CN111960746A - Lightweight high-strength concrete and preparation method thereof - Google Patents
Lightweight high-strength concrete and preparation method thereof Download PDFInfo
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- CN111960746A CN111960746A CN202010915730.XA CN202010915730A CN111960746A CN 111960746 A CN111960746 A CN 111960746A CN 202010915730 A CN202010915730 A CN 202010915730A CN 111960746 A CN111960746 A CN 111960746A
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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
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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
- C04B2111/00008—Obtaining or using nanotechnology related materials
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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
- C04B2111/40—Porous or lightweight materials
Abstract
The invention discloses a preparation method of light high-strength concrete, which prevents the concrete from cracking and prevents the macroscopic crack from expanding by using aluminum silicate ceramic fiber, improves the peeling and separating capacity of the concrete for resisting freeze-thaw cycle, increases the compression and breaking strength of the concrete by using an auxiliary agent, and ensures that the concrete has the characteristic of light weight by using the prepared modified fly ash; according to the preparation method, the prepared concrete semi-finished product is crushed and refined by using the crushing and refining device, the crushing and refining device crushes the concrete semi-finished product through the slitting knife, the first shearing blade and the second shearing blade to reduce the particle size of the concrete semi-finished product, the concrete semi-finished product is sheared and dispersed through the stirring and shearing blade, and the part with the smaller particle size is extracted by wind power generated by the air blower, so that the particle size of the prepared light high-strength concrete is small, the specific surface area is reduced, the void ratio is reduced, the coupling strength is improved, and the quality of the concrete is improved.
Description
Technical Field
The invention relates to the field of concrete, in particular to a preparation method of light high-strength concrete.
Background
In recent years, with the drive of energy-saving policies of buildings, energy-saving technologies and energy-saving materials of buildings have been developed rapidly. Concrete is the most used building material in the building industry, and along with the development of economy and the progress of technology, the requirements of people on the building material are continuously improved, so that the concrete is required to have the requirements of high strength and durability, and the concrete also needs to meet the requirements of light weight and environmental protection. At present, the common concrete which is most used in industrial and civil buildings has heavy weight although the strength (generally 20-30MPa) can basically meet the requirement of building structures. However, at present, common concrete and aerated concrete are both brittle materials, and are easy to generate micro cracks due to shrinkage, even completely damaged, and the light concrete on the market has low strength (generally less than 5MPa), cannot meet the requirements of building structures, and can only be used as non-bearing partition walls or heat insulation materials. In addition, aerated concrete is very brittle and can easily break during transportation and construction.
Therefore, it is urgently needed to prepare concrete with light weight, high strength and anti-cracking function, and the existing concrete is easy to form blocks in the production process, and has large void ratio, low connection strength and poor quality in use.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a preparation method of light high-strength concrete, which comprises the following steps: (1) the aluminum silicate ceramic fiber is used for preventing the concrete from cracking, preventing the macroscopic cracks from expanding and improving the peeling and separating capacity of the concrete for resisting freeze thawing circulation, the assistant is used for increasing the compression and breaking strength of the concrete, improving the antirust performance and the waterproof and anti-seepage performance of the concrete, and having good water reducing performance, workability, plasticity and pumpable effect, liquid nitrogen is introduced into a reaction kettle containing fly ash and water, the interior of the reaction kettle is pressurized, pressure is maintained, the materials in the reaction kettle are sprayed into a charging barrel, part of the liquid nitrogen can enter the interior of fly ash particles with few pores in the pressurizing process, the liquid nitrogen is rapidly gasified in the pressure relieving process, the surface part of the fly ash microsphere structure falls off, the particle size of the falling part is small, the thinned fragments are formed, and the hollow and porous fly ash microsphere structure is effectively reserved in the instant increase of the pores on the surface of the fly ash particles in the process, the concrete can be dispersed in the system as a hollow porous framework, so that the problems of low strength and heavy weight of the existing concrete are solved; (2) the prepared concrete semi-finished product is crushed and refined by using a crushing and refining device, the concrete semi-finished product is put into a storage box from a feeding hole, the concrete semi-finished product is stirred by a rotating stirring shaft and dispersed on a dividing cutter, the concrete semi-finished product is cut and crushed by the rotating dividing cutter, the crushed concrete semi-finished product is sheared by a second shearing blade and conveyed forwards, and falls into a second conveying pipe, the concrete semi-finished product is sheared by a first shearing blade and conveyed forwards into the feeding box, the concrete semi-finished product falls into an inner cavity of a sorting box by a receiving hopper, the stirring shearing blade is driven to rotate by the operation of a stirring motor, an air blower is started, wind power is generated by the operation of the air blower, the rotating stirring shearing blade further shears the concrete semi-finished product and disperses the wind power, and the generated concrete semi-finished product carrying part is discharged from a discharging pipe, the light high-strength concrete is obtained, and the problems that the existing concrete is easy to form blocks in the production process, and when the concrete is used, the void ratio is large, the bonding strength is low, and the quality is poor are solved.
The purpose of the invention can be realized by the following technical scheme:
a preparation method of light high-strength concrete comprises the following components in parts by weight:
8-12 parts of active silicon oxide, 5-7 parts of active aluminum oxide, 35-40 parts of aluminum silicate ceramic fiber, 30-40 parts of modified fly ash, 60-70 parts of shell powder, 2-3 parts of carbon nano tube, 5-7 parts of nano silicon dioxide, 1-2 parts of fatty alcohol-polyoxyethylene ether, 70-80 parts of cement, 50-70 parts of stone, 20-30 parts of ferroferric oxide, 70-90 parts of water, 20-30 parts of an auxiliary agent and 160 parts of sand 130 and an organic material;
the lightweight high-strength concrete is prepared by the following steps:
step one, preparing an auxiliary agent:
s11: weighing the following raw materials in parts by weight: 5-6 parts of steel fiber, 2-3 parts of methacrylate, 2-3 parts of isophorone diisocyanate, 4-5 parts of bisphenol A epoxy resin, 3-4 parts of magnesium oxide, 4-5 parts of ethyl acrylate, 0.4-0.7 part of bupleurum oil, 1-2 parts of triethanolamine, 0.6-0.9 part of sodium hydroxide, 0.4-0.6 part of sodium tripolyphosphate, 0.5-0.8 part of styrylphenol polyoxyethylene ether, 0.1-0.2 part of ammonium persulfate, 0.1-0.2 part of potassium persulfate and 9-12 parts of water;
s12: mixing water, sodium tripolyphosphate, styrylphenol polyoxyethylene ether, steel fiber, methacrylate, ethyl acrylate and triethanolamine, heating to 70-80 ℃, adding ammonium persulfate to react for 20-30min, then adding isophorone diisocyanate, bisphenol A epoxy resin, magnesium oxide, bupleurum oil, sodium hydroxide and potassium persulfate to react for 30-40min under the condition of 80-90 ℃, and mixing and stirring to obtain the auxiliary agent;
step two, preparing modified fly ash:
s21, weighing the following raw materials in parts by weight: 80-100 parts of fly ash and 30-50 parts of deionized water;
s22, placing the fly ash and deionized water in a high-pressure reaction kettle, introducing liquid nitrogen into the reaction kettle at a speed of 6-8 mL/min until the pressure of the reaction kettle reaches 1-2 MPa, carrying out pressure maintaining ultrasonic treatment for 10-20 min, opening a discharge valve of the reaction kettle, spraying the material into a collection charging barrel, transferring the material in the charging barrel into an oven, and drying at 80-90 ℃ for 3-5 h to obtain modified fly ash;
step three, preparing the lightweight high-strength concrete:
s31, mixing the modified fly ash, the carbon nano tube, the nano silicon dioxide, the fatty alcohol-polyoxyethylene ether and water, and uniformly stirring to obtain mixed slurry;
s32, uniformly mixing active silicon oxide, shell powder, active aluminum oxide, aluminum silicate ceramic fiber, cement, pebbles, ferroferric oxide and sand to obtain a mixture, placing the mixture, mixed slurry and an auxiliary agent into a stirrer, and stirring and mixing for 40-60 min under the condition that the rotating speed is 200-300 r/min to obtain a concrete semi-finished product;
s33, putting the concrete semi-finished product into a storage box from a feed inlet of a crushing and refining device, stirring the concrete semi-finished product by a rotating stirring shaft to disperse the concrete semi-finished product on a cutting knife, cutting and crushing the concrete semi-finished product by the rotating cutting knife, shearing the crushed concrete semi-finished product by a second shearing blade and conveying the concrete semi-finished product forwards to a second conveying pipe, shearing the concrete semi-finished product by a first shearing blade and conveying the concrete semi-finished product forwards to the feed box, dropping the concrete semi-finished product into an inner cavity of a sorting box by a receiving hopper, driving the stirring shearing blade to rotate by a stirring motor, starting an air blower to generate wind power by the operation of the air blower, further shearing the concrete semi-finished product by the rotating stirring shearing blade and dispersing the concrete semi-finished product, and discharging part of the concrete semi-finished product carried by the wind power generated by the air blower from a discharge pipe to obtain the light high.
As a further scheme of the invention: the crushing and refining device comprises a crushing mechanism and a screening mechanism, and the crushing mechanism is connected with the screening mechanism;
wherein the crushing mechanism comprises an installation box, a first installation frame, a storage box, a feed inlet, a crushing bin, a first conveying pipe, an installation seat, a second conveying pipe, a transmission box, a first driving motor, a first driving belt wheel, a first driven belt wheel, a second driving motor, a second driving belt wheel, a second driven belt wheel, a driving chain wheel, a driven chain wheel, a first transmission shaft, a first shearing blade, a second transmission shaft, a slitting knife, a second shearing blade, a third transmission shaft and a stirring shaft, the first installation frame is installed at the top of the installation box, the storage box is installed at the top of the first installation frame, the feed inlet is formed at the top of the storage box, the crushing bin is installed at the bottom of the storage box, the first conveying pipe is installed at one side of the bottom of the crushing bin, the bottom of one end, far away from the crushing bin, of the first conveying pipe is communicated to the top of the second conveying pipe, and the second, the transmission case is installed to one side of install bin, top one side of transmission case is connected to on one side of smashing the storehouse.
As a further scheme of the invention: a first driving motor is installed at the top of an inner cavity of the installation box, a first driving belt wheel is sleeved on an output shaft of the first driving motor and connected to a first driven belt wheel through a belt, the first driven belt wheel is sleeved on one end of a first transmission shaft, a first shearing blade is installed at the other end of the first transmission shaft, and the first transmission shaft and the first shearing blade are both located in an inner cavity of a second conveying pipe.
As a further scheme of the invention: the utility model discloses a crushing bin, including install bin, installation case, second driving motor, second drive motor, second driven pulley, drive sprocket, second transmission shaft, second drive pulley, second driven pulley, drive sprocket and drive sprocket, second driven pulley and drive sprocket all cup joint on the one end of second transmission shaft, install the second on the other end of second transmission shaft and cut the leaf, drive sprocket and second are cut and are installed a plurality of branch cutter, a plurality of between the leaf divide the cutter to be located the inner chamber bottom of smashing the storehouse, the second is cut the leaf and is located the inner chamber of first conveyer pipe.
As a further scheme of the invention: the driving sprocket passes through the chain and is connected to driven sprocket, driven sprocket cup joints in one of third transmission shaft and serves, install a plurality of (mixing) shaft on the third transmission shaft, third transmission shaft and a plurality of (mixing) shaft all are located the inner chamber in smashing the storehouse.
As a further scheme of the invention: the screening mechanism comprises a second mounting frame, a discharge box, a feeding box, an air blower, a discharge pipe, a receiving hopper, a support plate, a sorting box, a stirring motor, a discharge valve and a stirring shearing blade, wherein the discharge box and the feeding box are mounted at the top of the second mounting frame, the air blower is mounted at one side, away from the feeding box, of the discharge box, an air inlet of the air blower is positioned in an inner cavity of the discharge box, the discharge pipe is mounted at an air outlet of the air blower, one side, away from the discharge box, of the feeding box is communicated to one end of a second conveying pipe, the receiving hopper is mounted at the top of the inner cavity of the second mounting frame, the bottoms of the discharge box and the feeding box are communicated to inner cavities of the receiving hopper, the bottom of the receiving hopper is connected to the top of the sorting box, the sorting box is penetratingly mounted on the support plate, the support, the bottom of separation box installs the discharge valve, install the stirring on agitator motor's the output shaft and cut the leaf, the stirring is cut the leaf and is located the inner chamber of separation box.
The invention has the beneficial effects that:
(1) the invention relates to a preparation method of lightweight high-strength concrete, which prevents the concrete from cracking and prevents the expansion of macroscopic cracks by using aluminum silicate ceramic fibers, improves the peeling and separating capacity of the concrete for resisting freeze thawing circulation, increases the compression and breaking strength of the concrete by using an auxiliary agent, improves the antirust performance, waterproof and anti-seepage performance of the concrete, has good water reducing performance, workability, plasticity and pumpable effect, and can ensure that part of liquid nitrogen enters fly ash particles with less pores in the pressurizing process by introducing the liquid nitrogen into a reaction kettle containing fly ash and water, pressurizing the interior of the reaction kettle, pressurizing after pressure maintaining, releasing pressure, injecting materials in the reaction kettle into a charging barrel, and leading part of the liquid nitrogen to enter the fly ash particles with less pores in the pressurizing process, rapidly gasifying the liquid nitrogen in the pressure releasing process, leading part of the surface of a fly ash microsphere structure to drop, leading the particle size of the dropped part to be smaller, the process can instantly increase the surface pores of the fly ash particles for fine fragments, and the fly ash particles are just effectively retained as hollow porous fly ash microsphere structures and can be dispersed in a system as hollow porous frameworks, so that the prepared modified fly ash enables the concrete to have the characteristic of light weight;
(2) the invention relates to a preparation method of lightweight high-strength concrete, which comprises the steps of crushing and refining a prepared concrete semi-finished product by using a crushing and refining device, putting the concrete semi-finished product into a storage box from a feed inlet, stirring the concrete semi-finished product by a rotating stirring shaft to disperse the concrete semi-finished product on a dividing cutter, cutting and crushing the concrete semi-finished product by the rotating dividing cutter, shearing and forwards conveying the crushed concrete semi-finished product by a second shearing blade to fall into a second conveying pipe, shearing the concrete semi-finished product by a first shearing blade and forwards conveying the concrete semi-finished product into the feed box, dropping the concrete semi-finished product into an inner cavity of a sorting box by a receiving hopper, driving the stirring and shearing blade to rotate by the operation of a stirring motor, starting an air blower to generate wind power, further shearing and dispersing the concrete semi-finished product by the rotating stirring and shearing blade, wind power generated by the blower carries part of the concrete semi-finished product to be discharged from the discharge pipe, and the lightweight high-strength concrete is obtained; this smash and refine device smashes blocky concrete semi-manufactured goods that makes through the branch cutter in the rubbing crusher structure, first shearing leaf and second shearing leaf, makes its particle diameter reduce, through the stirring shearing leaf of screening mechanism with concrete semi-manufactured goods shear and disperse, produce wind-force through the air-blower and take out the less part of particle diameter wherein, obtain this light high strength concrete, make the light high strength concrete particle diameter of making little, thereby reduce specific surface area, reduce the void fraction, improved joint strength, the quality of concrete has been improved.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view showing the structure of a pulverizing and refining apparatus according to the present invention;
FIG. 2 is a side view of the pulverizing and attenuating apparatus of the present invention;
FIG. 3 is a first perspective view of the shredder mechanism of the present invention;
FIG. 4 is a second perspective view of the shredder mechanism of the present invention;
FIG. 5 is a schematic view showing the internal structure of the crushing mechanism according to the present invention;
FIG. 6 is a coupling view of a first drive shaft and a first cutting blade in accordance with the present invention;
FIG. 7 is a view showing the connection of the slitting knife, the second cutting blade and the third transmission shaft according to the present invention;
FIG. 8 is a view showing the connection between the third driving shaft and the stirring shaft in the present invention;
FIG. 9 is a perspective view of the sifting mechanism of the present invention;
FIG. 10 is a view showing the connection of the stirring motor and the stirring vanes in the present invention.
In the figure: 100. a crushing mechanism; 200. a screening mechanism; 101. installing a box; 102. a first mounting bracket; 103. A material storage box; 104. a feed inlet; 105. a crushing bin; 106. a first delivery pipe; 107. a mounting seat; 108. A second delivery pipe; 109. a transmission case; 110. a first drive motor; 111. a first driving pulley; 112. A first driven pulley; 113. a second drive motor; 114. a second driving pulley; 115. a second driven pulley; 116. a drive sprocket; 117. a driven sprocket; 118. a first drive shaft; 119. a first cutting blade; 120. a second drive shaft; 121. a slitting knife; 122. a second cut leaf; 123. a third drive shaft; 124. A stirring shaft; 201. a second mounting bracket; 202. a discharging box; 203. a feeding box; 204. a blower; 205. A discharge pipe; 206. a receiving hopper; 207. a support plate; 208. a sorting box; 209. a stirring motor; 210. a discharge valve; 211. stirring and shearing the leaves.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1 to 10, this embodiment is a method for preparing a lightweight high-strength concrete, which includes the following components in parts by weight:
8 parts of active silicon oxide, 5 parts of active aluminum oxide, 35 parts of aluminum silicate ceramic fiber, 30 parts of modified fly ash, 60 parts of shell powder, 2 parts of carbon nano tube, 5 parts of nano silicon dioxide, 1 part of fatty alcohol-polyoxyethylene ether, 70 parts of cement, 50 parts of stone, 20 parts of ferroferric oxide, 70 parts of water, 20 parts of auxiliary agent and 130 parts of sand;
the lightweight high-strength concrete is prepared by the following steps:
step one, preparing an auxiliary agent:
s11: weighing the following raw materials in parts by weight: 5 parts of steel fiber, 2 parts of methacrylate, 2 parts of isophorone diisocyanate, 4 parts of bisphenol A epoxy resin, 3 parts of magnesium oxide, 4 parts of ethyl acrylate, 0.4 part of bupleurum oil, 1 part of triethanolamine, 0.6 part of sodium hydroxide, 0.4 part of sodium tripolyphosphate, 0.5 part of styrylphenol polyoxyethylene ether, 0.1 part of ammonium persulfate, 0.1 part of potassium persulfate and 9 parts of water;
s12: mixing water, sodium tripolyphosphate, styrylphenol polyoxyethylene ether, steel fiber, methacrylate, ethyl acrylate and triethanolamine, heating to 70 ℃, adding ammonium persulfate to react for 20min, adding isophorone diisocyanate, bisphenol A epoxy resin, magnesium oxide, bupleurum oil, sodium hydroxide and potassium persulfate, mixing and stirring at 80 ℃ to react for 30min to obtain the assistant;
step two, preparing modified fly ash:
s21, weighing the following raw materials in parts by weight: 80 parts of fly ash and 30 parts of deionized water;
s22, placing the fly ash and deionized water in a high-pressure reaction kettle, introducing liquid nitrogen into the reaction kettle at a speed of 6mL/min until the pressure of the reaction kettle reaches 1MPa, maintaining the pressure, performing ultrasonic treatment for 10min, opening a discharge valve of the reaction kettle, spraying the material into a collecting charging barrel, transferring the material in the charging barrel into an oven, and drying for 3h at the temperature of 80 ℃ to obtain modified fly ash;
step three, preparing the lightweight high-strength concrete:
s31, mixing the modified fly ash, the carbon nano tube, the nano silicon dioxide, the fatty alcohol-polyoxyethylene ether and water, and uniformly stirring to obtain mixed slurry;
s32, uniformly mixing active silicon oxide, shell powder, active aluminum oxide, aluminum silicate ceramic fiber, cement, pebbles, ferroferric oxide and sand to obtain a mixture, placing the mixture, mixed slurry and an auxiliary agent into a stirrer, stirring and mixing for 40min at the rotation speed of 200r/min, and drying to obtain a concrete semi-finished product;
s33, the concrete semi-finished product is put into a storage box 103 from a feed inlet 104 of a crushing and thinning device, the concrete semi-finished product is stirred by a rotating stirring shaft 124 to be dispersed on a cutting knife 121, the concrete semi-finished product is cut and crushed by the rotating cutting knife 121, the crushed concrete semi-finished product is cut by a second cutting blade 122 and is conveyed forwards, the concrete semi-finished product falls into a second conveying pipe 108, the concrete semi-finished product is cut by a first cutting blade 119 and is conveyed forwards into a feed box 203, the concrete semi-finished product falls into an inner cavity of a sorting box 208 through a receiving hopper 206, a stirring cutting blade 211 is driven to rotate by the operation of a stirring motor 209, an air blower 204 is started, the air blower 204 operates to generate wind power, the concrete semi-finished product is further cut and dispersed by the rotating stirring cutting blade 211, and part of the concrete semi-finished product is discharged from a discharge pipe 205 by the wind power generated by the air blower 204, the lightweight high-strength concrete is obtained.
The performance of the lightweight high-strength concrete of example 1 was tested, and the test results were as follows: the strength grade of the concrete reaches C50, the frost resistance grade is F250, the compressive strength is 51MPa, and the flexural strength is 21.9 MPa.
Example 2:
referring to fig. 1 to 10, this embodiment is a method for preparing a lightweight high-strength concrete, which includes the following components in parts by weight:
12 parts of active silicon oxide, 7 parts of active aluminum oxide, 40 parts of aluminum silicate ceramic fiber, 40 parts of modified fly ash, 70 parts of shell powder, 3 parts of carbon nano tube, 7 parts of nano silicon dioxide, 2 parts of fatty alcohol-polyoxyethylene ether, 80 parts of cement, 70 parts of stone, 30 parts of ferroferric oxide, 90 parts of water, 30 parts of auxiliary agent and 160 parts of sand;
the lightweight high-strength concrete is prepared by the following steps:
step one, preparing an auxiliary agent:
s11: weighing the following raw materials in parts by weight: 6 parts of steel fiber, 3 parts of methacrylate, 3 parts of isophorone diisocyanate, 5 parts of bisphenol A epoxy resin, 4 parts of magnesium oxide, 5 parts of ethyl acrylate, 0.7 part of bupleurum oil, 2 parts of triethanolamine, 0.9 part of sodium hydroxide, 0.6 part of sodium tripolyphosphate, 0.8 part of styrylphenol polyoxyethylene ether, 0.2 part of ammonium persulfate, 0.2 part of potassium persulfate and 12 parts of water;
s12: mixing water, sodium tripolyphosphate, styrylphenol polyoxyethylene ether, steel fiber, methacrylate, ethyl acrylate and triethanolamine, heating to 80 ℃, adding ammonium persulfate to react for 30min, adding isophorone diisocyanate, bisphenol A epoxy resin, magnesium oxide, bupleurum oil, sodium hydroxide and potassium persulfate, mixing and stirring at 90 ℃ to react for 40min, and obtaining the auxiliary agent;
step two, preparing modified fly ash:
s21, weighing the following raw materials in parts by weight: 100 parts of fly ash and 50 parts of deionized water;
s22, placing the fly ash and deionized water in a high-pressure reaction kettle, introducing liquid nitrogen into the reaction kettle at a speed of 8mL/min until the pressure of the reaction kettle reaches 2MPa, maintaining the pressure, performing ultrasonic treatment for 20min, opening a discharge valve of the reaction kettle, spraying the material into a collecting material barrel, transferring the material in the material barrel into an oven, and drying for 5h at 90 ℃ to obtain modified fly ash;
step three, preparing the lightweight high-strength concrete:
s31, mixing the modified fly ash, the carbon nano tube, the nano silicon dioxide, the fatty alcohol-polyoxyethylene ether and water, and uniformly stirring to obtain mixed slurry;
s32, uniformly mixing active silicon oxide, shell powder, active aluminum oxide, aluminum silicate ceramic fiber, cement, pebbles, ferroferric oxide and sand to obtain a mixture, placing the mixture, mixed slurry and an auxiliary agent into a stirrer, stirring and mixing for 60min at the rotation speed of 300r/min, and drying to obtain a concrete semi-finished product;
s33, the concrete semi-finished product is put into a storage box 103 from a feed inlet 104 of a crushing and thinning device, the concrete semi-finished product is stirred by a rotating stirring shaft 124 to be dispersed on a cutting knife 121, the concrete semi-finished product is cut and crushed by the rotating cutting knife 121, the crushed concrete semi-finished product is cut by a second cutting blade 122 and is conveyed forwards, the concrete semi-finished product falls into a second conveying pipe 108, the concrete semi-finished product is cut by a first cutting blade 119 and is conveyed forwards into a feed box 203, the concrete semi-finished product falls into an inner cavity of a sorting box 208 through a receiving hopper 206, a stirring cutting blade 211 is driven to rotate by the operation of a stirring motor 209, an air blower 204 is started, the air blower 204 operates to generate wind power, the concrete semi-finished product is further cut and dispersed by the rotating stirring cutting blade 211, and part of the concrete semi-finished product is discharged from a discharge pipe 205 by the wind power generated by the air blower 204, the lightweight high-strength concrete is obtained.
The performance of the lightweight high-strength concrete of example 2 was tested, and the test results were as follows: the strength grade of the concrete reaches C50, the frost resistance grade is F250, the compressive strength is 53MPa, and the flexural strength is 23.1 MPa.
Example 3:
referring to fig. 1-10, the pulverizing and refining apparatus in this embodiment includes a pulverizing mechanism 100 and a sieving mechanism 200, wherein the pulverizing mechanism 100 is connected to the sieving mechanism 200;
wherein, the crushing mechanism 100 comprises an installation box 101, a first installation frame 102, a storage box 103, a feeding hole 104, a crushing bin 105, a first conveying pipe 106, an installation seat 107, a second conveying pipe 108, a transmission box 109, a first driving motor 110, a first driving pulley 111, a first driven pulley 112, a second driving motor 113, a second driving pulley 114, a second driven pulley 115, a driving sprocket 116, a driven sprocket 117, a first transmission shaft 118, a first shearing blade 119, a second transmission shaft 120, a slitting knife 121, a second shearing blade 122, a third transmission shaft 123 and a stirring shaft 124, the first installation frame 102 is installed on the top of the installation box 101, the storage box 103 is installed on the top of the first installation frame 102, the feeding hole 104 is opened on the top of the storage box 103, the crushing bin 105 is installed on the bottom of the storage box 103, the first conveying pipe 106 is installed on one side of the bottom of the crushing bin 105, the bottom of one end of the first conveying pipe 106, which is far away from the crushing bin 105, is communicated to the top of a second conveying pipe 108, the second conveying pipe 108 is penetratingly arranged on an installation seat 107, a transmission box 109 is arranged on one side of the installation box 101, and one side of the top of the transmission box 109 is connected to one side of the crushing bin 105;
a first driving motor 110 is installed at the top of the inner cavity of the installation box 101, a first driving pulley 111 is sleeved on an output shaft of the first driving motor 110, the first driving pulley 111 is connected to a first driven pulley 112 through a belt, the first driven pulley 112 is sleeved on one end of a first transmission shaft 118, a first shearing blade 119 is installed on the other end of the first transmission shaft 118, and the first transmission shaft 118 and the first shearing blade 119 are both located in the inner cavity of the second conveying pipe 108;
a second driving motor 113 is installed at the bottom of the inner cavity of the installation box 101, a second driving pulley 114 is sleeved on an output shaft of the second driving motor 113, the second driving pulley 114 is connected to a second driven pulley 115 through a belt, a driving sprocket 116 is arranged on one side of the second driven pulley 115, the second driven pulley 115 and the driving sprocket 116 are both sleeved on one end of a second transmission shaft 120, a second shearing blade 122 is installed on the other end of the second transmission shaft 120, a plurality of slitting knives 121 are installed between the driving sprocket 116 and the second shearing blade 122, the slitting knives 121 are located at the bottom of the inner cavity of the crushing bin 105, and the second shearing blade 122 is located in the inner cavity of the first conveying pipe 106;
the driving sprocket 116 is connected to a driven sprocket 117 through a chain, the driven sprocket 117 is sleeved on one end of a third transmission shaft 123, a plurality of stirring shafts 124 are installed on the third transmission shaft 123, and the third transmission shaft 123 and the plurality of stirring shafts 124 are both located in an inner cavity of the crushing bin 105;
wherein, the screening mechanism 200 comprises a second mounting frame 201, a discharge box 202, a feed box 203, a blower 204, a discharge pipe 205, a receiving hopper 206, a supporting plate 207, a sorting box 208, a stirring motor 209, a discharge valve 210 and a stirring shear blade 211, the discharge box 202 and the feed box 203 are mounted on the top of the second mounting frame 201, the blower 204 is mounted on one side of the discharge box 202 away from the feed box 203, an air inlet of the blower 204 is positioned in an inner cavity of the discharge box 202, the discharge pipe 205 is mounted on an air outlet of the blower 204, one side of the feed box 203 away from the discharge box 202 is communicated with one end of a second conveying pipe 108, the receiving hopper 206 is mounted on the top of the inner cavity of the second mounting frame 201, the bottoms of the discharge box 202 and the feed box 203 are communicated with the inner cavity of the receiving hopper 206, the bottom of the receiving hopper 206 is connected to the top of the sorting box 208, and the sorting box, backup pad 207 horizontal installation is at the inner chamber middle part of second mounting bracket 201, agitator motor 209 is installed at the top of separation box 208, discharge valve 210 is installed to the bottom of separation box 208, install stirring on agitator motor 209's the output shaft and cut leaf 211, stirring is cut leaf 211 and is located the inner chamber of separation box 208.
Referring to fig. 1-10, the working process of the pulverizing and refining apparatus in this embodiment is as follows:
the method comprises the following steps: starting a first driving motor 110 and a second driving motor 113, wherein the first driving motor 110 operates to drive a first transmission shaft 118 and a first shearing blade 119 to rotate through a first driving pulley 111 and a first driven pulley 112, the second driving motor 113 operates to drive a second transmission shaft 120, a slitting knife 121 and a second shearing blade 122 to rotate through a second driving pulley 114 and a second driven pulley 115, and a third transmission shaft 123 and a stirring shaft 124 are driven to rotate through a driving sprocket 116 and a driven sprocket 117;
step two: the concrete semi-finished product is put into the storage box 103 from the feeding hole 104, the concrete semi-finished product is stirred by the rotating stirring shaft 124 to be dispersed on the dividing cutter 121, the concrete semi-finished product is cut and crushed by the rotating dividing cutter 121, and the crushed concrete semi-finished product is cut by the second cutting blade 122 and is conveyed forwards and falls into the second conveying pipe 108;
step three: the concrete semi-finished product is sheared by the first shearing blade 119 and conveyed forwards into the feeding box 203, and falls into the inner cavity of the sorting box 208 through the receiving hopper 206;
step four: and starting the stirring motor 209, enabling the stirring motor 209 to operate to drive the stirring shearing blades 211 to rotate, starting the air blower 204, enabling the air blower 204 to operate to generate wind power, further shearing and dispersing the concrete semi-finished product by the rotating stirring shearing blades 211, and discharging part of the concrete semi-finished product carried by the wind power generated by the air blower 204 from the discharge pipe 205 to obtain the lightweight high-strength concrete.
The concrete semi-finished products which can be carried and discharged by wind power are small in particle size, light in weight, large in particle size and large in mass, are discharged by opening the discharge valve 210, are returned to the crushing bin 105 to be crushed until being carried and discharged by wind power.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (6)
1. The preparation method of the light high-strength concrete is characterized by comprising the following components in parts by weight:
8-12 parts of active silicon oxide, 5-7 parts of active aluminum oxide, 35-40 parts of aluminum silicate ceramic fiber, 30-40 parts of modified fly ash, 60-70 parts of shell powder, 2-3 parts of carbon nano tube, 5-7 parts of nano silicon dioxide, 1-2 parts of fatty alcohol-polyoxyethylene ether, 70-80 parts of cement, 50-70 parts of stone, 20-30 parts of ferroferric oxide, 70-90 parts of water, 20-30 parts of an auxiliary agent and 160 parts of sand 130 and an organic material;
the lightweight high-strength concrete is prepared by the following steps:
step one, preparing an auxiliary agent:
s11: weighing the following raw materials in parts by weight: 5-6 parts of steel fiber, 2-3 parts of methacrylate, 2-3 parts of isophorone diisocyanate, 4-5 parts of bisphenol A epoxy resin, 3-4 parts of magnesium oxide, 4-5 parts of ethyl acrylate, 0.4-0.7 part of bupleurum oil, 1-2 parts of triethanolamine, 0.6-0.9 part of sodium hydroxide, 0.4-0.6 part of sodium tripolyphosphate, 0.5-0.8 part of styrylphenol polyoxyethylene ether, 0.1-0.2 part of ammonium persulfate, 0.1-0.2 part of potassium persulfate and 9-12 parts of water;
s12: mixing water, sodium tripolyphosphate, styrylphenol polyoxyethylene ether, steel fiber, methacrylate, ethyl acrylate and triethanolamine, heating to 70-80 ℃, adding ammonium persulfate to react for 20-30min, then adding isophorone diisocyanate, bisphenol A epoxy resin, magnesium oxide, bupleurum oil, sodium hydroxide and potassium persulfate to react for 30-40min under the condition of 80-90 ℃, and mixing and stirring to obtain the auxiliary agent;
step two, preparing modified fly ash:
s21, weighing the following raw materials in parts by weight: 80-100 parts of fly ash and 30-50 parts of deionized water;
s22, placing the fly ash and deionized water in a high-pressure reaction kettle, introducing liquid nitrogen into the reaction kettle at a speed of 6-8 mL/min until the pressure of the reaction kettle reaches 1-2 MPa, carrying out pressure maintaining ultrasonic treatment for 10-20 min, opening a discharge valve of the reaction kettle, spraying the material into a collection charging barrel, transferring the material in the charging barrel into an oven, and drying at 80-90 ℃ for 3-5 h to obtain modified fly ash;
step three, preparing the lightweight high-strength concrete:
s31, mixing the modified fly ash, the carbon nano tube, the nano silicon dioxide, the fatty alcohol-polyoxyethylene ether and water, and uniformly stirring to obtain mixed slurry;
s32, uniformly mixing active silicon oxide, shell powder, active aluminum oxide, aluminum silicate ceramic fiber, cement, pebbles, ferroferric oxide and sand to obtain a mixture, placing the mixture, mixed slurry and an auxiliary agent into a stirrer, stirring and mixing for 40-60 min at the rotation speed of 200-300 r/min, and drying to obtain a concrete semi-finished product;
s33, putting the concrete semi-finished product into a storage box (103) from a feed inlet (104) of a crushing and thinning device, stirring the concrete semi-finished product by a rotating stirring shaft (124) to disperse the concrete semi-finished product on a dividing cutter (121), cutting and crushing the concrete semi-finished product by the rotating dividing cutter (121), shearing and forwards conveying the crushed concrete semi-finished product by a second shearing blade (122) to a second conveying pipe (108), shearing and forwards conveying the concrete semi-finished product into a feed box (203) by a first shearing blade (119), dropping the concrete semi-finished product into an inner cavity of a sorting box (208) by a receiving hopper (206), driving a stirring and shearing blade (211) to rotate by the operation of a stirring motor (209), starting an air blower (204), generating wind power by the operation of the air blower (204), further shearing and dispersing the concrete semi-finished product by the rotating stirring and shearing blade (211), wind power generated by the blower (204) carries part of the concrete semi-finished product out of the discharge pipe (205) to obtain the lightweight high-strength concrete.
2. The preparation method of the lightweight high-strength concrete according to claim 1, wherein the crushing and refining device comprises a crushing mechanism (100) and a screening mechanism (200), wherein the crushing mechanism (100) is connected with the screening mechanism (200);
wherein the crushing mechanism (100) comprises an installation box (101), a first installation frame (102), a storage box (103), a feeding hole (104), a crushing bin (105), a first conveying pipe (106), an installation seat (107), a second conveying pipe (108), a transmission box (109), a first driving motor (110), a first driving pulley (111), a first driven pulley (112), a second driving motor (113), a second driving pulley (114), a second driven pulley (115), a driving sprocket (116), a driven sprocket (117), a first transmission shaft (118), a first shearing blade (119), a second transmission shaft (120), a slitting knife (121), a second shearing blade (122), a third transmission shaft (123) and a stirring shaft (124), the first installation frame (102) is installed at the top of the installation box (101), the storage box (103) is installed at the top of the first installation frame (102), feed inlet (104) have been seted up at the top of storage case (103), crushing storehouse (105) are installed to the bottom of storage case (103), first conveyer pipe (106) are installed to the bottom one side of crushing storehouse (105), the one end bottom of smashing storehouse (105) is kept away from in first conveyer pipe (106) communicates to the top of second conveyer pipe (108), second conveyer pipe (108) run through and install on mount pad (107), transmission case (109) are installed to one side of install bin (101), top one side of transmission case (109) is connected to on one side of smashing storehouse (105).
3. The preparation method of the lightweight high-strength concrete according to claim 2, wherein a first driving motor (110) is installed at the top of the inner cavity of the installation box (101), a first driving pulley (111) is sleeved on an output shaft of the first driving motor (110), the first driving pulley (111) is connected to a first driven pulley (112) through a belt, the first driven pulley (112) is sleeved on one end of a first transmission shaft (118), a first shearing blade (119) is installed at the other end of the first transmission shaft (118), and the first transmission shaft (118) and the first shearing blade (119) are both located in the inner cavity of the second conveying pipe (108).
4. The preparation method of the lightweight high-strength concrete according to claim 2, wherein a second driving motor (113) is installed at the bottom of the inner cavity of the installation box (101), a second driving pulley (114) is sleeved on an output shaft of the second driving motor (113), the second driving pulley (114) is connected to a second driven pulley (115) through a belt, a driving sprocket (116) is arranged on one side of the second driven pulley (115), the second driven pulley (115) and the driving sprocket (116) are both sleeved on one end of a second transmission shaft (120), a second shearing blade (122) is installed on the other end of the second transmission shaft (120), a plurality of slitting knives (121) are installed between the driving sprocket (116) and the second shearing blade (122), and the plurality of slitting knives (121) are located at the bottom of the inner cavity of the crushing bin (105), the second cutting blade (122) is located in the lumen of the first delivery tube (106).
5. The preparation method of the lightweight high-strength concrete according to claim 4, wherein the driving sprocket (116) is connected to the driven sprocket (117) through a chain, the driven sprocket (117) is sleeved on one end of a third transmission shaft (123), a plurality of stirring shafts (124) are installed on the third transmission shaft (123), and the third transmission shaft (123) and the plurality of stirring shafts (124) are both located in the inner cavity of the crushing bin (105).
6. The preparation method of the lightweight high-strength concrete according to claim 2, wherein the screening mechanism (200) comprises a second mounting frame (201), a discharge box (202), a feed box (203), a blower (204), a discharge pipe (205), a receiving hopper (206), a support plate (207), a sorting box (208), a stirring motor (209), a discharge valve (210) and a stirring shear blade (211), the discharge box (202) and the feed box (203) are mounted at the top of the second mounting frame (201), the blower (204) is mounted at one side of the discharge box (202) far away from the feed box (203), an air inlet of the blower (204) is positioned in an inner cavity of the discharge box (202), the discharge pipe (205) is mounted at an air outlet of the blower (204), and one side of the feed box (203) far away from the discharge box (202) is communicated to one end of the second conveying pipe (108), the inner chamber top of second mounting bracket (201) is installed and is connect hopper (206), the bottom of ejection of compact case (202) and feeding box (203) all communicates to the inner chamber that connects hopper (206), the top at separation box (208) is connected to the bottom that connects hopper (206), separation box (208) are run through and are installed on backup pad (207), backup pad (207) horizontal installation is at the inner chamber middle part of second mounting bracket (201), agitator motor (209) are installed at the top of separation box (208), discharge valve (210) are installed to the bottom of separation box (208), install stirring on the output shaft of agitator motor (209) and cut leaf (211), stirring is cut leaf (211) and is located the inner chamber of separation box (208).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113772987A (en) * | 2021-08-25 | 2021-12-10 | 陕西正元粉煤灰综合利用有限公司 | Modification method of fly ash and prepared modified fly ash |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104058705A (en) * | 2014-05-29 | 2014-09-24 | 安徽华塑股份有限公司 | Oil-resistant concrete and preparation method thereof |
| CN104058652A (en) * | 2014-05-29 | 2014-09-24 | 安徽华塑股份有限公司 | High-strength concrete and preparation method thereof |
| CN104058651A (en) * | 2014-05-29 | 2014-09-24 | 安徽华塑股份有限公司 | High-toughness concrete and preparation method thereof |
| CN104072039A (en) * | 2014-05-29 | 2014-10-01 | 安徽华塑股份有限公司 | Concrete waste concrete and preparation method thereof |
| CN205668999U (en) * | 2016-05-09 | 2016-11-02 | 孙源兴 | A kind of raw material production device of regenerated aggregate concrete |
| US9908814B1 (en) * | 2017-04-27 | 2018-03-06 | Cement Squared, Inc. | Cementitious compositions and methods of making and using the same |
-
2020
- 2020-09-03 CN CN202010915730.XA patent/CN111960746A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104058705A (en) * | 2014-05-29 | 2014-09-24 | 安徽华塑股份有限公司 | Oil-resistant concrete and preparation method thereof |
| CN104058652A (en) * | 2014-05-29 | 2014-09-24 | 安徽华塑股份有限公司 | High-strength concrete and preparation method thereof |
| CN104058651A (en) * | 2014-05-29 | 2014-09-24 | 安徽华塑股份有限公司 | High-toughness concrete and preparation method thereof |
| CN104072039A (en) * | 2014-05-29 | 2014-10-01 | 安徽华塑股份有限公司 | Concrete waste concrete and preparation method thereof |
| CN205668999U (en) * | 2016-05-09 | 2016-11-02 | 孙源兴 | A kind of raw material production device of regenerated aggregate concrete |
| US9908814B1 (en) * | 2017-04-27 | 2018-03-06 | Cement Squared, Inc. | Cementitious compositions and methods of making and using the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113772987A (en) * | 2021-08-25 | 2021-12-10 | 陕西正元粉煤灰综合利用有限公司 | Modification method of fly ash and prepared modified fly ash |
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Application publication date: 20201120 |