CN111470829A - High-strength concrete and production process thereof - Google Patents
High-strength concrete and production process thereof Download PDFInfo
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- CN111470829A CN111470829A CN202010193896.5A CN202010193896A CN111470829A CN 111470829 A CN111470829 A CN 111470829A CN 202010193896 A CN202010193896 A CN 202010193896A CN 111470829 A CN111470829 A CN 111470829A
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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
- C04B28/10—Lime cements or magnesium oxide cements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
- B02C2018/147—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers of the plural stage type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
- B02C2023/165—Screen denying egress of oversize material
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- 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)
- Food Science & Technology (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a high-strength concrete and a production process thereof, wherein the high-strength concrete comprises the following raw materials in parts by weight: 15-25 parts of portland cement, 10-15 parts of granite, 5-15 parts of fly ash, 10-15 parts of lime, 4-8 parts of a water reducing agent, 20-40 parts of sand, 5-10 parts of coarse aggregate, 10-15 parts of fine aggregate, 0.1-0.5 part of carbon nanofiber, 1-3 parts of basalt fiber, 0.1-0.5 part of glass fiber and 30-50 parts of water; the coarse aggregate and the fine aggregate are both prepared by waste concrete through a crushing and grinding integrated machine, the particle size of the coarse aggregate is 5-10mm, and the particle size of the fine aggregate is 1-5 mm. The method realizes the reutilization of the waste concrete, and the strength of the prepared concrete can meet the strength grade requirement of the high-strength concrete.
Description
Technical Field
The invention relates to the technical field of concrete preparation, in particular to high-strength concrete and a production process thereof.
Background
Concrete is a generic term for engineering composites where aggregates are cemented into a whole by cementitious materials. Concrete having a strength grade of C60 or above is generally referred to as high strength concrete. The high-strength concrete is produced by using cement, sand and stone as raw materials and adding a water reducing agent or adding a mixture of fly ash, F mineral powder, slag, silicon powder and the like at the same time through a conventional process. The high-strength concrete is used as a new building material, and has the advantages of high compressive strength, strong deformation resistance, high density and low porosity, and can be widely applied to high-rise building structures, large-span bridge structures and certain special structures. The high-strength concrete has the greatest characteristic of high compressive strength which is generally 4-6 times of common strength concrete, so that the cross section of a member can be reduced, and the high-strength concrete is most suitable for high-rise buildings.
In the conventional concrete preparation, when waste concrete is used as a raw material, the strength of the prepared concrete cannot meet the requirement of high-strength concrete, and the waste concrete has the problems of difficulty in crushing and the like, so that the secondary utilization of the waste concrete is restricted.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides the high-strength concrete and the production process thereof, so that the waste concrete is recycled, and the strength of the prepared concrete can meet the strength grade requirement of the high-strength concrete.
The high-strength concrete provided by the invention comprises the following raw materials in parts by weight:
15-25 parts of portland cement, 10-15 parts of granite, 5-15 parts of fly ash, 10-15 parts of lime, 4-8 parts of a water reducing agent, 20-40 parts of sand, 5-10 parts of coarse aggregate, 10-15 parts of fine aggregate, 0.1-0.5 part of carbon nanofiber, 1-3 parts of basalt fiber, 0.1-0.5 part of glass fiber and 30-50 parts of water;
the coarse aggregate and the fine aggregate are both prepared by waste concrete through a crushing and grinding integrated machine, the particle size of the coarse aggregate is 5-10mm, and the particle size of the fine aggregate is 1-5 mm.
Preferably, the integrated grinding and milling machine comprises a housing having a receiving space, the upper end of the housing is communicated with a feed hopper, the receiving space of the housing further comprises a grinding assembly and a milling assembly, the grinding assembly is positioned right above the milling assembly and comprises two groups of horizontally distributed grinding rollers, the grinding rollers are provided with a plurality of first grinding knives, the side wall of the housing is further fixedly provided with second grinding knives matched with the first grinding knives, the grinding assembly comprises two groups of horizontally distributed grinding rollers, the grinding rollers are provided with a plurality of milling knives, the lower end of the second grinding mechanism is provided with symmetrically distributed arc-shaped screen meshes, the screen meshes are detachably connected to the inner wall of the housing through mounting frames, the grinding rollers are further fixedly provided with scraping plates, and the length of the scraping plates is greater than that of the milling knives, one side of the shell is also provided with a first discharge hole which is positioned below the screen, the first discharge hole is hinged with a sealing door, and the sealing door can open or close the first discharge hole around the hinged part.
Preferably, a buffer plate which is arranged in a downward inclined mode is further arranged between the crushing assembly and the grinding assembly, and the buffer plate is fixed on the inner wall of the shell.
Preferably, the upper end of the accommodating space of the housing further includes a spray pipe for dust removal, the spray pipe includes a water distribution pipe and a rotary sleeve pipe sleeved outside the water distribution pipe, the rotary sleeve pipe is rotatably connected with the water distribution pipe, one end of the rotary sleeve pipe penetrates through the side wall of the housing and is fixedly connected with an output shaft of a motor located outside the housing, the rotary sleeve pipe is rotatably connected with the side wall of the housing, one end of the water distribution pipe, which is far away from the motor, penetrates through the side wall of the housing and is communicated with a water pipe, the water distribution pipe is fixedly connected with the side wall of the housing, the water distribution pipe is provided with a plurality of first through holes, and the rotary sleeve pipe is provided with a plurality of second through holes.
Preferably, the first through holes are uniformly distributed in the axial direction and the circumferential direction of the water distribution pipe, the second through holes are uniformly distributed in the axial direction and the circumferential direction of the rotary sleeve, the axial distance between the first through holes on the water distribution pipe is the same as the axial distance between the second through holes on the rotary sleeve, the distribution number of the first through holes on the water distribution pipe is larger than the circumferential distribution number of the second through holes on the rotary sleeve, and the distance between adjacent first through holes circumferentially distributed on the water distribution pipe is larger than the inner diameter of one side of the second through holes close to the water distribution pipe.
Preferably, the casing is still including the water conservancy diversion filter plate that the slope set up, the water conservancy diversion filter screen is located the below of first discharge gate, just it collects the chamber to form fine aggregate between water conservancy diversion filter plate and the casing bottom, fine aggregate is collected chamber one side and is opened there is the second discharge gate.
Preferably, the water reducing agent is one or more of naphthalene sulfonic acid-based, polycarboxylic acid-based and melamine-based high-efficiency water reducing agents.
The method for producing the high-strength concrete comprises the following steps:
s1: pretreatment of raw materials: crushing granite and lime, and grinding the crushed granite and lime by a ball grinder respectively;
s2: adding a proper amount of water into portland cement, fly ash, crushed granite, lime, sand, coarse aggregate and fine aggregate, and mixing;
s3: adding a water reducing agent, carbon nanofibers, basalt fibers, glass fibers and the balance of water into the mixed solution in the S2, and uniformly stirring;
s4: and (5) pouring and curing the uniformly mixed mixture in the step S3 to obtain a finished product.
Preferably, the mixing temperature in S2 is 25-35 ℃.
Preferably, the mixing temperature in S3 is 45-55 ℃.
Compared with the prior art, the invention has the beneficial technical effects that:
(1) this application has solved current discarded concrete reuse's problem with the raw materials of discarded concrete as production aggregate, and the concrete strength grade of preparation can reach more than C60.
(2) The crushing and grinding integrated machine researched and developed by the application improves the efficiency of processing waste concrete, and realizes the synchronous preparation of coarse aggregate and fine aggregate.
Drawings
FIG. 1 is a schematic structural diagram of a crushing and grinding integrated machine according to the present invention;
FIG. 2 is a top view of the crushing and grinding all-in-one machine of the present invention;
fig. 3 is a sectional view of a spray pipe according to the present invention.
In the figure: 1-shell, 2-feed hopper, 3-spray pipeline, 4-crushing roller, 5-crushing knife, 6-buffer plate, 7-grinding roller, 8-scraping plate, 9-second discharge port, 10-flow guide filter plate, 11-mounting frame, 12-sealing door, 13-screen, 14-grinding knife, 15-first discharge port, 16-grinding knife, 17-motor, 18-water distributor, 19-first through hole, 20-rotary sleeve and 21-second through hole.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Referring to fig. 1-3, the integrated pulverizing and grinding machine provided by the present invention comprises a housing having a receiving space, the upper end of the housing is communicated with a feed hopper, the receiving space of the housing further comprises a pulverizing assembly and a grinding assembly, the pulverizing assembly is located right above the grinding assembly, the pulverizing assembly comprises two groups of horizontally distributed pulverizing rollers, the pulverizing rollers are provided with a plurality of first pulverizing knives, the side wall of the housing is further fixedly provided with second pulverizing knives matching with the first pulverizing knives, the grinding assembly comprises two groups of horizontally distributed grinding rollers, the grinding rollers are provided with a plurality of grinding knives, the lower end of the second pulverizing mechanism is provided with symmetrically distributed arc-shaped screens, the screens are detachably connected to the inner wall of the housing through mounting frames, the grinding rollers are further fixedly provided with a scraping plate, and the length of the scraping plate is greater than that of the grinding knives, one side of the shell is also provided with a first discharge hole which is positioned below the screen, the first discharge hole is hinged with a sealing door, and the sealing door can open or close the first discharge hole around the hinged part.
The crushing assembly and the grinding assembly further comprise a buffer plate arranged in a downward inclined mode, and the buffer plate is fixed to the inner wall of the shell.
The upper end of the accommodating space of the shell further comprises a spraying pipeline for dust removal, the spraying pipeline comprises a water distribution pipe and a rotary sleeve pipe, the rotary sleeve pipe is arranged on the outer side of the water distribution pipe, the rotary sleeve pipe is connected with the water distribution pipe in a rotating mode, one end of the rotary sleeve pipe penetrates through the side wall of the shell and is fixedly connected with an output shaft of a motor located outside the shell, the rotary sleeve pipe is connected with the side wall of the shell in a rotating mode, the water distribution pipe is far away from one end of the motor penetrates through the side wall of the shell and is communicated with a water conveying pipeline, the water distribution pipe is fixedly connected with the side wall of the shell, a plurality of first through holes are formed in the water distribution pipe, and a plurality of.
The axial and circumferential uniform distribution of the first through holes on the water distribution pipe, the axial and circumferential uniform distribution of the second through holes on the rotary sleeve, the axial distance of the first through holes on the water distribution pipe is the same as the axial distance of the second through holes on the rotary sleeve, the distribution number of the first through holes on the water distribution pipe is greater than the circumferential distribution number of the second through holes on the rotary sleeve, and the distance between adjacent first through holes circumferentially distributed on the water distribution pipe is greater than the inner diameter of one side of the second through holes close to the water distribution pipe.
The casing is still including the water conservancy diversion filter plate that the slope set up, the water conservancy diversion filter screen is located the below of first discharge gate, just it collects the chamber to form fine aggregate between water conservancy diversion filter plate and the casing bottom, fine aggregate is collected chamber one side and is opened there is the second discharge gate.
The concrete enters the containing space of the shell from the feed hopper and is crushed by the crushing component, the crushed concrete falls to the grinding cavity along the guide plate, the grinding device in the grinding cavity grinds the crushed concrete, when the ground material particles are smaller than the aperture (10mm) of the screen mesh, the ground material particles can pass through the screen mesh and enter the aggregate collecting cavity, a flow guide filter plate can be arranged in the aggregate collection cavity, the aperture of the flow guide filter plate is 5mm, the particle size range of concrete particles trapped by the flow guide filter plate is 5-10mm, the concrete particles are discharged from the first discharge hole and used as coarse aggregates, the concrete particles passing through the flow guide filter plate enter the fine aggregate collection cavity, and then discharging the concrete particles in the fine aggregate collecting cavity and treating the concrete particles by using dust collection equipment, so that the particles with the particle size of less than 1mm are sorted out, and the rest particles with the particle size of 1-5mm are used as fine aggregates.
Example 1
The high-strength concrete provided by the invention comprises the following raw materials in parts by weight:
15 parts of portland cement, 10 parts of granite, 5 parts of fly ash, 10 parts of lime, 4 parts of a water reducing agent, 20 parts of sand, 5 parts of coarse aggregate, 10 parts of fine aggregate, 0.1 part of carbon nanofiber, 1 part of basalt fiber, 0.1 part of glass fiber and 30 parts of water;
the coarse aggregate and the fine aggregate are both prepared by crushing and grinding waste concrete through an all-in-one machine, the particle size of the coarse aggregate is 5-10mm, and the particle size of the fine aggregate is 1-5 mm.
The water reducing agent is one or more of naphthalene sulfonic acid series, polycarboxylic acid series and melamine series high-efficiency water reducing agents.
The method for producing the high-strength concrete comprises the following steps:
s1: pretreatment of raw materials: crushing granite and lime, and grinding the crushed granite and lime by a ball grinder respectively;
s2: adding a proper amount of water into portland cement, fly ash, crushed granite, lime, sand, coarse aggregate and fine aggregate, and mixing;
s3: adding a water reducing agent, carbon nanofibers, basalt fibers, glass fibers and the balance of water into the mixed solution in the S2, and uniformly stirring;
s4: and (5) pouring and curing the uniformly mixed mixture in the step S3 to obtain a finished product.
The temperature of mixing in S2 was 25 ℃.
The temperature of mixing in S3 was 45 ℃.
The strength grade of the prepared concrete reaches C65.
Example 2
The high-strength concrete provided by the invention comprises the following raw materials in parts by weight:
25 parts of portland cement, 15 parts of granite, 15 parts of fly ash, 15 parts of lime, 8 parts of a water reducing agent, 40 parts of sand, 10 parts of coarse aggregate, 15 parts of fine aggregate, 0.5 part of carbon nanofiber, 3 parts of basalt fiber, 0.5 part of glass fiber and 50 parts of water;
the coarse aggregate and the fine aggregate are both prepared by crushing and grinding waste concrete through an all-in-one machine, the particle size of the coarse aggregate is 5-10mm, and the particle size of the fine aggregate is 1-5 mm.
The water reducing agent is one or more of naphthalene sulfonic acid series, polycarboxylic acid series and melamine series high-efficiency water reducing agents.
The method for producing the high-strength concrete comprises the following steps:
s1: pretreatment of raw materials: crushing granite and lime, and grinding the crushed granite and lime by a ball grinder respectively;
s2: adding a proper amount of water into portland cement, fly ash, crushed granite, lime, sand, coarse aggregate and fine aggregate, and mixing;
s3: adding a water reducing agent, carbon nanofibers, basalt fibers, glass fibers and the balance of water into the mixed solution in the S2, and uniformly stirring;
s4: and (5) pouring and curing the uniformly mixed mixture in the step S3 to obtain a finished product.
The temperature of mixing in S2 was 35 ℃.
The temperature of mixing in S3 was 55 ℃.
The strength grade of the prepared concrete reaches C65.
Example 3
The high-strength concrete provided by the invention comprises the following raw materials in parts by weight:
20 parts of portland cement, 12 parts of granite, 10 parts of fly ash, 12 parts of lime, 6 parts of a water reducing agent, 30 parts of sand, 8 parts of coarse aggregate, 12 parts of fine aggregate, 0.4 part of carbon nanofiber, 2 parts of basalt fiber, 0.4 part of glass fiber and 40 parts of water;
the coarse aggregate and the fine aggregate are both prepared by crushing and grinding waste concrete through an all-in-one machine, the particle size of the coarse aggregate is 5-10mm, and the particle size of the fine aggregate is 1-5 mm.
The water reducing agent is one or more of naphthalene sulfonic acid series, polycarboxylic acid series and melamine series high-efficiency water reducing agents.
The method for producing the high-strength concrete comprises the following steps:
s1: pretreatment of raw materials: crushing granite and lime, and grinding the crushed granite and lime by a ball grinder respectively;
s2: adding a proper amount of water into portland cement, fly ash, crushed granite, lime, sand, coarse aggregate and fine aggregate, and mixing;
s3: adding a water reducing agent, carbon nanofibers, basalt fibers, glass fibers and the balance of water into the mixed solution in the S2, and uniformly stirring;
s4: and (5) pouring and curing the uniformly mixed mixture in the step S3 to obtain a finished product.
The temperature of mixing in S2 was 30 ℃.
The temperature of mixing in S3 was 50 ℃.
The strength grade of the prepared concrete reaches C70.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The high-strength concrete is characterized by comprising the following raw materials in parts by weight:
15-25 parts of portland cement, 10-15 parts of granite, 5-15 parts of fly ash, 10-15 parts of lime, 4-8 parts of a water reducing agent, 20-40 parts of sand, 5-10 parts of coarse aggregate, 10-15 parts of fine aggregate, 0.1-0.5 part of carbon nanofiber, 1-3 parts of basalt fiber, 0.1-0.5 part of glass fiber and 30-50 parts of water;
the coarse aggregate and the fine aggregate are both prepared by waste concrete through a crushing and grinding integrated machine, the particle size of the coarse aggregate is 5-10mm, and the particle size of the fine aggregate is 1-5 mm.
2. The high-strength concrete according to claim 1, wherein the grinding and milling integrated machine comprises a housing having a receiving space, the upper end of the housing is connected to a feed hopper, the receiving space of the housing further comprises a grinding assembly and a milling assembly, the grinding assembly is located directly above the grinding assembly, the grinding assembly comprises two sets of horizontally distributed grinding rollers, the grinding rollers are provided with a plurality of first grinding knives, the side wall of the housing is further fixedly provided with second grinding knives matching with the first grinding knives, the milling assembly comprises two sets of horizontally distributed milling rollers, the grinding rollers are provided with a plurality of grinding knives, the lower end of the second grinding mechanism is provided with symmetrically distributed arc-shaped screens, the screens are detachably connected to the inner wall of the housing through mounting brackets, the milling rollers are further fixedly provided with a scraper plate, the length of the scraping plate is larger than that of the grinding knife, a first discharge hole is formed in one side of the shell and located below the screen, a sealing door is hinged to the first discharge hole, and the sealing door can open or close the first discharge hole around the hinged portion.
3. The high strength concrete of claim 2, further comprising a downwardly inclined baffle plate between the size reduction assembly and the grinding assembly, the baffle plate being fixed to an inner wall of the housing.
4. The high-strength concrete according to claim 2, wherein the upper end of the accommodating space of the shell further comprises a spray pipeline for dust removal, the spray pipeline comprises a water distribution pipe and a rotary sleeve sleeved outside the water distribution pipe, the rotary sleeve is rotatably connected with the water distribution pipe, one end of the rotary sleeve penetrates through the side wall of the shell and is fixedly connected with an output shaft of a motor located outside the shell, the rotary sleeve is rotatably connected with the side wall of the shell, one end of the water distribution pipe, which is far away from the motor, penetrates through the side wall of the shell and is communicated with a water delivery pipeline, the water distribution pipe is fixedly connected with the side wall of the shell, the water distribution pipe is provided with a plurality of first through holes, and the rotary sleeve is provided with a plurality of second through holes.
5. The high-strength concrete as claimed in claim 4, wherein the first through holes are uniformly distributed in the axial direction and the circumferential direction of the water distributor, the second through holes are uniformly distributed in the axial direction and the circumferential direction of the rotary sleeve, the axial distance between the first through holes on the water distributor is the same as the axial distance between the second through holes on the rotary sleeve, the number of the first through holes distributed on the water distributor is greater than the number of the second through holes distributed in the circumferential direction on the rotary sleeve, and the distance between adjacent first through holes circumferentially distributed on the water distributor is greater than the inner diameter of the second through holes on the side close to the water distributor.
6. The high-strength concrete according to claim 4, wherein the shell further comprises a flow guide filter plate which is obliquely arranged, the flow guide filter plate is located below the first discharge hole, a fine aggregate collecting cavity is formed between the flow guide filter plate and the bottom of the shell, and a second discharge hole is formed in one side of the fine aggregate collecting cavity.
7. The high-strength concrete according to claim 1, wherein the water reducing agent is one or more of a naphthalene sulfonic acid-based, polycarboxylic acid-based and melamine-based superplasticizers.
8. A process for producing the high strength concrete according to claim 1, wherein the method comprises the steps of:
s1: pretreatment of raw materials: crushing granite and lime, and grinding the crushed granite and lime by a ball grinder respectively;
s2: adding a proper amount of water into portland cement, fly ash, crushed granite, lime, sand, coarse aggregate and fine aggregate, and mixing;
s3: adding a water reducing agent, carbon nanofibers, basalt fibers, glass fibers and the balance of water into the mixed solution in the S2, and uniformly stirring;
s4: and (5) pouring and curing the uniformly mixed mixture in the step S3 to obtain a finished product.
9. The process for producing high-strength concrete according to claim 8, wherein the mixing temperature in S2 is 25 to 35 ℃.
10. The process for producing high-strength concrete according to claim 1, wherein the mixing temperature in S3 is 45 to 55 ℃.
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| CN202010193896.5A CN111470829A (en) | 2020-03-19 | 2020-03-19 | High-strength concrete and production process thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112851224A (en) * | 2021-03-05 | 2021-05-28 | 林锦全 | High-performance anti-cracking impact-resistant modified concrete and preparation method thereof |
| CN113185164A (en) * | 2021-04-27 | 2021-07-30 | 张飞 | Method for preparing recycled concrete fine aggregate by using building brick-concrete waste |
| WO2022199171A1 (en) * | 2021-03-24 | 2022-09-29 | 北京中煤矿山工程有限公司 | Anti-crack concrete for frozen well walls and preparation method therefor |
| CN115196911A (en) * | 2022-07-11 | 2022-10-18 | 嘉兴南方混凝土制品有限公司 | Preparation method and device of high-strength concrete |
| WO2022242862A1 (en) * | 2021-05-20 | 2022-11-24 | Strabag Ag Spezialtiefbau | Fresh concrete |
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| CN112851224A (en) * | 2021-03-05 | 2021-05-28 | 林锦全 | High-performance anti-cracking impact-resistant modified concrete and preparation method thereof |
| WO2022199171A1 (en) * | 2021-03-24 | 2022-09-29 | 北京中煤矿山工程有限公司 | Anti-crack concrete for frozen well walls and preparation method therefor |
| CN113185164A (en) * | 2021-04-27 | 2021-07-30 | 张飞 | Method for preparing recycled concrete fine aggregate by using building brick-concrete waste |
| WO2022242862A1 (en) * | 2021-05-20 | 2022-11-24 | Strabag Ag Spezialtiefbau | Fresh concrete |
| CN115196911A (en) * | 2022-07-11 | 2022-10-18 | 嘉兴南方混凝土制品有限公司 | Preparation method and device of high-strength concrete |
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Address after: 211500 Liuhe Economic Development Zone, Liuhe District, Nanjing City, Jiangsu Province Applicant after: Jiangsu Lujing New Material Technology Co.,Ltd. Address before: 211500 Liuhe Economic Development Zone, Liuhe District, Nanjing City, Jiangsu Province Applicant before: Nanjing Lujing Concrete Co.,Ltd. |
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Application publication date: 20200731 |