CN113582633A - High-ductility quick-setting and quick-hardening concrete repair material - Google Patents
High-ductility quick-setting and quick-hardening concrete repair material Download PDFInfo
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- CN113582633A CN113582633A CN202110697194.5A CN202110697194A CN113582633A CN 113582633 A CN113582633 A CN 113582633A CN 202110697194 A CN202110697194 A CN 202110697194A CN 113582633 A CN113582633 A CN 113582633A
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- parts
- quick
- ductility
- reducing agent
- water reducing
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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
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- 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
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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 invention relates to the technical field of building materials, and discloses a high-ductility, quick-setting and quick-hardening concrete repairing material which comprises the following raw materials in parts by weight: 30-80 parts of fly ash, 90-140 parts of quartz sand and 70-120 parts of water. According to the high-ductility quick-setting and quick-hardening concrete repair material, silicate cement, aluminate cement and dihydrate gypsum are added, a large amount of ettringite and hydrated calcium aluminate can be generated in the early stage of water melting, so that high early strength can be obtained, the ettringite contains a large amount of crystal water, and has certain expansion performance for a system, so that the high-ductility quick-setting and quick-hardening concrete repair material can be well bonded with basic concrete, and the purpose of good bonding performance is realized.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a high-ductility, quick-setting and quick-hardening concrete repairing material.
Background
Structural failure or building function failure caused by various reasons in the world at present not only affects the normal life of people, but also causes huge economic loss, wherein the conditions of cracks, falling off, leakage and the like of cement concrete structures are the most common concrete product maintenance problems, and more concrete repair materials are developed and put on the market, mainly inorganic and organic repair materials, wherein epoxy resin series repair materials or (methyl) acrylic acid series repair materials in the organic concrete repair materials account for the majority.
Although these concrete repair materials have excellent adhesion to dry concrete, they have problems that they cannot achieve desired adhesion when wetted with rain or used in a humid environment such as a sewer, and that they have poor mortar compactness and ion erosion resistance, which affect the durability of a building.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a high-ductility quick-setting and quick-hardening concrete repair material which has the advantages of better adhesion, good compactness and ion corrosion resistance of mortar and the like, and solves the problems that the required adhesion cannot be obtained, the compactness and the ion corrosion resistance of the mortar are poor and the durability of a building is influenced under the condition of being wetted by rain or being used in a multi-wet environment such as a sewer and the like.
(II) technical scheme
In order to achieve the purposes of good adhesion and good compactness and ion corrosion resistance of the mortar, the invention provides the following technical scheme: a high-ductility quick-setting and quick-hardening concrete repair material comprises the following raw materials in parts by weight: 30-80 parts of fly ash, 90-140 parts of quartz sand, 70-120 parts of water, 1.6-2.4 parts of water reducing agent, 20-80 parts of Portland cement, 5-20 parts of aluminate cement, 5-25 parts of dihydrate gypsum, 20-80 parts of mineral powder and the like.
Preferably, the fly ash is class I or class II class F fly ash, and the particle size of the quartz sand is not more than 0.4 mm.
Preferably, the water reducing agent is a naphthalene water reducing agent, a sulfamate water reducing agent or a polycarboxylic acid water reducing agent, and the water reducing rate is 15-35%.
Preferably, 30 parts of fly ash, 90 parts of quartz sand, 70 parts of water, 1.6 parts of a water reducing agent, 20 parts of portland cement, 5 parts of aluminate cement, 5 parts of dihydrate gypsum, 20 parts of mineral powder and the like.
Preferably, 80 parts of fly ash, 140 parts of quartz sand, 120 parts of water, 2.4 parts of a water reducing agent, 80 parts of portland cement, 20 parts of aluminate cement, 25 parts of dihydrate gypsum, 80 parts of mineral powder and the like.
The invention also provides a preparation method of the high-ductility quick-setting and quick-hardening concrete repair material, which comprises the following steps:
(1) weighing fly ash, quartz sand, silicate cement, aluminate cement and water, and stirring and mixing uniformly;
(2) weighing the water reducing agent, the dihydrate gypsum and the mineral powder, adding the weighed water reducing agent, the dihydrate gypsum and the mineral powder into the mixed cement, and uniformly stirring and mixing to obtain the concrete repair material.
(III) advantageous effects
Compared with the prior art, the invention provides a high-ductility quick-setting and quick-hardening concrete repair material, which has the following beneficial effects:
1. according to the high-ductility quick-setting and quick-hardening concrete repair material, silicate cement, aluminate cement and dihydrate gypsum are added, a large amount of ettringite and hydrated calcium aluminate can be generated in the early stage of water melting, so that high early strength can be obtained, and the ettringite contains a large amount of crystal water, has a certain expansion performance for a system, can form good bonding with basic concrete, and achieves the purpose of good bonding property.
2. According to the high-ductility quick-setting and quick-hardening concrete repair material, a certain amount of mineral powder is added, so that a pore structure can be refined, and the mineral powder can react with substances such as calcium hydroxide and the like to generate calcium silicate hydrate gel (volcanic ash effect), so that the compactness and the ion erosion resistance of mortar are further improved, and the purpose of good compactness and ion erosion resistance of mortar is realized.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: 30 parts of fly ash, 90 parts of quartz sand, 70 parts of water, 1.6 parts of a water reducing agent, 20 parts of portland cement, 5 parts of aluminate cement, 5 parts of dihydrate gypsum, 20 parts of mineral powder and the like, wherein the fly ash is class I or class II F fly ash, the particle size of the quartz sand is not more than 0.4mm, the water reducing agent is a naphthalene water reducing agent, an sulfamate water reducing agent or a polycarboxylic acid water reducing agent, and the water reducing rate is 15%.
A preparation method of a high-ductility quick-setting and quick-hardening concrete repair material comprises the following steps:
(1) weighing fly ash, quartz sand, silicate cement, aluminate cement and water, and stirring and mixing uniformly;
(2) weighing the water reducing agent, the dihydrate gypsum and the mineral powder, adding the weighed water reducing agent, the dihydrate gypsum and the mineral powder into the mixed cement, and uniformly stirring and mixing to obtain the concrete repair material.
The high-ductility quick-setting and quick-hardening concrete repair material prepared according to the proportion has the advantages of good adhesion, good compactness of mortar and good ion corrosion resistance, can still ensure the required adhesion even under the condition of being wetted by rain or being used in a sewage and other humid environments, and ensures lower cost and better control cost under the condition of less formula parts.
Example two: 80 parts of fly ash, 140 parts of quartz sand, 120 parts of water, 2.4 parts of a water reducing agent, 80 parts of portland cement, 20 parts of aluminate cement, 25 parts of dihydrate gypsum, 80 parts of mineral powder and the like, wherein the fly ash is class I or class II F fly ash, the particle size of the quartz sand is not more than 0.4mm, the water reducing agent is a naphthalene water reducing agent, an sulfamate water reducing agent or a polycarboxylic acid water reducing agent, and the water reducing rate is 35%.
A preparation method of a high-ductility quick-setting and quick-hardening concrete repair material comprises the following steps:
(1) weighing fly ash, quartz sand, silicate cement, aluminate cement and water, and stirring and mixing uniformly;
(2) weighing the water reducing agent, the dihydrate gypsum and the mineral powder, adding the weighed water reducing agent, the dihydrate gypsum and the mineral powder into the mixed cement, and uniformly stirring and mixing to obtain the concrete repair material.
The high-ductility quick-setting and quick-hardening concrete repair material prepared according to the proportion has the advantages of good adhesion, and good compactness and ion corrosion resistance of mortar, and can still ensure the required adhesion even under the condition of being wetted by rain or being used in a sewage and other humid environments.
Example three: 55 parts of fly ash, 115 parts of quartz sand, 95 parts of water, 2 parts of a water reducing agent, 50 parts of portland cement, 12.5 parts of aluminate cement, 15 parts of dihydrate gypsum, 12.5 parts of mineral powder and the like, wherein the fly ash is class I or class II class F fly ash, the particle size of the quartz sand is not more than 0.4mm, the water reducing agent is a naphthalene water reducing agent, a sulfamate water reducing agent or a polycarboxylic acid water reducing agent, and the water reducing rate is 25%.
A preparation method of a high-ductility quick-setting and quick-hardening concrete repair material comprises the following steps:
(1) weighing fly ash, quartz sand, silicate cement, aluminate cement and water, and stirring and mixing uniformly;
(2) weighing the water reducing agent, the dihydrate gypsum and the mineral powder, adding the weighed water reducing agent, the dihydrate gypsum and the mineral powder into the mixed cement, and uniformly stirring and mixing to obtain the concrete repair material.
The high-ductility quick-setting and quick-hardening concrete repair material prepared according to the proportion has the advantages of good adhesion, good compactness of mortar and good ion corrosion resistance, has the adhesion of a high polymer material, has the durability of an inorganic material, is pressure-resistant, impervious and corrosion-resistant, is cured quickly, has strong adhesion, has good water retention performance and wear resistance and alkali resistance, and can still ensure the required adhesion even under the condition of being wetted by rain or being used in a sewer and other humid environments.
The invention has the beneficial effects that: according to the high-ductility quick-setting and quick-hardening concrete repair material, silicate cement, aluminate cement and dihydrate gypsum are added, a large amount of ettringite and hydrated calcium aluminate can be generated in the early stage of water melting, so that high early strength can be obtained, the ettringite contains a large amount of crystal water, and has certain expansion performance for a system, so that the high-ductility quick-setting and quick-hardening concrete repair material can be well bonded with basic concrete, and the purpose of good bonding performance is realized.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The high-ductility quick-setting and quick-hardening concrete repair material is characterized by comprising the following raw materials in parts by weight: 30-80 parts of fly ash, 90-140 parts of quartz sand, 70-120 parts of water, 1.6-2.4 parts of water reducing agent, 20-80 parts of Portland cement, 5-20 parts of aluminate cement, 5-25 parts of dihydrate gypsum, 20-80 parts of mineral powder and the like.
2. The high ductility, quick setting and quick hardening concrete repair material as claimed in claim 1, wherein said fly ash is class I or class II class F fly ash, and said silica sand has a particle size not exceeding 0.4 mm.
3. The high ductility, rapid setting and rapid hardening concrete patching material as claimed in claim 1, wherein the water reducing agent is a naphthalene water reducing agent, a sulfamate water reducing agent or a polycarboxylate water reducing agent, and the water reducing rate is 15% -35%.
4. The high-ductility quick-setting and quick-hardening concrete repair material as claimed in claim 1, which is characterized by comprising the following raw materials in parts by weight: 30 parts of fly ash, 90 parts of quartz sand, 70 parts of water, 1.6 parts of a water reducing agent, 20 parts of portland cement, 5 parts of aluminate cement, 5 parts of dihydrate gypsum, 20 parts of mineral powder and the like.
5. The high-ductility quick-setting and quick-hardening concrete repair material as claimed in claim 1, which is characterized by comprising the following raw materials in parts by weight: 80 parts of fly ash, 140 parts of quartz sand, 120 parts of water, 2.4 parts of a water reducing agent, 80 parts of portland cement, 20 parts of aluminate cement, 25 parts of dihydrate gypsum, 80 parts of mineral powder and the like.
6. The high-ductility quick-setting and quick-hardening concrete repair material as claimed in claim 1, which is characterized by comprising the following raw materials in parts by weight: 55 parts of fly ash, 115 parts of quartz sand, 95 parts of water, 2 parts of water reducing agent, 50 parts of portland cement, 12.5 parts of aluminate cement, 15 parts of dihydrate gypsum, 12.5 parts of mineral powder and the like.
7. A preparation method of a high-ductility quick-setting and quick-hardening concrete repair material is characterized by comprising the following steps:
(1) weighing fly ash, quartz sand, silicate cement, aluminate cement and water, and stirring and mixing uniformly;
(2) weighing the water reducing agent, the dihydrate gypsum and the mineral powder, adding the weighed water reducing agent, the dihydrate gypsum and the mineral powder into the mixed cement, and uniformly stirring and mixing to obtain the concrete repair material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110697194.5A CN113582633A (en) | 2021-06-23 | 2021-06-23 | High-ductility quick-setting and quick-hardening concrete repair material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110697194.5A CN113582633A (en) | 2021-06-23 | 2021-06-23 | High-ductility quick-setting and quick-hardening concrete repair material |
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| Publication Number | Publication Date |
|---|---|
| CN113582633A true CN113582633A (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110697194.5A Pending CN113582633A (en) | 2021-06-23 | 2021-06-23 | High-ductility quick-setting and quick-hardening concrete repair material |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3527981A1 (en) * | 1985-08-03 | 1987-02-12 | Sicowa Verfahrenstech | MIXTURE FOR THE PRODUCTION OF FASTER-CURING MORTAR FOR PLASTER AND REPAIR |
| CN104829170A (en) * | 2015-01-05 | 2015-08-12 | 潍坊德霖建材科技有限公司 | Preparation method of high-performance anti-corrosion repairing mortar |
| CN104860615A (en) * | 2015-03-27 | 2015-08-26 | 万华节能科技集团股份有限公司 | Mortar for concrete base surface repair, and preparation method thereof |
| CN106365524A (en) * | 2016-08-22 | 2017-02-01 | 河南省中德新亚新材料研究院有限公司 | Quick-setting early strength inorganic polymer mortar and production method thereof |
| CN107572992A (en) * | 2017-09-20 | 2018-01-12 | 西安建筑科技大学 | A kind of concrete repairing material for being applicable marine environment and preparation method thereof |
-
2021
- 2021-06-23 CN CN202110697194.5A patent/CN113582633A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3527981A1 (en) * | 1985-08-03 | 1987-02-12 | Sicowa Verfahrenstech | MIXTURE FOR THE PRODUCTION OF FASTER-CURING MORTAR FOR PLASTER AND REPAIR |
| CN104829170A (en) * | 2015-01-05 | 2015-08-12 | 潍坊德霖建材科技有限公司 | Preparation method of high-performance anti-corrosion repairing mortar |
| CN104860615A (en) * | 2015-03-27 | 2015-08-26 | 万华节能科技集团股份有限公司 | Mortar for concrete base surface repair, and preparation method thereof |
| CN106365524A (en) * | 2016-08-22 | 2017-02-01 | 河南省中德新亚新材料研究院有限公司 | Quick-setting early strength inorganic polymer mortar and production method thereof |
| CN107572992A (en) * | 2017-09-20 | 2018-01-12 | 西安建筑科技大学 | A kind of concrete repairing material for being applicable marine environment and preparation method thereof |
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Application publication date: 20211102 |