CN109574589A - A kind of cement products repairing high-strength cracking resistance repairing powder and preparation method thereof - Google Patents
A kind of cement products repairing high-strength cracking resistance repairing powder and preparation method thereof Download PDFInfo
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- CN109574589A CN109574589A CN201811510537.7A CN201811510537A CN109574589A CN 109574589 A CN109574589 A CN 109574589A CN 201811510537 A CN201811510537 A CN 201811510537A CN 109574589 A CN109574589 A CN 109574589A
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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
- 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
- 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
- C04B28/06—Aluminous cements
-
- 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
- C04B28/06—Aluminous cements
- C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
-
- 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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
Abstract
The invention belongs to the field of building materials, a kind of cement products repairing high-strength cracking resistance repairing powder and preparation method thereof is specifically disclosed, which includes following raw materials according component, in parts by weight: 300-400 parts of cement, 15-40 parts of silicon ash, 400-600 parts of building sand, 25-40 parts of swelling agent, 0.5-1.0 parts of hydroxypropyl methyl cellulose, 0.5-1.0 parts of redispersable latex powder, 100-200 parts of powdered whiting, 0.3-0.8 parts of fiber, 0.8-1.5 parts of water-reducing agent.The made cement products repairing of the present invention is with high-strength cracking resistance repairing powder by the way of concentrating proportion production, the patching material arbitrarily prepared compared with traditional-handwork, quality is more reliable and more stable, compression strength is high, endurance quality is good, good with cement products adhesive property, not easily to fall off, later period microdilatancy, shrinkage cracking, intensity rising can occur fastly after effective handle, can effectively shorten and go out ETCD estimated time of commencing discharging after repairing.It can preferably ensure the quality of finished of cement products after repairing.
Description
Technical field
The invention belongs to the field of building materials more particularly to a kind of cement products repairing with high-strength cracking resistance repairing powder and its
Preparation method.
Background technique
Since reform and opening-up, national economy achieves development at full speed, while the building trade in China, transportation industry, water
Operation industry also all achieves the development of blowout, while every infrastructure constantly improve, the type and skill of cement products
Art also constantly improve.
However, cement products type constantly it is diversified simultaneously, the patching material of cement products but never obtain
Attention in the industry, most cement products production and constructions enterprise are all to repair in such a way that cement plus water simply mixes and stirs come mixing
Material is mended, the equality strength of repairing product is unable to reach after on the one hand repairing, another aspect mend is easy to appear cracking, falls off
The problems such as, the cement products quality repaired hardly results in guarantee.
Summary of the invention
The object of the present invention is to provide a kind of cement products repairing high-strength cracking resistance repairing powders and preparation method thereof, with more
The concentration manner of formulation for adding science makes a kind of high, not easy to crack, the not easily to fall off patching material of intensity after repairing, repairing
Cement products quality afterwards can be ensured preferably.
To achieve the goals above, present invention employs following technical solutions:
Present invention firstly provides a kind of cement products repair with high-strength cracking resistance repairing powder, raw material by weight,
Including following component: 300-400 parts of cement, 15-40 parts of silicon ash, 400-600 parts of building sand, 25-40 parts of swelling agent, hydroxypropyl
0.5-1.0 parts of methylcellulose, 0.5-1.0 parts of redispersable latex powder, 100-200 parts of powdered whiting, fiber 0.3-0.8
Part, 0.8-1.5 parts of water-reducing agent.
Preferably, the cement is ordinary portland cement of the strength grade not less than 52.5, portland cement, sulphur aluminic acid
One or more of salt cement or ferrous aluminate cement.
Preferably, the silicon ash SiO2Content is not less than 85%, and activity index is not less than 105% within 7 days.
Preferably, it is medium coarse sand between 2.3-3.5 that the building sand, which is fineness modulus, and clay content is not more than 1%, mud
Block content is 0, and chloride ion content is less than 0.01%.
Preferably, the swelling agent is calcium sulphoaluminate class swelling agent, calcium oxide-calcium sulphoaluminate class swelling agent or UEA expansion
One or more of agent.
The preferred UEA swelling agent of swelling agent, it is mainly a variety of expansions that it, which is with aluminum sulfate, aluminium oxide, aluminum aluminum sulfate etc.,
Source.Belong to calcium sulphoaluminate class cement expansive material, sodium salt, will not cause the alkali-aggregate reaction of concrete, and expansion character is steady
Fixed, intensity continuous rises.
Preferably, the viscosity of the hydroxypropyl methyl cellulose is ten thousand mpas of 15-20.
Preferably, the redispersable latex powder be vinyl acetate-tertiary carbon ethylene rouge-acrylic ester copolymer latex powder,
One or both of vinyl acetate-ethylene copolymerization latex powder or polyvinyl acetate-generating vinyl carboxylate-ethylene copolymer latex powder
More than.
Preferably, the partial size of the powdered whiting is 325 mesh, and whiteness is not less than 95%, and calcium carbonate content is not less than
98%.
Preferably, the fiber is one or more of carbon fiber, polypropylene fibre, glass fibre.
Preferably, the water-reducing agent is high performance water reducing agent of polyocarboxy acid pulvis.
The present invention also provides a kind of cement products repairing preparation methods of high-strength cracking resistance repairing powder, including walk as follows
It is rapid:
1. building sand, silicon ash, cement, swelling agent, powdered whiting are put into fine material mixer respectively, stirring 4-10 divides
Stop after clock;
2. weighing required hydroxypropyl methyl cellulose, redispersable latex powder, fiber, water-reducing agent respectively to be put into container
Mixing, and stir and evenly mix;
3. start fine material mixer, the mixed powder that investment step 2 obtains while stirring continues stirring 15-30 minutes
Stop stirring afterwards;
4. the powder after pair stirring carries out pack sealed storage.
The construction method of the high-strength cracking resistance repairing powder carries out as follows:
According to repairing purposes need and recommend the ratio of mud, furtherly, the product defect that need to be in the milk for gap class or its
The defect that it has higher requirements to repairing slurry fluidity, the recommendation ratio of mud are 0.35-0.45, are wanted to repairing pulp flow performance
Not high product defect is asked to repair, the recommendation ratio of mud is 0.25-0.35.The higher product defect of intensity requirement is repaired and recommends water
Gray scale is 0.25-0.30;
It weighs required mixing water and above-mentioned repairing powder is respectively put into stirring container, stirring evenly can make
With.
Beneficial effects of the present invention: the present invention is made using more scientific preparation method compared to traditional repairing powder
Cement products quality after repairing is more secure, specifically has the beneficial effect that:
(1) manner of formulation is concentrated using multiple material, is arbitrarily prepared using cement with water to substitute by field worker is single
Extensive mode, preparation method is more scientific, keeps cement products quality more secure;
(2) with the collocation mode for recommending the ratio of mud and different materials, different proportion, various cement can be met to a greater extent
Product requires the difference of patching material;
(3) cement products made is adjustable with patching material mobility, and easily construction, intensity height, adhesive property are good, repairing
Not easily to fall off afterwards, later period microdilatancy the problems such as shrinkage cracking can occur after handle, improve conventional repair material prepare with
A series of problems, such as meaning, quality does not ensure, intensity is low, easy to crack, sticky poor, easy to fall off, allows the final product quality after repairing to obtain
It preferably ensures, while also having ensured the total quality of cement products engineering.
(4) intensity rises fast, and under the conditions of room temperature natural curing, repairing can meet or exceed conventional repair material 28 in 3 days
It intensity, substantially reduce cement products goes out ETCD estimated time of commencing discharging.
Specific embodiment
For a better understanding of the technical solution of the present invention, below will be by specific embodiment to technology of the invention
Scheme is described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to technical scheme
Detailed description, rather than the restriction to technical scheme, in the absence of conflict, the embodiment of the present application and reality
The technical characteristic applied in example can be combined with each other.
Embodiment 1
By weight, weighing strength grade is 300 parts of ordinary portland cement of 52.5,15 parts of silicon ash, natural sand 555
Part, 30 parts of swelling agent, 0.8 part of hydroxypropyl methyl cellulose, 1.0 parts of redispersable latex powder, 100 parts of powdered whiting, poly- third
0.5 part of alkene fiber, 1.0 parts of water-reducing agent.
The natural sand refers to medium coarse sand of the fineness modulus between 2.3-3.5, and clay content is not more than 1%, and clod content is
0, chloride ion content is less than 0.01%.
It is specific the preparation method is as follows:
(1) natural sand, silicon ash, cement, swelling agent, powdered whiting are put into fine material mixer respectively, stirred 10 minutes
After stop;
(2) required hydroxypropyl methyl cellulose, redispersable latex powder, polypropylene fibre, water-reducing agent is weighed respectively to put
Enter hand operated mixing 3 minutes in container;
(3) start blender, while stirring from feeding port put into hand operated mixing after mixed powder, continue 20 points of stirring
Stop stirring after clock;
(4) pack sealed storage is carried out to the powder after stirring.
Concrete construction method carries out as follows:
(1) according to 0.40 ratio of mud, 5 kilograms of prepared powder is weighed, weighs 2 kilograms of corresponding mixing water, respectively
Mixing water after weighing and powder are placed in 30 liters of capacity concretes hand operated mixing 2 minutes, made repairing slurry fluidity compared with
It is good;
(2) the repairing slurry mixed and stirred is taken to pour into prefabricated case beam of the honeycomb area up to 0.8 square meter, natural curing 28
It, range estimation repairing position is tightly combined with box beam main body, without falling off, is not cracked.
Embodiment 2
By weight, weighing strength grade is 400 parts of ordinary portland cement of 52.5,24 parts of silicon ash, natural sand 435
Part, 40 parts of swelling agent, 0.8 part of hydroxypropyl methyl cellulose, 1.0 parts of redispersable latex powder, 100 parts of powdered whiting, poly- third
0.8 part of alkene fiber, 1.0 parts of water-reducing agent.
It is specific the preparation method is as follows:
(1) natural sand, silicon ash, cement, swelling agent, powdered whiting are put into fine material mixer respectively, stirred 10 minutes
After stop;
(2) required hydroxypropyl methyl cellulose, redispersable latex powder, polypropylene fibre, water-reducing agent is weighed respectively to put
Enter hand operated mixing 3 minutes in container;
(3) start blender, while stirring from feeding port put into hand operated mixing after mixed powder, continue 20 points of stirring
Stop stirring after clock;
(4) pack sealed storage is carried out to the powder after stirring.
Concrete construction method carries out as follows:
(1) according to 0.25 ratio of mud, 5 kilograms of prepared powder is weighed, weighs 1.25 kilograms of corresponding mixing water, point
The mixing water after weighing and powder are not placed in 30 liters of capacity concretes hand operated mixing 2 minutes, made repairing slurry fluidity
Generally, can be used for the cement products to mobility without too big requirement to repair;
(2) the repairing slurry mixed and stirred is taken to repair prefabricated lining of one piece of damaged area up to 0.1 square meter, natural curing 28
It, range estimation repairing position is tightly combined with wallboard main body, without falling off, is not cracked.
Embodiment 3
By weight, weighing strength grade is 400 parts of repaid hardening sulphoaluminate cement of 62.5,25 parts of silicon ash, natural sand
445 parts, 30 parts of swelling agent, 0.5 part of hydroxypropyl methyl cellulose, 1.0 parts of redispersable latex powder, 100 parts of powdered whiting, gather
0.8 part of tacryl, 1.0 parts of water-reducing agent.
It is specific the preparation method is as follows:
(1) natural sand, silicon ash, cement, swelling agent, powdered whiting are put into fine material mixer respectively, stirred 10 minutes
After stop;
(2) required hydroxypropyl methyl cellulose, redispersable latex powder, polypropylene fibre, water-reducing agent is weighed respectively to put
Enter hand operated mixing 3 minutes in container;
(3) start blender, while stirring from feeding port put into hand operated mixing after mixed powder, continue 20 points of stirring
Stop stirring after clock;
(4) pack sealed storage is carried out to the powder after stirring.
Concrete construction method carries out as follows:
(1) according to 0.25 ratio of mud, 5 kilograms of prepared powder is weighed, weighs 1.25 kilograms of corresponding mixing water, point
The mixing water after weighing and powder are not placed in 30 liters of capacity concretes hand operated mixing 2 minutes, made repairing slurry fluidity
Generally, can be used for the cement products to mobility without too big requirement to repair;
(2) it takes the repairing slurry mixed and stirred repairing is a piece of to knock the serious flush system ecology frame of damage, natural curing 28 days, estimates
Repairing position is tightly combined with wallboard main body, without falling off, is not cracked.
Embodiment 4
By weight, weighing strength grade is 400 parts of portland cement of 52.5,30 parts of silicon ash, 470 parts of natural sand,
30 parts of swelling agent, 0.5 part of hydroxypropyl methyl cellulose, 0.8 part of redispersable latex powder, 100 parts of powdered whiting, polypropylene is fine
0.5 part, 1.2 parts of water-reducing agent of dimension.
It is specific the preparation method is as follows:
(1) natural sand, silicon ash, cement, swelling agent, powdered whiting are put into fine material mixer respectively, stirred 10 minutes
After stop;
(2) required hydroxypropyl methyl cellulose, redispersable latex powder, fiber, water-reducing agent are weighed respectively be put into container
Interior hand operated mixing 3 minutes;
(3) start blender, while stirring from feeding port put into hand operated mixing after mixed powder, continue 30 points of stirring
Stop stirring after clock;
(4) pack sealed storage is carried out to the powder after stirring.
Concrete construction method carries out as follows:
(1) according to 0.25 ratio of mud, 20 kilograms of powder are weighed, 5 kilograms of corresponding mixing water is weighed, after weighing respectively
Mixing water and powder be placed in stirring 2 minutes in 60 liters of small-sized mortar mixers, made repairing slurry viscosity is preferable;
(2) the repairing slurry mixed and stirred is taken to do having a size of 70mm*70mm*70mm mortar specimen, standard curing is surveyed after 28 days
Obtaining test specimen compression strength is 82MPa.
Embodiment 5
By weight, weighing strength grade is 400 parts of ferrous aluminate cement of 62.5,30 parts of silicon ash, natural sand 470
Part, 30 parts of swelling agent, 0.5 part of hydroxypropyl methyl cellulose, 0.8 part of redispersable latex powder, 100 parts of powdered whiting, poly- third
0.5 part of alkene fiber, 1.2 parts of water-reducing agent.
It is specific the preparation method is as follows:
(1) natural sand, silicon ash, cement, swelling agent, powdered whiting are put into fine material mixer respectively, stirred 10 minutes
After stop;
(2) required hydroxypropyl methyl cellulose, redispersable latex powder, fiber, water-reducing agent are weighed respectively be put into container
Interior hand operated mixing 3 minutes;
(3) start blender, while stirring from feeding port put into hand operated mixing after mixed powder, continue 30 points of stirring
Stop stirring after clock;
(4) pack sealed storage is carried out to the powder after stirring.
Concrete construction method carries out as follows:
(1) according to 0.25 ratio of mud, 20 kilograms of powder are weighed, 5 kilograms of corresponding mixing water is weighed, after weighing respectively
Mixing water and powder be placed in stirring 2 minutes in 60 liters of small-sized mortar mixers, made repairing slurry viscosity is preferable;
(2) the repairing slurry mixed and stirred is taken to do having a size of 70mm*70mm*70mm mortar specimen, standard curing is surveyed after 28 days
Obtaining test specimen compression strength is 88MPa.
Embodiment 6
By weight, weighing strength grade is 400 parts of sulphate aluminium cement of 72.5,30 parts of silicon ash, natural sand 470
Part, 30 parts of swelling agent, 0.5 part of hydroxypropyl methyl cellulose, 0.8 part of redispersable latex powder, 100 parts of powdered whiting, poly- third
0.5 part of alkene fiber, 1.2 parts of water-reducing agent.
It is specific the preparation method is as follows:
(1) natural sand, silicon ash, cement, swelling agent, powdered whiting are put into fine material mixer respectively, stirred 10 minutes
After stop;
(2) required hydroxypropyl methyl cellulose, redispersable latex powder, fiber, water-reducing agent are weighed respectively be put into container
Interior hand operated mixing 3 minutes;
(3) start blender, while stirring from feeding port put into hand operated mixing after mixed powder, continue 30 points of stirring
Stop stirring after clock;
(4) pack sealed storage is carried out to the powder after stirring.
Concrete construction method carries out as follows:
(1) according to 0.25 ratio of mud, 20 kilograms of powder are weighed, 5 kilograms of corresponding mixing water is weighed, after weighing respectively
Mixing water and powder be placed in stirring 2 minutes in 60 liters of small-sized mortar mixers, made repairing slurry viscosity is preferable;
(2) the repairing slurry mixed and stirred is taken to do having a size of 70mm*70mm*70mm mortar specimen, standard curing is surveyed after 28 days
Obtaining test specimen compression strength is 92MPa.
Although specific embodiments of the present invention have been described above, those familiar with the art should be managed
Solution, we are merely exemplary described specific embodiment, rather than for the restriction to the scope of the present invention, it is familiar with this
The technical staff in field should be covered of the invention according to modification and variation equivalent made by spirit of the invention
In scope of the claimed protection.
Claims (11)
1. a kind of cement products repairing high-strength cracking resistance repairing powder, it is characterised in that: raw material by weight, including with the following group
Part: 300-400 parts of cement, 15-40 parts of silicon ash, 400-600 parts of building sand, 25-40 parts of swelling agent, hydroxypropyl methyl cellulose
0.5-1.0 parts, 0.5-1.0 parts of redispersable latex powder, 100-200 parts of powdered whiting, 0.3-0.8 parts of fiber, water-reducing agent
0.8-1.5 parts.
2. a kind of cement products repairing according to claim 1 repairs powder with high-strength cracking resistance, which is characterized in that the water
Mud is in ordinary portland cement of the strength grade not less than 52.5, portland cement, sulphate aluminium cement, ferrous aluminate cement
One or more.
3. a kind of cement products repairing according to claim 1 repairs powder with high-strength cracking resistance, which is characterized in that the silicon
SiO in ash2Content is not less than 85%, and activity index is not less than 105% within 7 days.
4. a kind of cement products repairing according to claim 1 repairs powder with high-strength cracking resistance, which is characterized in that described to build
Building with sand is medium coarse sand that fineness modulus is 2.3-3.5, and clay content is not more than 1%, and clod content is 0, and chloride ion content is less than
0.01%.
5. a kind of cement products repairing according to claim 1 repairs powder with high-strength cracking resistance, which is characterized in that described swollen
Swollen dose is one or more of calcium sulphoaluminate class swelling agent, calcium oxide-calcium sulphoaluminate class swelling agent, UEA swelling agent.
6. a kind of cement products repairing according to claim 1 repairs powder with high-strength cracking resistance, which is characterized in that described
The viscosity of hydroxypropyl methyl cellulose is 150000-200000mpas.
7. a kind of cement products repairing according to claim 1 high-strength cracking resistance repairing powder, which is characterized in that it is described can
Redisperse latex powder is vinyl acetate-tertiary carbon ethylene rouge-acrylic ester copolymer latex powder, vinyl acetate-ethylene copolymerization latex
One or more of powder, polyvinyl acetate-generating vinyl carboxylate-ethylene copolymer latex powder.
8. a kind of cement products repairing according to claim 1 repairs powder with high-strength cracking resistance, which is characterized in that described heavy
The partial size of matter calcium carbonate is 325 mesh, and whiteness is not less than 95%, and calcium carbonate content is not less than 98%.
9. a kind of cement products repairing according to claim 1 repairs powder with high-strength cracking resistance, which is characterized in that the fibre
Dimension is one or more of carbon fiber, polypropylene fibre, glass fibre.
10. a kind of cement products repairing according to claim 1 repairs powder with high-strength cracking resistance, which is characterized in that described
Water-reducing agent is polycarboxylate water-reducer pulvis.
11. a kind of preparation side of the cement products repairing high-strength cracking resistance repairing powder as described in Arbitrary Term in claim 1-10
Method, which comprises the steps of:
(1) building sand, silicon ash, cement, swelling agent, powdered whiting are put into fine material mixer respectively, stirred 4-10 minutes
After stop;
(2) required hydroxypropyl methyl cellulose, redispersable latex powder, fiber, water-reducing agent is weighed respectively to be put into container and stir
Mix mixing;
(3) fine material mixer is started, the mixed powder that investment step (2) obtains while stirring, after continuing stirring 15-30 minutes
Stop stirring;
(4) pack sealed storage is carried out to the powder after step (3) stirring.
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Cited By (4)
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CN110723945A (en) * | 2019-11-21 | 2020-01-24 | 鞍钢建设集团有限公司 | Environment-friendly plastering for rush repair and preparation method thereof |
CN111018453A (en) * | 2019-12-02 | 2020-04-17 | 中国公路工程咨询集团有限公司 | Preparation method and application of composite modified cement repair material |
CN111908851A (en) * | 2020-08-19 | 2020-11-10 | 鞍钢建设集团有限公司 | Environment-friendly pressure grouting material for rush repair reinforced building and production and use method thereof |
CN114671661A (en) * | 2022-03-11 | 2022-06-28 | 中国电建集团贵阳勘测设计研究院有限公司 | Preparation method of underwater defect treatment material for fine fracture channel |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110723945A (en) * | 2019-11-21 | 2020-01-24 | 鞍钢建设集团有限公司 | Environment-friendly plastering for rush repair and preparation method thereof |
CN111018453A (en) * | 2019-12-02 | 2020-04-17 | 中国公路工程咨询集团有限公司 | Preparation method and application of composite modified cement repair material |
CN111908851A (en) * | 2020-08-19 | 2020-11-10 | 鞍钢建设集团有限公司 | Environment-friendly pressure grouting material for rush repair reinforced building and production and use method thereof |
CN114671661A (en) * | 2022-03-11 | 2022-06-28 | 中国电建集团贵阳勘测设计研究院有限公司 | Preparation method of underwater defect treatment material for fine fracture channel |
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Application publication date: 20190405 |