CN114292063A - Lightweight foam concrete and preparation method thereof - Google Patents
Lightweight foam concrete and preparation method thereof Download PDFInfo
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- CN114292063A CN114292063A CN202210044094.7A CN202210044094A CN114292063A CN 114292063 A CN114292063 A CN 114292063A CN 202210044094 A CN202210044094 A CN 202210044094A CN 114292063 A CN114292063 A CN 114292063A
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Abstract
The invention belongs to the technical field of concrete materials, and particularly relates to light foam concrete and a preparation method thereof, wherein the obtained cement slurry is divided into two parts, wherein foaming agent foam is added into one part, then the foaming agent foam is rapidly stirred and stirred to prepare uniform fluid slurry, then the obtained uniform fluid slurry is injected into a forming die, and the forming die is kept still for forming and demoulding to obtain an initial blank; through further processing to current initial blank for the finished product blank surface that obtains is more smooth, receives the protection of outside cement thick liquids, and the inside of finished product blank is difficult to deep diving, and then has carried out the reinforcement improvement of intensity on the basis of having guaranteed the whole light characteristic of blank, and the heat preservation heat-proof quality of blank is good, and life is longer.
Description
Technical Field
The invention belongs to the technical field of concrete materials, and particularly relates to light foam concrete and a preparation method thereof.
Background
The light foam concrete is one of a plurality of members in the light concrete, is combined with foam glass, foam ceramic and foam aluminum to be called as four inorganic foam materials, is a variety with the largest yield and sales volume and the greatest development prospect in the four inorganic foam materials, can be widely used in the highway engineering fields of foundation and bridge abutment back filling, road expansion, filling of mountain steep road sections, replacement and filling of old road and bridge head roadbeds and the like, can also be used for earthing and load reduction of underground large-span structures, filling of cavities and narrow spaces, and is also widely applied to roof slope finding, heat preservation, wall body pouring and the like of buildings.
The invention discloses a light heat-preservation composite foam concrete and a preparation method thereof, wherein the light heat-preservation composite foam concrete is prepared by reacting polypropylene fibers with acrylic acid under the catalysis of benzoyl peroxide to prepare modified polypropylene fibers, then mixing graphene oxide with carboxyl carbon nano tubes, reacting with polyethylene polyamine to prepare modified graphene oxide gel, then mixing the acrylic acid with acrylamide, preparing a base material under the action of a catalyst, mixing the base material with the modified graphene oxide gel for swelling, adding sodium bicarbonate, performing rotary evaporation concentration, performing freeze drying to prepare a composite foaming agent, finally mixing the composite foaming agent with cement, adding a coagulant, a waterproof agent, fly ash, the modified polypropylene fibers and sand, and stirring and mixing. The light heat-insulating composite foam concrete prepared by the invention has smaller density and good heat-insulating property, and the compressive strength of the light heat-insulating composite foam concrete is not much different from that of the common foam concrete.
Among the prior art, light foam concrete is through adding the foamer foam in cement thick liquids's inside, through adding in the make-up machine, stir, make cement thick liquids and foamer foam intensive mixing, form even flow state ground paste, then utilize the forming die shaping, but because light concrete's inside and surface are porous structure, directly use fashioned initial blank, initial blank's intensity is lower, the roughness on surface is relatively poor, and very easy inside infiltration, be used in humid environment, initial blank receives quick erosion easily, and then reduces the off-the-shelf life problem of construction by a wide margin.
Therefore, the invention provides light foam concrete and a preparation method thereof.
Disclosure of Invention
To remedy the deficiencies of the prior art, at least one of the technical problems set forth in the background is addressed.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to light foam concrete which is prepared from the following raw materials in parts by weight:
20-30 parts of cement
75-80 parts of river sand
4-8 parts of fly ash
5-10 parts of water reducing agent
4-5 parts of foaming agent
40-50 parts of water
The water reducing agent is a lignosulfonate water reducing agent; the foaming agent is a compound foaming agent.
A preparation method of light foam concrete is used for preparing the light foam concrete and comprises the following steps:
s1: firstly, adding cement, river sand, fly ash, a water reducing agent and water into a forming machine, stirring to form cement slurry, adding water into a foaming agent for dilution, and then stirring at a high speed to obtain foaming agent foam;
s2: dividing the obtained cement slurry into two parts, adding foaming agent foam into one part, then quickly stirring, and stirring to prepare uniform fluid slurry;
s3: injecting the uniform fluid state slurry obtained in the step S2 into a forming die, standing for forming, and demolding to obtain an initial blank, then injecting cement slurry into the surface of the initial blank to uniformly coat a layer of cement slurry on the surface of the initial blank, and standing for maintenance at room temperature to obtain the light foam concrete;
through further processing to current initial blank, pour the even cement thick liquids of one deck to the outside of initial blank, trowel through the surface of cement thick liquids to initial blank for the finished product blank surface that obtains is more smooth, receives the protection of outside cement thick liquids, and the inside of finished product blank is difficult to go into water deeply, and then has carried out the reinforcement improvement of intensity on the basis of having guaranteed the whole light characteristic of blank, and the heat preservation and insulation properties of blank is good, and life is longer.
Preferably, the forming machine comprises a machine body, a stirring shaft and a conveying belt; the surface of the machine body is provided with a stirring groove; the number of the stirring tanks is two; the motor is fixedly connected to the surface of the machine body at the top of the stirring tank; the interior of each rotating groove is rotatably connected with a stirring shaft, and the stirring shafts are fixedly connected with output shafts of corresponding motors; the surface of the machine body is provided with a conveying groove; a conveying belt is arranged in the conveying groove; the surface of the conveying belt is provided with forming dies which are uniformly distributed; the top of the conveying tank is provided with evenly distributed injection holes, the injection holes are communicated with the inside of the stirring tank through pipelines, and the pipelines are provided with control valves; during operation, the control motor rotates, the motor can drive the corresponding stirring shaft to rotate, the stirring shaft can stir the slurry inside the corresponding stirring tank, the inside of two stirring tanks is respectively prepared to obtain uniform flow state slurry and cement slurry, the conveyer belt is started, the conveyer belt can drive the forming die with the uniformly arranged surface to move, the continuous forming die moves to the inside of the conveyer groove of the machine body, the control valve is controlled to enable the uniform flow state slurry to be injected into the inside of the forming die, then the forming die is conveyed to a set position, static storage is carried out to obtain an initial blank, then the initial blank is transferred to the inside of a larger forming die, pouring forming is carried out again, standing maintenance is carried out to obtain a finished blank, and the performance of the obtained light foam concrete is more excellent through the secondary forming method.
Preferably, the foam boxes are arranged inside the forming die; the top surface of the foam box is designed to be an open structure; the during operation sets up the foam box through the inside at forming die, at first directly pours into the inside of foam box with the thick liquids of even flow state, and static shaping, then seals the foam box, puts into the surface of conveyer belt with this forming die again, carries out the secondary pouring, and the light foam concrete quality that obtains is lighter, and thermal-insulated heat preservation effect is better, and shock-resistant more, is difficult to the fracture problem that appears.
Preferably, the interior of the foam box is fixedly connected with uniformly arranged metal wires, and the metal wires are designed into an interwoven mesh structure; during operation, through setting up the wire, can consolidate the foam box through the wire, the wire can increase the whole toughness of finished product blank simultaneously, when great to the blank size, can reduce the cracked risk of blank.
Preferably, the outer surface and the inner surface of the foam box are both provided with connecting grooves which are uniformly distributed, and the end parts of the metal wires are both positioned in the connecting grooves; the during operation is seted up even groove through the surface at the foam box, when pouring, the thick liquids of even flow state and cement thick liquids all can with fully laminate between the foam box, the inside of the thick liquids of even flow state and cement thick liquids is directly merged into to the wire simultaneously, has guaranteed that the finished product blank is inseparable overall structure.
Preferably, the surface of the conveying belt is provided with vibration grooves which are uniformly distributed; a connecting plate is fixedly connected to the position, close to the conveying belt, inside the machine body; the surface of the connecting plate is fixedly connected with an elastic sheet; the elastic sheet is rotatably connected with a vibration disc relative to the side surface of one side of the vibration groove; during operation, through setting up the flexure strip, when the conveyer belt operation, the flexure strip can drive the surface of vibrations dish contact conveyer belt, because the vibrations groove of evenly arranging is seted up on the surface of conveyer belt, under the elastic action of flexure strip, vibrations dish can strike the tank bottom in vibrations groove repeatedly for vibrations conveyer belt vibrations, the conveyer belt can drive forming die vibrations, promotes the inside thick liquids and the quick automatic level and smooth in cement thick liquids top surface of even flow state of forming die.
Preferably, the number of the conveying belts is two; an electric push rod is fixedly connected between the two conveying belts in the two machine bodies; the top of the electric push rod is fixedly connected with a push plate; the top surface of the push plate is fixedly connected with ejector rods which are uniformly arranged; moving grooves are formed in the bottom surface of the forming die at the positions of the ejector rods; the inner parts of the moving grooves are all connected with moving rods in a sliding manner; the during operation, through setting up electric putter, electric putter can drive the push pedal motion, and the push pedal can drive the ejector pin motion for the ejector pin drives the foam box upward movement of its top position, makes the bottom of foam box be unsettled state, when carrying out cement thick liquids and pouring, can guarantee that the bottom position of foam box has abundant space of pouring.
Preferably, the top surfaces of the ejector rods are provided with guide holes, and the guide holes are communicated with a stirring tank for containing cement slurry through a pipeline; through holes are formed in the surfaces of the moving rods; during operation, through seting up the guide hole on the surface at the ejector pin, cement thick liquids are dry back, and when the in-process that the ejector pin retrieved downwards, control cement thick liquids are leading-in to the guide hole, and then cement thick liquids can lead to the through-hole through the guide hole to fill the carriage release lever position through the through-hole.
Preferably, the surface of the moving rod is fixedly connected with a first air bag at a position close to the bottom surface of the moving rod; the side surface of the moving rod is fixedly connected with a second air bag close to the top surface of the moving rod, and the second air bag is communicated with the first air bag through a pipeline; the second air bag is designed into a ring-shaped structure; the surface of the second air bag is provided with an annular sheet; the annular sheet is designed into an annular wave-shaped structure; the inner surface of the annular sheet is fixedly connected with third air bags which are uniformly arranged; the annular pieces are provided with small holes at the positions of the third air bags, and the small holes are communicated with the corresponding third air bags; the during operation, through setting up first gasbag and second gasbag, when the carriage release lever downstream, the carriage release lever can stop to extrude first gasbag for the inside gas of second gasbag leads back the inside of first gasbag, and then the shrink of second gasbag is favorable to the carriage release lever to break away from cement thick liquids and derives, and the shrink of second gasbag can drive the annular piece shrink simultaneously, and the annular piece can extrude its inside third gasbag, makes aperture blowout gas, promotes the separation of annular piece and cement thick liquids.
The invention has the following beneficial effects:
1. according to the lightweight foam concrete and the preparation method thereof, the existing initial blank is further processed, a layer of uniform cement slurry is poured outside the initial blank, the surface of the initial blank is smoothed through the cement slurry, so that the surface of the obtained finished blank is smoother and is protected by the external cement slurry, the interior of the finished blank is not easy to enter water deeply, further, the strength reinforcement improvement is carried out on the basis of ensuring the overall lightweight property of the blank, the heat insulation performance of the blank is excellent, and the service life is longer.
2. The invention relates to light foam concrete and a preparation method thereof, wherein a foam box and a metal wire are arranged; at first directly pouring into the inside of foam box with the thick liquids of even flow state, static shaping, then seal the foam box, put into the surface of conveyer belt with this forming die again, carry out the secondary pouring, the light foam concrete quality that obtains is lighter, thermal-insulated heat preservation effect is better, and shock-resistant more, be difficult to the fracture problem that appears, can consolidate the foam box through the wire simultaneously, the wire can increase the whole toughness of finished product blank simultaneously, when great to the blank size, can reduce the cracked risk of blank.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a perspective view of the molding machine of the present invention;
FIG. 3 is a front view of the molding machine of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a partial enlarged view of FIG. 4 at B;
FIG. 6 is an enlarged view of a portion of FIG. 5 at C;
FIG. 7 is a cross-sectional view of the travel bar of the present invention;
FIG. 8 is an enlarged view of a portion of FIG. 7 at D;
in the figure: the device comprises a machine body 1, a stirring shaft 2, a conveying belt 3, a motor 4, a forming mold 5, an injection hole 6, a foam box 7, a metal wire 8, a connecting groove 9, a vibration groove 10, a connecting plate 11, an elastic sheet 12, a vibration disc 13, an electric push rod 14, a push plate 15, an ejector rod 16, a moving rod 17, a guide hole 18, a through hole 19, a first air bag 20, a second air bag 21, an annular sheet 22, a third air bag 23 and a small hole 24.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1, the lightweight foam concrete is composed of the following raw materials in parts by weight:
20-30 parts of cement
75-80 parts of river sand
4-8 parts of fly ash
5-10 parts of water reducing agent
4-5 parts of foaming agent
40-50 parts of water
The water reducing agent is a lignosulfonate water reducing agent; the foaming agent is a compound foaming agent.
A preparation method of light foam concrete is used for preparing the light foam concrete and comprises the following steps:
s1: firstly, adding cement, river sand, fly ash, a water reducing agent and water into a forming machine, stirring to form cement slurry, adding water into a foaming agent for dilution, and then stirring at a high speed to obtain foaming agent foam;
s2: dividing the obtained cement slurry into two parts, adding foaming agent foam into one part, then quickly stirring, and stirring to prepare uniform fluid slurry;
s3: injecting the uniform fluid state slurry obtained in the step S2 into a forming die 5, standing for forming, demolding to obtain an initial blank, then injecting cement slurry into the surface of the initial blank to uniformly coat a layer of cement slurry on the surface of the initial blank, and standing for maintenance at room temperature to obtain the light foam concrete;
through further processing to current initial blank, pour the even cement thick liquids of one deck to the outside of initial blank, trowel through the surface of cement thick liquids to initial blank for the finished product blank surface that obtains is more smooth, receives the protection of outside cement thick liquids, and the inside of finished product blank is difficult to go into water deeply, and then has carried out the reinforcement improvement of intensity on the basis of having guaranteed the whole light characteristic of blank, and the heat preservation and insulation properties of blank is good, and life is longer.
Example one
As shown in fig. 2-4, the molding machine according to the embodiment of the present invention includes a machine body 1, a stirring shaft 2, and a conveyor belt 3; the surface of the machine body 1 is provided with a stirring groove; the number of the stirring tanks is two; the motor 4 is fixedly connected to the surface of the machine body 1 at the top of the stirring tank; the interior of each rotating groove is rotatably connected with a stirring shaft 2, and the stirring shafts 2 are fixedly connected with output shafts of corresponding motors 4; a conveying groove is formed in the surface of the machine body 1; a conveying belt 3 is arranged in the conveying groove; the surface of the conveying belt 3 is provided with forming dies 5 which are uniformly arranged; the top of the conveying tank is provided with evenly distributed injection holes 6, the injection holes 6 are communicated with the inside of the stirring tank through pipelines, and the pipelines are provided with control valves; when in work, the motor 4 is controlled to rotate, the motor 4 can drive the corresponding stirring shaft 2 to rotate, the stirring shaft 2 can stir the slurry in the corresponding stirring groove, so that the inner parts of the two stirring tanks are respectively prepared to obtain uniform fluid state slurry and cement slurry, the conveyer belt 3 is started, the conveyer belt 3 can drive the forming molds 5 which are uniformly arranged on the surface of the conveyer belt to move, so that the forming die 5 continuously moves into the conveying groove of the machine body 1, the uniform flow state slurry is injected into the forming die 5 by controlling the control valve, then the forming die 5 is conveyed to a set position for static storage to obtain an initial blank, and then transferring the initial blank into a larger forming die 5, pouring and forming again, standing and maintaining to obtain a finished blank, wherein the performance of the obtained light foam concrete is more excellent by the secondary forming method.
As shown in fig. 4 and 5, the inside of the forming die 5 is provided with a foam box 7; the top surface of the foam box 7 is designed to be an open structure; during operation, through setting up foam box 7 in forming die 5's inside, at first directly pour into foam box 7's inside with the thick liquids of even flow state, static shaping, then seal foam box 7, put into conveyer belt 3's surface with this forming die 5 again, carry out the secondary and pour into a mould, the light foam concrete quality that obtains is lighter, and thermal-insulated heat preservation effect is better, and more shock-resistant, is difficult to the fracture problem that appears.
The interior of the foam box 7 is fixedly connected with metal wires 8 which are uniformly arranged, and the metal wires 8 are designed into an interwoven mesh structure; during operation, through setting up wire 8, can consolidate foam box 7 through wire 8, wire 8 can increase the whole toughness of finished product blank simultaneously, and when great to the blank size, can reduce the cracked risk of blank.
Connecting grooves 9 which are uniformly distributed are formed in the outer surface and the inner surface of the foam box 7, and the end parts of the metal wires 8 are located in the connecting grooves 9; during operation, through seting up even groove 9 on the surface at foam box 7, when pouring, the thick liquids of even flow state and cement thick liquids all can with foam box 7 between fully laminate, the inside of the thick liquids of even flow state and cement thick liquids has directly been merged into to wire 8 simultaneously, has guaranteed that the finished product blank is inseparable overall structure.
As shown in fig. 5, the surface of the conveyor belt 3 is provided with vibration grooves 10 which are uniformly arranged; a connecting plate 11 is fixedly connected to the position, close to the conveying belt 3, in the machine body 1; the surface of the connecting plate 11 is fixedly connected with an elastic sheet 12; the side surfaces of the elastic pieces 12, which are opposite to one side surface of the vibration groove 10, are respectively and rotatably connected with a vibration disc 13; during operation, through setting up flexure strip 12, when conveyer belt 3 operates, flexure strip 12 can drive vibrations dish 13 contact conveyer belt 3's surface, because the vibrations groove 10 of evenly arranging is seted up on conveyer belt 3's surface, under the elastic action of flexure strip 12, vibrations dish 13 can strike the tank bottom in vibrations groove 10 repeatedly for vibrations conveyer belt 3 shakes, and conveyer belt 3 can drive forming die 5 vibrations, promotes the quick automatic level and smooth in inside even flow state thick liquids of forming die 5 and cement thick liquids top surface.
As shown in fig. 4-6, the number of the conveyor belts 3 is two; an electric push rod 14 is fixedly connected between the two conveyor belts 3 in the two machine bodies 1; the top position of the electric push rod 14 is fixedly connected with a push plate 15; the top surface of the push plate 15 is fixedly connected with ejector rods 16 which are uniformly arranged; moving grooves are formed in the bottom surface of the forming die 5 at the positions of the ejector rods 16; the moving rods 17 are connected inside the moving grooves in a sliding manner; during operation, through setting up electric putter 14, electric putter 14 can drive push pedal 15 motion, and push pedal 15 can drive ejector pin 16 motion for ejector pin 16 drives the foam box 7 upward movement of its top position, makes the bottom of foam box 7 be unsettled state, when carrying out cement thick liquids and pouring, can guarantee that the bottom position of foam box 7 has abundant space of pouring.
As shown in fig. 5, the top surfaces of the top rods 16 are all provided with guide holes 18, and the guide holes 18 are communicated with a stirring tank for containing cement slurry through a pipeline; through holes 19 are formed in the surfaces of the moving rods 17; in operation, through opening guide hole 18 on the surface of ejector pin 16, after the cement thick liquids are dried, when the ejector pin 16 retrieves the in-process downwards, control cement thick liquids and lead into guide hole 18, and then the cement thick liquids will lead into through-hole 19 through guide hole 18, and fill the carriage release lever 17 position through-hole 19.
Example two
As shown in fig. 6 to 8, a first comparative example, in which another embodiment of the present invention is: a first air bag 20 is fixedly connected to the surface of the movable rod 17 close to the bottom surface of the movable rod 17; the side surface of the moving rod 17 is fixedly connected with a second air bag 21 close to the top surface of the moving rod 17, and the second air bag 21 is communicated with the first air bag 20 through a pipeline; the second air bag 21 is designed into a ring-shaped structure; the surface of the second air bag 21 is provided with an annular sheet 22; the annular sheet 22 is designed to be of an annular wave-shaped structure; the inner surface of the annular sheet 22 is fixedly connected with third air bags 23 which are uniformly arranged; the annular sheet 22 is provided with small holes 24 at the positions of the third air bags 23, and the small holes 24 are communicated with the corresponding third air bags 23; the during operation, through setting up first gasbag 20 and second gasbag 21, when the carriage release lever 17 downstream, carriage release lever 17 can stop extrudeing first gasbag 20, make the inside gas of second gasbag 21 lead back the inside of first gasbag 20, and then the shrink of second gasbag 21, be favorable to carriage release lever 17 to break away from cement thick liquids and derive, the shrink of second gasbag 21 can drive the shrink of annular piece 22 simultaneously, annular piece 22 can extrude its inside third gasbag 23, make aperture 24 blowout gas, promote the separation of annular piece 22 and cement thick liquids.
When in work, the motor 4 is controlled to rotate, the motor 4 can drive the corresponding stirring shaft 2 to rotate, the stirring shaft 2 can stir the slurry in the corresponding stirring groove, so that the inner parts of the two stirring tanks are respectively prepared to obtain uniform fluid state slurry and cement slurry, the conveyer belt 3 is started, the conveyer belt 3 can drive the forming molds 5 which are uniformly arranged on the surface of the conveyer belt to move, so that the forming die 5 continuously moves into the conveying groove of the machine body 1, the uniform flow state slurry is injected into the forming die 5 by controlling the control valve, then the forming die 5 is conveyed to a set position for static storage to obtain an initial blank, then transferring the initial blank into a larger forming die 5, pouring and forming again, standing and maintaining to obtain a finished blank, wherein the performance of the obtained light foam concrete is more excellent by the secondary forming method; by arranging the foam box 7 in the forming die 5, firstly, the slurry in a uniform flow state is directly poured into the foam box 7, the foam box 7 is statically formed, then, the foam box 7 is sealed, and then, the forming die 5 is placed on the surface of the conveying belt 3 for secondary pouring, so that the obtained light foam concrete is lighter in weight, better in heat insulation and preservation effect, more impact-resistant and not easy to crack; by arranging the metal wire 8, the foam box 7 can be reinforced through the metal wire 8, meanwhile, the metal wire 8 can increase the overall toughness of the finished blank, and the risk of blank fracture can be reduced when the size of the blank is larger; by arranging the connecting groove 9 on the surface of the foam box 7, when pouring is carried out, the uniform flow state slurry and the cement slurry can be fully attached to the foam box 7, and meanwhile, the metal wire 8 is directly blended into the uniform flow state slurry and the cement slurry, so that the finished blank is ensured to be of a compact integral structure; by arranging the elastic sheet 12, when the conveyer belt 3 runs, the elastic sheet 12 can drive the vibration disc 13 to contact the surface of the conveyer belt 3, and as the vibration grooves 10 which are uniformly arranged are formed in the surface of the conveyer belt 3, the vibration disc 13 can repeatedly impact the bottom of the vibration grooves 10 under the elastic action of the elastic sheet 12, so that the vibration conveyer belt 3 vibrates, the conveyer belt 3 can drive the forming die 5 to vibrate, and the top surfaces of uniform flow state slurry and cement slurry in the forming die 5 are promoted to be quickly and automatically leveled; by arranging the electric push rod 14, the electric push rod 14 can drive the push plate 15 to move, the push plate 15 can drive the ejector rod 16 to move, so that the ejector rod 16 drives the foam box 7 at the top of the ejector rod to move upwards, the bottom of the foam box 7 is in a suspended state, and when cement slurry is poured, a sufficient pouring space can be ensured at the bottom of the foam box 7; the surface of the ejector rod 16 is provided with the guide hole 18, after the cement slurry is dried, in the process that the ejector rod 16 is recovered downwards, the cement slurry is controlled to be guided into the guide hole 18, and then the cement slurry is guided into the through hole 19 through the guide hole 18, and the position of the movable rod 17 is filled through the through hole 19; through setting up first gasbag 20 and second gasbag 21, when the carriage release lever 17 downstream, carriage release lever 17 can stop extrudeing first gasbag 20, make the inside gas of second gasbag 21 lead back the inside of first gasbag 20, and then the shrink of second gasbag 21, be favorable to carriage release lever 17 to break away from cement thick liquids and derive, the shrink of second gasbag 21 can drive annular piece 22 simultaneously and shrink, annular piece 22 can extrude its inside third gasbag 23, make aperture 24 blowout gas, promote annular piece 22 and cement thick liquids's separation.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A lightweight foam concrete is characterized in that: the light foam concrete is composed of the following raw materials in parts by weight:
20-30 parts of cement
75-80 parts of river sand
4-8 parts of fly ash
5-10 parts of water reducing agent
4-5 parts of foaming agent
40-50 parts of water
The water reducing agent is a lignosulfonate water reducing agent; the foaming agent is a compound foaming agent.
2. A preparation method of light foam concrete is characterized by comprising the following steps: the production method for producing the lightweight foamed concrete described in claim 1, the production method comprising the steps of:
s1: firstly, adding cement, river sand, fly ash, a water reducing agent and water into a forming machine, stirring to form cement slurry, adding water into a foaming agent for dilution, and then stirring at a high speed to obtain foaming agent foam;
s2: dividing the obtained cement slurry into two parts, adding foaming agent foam into one part, then quickly stirring, and stirring to prepare uniform fluid slurry;
s3: and (3) injecting the uniform fluid state slurry obtained in the step (S2) into a forming die (5), standing for forming, demolding to obtain an initial blank, then injecting cement slurry into the surface of the initial blank to uniformly coat a layer of cement slurry on the surface of the initial blank, and standing and maintaining at room temperature to obtain the light foam concrete.
3. The method for producing a lightweight foamed concrete according to claim 2, wherein: the forming machine comprises a machine body (1), a stirring shaft (2) and a conveying belt (3); the surface of the machine body (1) is provided with a stirring groove; the number of the stirring tanks is two; the surface of the machine body (1) is fixedly connected with a motor (4) at the top of the stirring tank; the interior of each rotating groove is rotatably connected with a stirring shaft (2), and the stirring shafts (2) are fixedly connected with output shafts of corresponding motors (4); the surface of the machine body (1) is provided with a conveying groove; a conveying belt (3) is arranged in the conveying groove; the surface of the conveying belt (3) is provided with forming dies (5) which are uniformly arranged; evenly arranged injection holes (6) are formed in the top of the conveying groove, the injection holes (6) are communicated with the inside of the stirring groove through pipelines, and control valves are arranged at the positions of the pipelines.
4. The method for producing a lightweight foamed concrete according to claim 3, wherein: foam boxes (7) are arranged in the forming die (5); the top surface of the foam box (7) is designed to be an open structure.
5. The method for producing a lightweight foamed concrete according to claim 4, wherein: the foam box (7) is fixedly connected with metal wires (8) which are uniformly arranged, and the metal wires (8) are designed into an interwoven mesh structure.
6. The method for producing a lightweight foamed concrete according to claim 5, wherein: the outer surface and the inner surface of the foam box (7) are provided with connecting grooves (9) which are uniformly arranged, and the end parts of the metal wires (8) are located in the connecting grooves (9).
7. The method for producing a lightweight foamed concrete according to claim 2, wherein: the surface of the conveying belt (3) is provided with vibration grooves (10) which are uniformly distributed; a connecting plate (11) is fixedly connected to the position, close to the conveying belt (3), in the machine body (1); the surface of the connecting plate (11) is fixedly connected with an elastic sheet (12); the elastic sheet (12) is rotatably connected with a vibration disc (13) relative to one side surface of the vibration groove (10).
8. The method for producing a lightweight foamed concrete according to claim 6, wherein: the number of the conveying belts (3) is two; an electric push rod (14) is fixedly connected between the two conveyer belts (3) in the two machine bodies (1); the top of the electric push rod (14) is fixedly connected with a push plate (15); the top surface of the push plate (15) is fixedly connected with ejector rods (16) which are uniformly arranged; moving grooves are formed in the bottom surface of the forming die (5) at the positions of the ejector rods (16); the inner parts of the moving grooves are all connected with moving rods (17) in a sliding manner.
9. The method for producing a lightweight foamed concrete according to claim 8, wherein: guide holes (18) are formed in the top surfaces of the ejector rods (16), and the guide holes (18) are communicated with a stirring tank for containing cement slurry through a pipeline; through holes (19) are formed in the surfaces of the moving rods (17).
10. The method for producing a lightweight foamed concrete according to claim 9, wherein: a first air bag (20) is fixedly connected to the surface of the movable rod (17) close to the bottom surface of the movable rod (17); the side surface of the moving rod (17) is fixedly connected with a second air bag (21) close to the top surface of the moving rod (17), and the second air bag (21) is communicated with the first air bag (20) through a pipeline; the second air bag (21) is designed into a ring-shaped structure; the surface of the second air bag (21) is provided with an annular sheet (22); the annular sheet (22) is designed into an annular wave-shaped structure; the inner surface of the annular sheet (22) is fixedly connected with third air bags (23) which are uniformly arranged; the annular sheet (22) is provided with small holes (24) at the positions of the third air bags (23), and the small holes (24) are communicated with the corresponding third air bags (23).
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| CN202210044094.7A CN114292063B (en) | 2022-01-14 | 2022-01-14 | Lightweight foam concrete and preparation method thereof |
| CN202211366814.8A CN115745659A (en) | 2022-01-14 | 2022-01-14 | Preparation method of light foam concrete |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936936A (en) * | 2012-11-27 | 2013-02-20 | 中国建筑股份有限公司 | Decoration and heat preservation integrated light-weight concrete plate and production method thereof |
| CN103467130A (en) * | 2013-08-29 | 2013-12-25 | 昆山生态屋建筑技术有限公司 | Fabrication technology for foam concrete crust member |
| CN207292492U (en) * | 2017-09-08 | 2018-05-01 | 焦文娟 | Homogeneous oscillation device is used in a kind of bottled powder medicine production |
| CN109822734A (en) * | 2019-02-28 | 2019-05-31 | 河海大学常州校区 | A kind of foam concrete preparation facilities based on automated productin line |
| CN113232159A (en) * | 2021-04-20 | 2021-08-10 | 肖文强 | Commercial concrete mixing and conveying integrated system |
-
2022
- 2022-01-14 CN CN202210044094.7A patent/CN114292063B/en active Active
- 2022-01-14 CN CN202211366814.8A patent/CN115745659A/en active Pending
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| CN102936936A (en) * | 2012-11-27 | 2013-02-20 | 中国建筑股份有限公司 | Decoration and heat preservation integrated light-weight concrete plate and production method thereof |
| CN103467130A (en) * | 2013-08-29 | 2013-12-25 | 昆山生态屋建筑技术有限公司 | Fabrication technology for foam concrete crust member |
| CN207292492U (en) * | 2017-09-08 | 2018-05-01 | 焦文娟 | Homogeneous oscillation device is used in a kind of bottled powder medicine production |
| CN109822734A (en) * | 2019-02-28 | 2019-05-31 | 河海大学常州校区 | A kind of foam concrete preparation facilities based on automated productin line |
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| CN114292063B (en) | 2023-05-30 |
| CN115745659A (en) | 2023-03-07 |
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