CN114477882A - High-strength concrete and beam-column structure using same - Google Patents
High-strength concrete and beam-column structure using same Download PDFInfo
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- CN114477882A CN114477882A CN202210085850.0A CN202210085850A CN114477882A CN 114477882 A CN114477882 A CN 114477882A CN 202210085850 A CN202210085850 A CN 202210085850A CN 114477882 A CN114477882 A CN 114477882A
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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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
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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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- 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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Abstract
The high-strength concrete and the beam-column structure using the same are prepared from the following raw materials in parts by mass: cement: 300-350 parts; fly ash: 30-40 parts; sand: 650-700 parts; crushing stone: 1000-1200 parts; polycarboxylic acid water reducing agent: 10-15 parts; reinforcing agent: 80-100 parts. The application adopts the cooperation of the polycarboxylic acid water reducing agent and the reinforcing agent, can ensure the flowability and the non-segregation of the concrete slurry while reducing the water consumption, thereby also having the pumping capacity matched with the obtained concrete on the premise that the obtained concrete has better strength so as to be used in high-rise or super high-rise buildings.
Description
Technical Field
The application relates to high-strength concrete and a beam-column structure using the same.
Background
Concrete is used as a main building material, and a higher embedded end is required to meet the field requirement on some special occasions. However, after the strength is increased, there are a series of problems such as that after the strength is increased, the toughness is weakened, and after a large force is applied, brittle fracture is easily generated. Therefore, at present, concrete is designed by balancing various components to balance various parameters. In fact, based on the state of the art materials, the problem cannot be solved at all. The construction can be realized by arranging more steel bars, but the construction cost is greatly increased, and the function of concrete as a main material is not exerted, so that the effective improvement on the components of the concrete is imperative.
Disclosure of Invention
In order to solve the problems, the application discloses a high-strength concrete on one hand, which is prepared from the following raw materials in parts by mass: cement: 300-350 parts; fly ash: 30-40 parts; sand: 650-700 parts; crushing stone: 1000-1200 parts; polycarboxylic acid water reducing agent: 10-15 parts; reinforcing agent: 80-100 parts. The application adopts the cooperation of the polycarboxylic acid water reducing agent and the reinforcing agent, can ensure the flowability and the non-segregation of the concrete slurry while reducing the water consumption, thereby also having the pumping capacity matched with the obtained concrete on the premise that the obtained concrete has better strength so as to be used in high-rise or super high-rise buildings.
Preferably, the mass ratio of water to material is 0.08-0.10.
Preferably, the feed also comprises the following raw materials in parts by weight: redispersible rubber powder: 10-15 parts.
Preferably, the reinforcing agent is a vacuum residue oxide.
Preferably, the vacuum residue oxide is obtained by treating the following way:
and under the condition that the temperature is not higher than 20 ℃, putting the vacuum residue oil and hydrogen peroxide into a ball mill according to the mass ratio of 1:2, and carrying out ball milling for not less than 20min to obtain a mixture as a reinforcing agent. The semi-soluble galactose substance obtained after the oxidation treatment of the vacuum residue is used as the reinforcing agent, so that the dispersibility of the semi-soluble galactose substance in the whole system can be improved, the cost of the reinforcing agent can be reduced, and the semi-soluble galactose substance is suitable for large-scale popularization and application.
On the other hand, the reinforced concrete beam column structure comprises a vertical column, a transverse rod is arranged above the vertical column, two ends of the transverse rod are fixedly connected with the vertical column, a first U-shaped clamping plate and a second U-shaped clamping plate are arranged on the vertical column below the transverse rod, a vertical plate is arranged between the first U-shaped clamping plate and the second U-shaped clamping plate, a transverse supporting plate is arranged below the vertical plate, a fixing plate is arranged on one side of the transverse supporting plate away from the vertical column, the fixing plate is perpendicular to the vertical plate, a first connecting lantern ring is arranged on the fixing plate corresponding to the first U-shaped clamping plate, a second connecting lantern ring is arranged on the fixing plate corresponding to the second U-shaped clamping plate, a through hole is arranged on the vertical plate between the fixing plate and the vertical column, a first fixing rod is arranged between the first U-shaped clamping plate and the second connecting lantern ring, be equipped with the second dead lever between second U-shaped joint board and first connecting collar, pour the concrete layer outside vertical board and horizontal backup pad, the thickness on concrete layer is not less than 10cm, the concrete layer is pour by high-strength concrete and is formed. The supporting beam column of this application concrete adopts the mode of predetermineeing partial subassembly on vertical post, through outer even vertical board, horizontal backup pad and consolidation plate's mode of action, when guaranteeing overall structure stability, has still improved the speed of overall structure assembly, and vertical post generally adopts H shaped steel.
Preferably, a plurality of communicating holes are formed between the vertical plates.
Preferably, the device also comprises a plurality of L-shaped rods, one ends of the L-shaped rods are inserted between the transverse rods and the vertical columns, and the other sides of the L-shaped rods extend in the direction departing from the vertical columns; the number of the L rods is an even number which is not less than 4, and the L rods are symmetrically arranged relative to the vertical plate; the top of L pole and the top parallel and level setting of vertical post.
Preferably, the consolidation plate and the transverse support plate are fixedly connected.
Preferably, the top of the vertical plate is fixedly connected with a transverse extension plate, the transverse extension plate is provided with a plurality of vertical reinforcing rods, and at least one vertical reinforcing rod is arranged between the transverse rod and the vertical column; the outside that vertical plate outwards extended to the consolidation board forms outer knot board, be equipped with the mounting groove that is used for holding vertical board between outer knot board and the vertical board, horizontal extension board links firmly the setting with outer knot board and consolidation board.
This application can bring following beneficial effect:
1. the polycarboxylic acid water reducing agent and the reinforcing agent are adopted for cooperation, the water consumption is reduced, and meanwhile, the flowability and the non-segregation of concrete slurry can be guaranteed, so that the obtained concrete has the pumping capacity matched with the concrete on the premise of having better strength, and can be used in high-rise or super high-rise buildings;
2. the semi-soluble galactose substance obtained after the oxidation treatment of the vacuum residue is used as the reinforcing agent, so that the dispersibility of the semi-soluble galactose substance in the whole system can be improved, the cost of the reinforcing agent can be reduced, and the method is suitable for large-scale popularization and application;
3. the supporting beam column of this application concrete adopts the mode of predetermineeing partial subassembly on vertical post, through outer even vertical board, horizontal backup pad and consolidation plate's mode of action, when guaranteeing overall structure stability, has still improved the speed of overall structure assembly, and vertical post generally adopts H shaped steel.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic view of a beam-column structure.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present application will be explained in detail through the following embodiments.
The application mainly aims at improving the concrete formula, and particularly roughly comprises the following steps:
s1, synthesis of an enhancer:
the method comprises the steps of taking vacuum residue oil from Jinan refining, crushing the vacuum residue oil to be below 20 meshes, putting the vacuum residue oil and hydrogen peroxide into a ball mill according to the mass ratio of 1:2 under the condition that the operation temperature is not higher than 20 ℃, carrying out ball milling for not less than 20min, taking the obtained mixture as a reinforcing agent, and using the hydrogen peroxide as an aqueous solution of the hydrogen peroxide with the concentration of 30 wt%.
S2, mixing of coagulation water:
uniformly mixing cement, fly ash, sand, broken stone, a reinforcing agent and redispersible rubber powder with the label of 42.5, adding water and a water reducing agent, and uniformly stirring and mixing for use.
And S3, testing the obtained slurry, and carrying out actual simulation application by using the beam-column structure shown in the figure 1.
The beam column structure comprises a vertical column 1, a transverse rod 2 is arranged above the vertical column 1, two ends of the transverse rod 2 are fixedly connected with the vertical column 1, a first U-shaped clamping plate 3 and a second U-shaped clamping plate are arranged on the vertical column 1 below the transverse rod 2, a vertical plate 4 is arranged between the first U-shaped clamping plate 3 and the second U-shaped clamping plate, a transverse supporting plate 5 is arranged below the vertical plate 4, a fixing plate 6 is arranged on one side, away from the vertical column 1, of the transverse supporting plate 5, the fixing plate 6 is perpendicular to the vertical plate 4, a first connecting lantern ring 7 is arranged on the fixing plate 6 corresponding to the first U-shaped clamping plate 3, a second connecting lantern ring (not shown) is arranged on the fixing plate 6 corresponding to the second U-shaped clamping plate (not shown), a through hole 8 is arranged on the vertical plate 4 between the fixing plate 6 and the vertical column 1, a first fixing rod 9 is arranged between the first U-shaped clamping plate 3 and the second connecting sleeve ring, a second fixing rod 10 is arranged between the second U-shaped clamping plate and the first connecting sleeve ring 7, and a concrete layer (not shown in the figure) is poured outside the vertical plate 4 and the transverse supporting plate 5. A plurality of communication holes 18 are arranged between the vertical plates 4. Still include a plurality of L poles 11, the one end cartridge of L pole 11 sets up between horizontal pole 2 and vertical post 1, and one side extends towards the direction that deviates from vertical post 1 in addition. The number of the L rods 11 is an even number which is not less than 4, and the L rods 11 are symmetrically arranged relative to the vertical plate 4. The top of the L-shaped rod 11 is arranged flush with the top of the vertical column 1. The consolidation plate 6 is fixedly connected with the transverse support plate 5. The top of vertical board 4 links firmly a horizontal extension board 12, be equipped with a plurality of vertical stiffeners 13 on the horizontal extension board 12, at least one vertical stiffener 13 sets up between horizontal pole 2 and vertical post 1. Vertical plate 4 outwards extends to the outside of consolidating board 6 and forms outer knot board 14, be equipped with the mounting groove that is used for holding vertical plate 4 between outer knot board 14 and the vertical plate 4, horizontal extension board 12 links firmly the setting with outer knot board 14 and consolidation board 6. The connecting structure is characterized in that a transverse rod 2, a first U-shaped clamping plate 3 and a second U-shaped clamping plate are required to be arranged on a column body, a transverse supporting plate 5 and a consolidation plate 6 are installed under the action of a first fixing rod 9 and a second fixing rod 10, then a vertical plate 4 and an outer consolidation plate are clamped, the transverse supporting plate 5 is integrated under the action of the vertical plate, an L-shaped rod 11 is hung, concrete is poured, and connection is finally completed. Because the hole frame structure in this application is more, need use the less concrete of mobility, have better suitability with the high-strength concrete of this application.
The specific implementation mode is as follows:
example 1:
s1, synthesis of an enhancer:
the method comprises the steps of taking vacuum residue oil from Jinan refining, crushing the vacuum residue oil to be below 20 meshes, putting the vacuum residue oil and hydrogen peroxide into a ball mill according to the mass ratio of 1:2 at the operating temperature of not higher than 20 ℃, performing ball milling for not less than 20min, taking the obtained mixture as a reinforcing agent, and using the hydrogen peroxide as an aqueous solution of hydrogen peroxide with the concentration of 30 wt%.
S2, mixing of coagulation water:
30kg of cement with the reference number of 42.5, 3kg of fly ash, 65kg of sand, 100kg of broken stone, 8kg of reinforcing agent and 1kg of redispersible rubber powder are uniformly mixed, water and 1kg of water reducing agent are added according to the water-material ratio of 0.08, and the mixture is stirred and uniformly mixed for use.
S3, testing the obtained slurry, and testing the fluidity according to GB/T50080-2016 (Standard for Performance test of common concrete mixtures), wherein the initial fluidity is 355mm, and the fluidity after 30min is 342 mm;
pouring, curing and curing the slurry serving as a raw material to obtain a test square brick, and testing the flexural strength and the compressive strength after curing for 28 days according to GB/T50107-2010 concrete strength test and evaluation Standard, wherein the flexural strength is 16Mpa and the compressive strength is 66 Mpa;
the limit shrinkage rate of the concrete is 0.005 percent after 28 days according to a contact method in GB/T50082-2009 Standard test method for the long-term performance and the durability of ordinary concrete.
Example 2:
s1, synthesis of an enhancer:
the method comprises the steps of taking vacuum residue oil from Jinan refining, crushing the vacuum residue oil to be below 20 meshes, putting the vacuum residue oil and hydrogen peroxide into a ball mill according to the mass ratio of 1:2 under the condition that the operation temperature is not higher than 20 ℃, carrying out ball milling for not less than 20min, taking the obtained mixture as a reinforcing agent, and using the hydrogen peroxide as an aqueous solution of the hydrogen peroxide with the concentration of 30 wt%.
S2, mixing of coagulation water:
35kg of cement with the reference number of 42.5, 4kg of fly ash, 70kg of sand, 120kg of broken stone, 10kg of reinforcing agent and 1.5kg of redispersible rubber powder are uniformly mixed, water and 1.5kg of water reducing agent are added according to the water-material ratio of 0.10, and the mixture is used after being uniformly stirred and mixed.
S3, testing the obtained slurry, and testing the fluidity according to GB/T50080-2016 (Standard for Performance test of common concrete mixtures), wherein the initial fluidity is 357mm, and the fluidity after 30min is 348 mm;
pouring, curing and curing the slurry serving as a raw material to obtain a test square brick, and testing the flexural strength and the compressive strength after curing for 28 days according to GB/T50107-2010 concrete strength test and evaluation Standard, wherein the flexural strength is 15MPa and the compressive strength is 65 MPa;
the limit shrinkage rate of 28 days is tested to be 0.003 percent according to a contact method in GB/T50082-2009 test method standards for long-term performance and durability of common concrete.
Example 3:
s1, synthesis of an enhancer:
the method comprises the steps of taking vacuum residue oil from Jinan refining, crushing the vacuum residue oil to be below 20 meshes, putting the vacuum residue oil and hydrogen peroxide into a ball mill according to the mass ratio of 1:2 under the condition that the operation temperature is not higher than 20 ℃, carrying out ball milling for not less than 20min, taking the obtained mixture as a reinforcing agent, and using the hydrogen peroxide as an aqueous solution of the hydrogen peroxide with the concentration of 30 wt%.
S2, mixing of coagulation water:
32kg of cement with the reference number of 42.5, 3.5kg of fly ash, 68kg of sand, 110kg of broken stone, 9kg of reinforcing agent and 1.2kg of redispersible rubber powder are uniformly mixed, water and 1.2kg of water reducing agent are added according to the water-material ratio of 0.09, and the mixture is used after being uniformly stirred and mixed.
S3, testing the obtained slurry, and testing the fluidity according to GB/T50080-2016 (Standard for Performance test of common concrete mixtures), wherein the initial fluidity is 353mm, and the fluidity after 30min is 341 mm;
pouring, curing and curing the slurry serving as a raw material to obtain a test square brick, and testing the flexural strength and the compressive strength after curing for 28 days according to GB/T50107-2010 concrete strength test and evaluation Standard, wherein the flexural strength is 17MPa and the compressive strength is 70 MPa;
the limit shrinkage rate of 0.004 percent after 28 days is tested according to a contact method in GB/T50082-2009 Standard test method for the long-term performance and the durability of common concrete.
Comparative example 1:
s1, mixing of coagulation water:
32kg of cement with the reference number of 42.5, 3.5kg of fly ash, 68kg of sand, 110kg of broken stone, 9kg of calcium stearate and 1.2kg of redispersible rubber powder are uniformly mixed, water and 1.2kg of water reducing agent are added according to the water-material ratio of 0.09, and the mixture is stirred and uniformly mixed for use.
S2, testing the obtained slurry, and testing the fluidity according to GB/T50080-2016 (Standard for Performance test of common concrete mixtures), wherein the initial fluidity is 323mm, and the fluidity after 30min is 281 mm;
pouring, curing and curing the slurry serving as a raw material to obtain a test square brick, and testing the flexural strength and the compressive strength after curing for 28 days according to GB/T50107-2010 concrete strength test and evaluation Standard, wherein the flexural strength is 11Mpa and the compressive strength is 51 Mpa;
the limit shrinkage rate of 0.015 percent after 28 days is tested according to a contact method in GB/T50082-2009 test method standards for the long-term performance and the durability of common concrete.
Comparative example 2:
s1, mixing of coagulation water:
32kg of cement with the reference number of 42.5, 3.5kg of fly ash, 68kg of sand, 110kg of broken stone, 9kg of calcium stearate and 1.2kg of redispersible rubber powder are uniformly mixed, water and 1.2kg of water reducing agent are added according to the water-material ratio of 0.09, and the mixture is stirred and uniformly mixed for use.
S2, testing the obtained slurry, and testing the fluidity according to GB/T50080-2016 (Standard for Performance test of common concrete mixtures), wherein the initial fluidity is 311mm, and the fluidity after 30min is 275 mm;
pouring, curing and curing the slurry serving as a raw material to obtain a test square brick, and testing the flexural strength and the compressive strength after curing for 28 days according to GB/T50107-2010 concrete strength test and evaluation Standard, wherein the flexural strength is 10Mpa and the compressive strength is 49 Mpa;
the limit shrinkage rate of 0.097 percent after 28 days is tested according to a contact method in GB/T50082-2009 Standard test method for the Long-term performance and the durability of ordinary concrete.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A high-strength concrete is characterized in that: the composite material is prepared from the following raw materials in parts by mass: cement: 300-350 parts; fly ash: 30-40 parts; sand: 650-700 parts; crushing stone: 1000-1200 parts; polycarboxylic acid water reducing agent: 10-15 parts; reinforcing agent: 80-100 parts.
2. A high strength concrete according to claim 1, wherein: the mass ratio of water to material is 0.08-0.10.
3. A high strength concrete according to claim 1, wherein: the material also comprises the following raw materials in parts by weight: redispersible rubber powder: 10-15 parts.
4. A high strength concrete according to claim 1, wherein: the reinforcing agent is a vacuum residue oxide.
5. A high strength concrete according to claim 4, wherein: the vacuum residue oxide is obtained by processing the following steps:
and under the condition that the temperature is not higher than 20 ℃, putting the vacuum residue oil and hydrogen peroxide into a ball mill according to the mass ratio of 1:2, and carrying out ball milling for not less than 20min to obtain a mixture as a reinforcing agent.
6. The utility model provides an use reinforced concrete beam column structure of any high-strength concrete of 1-5 which characterized in that: comprises a vertical column, a transverse rod is arranged above the vertical column, two ends of the transverse rod are fixedly connected with the vertical column, a first U-shaped clamping plate and a second U-shaped clamping plate are arranged on the vertical column below the transverse rod, a vertical plate is arranged between the first U-shaped clamping plate and the second U-shaped clamping plate, a transverse support plate is arranged below the vertical plate, a fixing plate is arranged on one side of the transverse support plate away from the vertical column, the fixing plate is vertically arranged with the vertical plate, a first connecting lantern ring is arranged on the fixing plate corresponding to the first U-shaped clamping plate, a second connecting lantern ring is arranged on the fixing plate corresponding to the second U-shaped clamping plate, a through hole is arranged on the vertical plate between the fixing plate and the vertical column, a first fixing rod is arranged between the first U-shaped clamping plate and the second connecting lantern ring, a second fixing rod is arranged between the second U-shaped clamping plate and the first connecting lantern ring, concrete layers are poured outside the vertical plates and the transverse supporting plates, the thickness of each concrete layer is not less than 10cm, and the concrete layers are formed by pouring high-strength concrete.
7. A reinforced concrete beam column structure as claimed in claim 6, wherein: a plurality of communicating holes are arranged between the vertical plates.
8. A reinforced concrete beam column structure as claimed in claim 6, wherein: the device also comprises a plurality of L-shaped rods, one ends of the L-shaped rods are inserted between the transverse rods and the vertical columns, and the other sides of the L-shaped rods extend towards the direction departing from the vertical columns; the number of the L rods is an even number which is not less than 4, and the L rods are symmetrically arranged relative to the vertical plate; the top of L pole and the top parallel and level setting of vertical post.
9. A reinforced concrete beam column structure as claimed in claim 6, wherein: the consolidation plate is fixedly connected with the transverse supporting plate.
10. A reinforced concrete beam column structure as claimed in claim 6, wherein: the top of the vertical plate is fixedly connected with a transverse extending plate, a plurality of vertical reinforcing rods are arranged on the transverse extending plate, and at least one vertical reinforcing rod is arranged between the transverse rod and the vertical column; the outside that vertical plate outwards extended to the consolidation board forms outer knot board, be equipped with the mounting groove that is used for holding vertical board between outer knot board and the vertical board, horizontal extension board links firmly the setting with outer knot board and consolidation board.
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