CN109776046B - Preparation process of low-elasticity reinforced foam concrete - Google Patents
Preparation process of low-elasticity reinforced foam concrete Download PDFInfo
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- CN109776046B CN109776046B CN201910097608.3A CN201910097608A CN109776046B CN 109776046 B CN109776046 B CN 109776046B CN 201910097608 A CN201910097608 A CN 201910097608A CN 109776046 B CN109776046 B CN 109776046B
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Abstract
The invention discloses a preparation process of low-elasticity reinforced foam concrete, belonging to the technical field of foam concrete preparation, and the preparation process comprises the following steps: the preparation method comprises the following steps of active mixed material pretreatment, cement slurry preparation, foam foaming, foam slurry mixing and dispersion-assisting slurry mixing, wherein arc self-dispersing particles are added in the mixing process of foam and cement slurry, an ultrasonic high-frequency machine is started, so that the arc self-dispersing particles are dispersed and mixed in the cement slurry, the foaming effect of a foaming agent of foam concrete can be enhanced, the generated foam and the cement slurry are better dispersed and mixed, meanwhile, a connecting elastic fiber pipe is formed after the content in a tough polyurethane elastomer sleeve flows out and is filled in the foam concrete to serve as a connector in the foam concrete, and the toughness and the integrity of the foam concrete are enhanced through the connection and ligament effects of the connecting elastic fiber pipe.
Description
Technical Field
The invention relates to the technical field of foam concrete preparation, in particular to a preparation process of low-elasticity reinforced foam concrete.
Background
The foam concrete is also named as light concrete, and is a novel light heat-insulating material containing a large number of closed air holes, which is formed by fully foaming a foaming agent in a mechanical mode through a foaming system of a foaming machine, uniformly mixing the foam with cement slurry, then carrying out cast-in-place construction or mould forming through a pumping system of the foaming machine and carrying out natural curing. It belongs to a bubble-shaped heat-insulating material and is characterized in that closed foam holes are formed in concrete, so that the concrete is lightened and heat-insulating; the light weight concrete is prepared by preparing foaming agent into foam by a mechanical foaming method, then adding the foam into cement, magnesite and gypsum slurry to form foam slurry, and then curing the foam slurry by natural curing steam.
In the preparation process of the prior foam concrete, a foaming agent is required to be added for a plurality of times to generate foam, a large amount of gas is generated in a chemical combination reaction to enable slurry to generate a large amount of bubbles to become the foam concrete, the production method has higher requirements on production equipment, requires workers to select the time and the dosage of adding the foaming agent for multiple times according to experience and reaction conditions, thereby enhancing the foaming effect of the foaming agent, so the foaming effect is easily influenced by the difference of the addition amount and the addition time of the foaming agent, thereby causing the quality defect of the finally formed foam concrete, and simultaneously, because the foaming agent is added after the slurry is mixed, after being added into the slurry, the slurry is easy to be coated by the slurry, becomes dry powder blocks, cannot be dispersed and mixed with the slurry, so that the foaming effect cannot be well exerted, thereby causing waste of the additional foaming agent and causing adverse effects on the quality of the formed foam concrete.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a preparation process of low-elasticity reinforced foam concrete, which can realize the foaming effect of a foaming agent for enhancing the foam concrete, so that the generated foam and cement slurry are better dispersed and mixed, meanwhile, a connecting elastic fiber pipe is formed after the content in a tough polyurethane elastomer sleeve flows out and is filled in the foam concrete to be used as a connecting object in the foam concrete, and the toughness and the integrity of the foam concrete are enhanced through the connection and ligament action of the connecting elastic fiber pipe.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A preparation process of low-elasticity reinforced foam concrete comprises the following components: the foaming agent, portland cement, an active mixed material, river sand, glass fiber, a naphthalene sulfonate water reducing agent, active silicon dioxide, a thickening agent, high-strength light coarse aggregate, a high-efficiency water reducing agent, water, mortar, common sand and an additive, wherein the preparation process comprises the following steps:
firstly, pretreating an active mixed material, namely adding river sand and glass fiber into a stirrer in sequence, starting the stirrer to uniformly mix the river sand and the glass fiber, and adding water in sections during stirring;
step two, preparing cement slurry, namely adding portland cement, an active mixed material and a thickening agent into a stirrer according to a preset proportion in the stirring process of the stirrer;
step three, foaming, namely adding the prepared foaming agent into a cement foaming machine by using a charging basket, controlling the cement foaming machine, and preparing the foaming agent into foam by using a plunger pump and an air compressor;
step four, mixing foam slurry, adding the cement slurry prepared in the step two into a cement foaming machine, starting a stirring and mixing frame on the cement foaming machine, and stirring and mixing the foam and the cement slurry through the stirring and mixing frame;
and step five, mixing the dispersion-assisting slurry, adding arc self-dispersing particles in the mixing process of the foam and the cement slurry, starting the stirring and mixing frame again, starting the ultrasonic high-frequency machine to disperse and mix the arc self-dispersing particles in the cement slurry to prepare the mixed foam cement slurry, so that the foaming effect of a foaming agent of the foam concrete can be enhanced, the generated foam and the cement slurry are better dispersed and mixed, meanwhile, a connecting elastic fiber pipe is formed after the content in the tough polyurethane elastomer sleeve flows out and is filled in the foam concrete to serve as a connecting object in the foam concrete, and the toughness and the integrity of the foam concrete are enhanced by the connection of the connecting elastic fiber pipe and the ligament action.
Furthermore, the arc-shaped self-dispersing particles mentioned in the fifth dispersion-assisting slurry mixing step include a tough polyurethane elastomer sleeve and porous screen particles, four self-dispersing internal substance leakage holes are drilled in the upper and lower parts of the tough polyurethane elastomer sleeve, the porous screen particles are located in the tough polyurethane elastomer sleeve, hot-melt packaging adhesive is arranged in the self-dispersing internal substance leakage holes, metal micro-sheets are filled in the hot-melt packaging adhesive, the hot-melt packaging adhesive is matched with the self-dispersing internal substance leakage holes, two ends of the hot-melt packaging adhesive are fixedly connected with the inner walls of the self-dispersing internal substance leakage holes, and a closed structure is formed by the hot-melt packaging adhesive and the tough polyurethane elastomer sleeve, so that the foaming effect of a foaming agent of foam concrete is enhanced, and the generated foam and the cement slurry are better dispersed and mixed.
Furthermore, the tough polyurethane elastomer sleeve is filled with a dispersed mixed solution solute, the porous screen particles are uniformly distributed with the dispersed mixed solution solute in the tough polyurethane elastomer sleeve, and the porous screen particles are coated in the dispersed mixed solution solute, so that the porous screen particles are conveniently shaped and distributed in the tough polyurethane elastomer sleeve, and the condition that the porous screen particles are gathered at one position in the tough polyurethane elastomer sleeve is reduced.
Furthermore, a plurality of concentrated dispersing agent particles are filled in the tough polyurethane elastomer sleeve, the concentrated dispersing agent particles are uniformly distributed in the tough polyurethane elastomer sleeve, the concentrated dispersing agent particles are uniformly mixed with a solute of the dispersing mixed liquid in the tough polyurethane elastomer sleeve, and the concentrated dispersing agent particles are convenient for dispersing and mixing foam and cement mortar in the mixing process of the foam and the cement mortar.
Furthermore, fine sieve pores are drilled in the porous sieve particles and are uniformly distributed on the porous sieve particles, so that after the porous sieve particles flow out of the tough polyurethane elastomer sleeve, the porous structure of the porous sieve particles vibrates under the action of an ultrasonic high-frequency machine, fine foam is generated, the foam amount in the foam concrete is increased, the porous structure of the foam concrete is improved, and the quality of the foam concrete is enhanced.
Furthermore, a plurality of nano metal powders are filled in the fine sieve holes and are bonded with the porous sieve particles, so that the porous sieve particles are convenient to vibrate under the action of an ultrasonic high-frequency machine, and the amount of generated foam is increased.
Furthermore, in the step one, in the active mixed material pretreatment process, river sand and glass fiber are sequentially added into the stirrer, and then a naphthalenesulfonate water reducer and active silicon dioxide are added into the stirrer, so that the viscosity of the prepared cement mortar is enhanced conveniently.
Further, the glass fibers are sized to be between twelve and twenty millimeters in length.
Further, the active silicon dioxide is diatomite with the particle size smaller than twenty-five micrometers, and the cement is composite portland cement.
Furthermore, the terpolymer formed by acrylonitrile, butadiene and styrene is doped in the tough polyurethane elastomer sleeve, so that the elasticity of the tough polyurethane elastomer sleeve is improved conveniently, and the content of the tough polyurethane elastomer sleeve is recovered to the original shape after flowing out.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the scheme can realize the foaming effect of the foaming agent for enhancing the foam concrete, so that the generated foam and the cement slurry are better dispersed and mixed, meanwhile, the content in the tough polyurethane elastomer sleeve flows out to form a connecting elastic fiber pipe which is filled in the foam concrete and used as a connecting object in the foam concrete, and the toughness and the integrity of the foam concrete are enhanced through the connection and ligament effects of the connecting elastic fiber pipe.
(2) The tough polyurethane elastomer sleeve is convenient for enhancing the foaming effect of the foaming agent of the foam concrete, so that the generated foam and the cement slurry are better dispersed and mixed.
(3) The tough polyurethane elastomer sleeve is filled with a dispersed mixed solution solute, the porous screen particles are uniformly distributed with the dispersed mixed solution solute in the tough polyurethane elastomer sleeve, and the porous screen particles are coated in the dispersed mixed solution solute, so that the porous screen particles are conveniently shaped and distributed in the tough polyurethane elastomer sleeve, and the condition that the porous screen particles are gathered at one position in the tough polyurethane elastomer sleeve is reduced.
(4) The tough polyurethane elastomer sleeve is also filled with a plurality of dispersant concentrated particles, the dispersant concentrated particles are uniformly distributed in the tough polyurethane elastomer sleeve, the dispersant concentrated particles are uniformly mixed with a dispersion liquid solute in the tough polyurethane elastomer sleeve, and the dispersant concentrated particles are convenient for dispersing and mixing foam and cement mortar in the mixing process of the foam and the cement mortar.
(5) Fine sieve pores are drilled in the porous sieve particles and are uniformly distributed on the porous sieve particles, so that after the porous sieve particles flow outwards in the tough polyurethane elastomer sleeve, the porous structure of the porous sieve particles is vibrated under the action of an ultrasonic high-frequency machine to generate fine foam, the foam amount in the foam concrete is increased, the porous structure of the foam concrete is improved, and the quality of the foam concrete is enhanced.
(6) A plurality of nano metal powders are filled in the fine sieve holes and are bonded with the porous sieve particles, so that the porous sieve particles are convenient to vibrate under the action of an ultrasonic high-frequency machine, and the amount of generated foam is increased.
(7) Step one, in the active mixed material pretreatment process, river sand and glass fiber are sequentially added into a stirrer, and then a naphthalenesulfonate water reducer and active silicon dioxide are added into the stirrer, so that the viscosity of the prepared cement mortar is enhanced conveniently.
(8) The terpolymer formed by acrylonitrile, butadiene and styrene is doped in the tough polyurethane elastomer sleeve, so that the elasticity of the tough polyurethane elastomer sleeve is improved conveniently, and the content of the tough polyurethane elastomer sleeve is recovered to be in the original shape after flowing out.
Drawings
FIG. 1 is a principal flow diagram of the present invention;
FIG. 2 is a cross-sectional view of a curved self-dispersing particle portion of the present invention;
FIG. 3 is a schematic view of the structure at A in FIG. 2;
FIG. 4 is a schematic structural view of a particle portion of a porous screen according to the present invention;
FIG. 5 is a schematic view of the construction of the bonded elastic fiber tube portion of the present invention.
The reference numbers in the figures illustrate:
1 arc self-dispersing particles, 2 tough polyurethane elastomer sleeves, 3 self-dispersing internal matter external leakage holes, 4 hot-melt packaging glue, 5 dispersing mixed solution solute, 6 porous screen particles, 7 dispersing agent concentrated particles, 8 nano metal powder and 9 connecting elastic fiber tubes.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements.
Example 1:
referring to fig. 1, a process for preparing a low-elasticity reinforced foam concrete comprises the following components: the foaming agent, portland cement, an active mixed material, river sand, glass fiber, a naphthalene sulfonate water reducing agent, active silicon dioxide, a thickening agent, high-strength light coarse aggregate, a high-efficiency water reducing agent, water, mortar, common sand and an additive, wherein the preparation process comprises the following steps:
firstly, pretreating an active mixed material, namely adding river sand and glass fibers into a stirrer in sequence, starting the stirrer to uniformly mix the river sand and the glass fibers, adding a naphthalenesulfonate water reducer and active silica into the stirrer to facilitate the enhancement of the viscosity of the prepared cement mortar, wherein the active silica is diatomite with the particle size of less than twenty-five microns, the cement is composite portland cement, water is added in sections during stirring, and the specification of the glass fibers is that the length of the glass fibers is twelve to twenty millimeters;
step two, preparing cement slurry, namely adding portland cement, an active mixed material and a thickening agent into a stirrer according to a preset proportion in the stirring process of the stirrer;
step three, foaming, namely adding the prepared foaming agent into a cement foaming machine by using a charging basket, controlling the cement foaming machine, and preparing the foaming agent into foam by using a plunger pump and an air compressor;
step four, mixing foam slurry, adding the cement slurry prepared in the step two into a cement foaming machine, starting a stirring and mixing frame on the cement foaming machine, and stirring and mixing the foam and the cement slurry through the stirring and mixing frame;
and step five, mixing the dispersion-assisting slurry, adding the arc self-dispersing particles in the mixing process of the foam and the cement slurry, starting the stirring and mixing frame again, and starting the ultrasonic high-frequency machine to disperse and mix the arc self-dispersing particles in the cement slurry to prepare the mixed foam cement slurry.
Referring to fig. 2, the arc self-dispersing particles 1 mentioned in the fifth step of mixing the dispersion-assisting slurry include a tough polyurethane elastomer jacket 2 and porous screen particles 6, four self-dispersing inner discharge holes 3 are drilled in both the upper and lower sides of the tough polyurethane elastomer jacket 2, the porous screen particles 6 are located in the tough polyurethane elastomer jacket 2, a hot-melt packaging adhesive 4 is provided in the self-dispersing inner discharge holes 3, metal micro-pieces are filled in the hot-melt packaging adhesive 4, the hot-melt packaging adhesive 4 is matched with the self-dispersing inner discharge holes 3, and both ends of the hot-melt packaging adhesive 4 are fixedly connected with the inner walls of the self-dispersing inner discharge holes 3 and form a closed structure with the tough polyurethane elastomer jacket 2, when an ultrasonic high-frequency machine transmits an ultrasonic high-frequency signal to the arc self-dispersing particles 1, the nano metal powder 8 on the porous screen particles 6 is under the action of the ultrasonic high-frequency signal to heat the metal micro-pieces in the packaging adhesive 4, so that the hot-melt packaging adhesive 4 on the tough polyurethane elastomer jacket 2, the distorted tough polyurethane elastomer sleeve 2 is recovered after the hot-melt packaging adhesive 4 is melted, the porous screen particles 6 and the dispersing agent concentrated particles 7 in the tough polyurethane elastomer sleeve 2 are ejected from the self-dispersed endoplasmic discharge holes 3, in the moving process of the porous screen particles 6 in cement mortar, the nano metal powder 8 on the porous screen particles 6 vibrates under the action of ultrasonic high-frequency signals, foams are generated in the vibrating process through the porous structure of the porous screen particles 6, the dispersing agent of the dispersing agent concentrated particles 7 is dispersed between the cement mortar and the foams after being ejected, the mixing of the foams and the cement mortar is enhanced, the foaming effect of a foaming agent of foam concrete is conveniently enhanced, the generated foams and cement slurry are better dispersed and mixed, after the content in the tough polyurethane elastomer sleeve 2 flows out, a connecting elastic fiber pipe 9 is formed, the connecting elastic fiber pipe 9 is filled in the foam concrete, as a connector in the foam concrete, the toughness and the integrity of the foam concrete are enhanced by connecting the connection of the elastic fiber pipes and the ligament action.
Referring to fig. 2, the tough polyurethane elastomer jacket 2 is filled with a dispersion solute 5, the porous screen particles 6 are uniformly distributed in the tough polyurethane elastomer jacket 2 with the dispersion solute 5, and the porous screen particles 6 are coated in the dispersion solute 5, so that the porous screen particles 6 are conveniently distributed in the tough polyurethane elastomer jacket 2 in a fixed shape, and the occurrence of the situation that the porous screen particles 6 are gathered in one place in the tough polyurethane elastomer jacket 2 is reduced.
Referring to fig. 2, a plurality of dispersant concentrated particles 7 are filled in the tough polyurethane elastomer jacket 2, the dispersant concentrated particles 7 are uniformly distributed in the tough polyurethane elastomer jacket 2, the dispersant concentrated particles 7 are uniformly mixed with a dispersion solute 5 in the tough polyurethane elastomer jacket 2, the dispersant concentrated particles 7 facilitate the dispersion and mixing of foam and cement mortar in the process of mixing the foam and the cement mortar, the tough polyurethane elastomer jacket 2 is doped with a terpolymer formed by acrylonitrile, butadiene and styrene, the elasticity of the tough polyurethane elastomer jacket 2 is enhanced, and the content of the tough polyurethane elastomer jacket 2 returns to the original shape after flowing out.
Referring to fig. 4, fine mesh openings are chiseled in the porous mesh particles 6, and the fine mesh openings are uniformly distributed on the porous mesh particles 6, so that after the porous mesh particles 6 flow out of the tough polyurethane elastomer sleeve 2, the porous structure of the porous mesh particles is vibrated under the action of an ultrasonic high-frequency machine, fine foam is generated, the foam amount in the foam concrete is increased, and the porous structure of the foam concrete is improved, so that the quality of the foam concrete is enhanced, a plurality of nano metal powder 8 are filled in the fine mesh openings, and the nano metal powder 8 is bonded with the porous mesh particles 6, so that the porous mesh particles 6 are vibrated under the action of the ultrasonic high-frequency machine, and the generated foam amount is increased.
The foaming effect of the foaming agent of the foam concrete is enhanced, the generated foam and cement slurry are better dispersed and mixed, the connecting elastic fiber tube 9 is formed after the content in the tough polyurethane elastomer sleeve 2 flows out, the connecting elastic fiber tube 9 is filled in the foam concrete and is used as a connecting object in the foam concrete, and the toughness and the integrity of the foam concrete are enhanced through the connection and ligament effects of the connecting elastic fiber tube.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (3)
1. A preparation process of low-elasticity reinforced foam concrete is characterized by comprising the following steps: the components of the composition comprise: the foaming agent, portland cement, river sand, glass fiber, a naphthalene sulfonate water reducing agent, active silicon dioxide, a thickening agent, water and arc-shaped self-dispersing particles, and the preparation process comprises the following steps:
step one, adding river sand and glass fiber into a stirrer in sequence, starting the stirrer to uniformly mix the river sand and the glass fiber, adding a naphthalenesulfonate water reducer and active silicon dioxide into the stirrer, and adding water in sections during stirring;
step two, preparing cement slurry, namely adding portland cement, the material prepared in the step one and a propylene organic thickening agent into a stirrer according to a preset proportion in the stirring process of the stirrer;
step three, foaming, namely adding the prepared foaming agent into a cement foaming machine by using a charging basket, controlling the cement foaming machine, and preparing the foaming agent into foam by using a plunger pump and an air compressor;
step four, mixing foam slurry, adding the cement slurry prepared in the step two into a cement foaming machine, starting a stirring and mixing frame on the cement foaming machine, and stirring and mixing the foam and the cement slurry through the stirring and mixing frame;
step five, mixing the dispersion-assisting slurry, adding the arc self-dispersing particles in the mixing process of the foam and the cement slurry, starting the stirring and mixing frame again, and starting the ultrasonic high-frequency machine to disperse and mix the arc self-dispersing particles in the cement slurry to prepare mixed foam cement slurry;
the arc-shaped self-dispersing particles (1) mentioned in the step five in the mixing of the dispersion-assisting slurry comprise a tough polyurethane elastomer sleeve (2) and porous screen particles (6), four self-dispersing internal matter outer discharge holes (3) are formed in the upper side and the lower side of the tough polyurethane elastomer sleeve (2), the porous screen particles (6) are located in the tough polyurethane elastomer sleeve (2), hot-melt packaging glue (4) is arranged in the self-dispersing internal matter outer discharge holes (3), metal micro-sheets are filled in the hot-melt packaging glue (4), the hot-melt packaging glue (4) is matched with the self-dispersing internal matter outer discharge holes (3), and two ends of the hot-melt packaging glue (4) are fixedly connected with the inner walls of the self-dispersing internal matter outer discharge holes (3) and form a closed structure with the tough polyurethane elastomer sleeve (2); the tough polyurethane elastomer sleeve (2) is filled with a dispersed mixed solution solute (5), the porous screen particles (6) are uniformly distributed with the dispersed mixed solution solute (5) in the tough polyurethane elastomer sleeve (2), and the porous screen particles (6) are coated in the dispersed mixed solution solute (5); a plurality of concentrated dispersing agent particles (7) are also filled in the tough polyurethane elastomer sleeve (2), the concentrated dispersing agent particles (7) are uniformly distributed in the tough polyurethane elastomer sleeve (2), and the concentrated dispersing agent particles (7) are uniformly mixed with a dispersed mixed solution solute (5) in the tough polyurethane elastomer sleeve (2) in the same way; fine sieve holes are chiseled in the porous sieve particles (6), and the fine sieve holes are uniformly distributed on the porous sieve particles (6); and a plurality of nano metal powder (8) are filled in the fine sieve pores, and the nano metal powder (8) is adhered with the porous sieve particles (6).
2. The preparation process of the low-elasticity reinforced foam concrete as claimed in claim 1, wherein the preparation process comprises the following steps: the glass fibers are of a gauge length of between twelve and twenty millimeters.
3. The preparation process of the low-elasticity reinforced foam concrete as claimed in claim 1, wherein the preparation process comprises the following steps: the tough polyurethane elastomer sleeve (2) is doped with a terpolymer formed by acrylonitrile, butadiene and styrene.
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| CN104803704A (en) * | 2015-04-03 | 2015-07-29 | 四川雅豪房地产开发有限公司 | Soundproof and heatproof light weight foam concrete |
| CN104803708A (en) * | 2015-04-03 | 2015-07-29 | 四川雅豪房地产开发有限公司 | Preparation process of high-compression-resistance light weight foam concrete |
| KR101740700B1 (en) * | 2017-01-09 | 2017-05-26 | 이호준 | Lightweight foamed concrete with improved insulation and soundproofing |
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