 6:3:1 composition.
Performance test
1-6 of the embodiment of the present invention and comparative example the 1-3 concrete prepared are subtracted into jelly to be applied in concrete, and with not
The blank sample of plus-minus jelly is contrasted, and cement is using the Portland cement marked as 42.5, and sand is river sand, and stone is
2-25mm continuous grading rubble.Subtract 0.5% that jelly volume is total binder materials weight.Concrete mixture characteristic according to
GB/T50080《Standard for test methods of properties of ordinary concrete mixture standard》Test；Concrete strength is according to GB/T50081
《Standard for test methods of mechanical properties of ordinary concrete》Test.Concrete mix is shown in Table 1, and results of property is shown in Table 2.
The concrete mix of table 1
The results of property of table 2
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of concrete subtracts jelly, it is made up of the raw material of following parts by weight：Vitamin C waste mother liquor 20-30 parts, cocoyl Portugal
Polyglycoside 0.01-0.05 parts, complexing agent 5-8 parts, dispersant 30-40 parts, reinforcing agent 2-3 parts, water 40-60 parts.
2. a kind of concrete according to claim 1 subtracts jelly, it is characterised in that the complexing agent is tannic acid, yellow corruption
One kind in acid, ATMP, diethylene triamine pentamethylene phosphonic.
3. a kind of concrete according to claim 2 subtracts jelly, it is characterised in that the complexing agent is fulvic acid.
4. a kind of concrete according to claim 1 subtracts jelly, it is characterised in that contains alpha-olefin sulphur in the dispersant
Sour sodium-methacrylic acid copolymer.
5. a kind of concrete according to claim 1 subtracts jelly, it is characterised in that the preparation method of the dispersant is such as
Under：Raw material alpha-olefin sodium sulfonate, 2- acrylamide-2-methylpro panesulfonic acids and deionized water, logical nitrogen is added in the reactor to remove
After oxygen 10-20min, 60-90 DEG C is warming up to, the ammonium persulfate aqueous solution and methacrylic acid placed respectively are dripped in 3-6h,
Continue react 1-2h after, be down to room temperature, both the dispersant.
6. a kind of concrete according to claim 5 subtracts jelly, it is characterised in that in the preparation process of the dispersant,
The mol ratio of methacrylic acid and alpha-olefin sodium sulfonate is 1-3:1,2- acrylamide-2-methylpro panesulfonic acid weight is methyl-prop
The 1%-3% of olefin(e) acid and alpha-olefin sodium sulfonate gross weight, sodium peroxydisulfate gross weight are that methacrylic acid and alpha-olefin sodium sulfonate are total
The 2%-4% of weight, deionized water gross weight is 2-4 times of reactant gross weight in reaction.
7. a kind of concrete according to claim 1 subtracts jelly, it is characterised in that the reinforcing agent by ATS (Ammonium thiosulphate),
Ammonium humate and diethanol monoisopropanolamine composition.
8. a kind of concrete according to claim 6 subtracts jelly, it is characterised in that the reinforcing agent by ATS (Ammonium thiosulphate),
Ammonium humate and diethanol monoisopropanolamine are by weight 5~8:3~5:1 composition.
9. a kind of concrete subtracts the preparation method of jelly dispersant, it is characterised in that adds raw material alpha-olefin in the reactor
Sodium sulfonate, 2- acrylamide-2-methylpro panesulfonic acids and deionized water, after letting nitrogen in and deoxidizing 10-20min, 60-90 DEG C is warming up to,
The ammonium persulfate aqueous solution and methacrylic acid placed respectively are dripped in 3-6h, continues after reacting 1-2h, is down to room temperature, both
The dispersant.
10. a kind of concrete according to claim 9 subtracts the preparation method of jelly dispersant, it is characterised in that methyl
The mol ratio of acrylic acid and alpha-olefin sodium sulfonate is 1-3:1,2- acrylamide-2-methylpro panesulfonic acid weight is methacrylic acid
With the 1%-3% of alpha-olefin sodium sulfonate gross weight, sodium peroxydisulfate gross weight is methacrylic acid and alpha-olefin sodium sulfonate gross weight
2%-4%, deionized water gross weight is 2-4 times of reactant gross weight in reaction.
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| CN201711110209.3A CN107759122B (en) | 2017-11-12 | 2017-11-12 | Concrete glue reducing agent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110386773A (en) * | 2019-06-28 | 2019-10-29 | 浙江老虎山建材有限公司 | A kind of concrete subtracts the preparation method of jelly |
| CN112979210A (en) * | 2021-01-29 | 2021-06-18 | 西安同成建筑科技有限责任公司 | Anti-adsorption concrete glue reducing agent and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110386773A (en) * | 2019-06-28 | 2019-10-29 | 浙江老虎山建材有限公司 | A kind of concrete subtracts the preparation method of jelly |
| CN112979210A (en) * | 2021-01-29 | 2021-06-18 | 西安同成建筑科技有限责任公司 | Anti-adsorption concrete glue reducing agent and application thereof |
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