CN112876151A - Geopolymer-based rapid repair mortar and preparation method thereof - Google Patents
Geopolymer-based rapid repair mortar and preparation method thereof Download PDFInfo
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- CN112876151A CN112876151A CN202110242167.9A CN202110242167A CN112876151A CN 112876151 A CN112876151 A CN 112876151A CN 202110242167 A CN202110242167 A CN 202110242167A CN 112876151 A CN112876151 A CN 112876151A
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- stirrer
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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
- C04B28/006—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 mineral polymers, e.g. geopolymers of the Davidovits type
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/142—Steelmaking slags, converter slags
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/144—Slags from the production of specific metals other than iron or of specific alloys, e.g. ferrochrome slags
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses geopolymer-based rapid repair mortar which comprises ash powder and water, wherein the ash powder comprises the following raw materials: 40-45% of cementing material, 48-60% of machine-made sand, 0.1-0.15% of cellulose ether, 0.1-0.15% of sodium aluminate, 0.2-0.5% of water glass, 0.1-0.3% of sodium hydroxide and 0.12-0.2% of water reducing agent; the geopolymer-based rapid repair mortar prepared by the invention has the following advantages: (1) the early strength is high, and the hardening is fast; (2) the new and old concrete has good bonding force, and the local repairing effect is ensured; (3) the construction is quick, convenient and simple, and large-scale machine tools are not needed; (4) the maintenance time after construction is short; (5) the wear resistance is high, and the durability is good; (6) the shrinkage is small, and the later strength performance is stable; (7) the solid wastes such as nickel slag, steel slag, construction waste and the like are used as materials, so that the cost is low, and the environment is protected.
Description
Technical Field
The invention relates to the technical field of mortar preparation, in particular to geopolymer-based rapid repair mortar and a preparation method thereof.
Background
The mortar is a bonding substance used for building bricks on a building, and is formed by adding water into sand and cementing materials (cement, lime paste, clay and the like) according to a certain proportion, and is also called mortar and also used as mortar; the mortar is used for masonry and plastering engineering and can be divided into masonry mortar and plastering mortar, wherein the masonry mortar is used for masonry of bricks, stones, building blocks and the like and installation of members; the latter is used for plastering the surfaces of wall surfaces, ground surfaces, roof surfaces, beam-column structures and the like so as to meet the requirements of protection, decoration and the like.
The existing repair mortar is mainly prepared by using cement as a main cementing material and matching with fine aggregate to prepare cement mortar, and is used together with additives such as polymer emulsion and the like to repair concrete, pavements and the like.
The existing repair mortar mainly has the following defects: (1) the cement concrete has low tensile strength and poor combination with old concrete; (2) the interface between the old concrete and the new mortar is weak, so that the concrete is easy to crack; (3) the shrinkage is large, so that the old and new concrete are easy to pull apart; (4) the repairing and maintaining time is long; (5) the cost is high.
Disclosure of Invention
The invention aims to provide geopolymer-based rapid repair mortar and a preparation method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the geopolymer-based rapid repair mortar comprises ash powder and water, wherein the ash powder comprises the following raw materials: 40-45% of cementing material, 48-60% of machine-made sand, 0.1-0.15% of cellulose ether, 0.1-0.15% of sodium aluminate, 0.2-0.5% of water glass, 0.1-0.3% of sodium hydroxide and 0.12-0.2% of water reducing agent.
Wherein the water-cement ratio of the geopolymer-based rapid repair mortar is 0.35-04.
Wherein the mass ratio of the cementing material to the machine-made sand is 1:1.2-1: 1.5.
The cementing material is prepared by mixing fly ash, mineral powder and steel slag powder in parts by weight: 40-50 parts of fly ash, 30-40 parts of mineral powder and 10-30 parts of steel slag powder.
Wherein the particle diameters of the cementing materials are all 400-600 meshes.
The machine-made sand is prepared from nickel sand and construction waste, and the fineness modulus of the machine-made sand is 0.7-1.3.
Wherein the cellulose ether has a molecular weight of 10 ten thousand.
Wherein the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent.
A preparation method of geopolymer-based rapid repair mortar comprises the following steps:
s1, weighing the cementing material and the machine-made sand respectively according to the parts by weight, adding the weighed cementing material and the machine-made sand into a stirrer, stirring for 15-20 seconds by using the stirrer, and uniformly mixing the cementing material and the machine-made sand together by using the stirrer;
s2, weighing half of the total water amount according to the water-cement ratio, adding the weighed water into a stirrer, and stirring for 20-25 seconds by using the stirrer to uniformly mix the cementing material and the machine-made sand in the stirrer into the water;
s3, respectively weighing cellulose ether, sodium aluminate, sodium silicate, sodium hydroxide and a water reducing agent in parts by weight, sequentially adding the weighed cellulose ether, sodium aluminate, sodium silicate, sodium hydroxide and water reducing agent into a stirrer, and stirring for 25-30 seconds by using the stirrer to uniformly mix the raw materials in the stirrer together;
and S4, weighing the remaining half of the total water according to the water-cement ratio, adding the weighed water into the stirrer, and continuously stirring for 40 seconds by using the stirrer, so that the raw materials in the stirrer are uniformly mixed with the water, and the repair mortar is obtained.
Compared with the prior art, the invention has the beneficial effects that:
according to the geopolymer-based rapid repair mortar, the cementing material, the machine-made sand, the cellulose ether, the sodium aluminate, the water glass, the sodium hydroxide, the water reducing agent and the water are uniformly mixed together through a scientific and reasonable ratio to prepare the geopolymer-based rapid repair mortar, the preparation process is simple, the popularization and the use are easy, and the geopolymer-based rapid repair mortar has the following advantages: (1) the early strength is high, and the hardening is fast; (2) the new and old concrete has good bonding force, and the local repairing effect is ensured; (3) the construction is quick, convenient and simple, and large-scale machine tools are not needed; (4) the maintenance time after construction is short; (5) the wear resistance is high, and the durability is good; (6) the shrinkage is small, and the later strength performance is stable; (7) the solid wastes such as nickel slag, steel slag, construction waste and the like are used as materials, so that the cost is low, and the environment is protected.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
Embodiment 1, the present invention provides a technical solution: the geopolymer-based rapid repair mortar comprises ash powder and water, wherein the ash powder comprises the following raw materials: 42% of a cementing material, 57.14% of machine-made sand, 0.1% of cellulose ether, 0.1% of sodium aluminate, 0.3% of water glass, 0.2% of sodium hydroxide and 0.16% of a water reducing agent.
Wherein the water-cement ratio of the geopolymer-based rapid repair mortar is 0.36.
Wherein the mass ratio of the cementing material to the machine-made sand is 1: 1.36.
The cementing material is prepared by mixing fly ash, mineral powder and steel slag powder, wherein the fly ash, the mineral powder and the steel slag powder are respectively in parts by weight: 45 parts of fly ash, 32 parts of mineral powder and 18 parts of steel slag powder.
Wherein the particle size of the cementing material is 400-600 meshes.
Wherein the machine-made sand is prepared from nickel sand and construction waste, and the fineness modulus of the machine-made sand is 0.7-1.3.
Wherein the cellulose ether has a molecular weight of 10 ten thousand.
Wherein the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent.
A preparation method of geopolymer-based rapid repair mortar comprises the following steps:
s1, weighing the cementing material and the machine-made sand respectively according to the parts by weight, adding the weighed cementing material and the machine-made sand into a stirrer, stirring for 15-20 seconds by using the stirrer, and uniformly mixing the cementing material and the machine-made sand together by using the stirrer;
s2, weighing half of the total water amount according to the water-cement ratio, adding the weighed water into a stirrer, and stirring for 20-25 seconds by using the stirrer to uniformly mix the cementing material and the machine-made sand in the stirrer into the water;
s3, respectively weighing cellulose ether, sodium aluminate, sodium silicate, sodium hydroxide and a water reducing agent in parts by weight, sequentially adding the weighed cellulose ether, sodium aluminate, sodium silicate, sodium hydroxide and water reducing agent into a stirrer, and stirring for 25-30 seconds by using the stirrer to uniformly mix the raw materials in the stirrer together;
and S4, weighing the remaining half of the total water according to the water-cement ratio, adding the weighed water into the stirrer, and continuously stirring for 40 seconds by using the stirrer, so that the raw materials in the stirrer are uniformly mixed with the water, and the repair mortar is obtained.
Embodiment 2, the present invention provides a technical solution: the geopolymer-based rapid repair mortar comprises ash powder and water, wherein the ash powder comprises the following raw materials: 43% of cementing material, 56% of machine-made sand, 0.14% of cellulose ether, 0.13% of sodium aluminate, 0.37% of water glass, 0.22% of sodium hydroxide and 0.14% of water reducing agent.
Wherein the water-cement ratio of the geopolymer-based rapid repair mortar is 0.38.
Wherein the mass ratio of the cementing material to the machine-made sand is 1: 1.3.
The cementing material is prepared by mixing fly ash, mineral powder and steel slag powder, wherein the fly ash, the mineral powder and the steel slag powder are respectively in parts by weight: 46 parts of fly ash, 37 parts of mineral powder and 25 parts of steel slag powder.
Wherein the particle size of the cementing material is 400-600 meshes.
Wherein the machine-made sand is prepared from nickel sand and construction waste, and the fineness modulus of the machine-made sand is 0.7-1.3.
Wherein the cellulose ether has a molecular weight of 10 ten thousand.
Wherein the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent.
The preparation method of the geopolymer-based rapid repair mortar is basically the same as that of the geopolymer-based rapid repair mortar in the embodiment 1, and the difference is only that the mixture ratio of the components is different.
Embodiment 3, the present invention provides a technical solution: the geopolymer-based rapid repair mortar comprises ash powder and water, wherein the ash powder comprises the following raw materials: 41% of a cementing material, 58% of machine-made sand, 0.13% of cellulose ether, 0.12% of sodium aluminate, 0.34% of water glass, 0.25% of sodium hydroxide and 0.16% of a water reducing agent.
Wherein the water-cement ratio of the geopolymer-based rapid repair mortar is 0.38.
Wherein the mass ratio of the cementing material to the machine-made sand is 1: 1.41.
The cementing material is prepared by mixing fly ash, mineral powder and steel slag powder, wherein the fly ash, the mineral powder and the steel slag powder are respectively in parts by weight: 48 parts of fly ash, 38 parts of mineral powder and 28 parts of steel slag powder.
Wherein the particle size of the cementing material is 400-600 meshes.
Wherein the machine-made sand is prepared from nickel sand and construction waste, and the fineness modulus of the machine-made sand is 0.7-1.3.
Wherein the cellulose ether has a molecular weight of 10 ten thousand.
Wherein the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent.
The preparation method of the geopolymer-based rapid repair mortar is basically the same as that of the geopolymer-based rapid repair mortar in the embodiment 1, and the difference is only that the mixture ratio of the components is different.
In conclusion, by the scientific and reasonable proportion, the cementing material, the machine-made sand, the cellulose ether, the sodium aluminate, the water glass, the sodium hydroxide, the water reducing agent and the water are uniformly mixed together to prepare the geopolymer-based rapid repair mortar, the preparation process is simple, the popularization and the use are easy, and the geopolymer-based rapid repair mortar has the following advantages: (1) the early strength is high, and the hardening is fast; (2) the new and old concrete has good bonding force, and the local repairing effect is ensured; (3) the construction is quick, convenient and simple, and large-scale machine tools are not needed; (4) the maintenance time after construction is short; (5) the wear resistance is high, and the durability is good; (6) the shrinkage is small, and the later strength performance is stable; (7) the solid wastes such as nickel slag, steel slag, construction waste and the like are used as materials, so that the cost is low, and the environment is protected.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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 (9)
1. The geopolymer-based rapid repair mortar is characterized by comprising ash powder and water, wherein the ash powder comprises the following raw materials: 40-45% of cementing material, 48-60% of machine-made sand, 0.1-0.15% of cellulose ether, 0.1-0.15% of sodium aluminate, 0.2-0.5% of water glass, 0.1-0.3% of sodium hydroxide and 0.12-0.2% of water reducing agent.
2. The geopolymer-based rapid repair mortar of claim 1, wherein: the water-cement ratio of the geopolymer-based rapid repair mortar is 0.35-04.
3. The geopolymer-based rapid repair mortar of claim 1, wherein: the mass ratio of the cementing material to the machine-made sand is 1:1.2-1: 1.5.
4. The geopolymer-based rapid repair mortar of claim 1, wherein: the cementing material is prepared by mixing fly ash, mineral powder and steel slag powder, wherein the fly ash, the mineral powder and the steel slag powder are respectively in parts by weight: 40-50 parts of fly ash, 30-40 parts of mineral powder and 10-30 parts of steel slag powder.
5. The geopolymer-based rapid repair mortar of claim 1, wherein: the particle size of the cementing material is 400-600 meshes.
6. The geopolymer-based rapid repair mortar of claim 1, wherein: the machine-made sand is prepared from nickel sand and construction waste, and the fineness modulus of the machine-made sand is 0.7-1.3.
7. The geopolymer-based rapid repair mortar of claim 1, wherein: the cellulose ether has a molecular weight of 10 ten thousand.
8. The geopolymer-based rapid repair mortar of claim 1, wherein: the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent.
9. The method for preparing the geopolymer-based rapid repair mortar according to any one of claims 1 to 8, wherein the method comprises the following steps:
s1, weighing the cementing material and the machine-made sand respectively according to the parts by weight, adding the weighed cementing material and the machine-made sand into a stirrer, stirring for 15-20 seconds by using the stirrer, and uniformly mixing the cementing material and the machine-made sand together by using the stirrer;
s2, weighing half of the total water amount according to the water-cement ratio, adding the weighed water into a stirrer, and stirring for 20-25 seconds by using the stirrer to uniformly mix the cementing material and the machine-made sand in the stirrer into the water;
s3, respectively weighing cellulose ether, sodium aluminate, sodium silicate, sodium hydroxide and a water reducing agent in parts by weight, sequentially adding the weighed cellulose ether, sodium aluminate, sodium silicate, sodium hydroxide and water reducing agent into a stirrer, and stirring for 25-30 seconds by using the stirrer to uniformly mix the raw materials in the stirrer together;
and S4, weighing the remaining half of the total water according to the water-cement ratio, adding the weighed water into the stirrer, and continuously stirring for 40 seconds by using the stirrer, so that the raw materials in the stirrer are uniformly mixed with the water, and the repair mortar is obtained.
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| CN202110242167.9A CN112876151A (en) | 2021-03-04 | 2021-03-04 | Geopolymer-based rapid repair mortar and preparation method thereof |
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| CN202110242167.9A CN112876151A (en) | 2021-03-04 | 2021-03-04 | Geopolymer-based rapid repair mortar and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116444228A (en) * | 2023-04-07 | 2023-07-18 | 广西大学 | Bagasse ash-metakaolin-based geopolymer repair mortar and preparation method thereof |
| CN117567176A (en) * | 2023-12-04 | 2024-02-20 | 水利部交通运输部国家能源局南京水利科学研究院 | Hydraulic concrete low-temperature melting wear-resistant repair protective layer and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116444228A (en) * | 2023-04-07 | 2023-07-18 | 广西大学 | Bagasse ash-metakaolin-based geopolymer repair mortar and preparation method thereof |
| CN117567176A (en) * | 2023-12-04 | 2024-02-20 | 水利部交通运输部国家能源局南京水利科学研究院 | Hydraulic concrete low-temperature melting wear-resistant repair protective layer and construction method thereof |
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