CN111848039A - Concrete mortar and preparation method thereof - Google Patents
Concrete mortar and preparation method thereof Download PDFInfo
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- CN111848039A CN111848039A CN202010714768.0A CN202010714768A CN111848039A CN 111848039 A CN111848039 A CN 111848039A CN 202010714768 A CN202010714768 A CN 202010714768A CN 111848039 A CN111848039 A CN 111848039A
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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
- C04B28/04—Portland cements
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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
- 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
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Abstract
The application relates to concrete mortar and a preparation method thereof, which relate to the field of concrete, and the concrete raw material comprises the following components in parts by weight: 220 parts of cement-180-. According to the concrete mortar prepared by the components and the preparation method, the porosity of the concrete can be effectively reduced.
Description
Technical Field
The application relates to the field of concrete, in particular to concrete mortar and a preparation method thereof.
Background
The concrete is a general name of a composite material which is prepared by a gel material, an aggregate and water according to a proper proportion and is hardened for a certain time; the concrete is one of the most important civil engineering materials in the present generation, and has the characteristics of rich raw materials, low price and simple production process; meanwhile, the concrete also has the characteristics of high compressive strength, good durability, wide strength grade range and the like.
In the process of mixing the concrete mortar, besides basic gel materials, aggregates and water, materials such as fly ash and air entraining agent are added to improve the workability, strength and the like of the concrete.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: during the mixing and thickening process of the gel material, a large number of holes are formed in the concrete mortar under the influence of the mixing action and the material, so that the porosity of the concrete is overlarge.
Disclosure of Invention
In order to reduce the porosity of the concrete mortar, the application provides the concrete mortar and a preparation method thereof.
In a first aspect, the present application provides a concrete mortar, which adopts the following technical scheme:
the concrete mortar comprises the following raw materials in parts by weight: 220 parts of cement-180-.
By adopting the technical scheme, cement is used as a gel material, and sand and stone are used as aggregates, so that the basic conditions for using concrete can be formed; the addition of the slag micro powder and the fly ash can improve the workability and the fluidity of concrete; meanwhile, bentonite is added in the concrete, and the gaps in the concrete can be filled by utilizing the water absorption and expansion characteristics of the bentonite; in the process of drying the concrete, after the bentonite is dehydrated, polyvinyl alcohol molecules can be embedded into the structure of the bentonite due to the fact that the polyvinyl alcohol has a large number of polar groups such as hydroxyl groups and the like, so that the structural vacancy generated after the bentonite is dehydrated can be filled, and holes in the concrete can be further reduced; meanwhile, borax is added, so that polyvinyl alcohol can be gelatinized, the filling strength of a bentonite vacancy structure is improved, and the bonding strength of concrete can also be improved; the isopropanol is used as a solvent with polar groups, so that the fluidity of the polyvinyl alcohol can be improved, the polyvinyl alcohol can be smoothly embedded into a bentonite structure, and the workability of concrete can be further improved by adding the lubricant; therefore, the porosity of the concrete can be effectively reduced.
Preferably, the raw materials comprise the following components in parts by weight: 200-210 parts of cement, 700-750 parts of sand, 1200-1250 parts of gravel, 60-65 parts of fly ash, 50-77 parts of slag micro powder, 168 parts of water 159, 4-4.9 parts of water reducing agent, 500-570 parts of bentonite, 356 parts of polyvinyl alcohol 310-containing material, 480 parts of isopropanol 412-containing material, 120 parts of borax 110-containing material and 20-26 parts of lubricant.
By adopting the technical scheme, the content ranges of all components in the concrete are further refined, so that all the components in the concrete can be better matched with each other, and the porosity of the concrete is better reduced.
Preferably, the raw materials comprise the following components in parts by weight: 207 parts of cement, 708 parts of sand, 1215 parts of broken stone, 62 parts of fly ash, 47 parts of slag micro powder, 160 parts of water, 4.7 parts of a water reducing agent, 566 parts of bentonite, 341 parts of polyvinyl alcohol, 456 parts of isopropanol, 116 parts of borax and 24 parts of a lubricating agent.
By adopting the technical scheme, the content of each component in the concrete is further refined, so that the mutual matching of each component in the concrete is optimal, and the porosity of the concrete can be further reduced.
Preferably, the lubricant comprises the following components in parts by weight: 14-29 parts of fatty alcohol-polyoxyethylene ether and 16-22 parts of polydimethylsiloxane.
By adopting the technical scheme, the fatty alcohol-polyoxyethylene ether is a nonionic surfactant, so that the surface tension of a concrete system can be effectively reduced, the workability of concrete is improved, the foaming of the concrete in the mixing process can be inhibited, and the porosity of the concrete is further reduced; the polydimethylsiloxane has excellent lubricating property, can effectively defoam, has good hydrophobic property and can improve the water resistance of concrete.
Preferably, the raw materials also comprise the following components in parts by weight: 190-310 parts of nano silica sol, 320 parts of carbon fiber and 20-60 parts of dispersing agent.
By adopting the technical scheme, the nano silica sol and the carbon fibers can be well dispersed in the isopropanol, so that the carbon fibers and the nano silica sol can be uniformly distributed at the hole positions of the concrete, and the carbon fibers can directly fill the holes of the concrete in the hardening process of the concrete; the nano silica sol can generate high-strength cross-linked high polymer, so that the bonding strength of the cured concrete is improved, and holes in the concrete can be filled; the dispersing agent is used for improving the dispersibility of each component in the concrete.
Preferably, the dispersant comprises the following components in parts by weight: 10-25 parts of ethanol and 19-33 parts of dimethyl carbonate.
By adopting the technical scheme, the ethanol and the dimethyl carbonate are excellent solvents, so that the nano silica sol, the polyvinyl alcohol and the like in the concrete can be uniformly dispersed in a concrete system; in the hardening process of the concrete, the ethanol can be evaporated, and the nano silica sol can be further promoted to generate a high-strength crosslinking high polymer.
Preferably, the raw materials also comprise the following components in parts by weight: 14-22 parts of Nippon SHO-BOND crack repair glue.
By adopting the technical scheme, the Japanese Schottky SHO-BOND crack repair glue is a molecular resin-based material, has low viscosity and strong permeability, can be used for further filling holes of concrete, and can be used for improving the strength of the concrete after being cured.
In a second aspect, the present application provides a method for preparing concrete mortar, which adopts the following technical scheme:
a preparation method of concrete mortar comprises the following steps:
the concrete mortar is prepared by dry-mixing cement, sand, broken stone, fly ash, slag micro powder, bentonite and polyvinyl alcohol for 2-3 minutes at the rotating speed of 60 revolutions per minute, then adding a water reducing agent and water, stirring for 1-2 minutes, then adding polyvinyl alcohol, isopropanol and a lubricant, stirring for 2-3 minutes, and finally adding borax, and stirring for 1-3 minutes.
By adopting the technical scheme, the concrete mortar can be conveniently obtained by fully mixing all components in the concrete; in the application, borax is added finally, so that the situation that the embedding of the polyvinyl alcohol into the bentonite is influenced due to the premature gelation of the polyvinyl alcohol is reduced.
Preferably, the method comprises the following steps:
the concrete mortar is prepared by dry-mixing cement, sand, broken stone, fly ash, slag micro powder, bentonite and polyvinyl alcohol for 2-3 minutes at the rotating speed of 60 revolutions per minute, then adding nano silica sol, carbon fiber and a dispersing agent, stirring for 1-2 minutes, then adding a water reducing agent and water, stirring for 1-2 minutes, then adding polyvinyl alcohol, isopropanol and a lubricating agent, stirring for 2-3 minutes, and finally adding borax, and stirring for 1-3 minutes.
By adopting the technical scheme, the concrete mortar can be conveniently obtained by fully mixing all components in the concrete; and the nano silica sol, the carbon fiber and the dispersing agent are added firstly, so that the dispersing effect of the concrete can be improved, and then the polyvinyl alcohol, the isopropanol and the lubricating agent are added, so that all the components can be fully mixed.
Preferably, the method comprises the following steps: dry-mixing cement, fly ash, slag micro powder, bentonite and polyvinyl alcohol for 2-3 minutes at a rotating speed of 60 revolutions per minute to obtain a first mixed material;
stirring sand, broken stone, nano silica sol, carbon fiber, a dispersing agent and Nippon SHO-BOND crack repair glue for 1-2 minutes at the rotating speed of 60 revolutions per minute to obtain a second mixed material;
and mixing the first mixed material and the second mixed material, adding a water reducing agent and water, stirring at the rotating speed of 60 revolutions per minute for 1-2 minutes, adding polyvinyl alcohol, isopropanol and a lubricating agent, stirring for 2-3 minutes, adding borax, and stirring for 1-3 minutes to obtain the concrete mortar.
By adopting the technical scheme, the sand, the broken stone, the nano silica sol, the carbon fiber, the dispersing agent and the Japanese Portland SHO-BOND crack repairing glue are independently mixed, so that the broken stone can be fully wrapped by the nano silica sol and the Japanese Portland SHO-BOND crack repairing glue, holes in the broken stone can be filled to a certain extent, and the porosity of the concrete is further reduced.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the concrete filling method, besides basic concrete components, bentonite is added, and gaps in the concrete can be filled by utilizing the water absorption and expansion characteristics of the bentonite; in the concrete drying process, after the bentonite is dehydrated, polyvinyl alcohol molecules can be embedded into the structure of the bentonite to fill the structural vacancy generated after the bentonite is dehydrated, so that the holes in the concrete are further reduced; meanwhile, borax is added, so that polyvinyl alcohol can be gelatinized, the filling strength of a bentonite vacancy structure is improved, and the bonding strength of concrete can also be improved; the isopropanol is used as a solvent with polar groups, so that the fluidity of the polyvinyl alcohol can be improved, the polyvinyl alcohol can be smoothly embedded into a bentonite structure, and the workability of concrete can be further improved by adding the lubricant; therefore, the porosity of the concrete can be effectively reduced;
2. the nano silica sol, the carbon fibers and the dispersing agent are added, and the nano silica sol and the carbon fibers can be well dispersed in the isopropanol, so that the carbon fibers and the nano silica sol can be uniformly distributed at the hole positions of the concrete, and the carbon fibers can directly fill the holes of the concrete in the hardening process of the concrete; the nano silica sol can generate high-strength cross-linked high polymer, so that the bonding strength of the cured concrete is improved, and holes in the concrete can be filled; the dispersing agent is used for improving the dispersibility of each component in the concrete.
Detailed Description
The present application will be described in further detail with reference to examples.
The first embodiment is as follows:
the concrete mortar comprises the following raw materials in parts by weight: 180 parts of cement, 600 parts of sand, 1100 parts of broken stone, 55 parts of fly ash, 50 parts of slag micro powder, 145 parts of water, 3 parts of water reducing agent, 420 parts of bentonite, 230 parts of polyvinyl alcohol, 360 parts of isopropanol, 100 parts of borax and 15 parts of lubricant.
Wherein:
the lubricant comprises the following components in parts by weight: 14 parts of fatty alcohol-polyoxyethylene ether and 18 parts of polydimethylsiloxane.
A preparation method of concrete mortar comprises the following steps:
the concrete mortar is prepared by dry-mixing cement, sand, broken stone, fly ash, slag micro powder, bentonite and polyvinyl alcohol for 2 minutes at the rotating speed of 60 revolutions per minute, then adding a water reducing agent and water, stirring for 1 minute, then adding polyvinyl alcohol, isopropanol and a lubricant, stirring for 2 minutes, and finally adding borax and stirring for 3 minutes.
Example two:
the concrete mortar comprises the following raw materials in parts by weight: 200 parts of cement, 700 parts of sand, 1200 parts of broken stone, 60 parts of fly ash, 50 parts of slag micro powder, 159 parts of water, 4 parts of water reducing agent, 500 parts of bentonite, 310 parts of polyvinyl alcohol, 412 parts of isopropanol, 110 parts of borax and 20 parts of lubricant.
Wherein:
the lubricant comprises the following components in parts by weight: 21 parts of fatty alcohol-polyoxyethylene ether and 16 parts of polydimethylsiloxane.
A preparation method of concrete mortar comprises the following steps:
the concrete mortar is prepared by dry-mixing cement, sand, broken stone, fly ash, slag micro powder, bentonite and polyvinyl alcohol for 3 minutes at the rotating speed of 60 revolutions per minute, then adding a water reducing agent and water, stirring for 1 minute, then adding polyvinyl alcohol, isopropanol and a lubricant, stirring for 3 minutes, and finally adding borax and stirring for 3 minutes.
Example three:
the concrete mortar comprises the following raw materials in parts by weight: 207 parts of cement, 708 parts of sand, 1215 parts of broken stone, 62 parts of fly ash, 47 parts of slag micro powder, 160 parts of water, 4.7 parts of a water reducing agent, 566 parts of bentonite, 341 parts of polyvinyl alcohol, 456 parts of isopropanol, 116 parts of borax and 24 parts of a lubricating agent.
Wherein:
the lubricant comprises the following components in parts by weight: 22 parts of fatty alcohol-polyoxyethylene ether and 19 parts of polydimethylsiloxane.
A preparation method of concrete mortar comprises the following steps:
the concrete mortar is prepared by dry-mixing cement, sand, broken stone, fly ash, slag micro powder, bentonite and polyvinyl alcohol for 3 minutes at the rotating speed of 60 revolutions per minute, then adding a water reducing agent and water, stirring for 2 minutes, then adding polyvinyl alcohol, isopropanol and a lubricant, stirring for 3 minutes, and finally adding borax and stirring for 3 minutes.
Example four:
the concrete mortar comprises the following raw materials in parts by weight: 210 parts of cement, 750 parts of sand, 1250 parts of broken stone, 65 parts of fly ash, 77 parts of slag micro powder, 168 parts of water, 4.9 parts of water reducing agent, 570 parts of bentonite, 356 parts of polyvinyl alcohol, 480 parts of isopropanol, 120 parts of borax and 26 parts of lubricant.
Wherein:
the lubricant comprises the following components in parts by weight: 29 parts of fatty alcohol-polyoxyethylene ether and 20 parts of polydimethylsiloxane.
A preparation method of concrete mortar comprises the following steps:
the concrete mortar is prepared by dry-mixing cement, sand, broken stone, fly ash, slag micro powder, bentonite and polyvinyl alcohol for 2 minutes at the rotating speed of 60 revolutions per minute, then adding a water reducing agent and water, stirring for 2 minutes, then adding polyvinyl alcohol, isopropanol and a lubricant, stirring for 2 minutes, and finally adding borax, and stirring for 1 minute.
Example five:
the concrete mortar comprises the following raw materials in parts by weight: 1220 parts of cement, 875 parts of sand, 1300 parts of broken stone, 75 parts of fly ash, 77 parts of slag micro powder, 169 parts of water, 5 parts of water reducing agent, 690 parts of bentonite, 410 parts of polyvinyl alcohol, 580 parts of isopropanol, 130 parts of borax and 36 parts of lubricant.
Wherein:
the lubricant comprises the following components in parts by weight: 28 parts of fatty alcohol-polyoxyethylene ether and 22 parts of polydimethylsiloxane.
A preparation method of concrete mortar comprises the following steps:
the concrete mortar is prepared by dry-mixing cement, sand, broken stone, fly ash, slag micro powder, bentonite and polyvinyl alcohol for 3 minutes at the rotating speed of 60 revolutions per minute, then adding a water reducing agent and water, stirring for 2 minutes, then adding polyvinyl alcohol, isopropanol and a lubricant, stirring for 3 minutes, and finally adding borax and stirring for 3 minutes.
Example six:
a concrete mortar is different from the first embodiment in that: the raw materials also comprise the following components in parts by weight: 190 parts of nano silica sol, 200 parts of carbon fiber and 20 parts of dispersing agent.
Wherein:
the dispersant comprises the following components in parts by weight: 10 parts of ethanol and 25 parts of dimethyl carbonate.
A preparation method of concrete mortar comprises the following steps:
the concrete mortar is prepared by dry-mixing cement, sand, broken stone, fly ash, slag micro powder, bentonite and polyvinyl alcohol for 3 minutes at the rotating speed of 60 revolutions per minute, then adding nano silica sol, carbon fiber and a dispersing agent, stirring for 2 minutes, then adding a water reducing agent and water, stirring for 2 minutes, then adding polyvinyl alcohol, isopropanol and a lubricating agent, stirring for 3 minutes, finally adding borax, and stirring for 3 minutes.
Example seven:
a concrete mortar is different from the first embodiment in that: the raw materials also comprise the following components in parts by weight: 250 parts of nano silica sol, 170 parts of carbon fiber and 35 parts of dispersing agent.
Wherein:
the dispersant comprises the following components in parts by weight: 18 parts of ethanol and 30 parts of dimethyl carbonate.
A preparation method of concrete mortar comprises the following steps:
the concrete mortar is prepared by dry-mixing cement, sand, broken stone, fly ash, slag micro powder, bentonite and polyvinyl alcohol for 3 minutes at the rotating speed of 60 revolutions per minute, then adding nano silica sol, carbon fiber and a dispersing agent, stirring for 1 minute, then adding a water reducing agent and water, stirring for 2 minutes, then adding polyvinyl alcohol, isopropanol and a lubricating agent, stirring for 2 minutes, finally adding borax, and stirring for 3 minutes.
Example eight:
a concrete mortar is different from the first embodiment in that: the raw materials also comprise the following components in parts by weight: 310 parts of nano silica sol, 320 parts of carbon fiber and 60 parts of dispersing agent.
Wherein:
the dispersant comprises the following components in parts by weight: 25 parts of ethanol and 33 parts of dimethyl carbonate.
A preparation method of concrete mortar comprises the following steps:
the concrete mortar is prepared by dry-mixing cement, sand, broken stone, fly ash, slag micro powder, bentonite and polyvinyl alcohol for 2 minutes at the rotating speed of 60 revolutions per minute, then adding nano silica sol, carbon fiber and a dispersing agent, stirring for 2 minutes, then adding a water reducing agent and water, stirring for 1 minute, then adding polyvinyl alcohol, isopropanol and a lubricating agent, stirring for 3 minutes, finally adding borax, and stirring for 1 minute.
Example nine:
a concrete mortar is different from the sixth embodiment in that: the raw materials also comprise the following components in parts by weight: 14 parts of Nippon SHO-BOND crack repair glue.
A preparation method of concrete mortar comprises the following steps:
mixing cement, fly ash, slag micro powder, bentonite and polyvinyl alcohol in a dry way for 2 minutes at a rotating speed of 60 revolutions per minute to obtain a first mixed material;
stirring sand, broken stone, nano silica sol, carbon fiber, a dispersing agent and Nippon SHO-BOND crack repair glue for 2 minutes at the rotating speed of 60 revolutions per minute to obtain a second mixed material;
and mixing the first mixed material and the second mixed material, adding a water reducing agent and water, stirring for 2 minutes at the rotating speed of 60 revolutions per minute, adding polyvinyl alcohol, isopropanol and a lubricating agent, stirring for 2 minutes, adding borax, and stirring for 1 minute to obtain the concrete mortar.
Example ten:
a concrete mortar is different from the sixth embodiment in that: the raw materials also comprise the following components in parts by weight: 19 parts of Nippon SHO-BOND crack repairing glue.
A preparation method of concrete mortar comprises the following steps:
dry-mixing cement, fly ash, slag micro powder, bentonite and polyvinyl alcohol for 3 minutes at a rotating speed of 60 revolutions per minute to obtain a first mixed material;
stirring sand, broken stone, nano silica sol, carbon fiber, a dispersing agent and Nippon SHO-BOND crack repair glue for 2 minutes at the rotating speed of 60 revolutions per minute to obtain a second mixed material;
and mixing the first mixed material and the second mixed material, adding a water reducing agent and water, stirring at the rotating speed of 60 revolutions per minute for 1 minute, adding polyvinyl alcohol, isopropanol and a lubricating agent, stirring for 2 minutes, adding borax, and stirring for 3 minutes to obtain the concrete mortar.
Example eleven:
a concrete mortar is different from the sixth embodiment in that: the raw materials also comprise the following components in parts by weight: and 22 parts of Japanese Banbang SHO-BOND crack repair glue.
A preparation method of concrete mortar comprises the following steps:
mixing cement, fly ash, slag micro powder, bentonite and polyvinyl alcohol in a dry way for 2 minutes at a rotating speed of 60 revolutions per minute to obtain a first mixed material;
stirring sand, broken stone, nano silica sol, carbon fiber, a dispersing agent and Nippon SHO-BOND crack repair glue for 2 minutes at the rotating speed of 60 revolutions per minute to obtain a second mixed material;
and mixing the first mixed material and the second mixed material, adding a water reducing agent and water, stirring at the rotating speed of 60 revolutions per minute for 1 minute, adding polyvinyl alcohol, isopropanol and a lubricating agent, stirring for 3 minutes, adding borax, and stirring for 1 minute to obtain the concrete mortar.
Comparative example one:
in contrast to example one, no polyvinyl alcohol was added.
Comparative example two:
compared with the first embodiment, no borax is added.
Comparative example three:
in contrast to example one, no isopropanol was added.
Comparative example four:
compared with the first embodiment, no lubricant is added.
Comparative example five:
in comparison with example one, the polyvinyl alcohol was replaced by an equal amount of isopropanol.
Comparative example six:
compared to example one, isopropanol was replaced with an equal amount of polyvinyl alcohol.
Comparative example seven:
compared with the sixth embodiment, no nano silica sol is added.
Comparative example eight:
in contrast to example six, no carbon fibers were added.
Comparative example nine:
no dispersant was added compared to example six.
Comparative example ten:
in contrast to example six, no ethanol was added to the dispersant.
Comparative example eleven:
compared to example six, no dimethyl carbonate was added to the dispersant.
Comparative example twelve:
the ethanol in the dispersant was replaced with an equal amount of ethylene glycol as compared to example six.
And (3) performance detection:
the concrete mortars prepared in examples one to eleventh and comparative examples one to twelfth were subjected to performance tests.
And (3) detecting porosity: preparing the mortar into a standard block, curing for 28 days, measuring the natural volume V1 of the standard block, grinding the standard block into powder, and measuring the volume V2 of the powder by a drainage method, wherein the porosity is (V1-V2)/V1.
And (3) manufacturing a standard test block according to GB/T50081-2002 standard of the test method for the mechanical properties of the common concrete, and measuring the compressive strength of the standard test block after 1d, 7d and 28d of maintenance.
And (3) testing the water penetration depth of the concrete mortar by a step-by-step pressurization method according to GB/T50082-2009 standard of test methods for long-term performance and durability of common concrete.
According to the detection results of the first to fifth examples and the first to sixth comparative examples, the addition of the polyvinyl alcohol, the borax and the lubricant can effectively reduce the porosity of the concrete and improve the strength and the impermeability of the concrete.
According to the detection results of the sixth to eighth examples and the seventh to twelfth comparative examples, the porosity of the concrete can be further reduced by adding the nano silica sol, the carbon fibers and the dispersing agent.
From the detection results of the ninth embodiment to the eleventh embodiment, it is known that the porosity of the concrete can be further reduced by adding the crack repairing glue of the Sho-BOND in Japan.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The concrete mortar is characterized by comprising the following raw materials in parts by weight: 220 parts of cement-180-.
2. The concrete mortar of claim 1, wherein the raw materials comprise the following components in parts by weight: 200-210 parts of cement, 700-750 parts of sand, 1200-1250 parts of gravel, 60-65 parts of fly ash, 50-77 parts of slag micro powder, 168 parts of water 159, 4-4.9 parts of water reducing agent, 500-570 parts of bentonite, 356 parts of polyvinyl alcohol 310-containing material, 480 parts of isopropanol 412-containing material, 120 parts of borax 110-containing material and 20-26 parts of lubricant.
3. The concrete mortar of claim 2, wherein the raw materials comprise the following components in parts by weight: 207 parts of cement, 708 parts of sand, 1215 parts of broken stone, 62 parts of fly ash, 47 parts of slag micro powder, 160 parts of water, 4.7 parts of a water reducing agent, 566 parts of bentonite, 341 parts of polyvinyl alcohol, 456 parts of isopropanol, 116 parts of borax and 24 parts of a lubricating agent.
4. A concrete mortar according to claim 1, characterized in that: the lubricant comprises the following components in parts by weight: 14-29 parts of fatty alcohol-polyoxyethylene ether and 16-22 parts of polydimethylsiloxane.
5. The concrete mortar of claim 1, further comprising the following components in parts by weight: 190-310 parts of nano silica sol, 320 parts of carbon fiber and 20-60 parts of dispersing agent.
6. A concrete mortar according to claim 5, wherein: the dispersing agent comprises the following components in parts by weight: 10-25 parts of ethanol and 19-33 parts of dimethyl carbonate.
7. The concrete mortar of claim 5, further comprising the following components in parts by weight: 14-22 parts of Nippon SHO-BOND crack repair glue.
8. A method of preparing a concrete mortar according to any one of claims 1 to 8, characterized by comprising the steps of:
the concrete mortar is prepared by dry-mixing cement, sand, broken stone, fly ash, slag micro powder, bentonite and polyvinyl alcohol for 2-3 minutes at the rotating speed of 60 revolutions per minute, then adding a water reducing agent and water, stirring for 1-2 minutes, then adding polyvinyl alcohol, isopropanol and a lubricant, stirring for 2-3 minutes, and finally adding borax, and stirring for 1-3 minutes.
9. The method for preparing a concrete mortar according to claim 8, characterized by comprising the steps of:
the concrete mortar is prepared by dry-mixing cement, sand, broken stone, fly ash, slag micro powder, bentonite and polyvinyl alcohol for 2-3 minutes at the rotating speed of 60 revolutions per minute, then adding nano silica sol, carbon fiber and a dispersing agent, stirring for 1-2 minutes, then adding a water reducing agent and water, stirring for 1-2 minutes, then adding polyvinyl alcohol, isopropanol and a lubricating agent, stirring for 2-3 minutes, and finally adding borax, and stirring for 1-3 minutes.
10. The method for preparing a concrete mortar according to claim 9, characterized by comprising the steps of:
dry-mixing cement, fly ash, slag micro powder, bentonite and polyvinyl alcohol for 2-3 minutes at a rotating speed of 60 revolutions per minute to obtain a first mixed material;
stirring sand, broken stone, nano silica sol, carbon fiber, a dispersing agent and Nippon SHO-BOND crack repair glue for 1-2 minutes at the rotating speed of 60 revolutions per minute to obtain a second mixed material;
and mixing the first mixed material and the second mixed material, adding a water reducing agent and water, stirring at the rotating speed of 60 revolutions per minute for 1-2 minutes, adding polyvinyl alcohol, isopropanol and a lubricating agent, stirring for 2-3 minutes, adding borax, and stirring for 1-3 minutes to obtain the concrete mortar.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114606957A (en) * | 2022-03-05 | 2022-06-10 | 山东鲁道建设工程有限公司 | Railway slope prefabricated assembled post-cast framework slope protection structure and construction method thereof |
| CN115073086A (en) * | 2022-06-10 | 2022-09-20 | 齐齐哈尔大学 | Modified concrete regenerated from waste fresh concrete and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4937033A (en) * | 1985-08-06 | 1990-06-26 | Onoda Cement Co., Ltd. | Method of forming protective layer on concrete or mortar |
| EP1831126A1 (en) * | 2004-11-25 | 2007-09-12 | Cemex Trademarks Worldwide Ltd. | Concrete and mortar additive, process for the preparation thereof, and its use, as well as concrete or mortar containing it |
| CN106336182A (en) * | 2016-08-18 | 2017-01-18 | 苏州大乘环保建材有限公司 | Self-leveling rapid-hardening early-strength repair mortar and preparation method and application method thereof |
| CN107793088A (en) * | 2017-11-29 | 2018-03-13 | 戴凤 | Lightweight anti-cracking heat insulation mortar |
| CN108298916A (en) * | 2018-04-04 | 2018-07-20 | 合肥易美特建材有限公司 | A kind of toughening cracking resistance cement heat preserving mortar and preparation method thereof |
| CN108726937A (en) * | 2018-07-10 | 2018-11-02 | 安徽省神洲建材科技有限公司 | A kind of preferable thermal insulation mortar of cracking resistance and preparation method thereof |
-
2020
- 2020-07-23 CN CN202010714768.0A patent/CN111848039A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4937033A (en) * | 1985-08-06 | 1990-06-26 | Onoda Cement Co., Ltd. | Method of forming protective layer on concrete or mortar |
| EP1831126A1 (en) * | 2004-11-25 | 2007-09-12 | Cemex Trademarks Worldwide Ltd. | Concrete and mortar additive, process for the preparation thereof, and its use, as well as concrete or mortar containing it |
| CN106336182A (en) * | 2016-08-18 | 2017-01-18 | 苏州大乘环保建材有限公司 | Self-leveling rapid-hardening early-strength repair mortar and preparation method and application method thereof |
| CN107793088A (en) * | 2017-11-29 | 2018-03-13 | 戴凤 | Lightweight anti-cracking heat insulation mortar |
| CN108298916A (en) * | 2018-04-04 | 2018-07-20 | 合肥易美特建材有限公司 | A kind of toughening cracking resistance cement heat preserving mortar and preparation method thereof |
| CN108726937A (en) * | 2018-07-10 | 2018-11-02 | 安徽省神洲建材科技有限公司 | A kind of preferable thermal insulation mortar of cracking resistance and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 沈春林主编: "《预拌砂浆的生产与施工》", 31 August 2015, 中国建材工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114606957A (en) * | 2022-03-05 | 2022-06-10 | 山东鲁道建设工程有限公司 | Railway slope prefabricated assembled post-cast framework slope protection structure and construction method thereof |
| CN115073086A (en) * | 2022-06-10 | 2022-09-20 | 齐齐哈尔大学 | Modified concrete regenerated from waste fresh concrete and preparation method thereof |
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