CN112876186A - Machine-sprayed plastering gypsum mortar and preparation process thereof - Google Patents
Machine-sprayed plastering gypsum mortar and preparation process thereof Download PDFInfo
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- CN112876186A CN112876186A CN202110115026.0A CN202110115026A CN112876186A CN 112876186 A CN112876186 A CN 112876186A CN 202110115026 A CN202110115026 A CN 202110115026A CN 112876186 A CN112876186 A CN 112876186A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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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
- C04B2111/00025—Aspects relating to the protection of the health, e.g. materials containing special additives to afford skin protection
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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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
- C04B2111/52—Sound-insulating materials
Abstract
The invention discloses machine-sprayed plastering gypsum mortar and a preparation process thereof, and relates to the field of building materials. The limestone plaster mortar sprayed on the machine and the preparation process thereof comprise the following raw materials by weight: 80-90 parts of gypsum, 2-4 parts of heavy calcium powder, 11-13 parts of cement, 120 parts of river sand 100-doped materials, 0.08-0.12 part of thixotropic agent, 0.1-0.14 part of protein retarder, 3-5 parts of diatomite powder, 8-12 parts of chemical additive and 80-90 parts of clear water. This machine spouts and applies lime stone cream mortar and preparation technology thereof, compare traditional machine and spouted and apply lime stone cream mortar and added the diatomaceous earth powder, the diatomaceous earth powder has powerful breathing humidifying function, mix in the machine and spout and apply lime stone cream mortar, can make the machine spout and apply lime stone cream mortar and have the function of moisture absorption hydrofuge, humidity in can effectual adjustment chamber, still have air-purifying and can play fine fire-retardant because of the diatomaceous earth powder, the effect of sound insulation dehumidification, can let consumers accept widely more, thereby facilitate promotion and use.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to machine-sprayed plastering gypsum mortar and a preparation process thereof.
Background
The gypsum plastering mortar has good working performance, small shrinkage, difficult cracking, good moisture discharging performance and moisture absorption performance and the function of adjusting indoor humidity, and is widely applied to building interior walls, the plastering gypsum mortar in the market at present cannot meet the performance of mechanical spraying in the using process, the traditional mortar with the limestone plaster has poor moisture absorption and moisture discharging effects and cannot well insulate sound and reduce noise, and part of the mortar with the limestone plaster has unpleasant odor and cannot be accepted and accepted by most users, so the mortar is not convenient to popularize and use, is not suitable for the use of the building interior walls, and most of the mortar with the limestone plaster has the defects of uneven stirring of the mortar with the limestone plaster during the using process, uneven mixing of raw materials due to the pursuit of efficiency, and the conditions of cracking, hollowing and alkali reflection can occur, thereby leading to the failure of achieving the ideal effect of mechanically spraying limestone paste mortar.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide machine spraying limestone paste mortar capable of effectively absorbing moisture and removing humidity and insulating sound, reducing noise and purifying air and a preparation process thereof.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme:
the limestone plaster mortar sprayed by the machine is prepared from the following raw materials in parts by weight: 80-90 parts of gypsum, 2-4 parts of heavy calcium powder, 11-13 parts of cement, 120 parts of river sand 100-doped materials, 0.08-0.12 part of thixotropic agent, 0.1-0.14 part of protein retarder, 3-5 parts of diatomite powder, 8-12 parts of chemical additive and 80-90 parts of clear water.
Preferably, the gypsum is any one of natural gypsum and desulfurized gypsum.
Preferably, the cement is any one of portland cement and sulfate cement.
Preferably, the river sand is fine aggregate river sand, and the fineness modulus of the fine aggregate river sand is 2-2.6.
Preferably, the thixotropic agent is a 2680 gypsum thixotropic agent.
A preparation process of machine-sprayed plastering gypsum mortar comprises the following steps:
s1, preparation of raw materials: pouring river sand into a screen mesh for screening, wherein the mesh number of the screen mesh is 40-80 meshes, obtaining the required fine river sand, then putting the obtained fine river sand into an oven, setting the temperature of the oven at 110 ℃, taking out the fine river sand after the required river sand is dried, then placing the fine river sand in a room for cooling for later use, then selecting gypsum, coarse whiting powder, cement, river sand, a thixotropic agent, a protein retarder, diatomite powder and a chemical additive, and placing the selected raw materials for later use.
S2, weighing and proportioning: firstly, the counting of an electronic scale is reset to zero, then the prepared gypsum, heavy calcium powder, cement, river sand, thixotropic agent, protein retarder and diatomite powder are sequentially placed on the electronic scale for weighing, then weighing proportioning is carried out according to the required mass ratio, raw materials with accurate mass are obtained, and then the obtained raw materials are placed for later use.
S3, primary stirring: firstly, adding water into a stirring barrel, then adding gypsum, heavy calcium powder, cement, river sand, a thixotropic agent, a protein retarder and diatomite powder, stirring the powder in the stirring barrel by using a portable electric stirrer at the rotating speed of 300rpm for 2-4 minutes, and then standing for later use.
S4, secondary stirring: adding the chemical additive into the stirring barrel, then stirring the stirring barrel by using a portable electric stirrer, increasing the rotating speed of the portable electric stirrer to 450rpm, stirring for 2-4 minutes, adding clear water while stirring to uniformly mix the plastering gypsum sand and the chemical additive, and then standing for later use.
S5, stirring for three times: after the plastering gypsum sand and the chemical additive are uniformly stirred, the raw materials are mixed and then react in the stirring barrel, so that the temperature in the stirring barrel is increased, the stirring barrel needs to be placed for cooling for 5-10 minutes, then the rotating speed of the portable stirrer is increased to 500rpm, the portable stirrer is inserted into the stirring barrel, the raw materials in the stirring barrel are stirred, clear water is added during stirring, and the plastering gypsum sand can be obtained after uniform stirring.
Preferably, the drying time in S1 is 10 to 20 minutes.
Preferably, the chemical additive in S4 mainly comprises the following raw materials: 0.4-2 parts of guar gum powder, 1.2-4.2 parts of cellulose ether and 0.4-3.0 parts of powdery rosin resin.
Preferably, the consistency of the machine-applied limestone paste mortar obtained in S5 is within a range of 85-100 mm.
(III) advantageous effects
Compared with the prior art, the invention provides machine-sprayed plastering gypsum mortar and a preparation process thereof, and the preparation method has the following beneficial effects:
1. this machine spouts and applies lime stone cream mortar and preparation technology thereof, compare traditional machine and spouted and apply lime stone cream mortar and added the diatomaceous earth powder, the diatomaceous earth powder has powerful breathing humidifying function, mix in the machine and spout and apply lime stone cream mortar, can make the machine spout and apply lime stone cream mortar and have the function of moisture absorption hydrofuge, humidity in can effectual regulation room, still have air-purifying and can play fine fire-retardant because of the diatomaceous earth powder, the effect of sound insulation dehumidification, consequently, can make the machine spout and apply lime stone cream mortar spraying behind the building interior wall, can have fine syllable-dividing noise reduction effect, can let vast consumer accept more, thereby facilitate promotion and use.
2. The limestone spraying and plastering mortar and the preparation process thereof have the advantages that in the preparation process, each raw material is accurately weighed and proportioned, so that the obtained limestone spraying and plastering mortar has better using effect, in the preparation process, the chemical additive contains guar gum powder, cellulose ether and powdery rosin resin, the guar gum powder has water-soluble high polymer, has superior dispersing capacity in cold water and hot water and can not generate caking phenomenon, so that the limestone spraying and plastering mortar is added into the preparation machine plastering mortar and can be effectively placed to be solidified into lumps, the added raw materials cannot be well mixed, the mixing of the limestone spraying and plastering mortar can be effectively promoted, the cellulose ether has suspension stability and water retention effect, and the stability of the limestone spraying and plastering mortar can be increased when the cellulose ether is added into the limestone spraying and plastering mortar, the addition of the powdery rosin resin can increase the viscosity of the limestone paste mortar sprayed and smeared by the machine, thereby increasing the viscosity of the limestone paste mortar sprayed and smeared by the machine, greatly increasing the effect of the function of spraying and smearing the limestone paste mortar by the machine, and being convenient for popularization and use.
3. This machine spouts and smears lime stone cream mortar and preparation technology thereof, at the in-process of preparation, the in-process of adding the raw materials, to inferior stirring and the consistency that adds the clear water adjusting machine and spout and smear lime stone cream mortar, the machine that obtains spouts and smears lime stone cream mortar raw materials and mixes more evenly, thereby can make the effect performance of every raw materials bigger, the machine that can arrive spouts and smears lime stone cream mortar and more stable, thereby can effectually prevent to paint the building interior wall after the machine spouts and smears lime stone cream mortar fracture, the condition of hollowing and anti-alkali appears, greatly increased the practicality and the plasticity of machine spouts and smears lime stone cream mortar.
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.
The first embodiment is as follows: the limestone plaster mortar sprayed by the machine is prepared from the following raw materials in parts by weight: 80 parts of gypsum, 2 parts of heavy calcium powder, 11 parts of cement, 100 parts of river sand, 0.08 part of thixotropic agent, 0.1 part of protein retarder, 3 parts of diatomite powder, 8 parts of chemical additive and 80 parts of clear water, wherein the gypsum is any one of natural gypsum or desulfurized gypsum, the cement is any one of portland cement and sulfate cement, the river sand is fine aggregate river sand, the fineness modulus of the fine aggregate river sand is 2, and the thixotropic agent is 2680 parts of gypsum thixotropic agent.
A preparation process of machine-sprayed plastering gypsum mortar comprises the following steps: step one, preparing raw materials: pouring river sand into a screen mesh for screening, wherein the mesh number of the screen mesh is 40 meshes, obtaining the required fine river sand, then putting the obtained fine river sand into an oven, setting the temperature of the oven at 100 ℃, setting the drying time at 10 minutes, taking out the fine river sand after waiting for the required river sand to be dried, then placing the fine river sand in a room for cooling for later use, then selecting gypsum, coarse whiting powder, cement, river sand, a thixotropic agent, a protein retarder, diatomite powder and a chemical additive, and placing the selected raw materials for later use; step two, weighing and proportioning: firstly, enabling the counting of an electronic scale to return to zero, then sequentially placing prepared gypsum, heavy calcium powder, cement, river sand, thixotropic agent, protein retarder and diatomite powder on the electronic scale for weighing, then weighing and proportioning according to the required mass ratio to obtain raw materials with accurate mass, and then placing the obtained raw materials for later use; step three, primary stirring: firstly, adding water into a stirring barrel, then adding gypsum, heavy calcium powder, cement, river sand, a thixotropic agent, a protein retarder and diatomite powder, stirring the powder in the stirring barrel by using a portable electric stirrer, wherein the rotating speed of the portable electric stirrer is 300rpm, the stirring time is 2 minutes, and then standing for later use; step four, secondary stirring: adding a chemical additive into the stirring barrel, wherein the chemical additive mainly comprises the following raw materials in parts by weight: 0.4 part of guar gum powder, 1.2 parts of cellulose ether and 0.4 part of powdery rosin resin, then stirring the mixture in a stirring barrel by using a portable electric stirrer, increasing the rotating speed of the portable electric stirrer to 450rpm, stirring for 2 minutes, adding clear water while stirring to uniformly mix plastering gypsum sand and a chemical additive, and then standing for later use; step five, stirring for three times: after evenly stirring plastering gypsum sand and chemical additive, because after various raw materials mix, can take place the reaction in the agitator, can make the temperature increase in the agitator, need place the cooling, place 5 minutes, then promote the rotational speed of portable mixer to 500rpm, inject portable mixer into the agitator again, stir the raw materials in the agitator again, add the clear water in the stirring, can obtain plastering gypsum sand after the stirring, the thickness that the machine that obtains sprayed and smeared the lime stone cream mortar is 85 mm.
Example two: the limestone plaster mortar sprayed by the machine is prepared from the following raw materials in parts by weight: 85 parts of gypsum, 3 parts of heavy calcium powder, 12 parts of cement, 110 parts of river sand, 0.1 part of thixotropic agent, 0.12 part of protein retarder, 4 parts of diatomite powder, 10 parts of chemical additive and 85 parts of clear water, wherein the gypsum is any one of natural gypsum or desulfurized gypsum, the cement is any one of portland cement and sulfate cement, the river sand is fine aggregate river sand, the fineness modulus of the fine aggregate river sand is 2.3, and the thixotropic agent is 2680 gypsum thixotropic agent.
A preparation process of machine-sprayed plastering gypsum mortar comprises the following steps: step one, preparing raw materials: pouring river sand into a screen mesh for screening, wherein the mesh number of the screen mesh is 60 meshes, obtaining the required fine river sand, then putting the obtained fine river sand into an oven, setting the temperature of the oven to be 105 ℃, setting the drying time to be 15 minutes, taking out the fine river sand after waiting for the required river sand to be dried, then placing the fine river sand in a room for cooling for later use, then selecting gypsum, coarse whiting powder, cement, river sand, a thixotropic agent, a protein retarder, diatomite powder and a chemical additive, and placing the selected raw materials for later use; step two, weighing and proportioning: firstly, enabling the counting of an electronic scale to return to zero, then sequentially placing prepared gypsum, heavy calcium powder, cement, river sand, thixotropic agent, protein retarder and diatomite powder on the electronic scale for weighing, then weighing and proportioning according to the required mass ratio to obtain raw materials with accurate mass, and then placing the obtained raw materials for later use; step three, primary stirring: firstly, adding water into a stirring barrel, then adding gypsum, heavy calcium powder, cement, river sand, a thixotropic agent, a protein retarder and diatomite powder, stirring the powder in the stirring barrel by using a portable electric stirrer, wherein the rotating speed of the portable electric stirrer is 300rpm, the stirring time is 2 minutes, and then standing for later use; step four, secondary stirring: adding a chemical additive into the stirring barrel, wherein the chemical additive mainly comprises the following raw materials in parts by weight: 1.2 parts of guar gum powder, 2.7 parts of cellulose ether and 1.7 parts of powdery rosin resin, stirring the mixture in a stirring barrel by using a portable electric stirrer, increasing the rotating speed of the portable electric stirrer to 450rpm, stirring for 2 minutes, adding clear water while stirring to uniformly mix plastering gypsum sand and a chemical additive, and standing for later use; step five, stirring for three times: after evenly stirring plastering gypsum sand and chemical additive, because after various raw materials mix, can take place the reaction in the agitator, can make the temperature increase in the agitator, need place the cooling, place 7 minutes, then promote the rotational speed of portable mixer to 500rpm, inject portable mixer into the agitator again, stir the raw materials in the agitator again, add the clear water in the stirring, can obtain plastering gypsum sand after the stirring, the thickness that the machine that obtains spouted and smeared the limestone cream mortar is 95 mm.
Example three: the limestone plaster mortar sprayed by the machine is prepared from the following raw materials in parts by weight: 90 parts of gypsum, 4 parts of heavy calcium powder, 13 parts of cement, 120 parts of river sand, 0.12 part of thixotropic agent, 0.14 part of protein retarder, 5 parts of diatomite powder, 12 parts of chemical additive and 90 parts of clear water, wherein the gypsum is any one of natural gypsum or desulfurized gypsum, the cement is any one of portland cement and sulfate cement, the river sand is fine aggregate river sand, the fineness modulus of the fine aggregate river sand is 2.6, and the thixotropic agent is 2680 gypsum thixotropic agent.
A preparation process of machine-sprayed plastering gypsum mortar comprises the following steps: step one, preparing raw materials: pouring river sand into a screen mesh for screening, wherein the mesh number of the screen mesh is 80 meshes, obtaining the required fine river sand, then putting the obtained fine river sand into an oven, setting the temperature of the oven to be 110 ℃, setting the drying time to be 20 minutes, taking out the fine river sand after waiting for the required river sand to be dried, then placing the fine river sand in a room for cooling for later use, then selecting gypsum, coarse whiting powder, cement, river sand, a thixotropic agent, a protein retarder, diatomite powder and a chemical additive, and placing the selected raw materials for later use; step two, weighing and proportioning: firstly, enabling the counting of an electronic scale to return to zero, then sequentially placing prepared gypsum, heavy calcium powder, cement, river sand, thixotropic agent, protein retarder and diatomite powder on the electronic scale for weighing, then weighing and proportioning according to the required mass ratio to obtain raw materials with accurate mass, and then placing the obtained raw materials for later use; step three, primary stirring: firstly, adding water into a stirring barrel, then adding gypsum, heavy calcium powder, cement, river sand, a thixotropic agent, a protein retarder and diatomite powder, stirring the powder in the stirring barrel by using a portable electric stirrer, wherein the rotating speed of the portable electric stirrer is 300rpm, the stirring time is 2 minutes, and then standing for later use; step four, secondary stirring: adding a chemical additive into the stirring barrel, wherein the chemical additive mainly comprises the following raw materials in parts by weight: 2 parts of guar gum powder, 4.2 parts of cellulose ether and 3 parts of powdery rosin resin, stirring the mixture in a stirring barrel by using a portable electric stirrer, increasing the rotating speed of the portable electric stirrer to 450rpm, stirring for 2 minutes, adding clear water while stirring to uniformly mix plastering gypsum sand and a chemical additive, and standing for later use; step five, stirring for three times: after evenly stirring plastering gypsum sand and chemical additive, because after various raw materials mix, can take place the reaction in the agitator, can make the temperature increase in the agitator, need place the cooling, place 10 minutes, then promote the rotational speed of portable mixer to 500rpm, inject portable mixer into the agitator again, stir the raw materials in the agitator again, add the clear water in the stirring, can obtain plastering gypsum sand after the stirring, the thickness that the machine that obtains spouted and smeared the limestone cream mortar is 100 mm.
It can be seen from this that: compared with the traditional machine-sprayed limestone plaster mortar, diatomite powder is added, and has strong breathing and humidifying functions, and is mixed into the machine-sprayed limestone plaster mortar, so that the machine-sprayed limestone plaster mortar has the functions of moisture absorption and dehumidification, and can effectively adjust the indoor humidity, and the diatomite powder also has the effects of purifying air and playing good flame retardance, sound insulation and dryness removal, so that the machine-sprayed limestone plaster mortar is sprayed after the inner wall of a building, the obtained machine-sprayed limestone paste mortar has better using effect, and in the preparation process, the chemical additive is added to contain guar powder, cellulose ether and powdery rosin resin, the guar powder is a water-soluble high-molecular polymer, has superior dispersing capacity in cold water and hot water, and cannot generate agglomeration, so the machine-sprayed limestone paste mortar is added to the preparation machine-sprayed limestone mortar, can be effectively placed to be coagulated by the machine-sprayed limestone paste mortar, cannot be well mixed, can effectively promote the mixing of the machine-sprayed limestone paste mortar, and has suspension stability and water retention effect, and the stability of the machine-sprayed limestone paste mortar can be improved when the cellulose ether is added to the machine-sprayed limestone paste mortar, the addition of the powdery rosin resin can increase the viscosity of the limestone paste mortar sprayed and smeared by the machine, thereby increasing the viscosity of the limestone paste mortar sprayed and smeared by the machine, greatly increasing the effect of the function of spraying and smearing the limestone paste mortar by the machine, and being convenient for popularization and use.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The limestone paste mortar sprayed by the machine is characterized in that: the feed is prepared from the following raw materials in parts by weight: 80-90 parts of gypsum, 2-4 parts of heavy calcium powder, 11-13 parts of cement, 120 parts of river sand 100-doped materials, 0.08-0.12 part of thixotropic agent, 0.1-0.14 part of protein retarder, 3-5 parts of diatomite powder, 8-12 parts of chemical additive and 80-90 parts of clear water.
2. The machine-plastered limestone mortar of claim 1, wherein: the gypsum is any one of natural gypsum or desulfurized gypsum.
3. The machine-plastered limestone mortar of claim 1, wherein: the cement is any one of Portland cement and sulfate cement.
4. The machine-plastered limestone mortar of claim 1, wherein: the river sand is fine aggregate river sand, and the fineness modulus of the fine aggregate river sand is 2-2.6.
5. The machine-plastered limestone mortar of claim 1, wherein: the thixotropic agent is 2680 gypsum thixotropic agent.
6. The machine-plastered limestone mortar of claim 1, wherein: the chemical additive mainly comprises the following raw materials in parts by weight: 0.4-2 parts of guar gum powder, 1.2-4.2 parts of cellulose ether and 0.4-3.0 parts of powdery rosin resin.
7. A preparation process of machine-sprayed plastering gypsum mortar is characterized by comprising the following steps: the preparation method comprises the following steps:
s1, preparation of raw materials: pouring river sand into a screen mesh for screening, wherein the mesh number of the screen mesh is 40-80 meshes, obtaining the required fine river sand, then putting the obtained fine river sand into an oven, setting the temperature of the oven at 110 ℃, taking out the fine river sand after the required river sand is dried, then placing the fine river sand indoors for cooling for later use, then selecting gypsum, coarse whiting powder, cement, river sand, a thixotropic agent, a protein retarder, diatomite powder and a chemical additive, and placing the selected raw materials for later use;
s2, weighing and proportioning: firstly, enabling the counting of an electronic scale to return to zero, then sequentially placing prepared gypsum, heavy calcium powder, cement, river sand, thixotropic agent, protein retarder and diatomite powder on the electronic scale for weighing, then weighing and proportioning according to the required mass ratio to obtain raw materials with accurate mass, and then placing the obtained raw materials for later use;
s3, primary stirring: firstly, adding water into a stirring barrel, then adding gypsum, heavy calcium powder, cement, river sand, a thixotropic agent, a protein retarder and diatomite powder, stirring the powder in the stirring barrel by using a portable electric stirrer, wherein the rotating speed of the portable electric stirrer is 300rpm, the stirring time is 2-4 minutes, and then standing for later use;
s4, secondary stirring: adding a chemical additive into a stirring barrel, then stirring the stirring barrel by using a portable electric stirrer, increasing the rotating speed of the portable electric stirrer to 450rpm, stirring for 2-4 minutes, stirring while adding clear water to uniformly mix plastering gypsum sand and the chemical additive, and then standing for later use;
s5, stirring for three times: after the plastering gypsum sand and the chemical additive are uniformly stirred, the raw materials are mixed and then react in the stirring barrel, so that the temperature in the stirring barrel is increased, the stirring barrel needs to be placed for cooling for 5-10 minutes, then the rotating speed of the portable stirrer is increased to 500rpm, the portable stirrer is inserted into the stirring barrel, the raw materials in the stirring barrel are stirred, clear water is added during stirring, and the plastering gypsum sand can be obtained after uniform stirring.
8. The preparation process of the machine-sprayed plastering gypsum mortar according to claim 6, which is characterized in that: and the drying time in the S1 is 10-20 minutes.
9. The preparation process of the machine-sprayed plastering gypsum mortar according to claim 6, which is characterized in that: the consistency of the machine-sprayed limestone paste mortar obtained in the step S5 is within the range of 85-100 mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114368930A (en) * | 2022-01-26 | 2022-04-19 | 成都水蓝蓝科技有限公司 | Enhanced thixotropic lubricant and gypsum mortar containing same |
| CN115849846A (en) * | 2022-11-17 | 2023-03-28 | 泰山石膏有限公司 | Surface plastering gypsum and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114368930A (en) * | 2022-01-26 | 2022-04-19 | 成都水蓝蓝科技有限公司 | Enhanced thixotropic lubricant and gypsum mortar containing same |
| CN115849846A (en) * | 2022-11-17 | 2023-03-28 | 泰山石膏有限公司 | Surface plastering gypsum and preparation method thereof |
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