CN111777395A - Formula, process and application for producing plastering mortar by using citric acid gypsum - Google Patents

Formula, process and application for producing plastering mortar by using citric acid gypsum Download PDF

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CN111777395A
CN111777395A CN202010699754.6A CN202010699754A CN111777395A CN 111777395 A CN111777395 A CN 111777395A CN 202010699754 A CN202010699754 A CN 202010699754A CN 111777395 A CN111777395 A CN 111777395A
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mortar
parts
citric acid
formula
acid gypsum
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赵开磊
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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
    • 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
    • C04B2111/00017—Aspects relating to the protection of the environment
    • 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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials
    • 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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention relates to the field of building materials, in particular to a formula, a process and application for producing plastering mortar by using citric acid gypsum. A formula for producing plastering mortar by using citric acid gypsum comprises bottom mortar and surface mortar, wherein the formula of the bottom mortar comprises the following components: citric acid gypsum: 40-80 parts of supporting aggregate: 10-20 parts of composite water-retaining agent, 0.1-1 part of retarder, 10-20 parts of triple superphosphate, 0.2-1 part of polypropylene fiber and 1-10 parts of tourmaline micropowder; the formula of the surface mortar comprises the following steps: 10-90 parts of citric acid gypsum, 10-90 parts of reinforcing construction auxiliary materials, 0.1-1 part of composite water-retaining agent, 0.05-0.5 part of retarder, 0.5-3 parts of light calcium and 1-10 parts of tourmaline micropowder. The citric acid gypsum is used as a raw material, so that the waste is changed into valuable, the putty coating process is omitted, manpower and material resources are saved, the decoration effect is better, and the problems of cracking, falling, bulging, powder removal, alkali removal and the like can be avoided.

Description

Formula, process and application for producing plastering mortar by using citric acid gypsum
Technical Field
The invention relates to the field of building materials, in particular to a formula, a process and application for producing plastering mortar by using citric acid gypsum.
Background
The citric acid gypsum is an industrial waste residue produced when sulfuric acid is used for acidolysis of citric acid in the process of producing the citric acid. Its main component is calcium sulfate dihydrate, and every 1 ton of citric acid can be used for producing 2.4 tons of citric acid gypsum. Compared with natural gypsum, the citric acid waste residue gypsum has the advantages of good fineness, high purity and acid and mycelium participation, and the dosage of additives can be greatly reduced. The citric acid gypsum is used for replacing natural gypsum, accords with national industrial policies, can achieve the purposes of reducing emission and utilizing waste, is beneficial to environmental protection, can create certain economic benefit, and has better social benefit. In the indoor building construction, the prior art is to coat cement mortar on the outer layer of the brick body, coat plastering mortar on the outer layer of the cement, and coat putty on the outer layer of the mortar, the process is complicated, and the problems of moisture absorption and falling off, cracks, peeling, powder removal, alkali removal, bulging and the like of the wall skin are easy to occur.
Disclosure of Invention
The plastering mortar prepared by the formula and the method changes the citric acid gypsum into valuable materials, saves a putty coating process during indoor building construction, saves manpower and material resources, has better decoration effect, and does not have the problems of wall skin falling, wall skin crack, bulging, powder removal, alkali rising and the like.
In order to solve the problems of the prior art, the invention discloses a formula for producing plastering mortar by utilizing citric acid gypsum, which comprises bottom layer mortar and surface layer mortar,
the bottom layer mortar comprises the following components in percentage by weight: citric acid gypsum: 40-80 parts of supporting aggregate: 10-20 parts of composite water-retaining agent, 0.1-1 part of retarder, 10-20 parts of triple superphosphate, 0.2-1 part of polypropylene fiber and 1-10 parts of tourmaline micropowder;
the formula of the surface mortar comprises the following components in percentage by weight: 10-90 parts of citric acid gypsum, 10-90 parts of reinforcing construction auxiliary materials, 0.1-1 part of composite water-retaining agent, 0.05-0.5 part of retarder, 0.5-3 parts of light calcium and 1-10 parts of tourmaline micropowder.
Preferably, the support aggregate is: one or more of vitrified micro bubbles, river sand, quartz sand, expanded perlite, light calcium carbonate, heavy calcium carbonate or talcum powder.
Preferably, the water-retaining agent is hydroxypropyl methyl cellulose and one or two of cellulose ether and thixotropic agent.
Preferably, the reinforcing construction auxiliary material comprises one or a combination of two of calcium hydroxide, heavy calcium carbonate or talcum powder.
Preferably, the fineness of the tourmaline micropowder is 1250 mu.
Preferably, the formulation composition of the bottom layer mortar is (by weight): citric acid gypsum: 60-70 parts of supporting aggregate: 10-15 parts of composite water-retaining agent, 0.3-0.7 part of retarder, 10-15 parts of triple superphosphate, 0.5-1 part of polypropylene fiber and 2-6 parts of tourmaline micropowder;
the formula of the surface mortar comprises the following components in percentage by weight: 40-70 parts of citric acid gypsum, 40-70 parts of reinforcing construction auxiliary materials, 0.3-0.7 part of composite water-retaining agent, 0.1-0.2 part of retarder, 0.6-2 parts of light calcium and 2-6 parts of tourmaline micropowder.
A process for producing plastering mortar by using citric acid gypsum comprises the following steps:
(1) putting the materials except the support aggregate in the bottom layer mortar formula into a stirrer according to the mass fraction ratio, stirring for 3-5min, adding the support aggregate into the stirrer, fully mixing the materials in the stirrer for 5-10min, and packaging the uniformly mixed powder to obtain bottom layer mortar;
(2) and (3) putting the materials except the reinforcing construction auxiliary materials in the surface layer mortar formula into a stirrer according to the mass fraction ratio, stirring for 3-5min, adding the reinforcing construction auxiliary materials into the stirrer, stirring for 5-10min, fully mixing the materials, and packaging the uniformly mixed powder to obtain the surface layer mortar.
Preferably, when the bottom layer mortar and the surface layer mortar are prepared, the rotating speed of the stirrer is 20-30 r/min.
The application of the plastering mortar produced by using the citric acid gypsum comprises the following steps:
(1) adding water into the bottom layer mortar for blending, coating the bottom layer mortar on the surface of a brick body, wherein the coating thickness is about 0.5-5cm, and standing and solidifying;
(2) and adding water into the surface layer mortar for blending, coating the surface layer mortar on the surface of the bottom layer mortar to a coating thickness of about 1-3mm, and standing for solidification.
Preferably, the surface layer mortar can be coated for 1-2 times, and after the coating material is solidified at the last time, the next coating is carried out.
The invention has the beneficial effects that:
1. energy conservation and environmental protection, and changes waste into valuable. The citric acid gypsum prepared from industrial waste residues produced in the acidolysis of citric acid by sulfuric acid is used as a raw material, and 2.4 tons of citric acid gypsum can be produced per 1 ton of citric acid, so that the yield of the citric acid gypsum is huge, and the recycling of the citric acid gypsum accords with the national industrial policy of energy conservation and emission reduction. Compared with natural gypsum, desulfurized gypsum and phosphogypsum, the citric acid gypsum has the advantages of finer granularity, higher purity, better whiteness and better product performance.
2. The product performance is excellent. The mortar prepared by the formula and the preparation process is divided into bottom mortar and surface mortar, the bottom mortar can be directly coated on the surfaces of building materials such as building bricks and cement, and the mortar has wide application range and strong adhesion; because the tourmaline micropowder component is added into the bottom layer mortar and the surface layer mortar, negative oxygen ions can be continuously emitted outwards after the mortar is coated, and harmful substances such as formaldehyde in a room can be adsorbed. The gypsum building material is a porous material, so that moisture can be absorbed when the indoor humidity is high, moisture can be released from pores when the indoor humidity is low, and the indoor humidity can be automatically adjusted. Meanwhile, the gypsum building material also has good fire resistance, when a fire disaster occurs, the temperature can be continuously increased on the basis of 140 ℃ of the decomposition temperature after the continuous crystal water is completely decomposed, a large amount of water vapor generated in the decomposition process has a barrier effect on the spread of flame, and precious fire fighting time can be won.
3. The process is saved. When the mortar prepared by the method is constructed, the bottom layer mortar is firstly coated on the surface of a brick body, and after the bottom layer mortar is solidified, the surface layer mortar is coated on the surface of the bottom layer mortar, and after the surface layer mortar is solidified, the mortar is prepared. Compared with the traditional indoor wall construction, the method saves the procedure of putty painting, reduces the expenditure of manpower and materials, and can also obtain better construction effect.
Detailed Description
The present invention will be further described below. The following examples are merely intended to more clearly illustrate the structure of the present invention.
The first embodiment is as follows:
1. putting 63.5 parts of citric acid gypsum, 0.2 part of composite water-retaining agent, 0.08 part of retarder, 13 parts of triple superphosphate, 0.4 part of polypropylene fiber and 3 parts of tourmaline micropowder into a stirrer, stirring for 3-5min, adding 19.82 parts of support aggregate into the stirrer, uniformly mixing with other materials for 5-10min, and packaging the uniformly mixed powder to obtain bottom layer mortar;
2. adding 10 parts of citric acid gypsum, 0.1 part of water-retaining agent, 0.5 part of retarder, 0.5 part of light calcium and 1 part of tourmaline micropowder into a stirrer, stirring for 3-5min, adding 87.9 parts of reinforcing construction auxiliary materials into the stirrer, stirring for 5-10min to uniformly mix the materials, and packaging the uniformly mixed powder to obtain surface mortar;
3. (1) adding water into the bottom layer mortar for blending, coating the bottom layer mortar on the surface of a brick body, wherein the coating thickness is about 2cm, and standing and solidifying;
(2) and adding water into the surface layer mortar for blending, coating the surface layer mortar on the surface of the bottom layer mortar, wherein the coating thickness is about 1mm, standing and solidifying, and repeating the coating for 2 times.
Tests show that after the formula process is adopted to coat the surface of a wall, the tensile bonding strength is 0.40MPa, the compressive strength is 3.9MPa, and the surface appearance state is as follows: slightly rough, negative oxygen ion test (100 days later, counts/m)3)：890。
Example two:
1. putting 55 parts of citric acid gypsum, 0.3 part of composite water-retaining agent, 0.1 part of retarder, 14 parts of triple superphosphate, 0.6 part of polypropylene fiber and 10 parts of tourmaline micropowder into a stirrer, stirring for 3-5min, adding 20 parts of support aggregate into the stirrer, uniformly mixing the materials for 5-10min, and packaging the uniformly mixed powder to prepare bottom-layer mortar;
2. adding 75 parts of citric acid gypsum, 0.6 part of composite water-retaining agent, 0.2 part of retarder, 2.5 parts of light calcium and 10 parts of tourmaline micropowder into a stirrer, stirring for 3-5min, adding 11.7 parts of reinforcing construction auxiliary materials into the stirrer, stirring for 5-10min to uniformly mix the materials, and packaging the uniformly mixed powder to obtain the surface mortar.
3. (1) adding water into the bottom layer mortar for blending, coating the bottom layer mortar on the surface of a brick body, wherein the coating thickness is about 5cm, and standing and solidifying;
(2) and adding water into the surface layer mortar for blending, coating the surface layer mortar on the surface of the bottom layer mortar for one time, wherein the coating thickness is about 2mm, and standing and solidifying.
Tests show that after the formula process is adopted to coat the surface of a wall, the tensile bonding strength is 0.38MPa, the compressive strength is 3.7MPa, and the surface appearance state is as follows: slightly rough, negative oxygen ion test (100 days later, counts/m)3)：3590。
Example three:
1. putting 68 parts of citric acid gypsum, 0.7 part of composite water-retaining agent, 0.2 part of retarder, 15 parts of triple superphosphate, 0.8 part of polypropylene fiber and 5 parts of tourmaline micropowder into a stirrer, stirring for 3-5min, adding 10.3 parts of support aggregate into the stirrer, uniformly mixing the materials for 5-10min, and packaging the uniformly mixed powder to prepare bottom-layer mortar;
2. adding 50 parts of citric acid gypsum, 0.4 part of water-retaining agent, 0.15 part of retarder, 1 part of light calcium and 7 parts of tourmaline micropowder into a stirrer, stirring for 3-5min, adding 41.45 parts of reinforcing construction auxiliary materials into the stirrer, stirring for 5-10min to uniformly mix the materials, and packaging the uniformly mixed powder to obtain the surface mortar.
3. (1) adding water into the bottom layer mortar for blending, coating the bottom layer mortar on the surface of a brick body, wherein the coating thickness is about 4cm, and standing and solidifying;
(2) and adding water into the surface layer mortar for blending, coating the surface layer mortar on the surface of the bottom layer mortar, wherein the coating thickness is about 2mm, and standing and solidifying.
Tests show that after the formula process is adopted to coat the surface of a wall, the tensile bonding strength is 0.47MPa, the compressive strength is 4.6MPa, and the surface appearance state is as follows: fine and smooth, negative oxygen ion test (100 days later, one/m)3)：2890。
Example four:
(1) putting 70 parts of citric acid gypsum, 0.5 part of water-retaining agent, 0.15 part of retarder, 12 parts of triple superphosphate, 0.5 part of polypropylene fiber and 5 parts of tourmaline micropowder into a stirrer, stirring for 3-5min, adding 11.85 parts of support aggregate into the stirrer, uniformly mixing the materials for 5-10min, and packaging the uniformly mixed powder to prepare bottom layer mortar;
(2) adding 40 parts of citric acid gypsum, 0.2 part of water-retaining agent, 0.15 part of retarder, 1 part of light calcium and 7 parts of tourmaline micropowder into a stirrer, stirring for 3-5min, adding 51.65 parts of reinforcing construction auxiliary materials into the stirrer, stirring for 5-10min to uniformly mix the materials, and packaging the uniformly mixed powder to obtain the surface mortar.
3. (1) adding water into the bottom layer mortar for blending, coating the bottom layer mortar on the surface of a brick body, wherein the coating thickness is about 3cm, and standing and solidifying;
(2) and adding water into the surface layer mortar for blending, coating the surface layer mortar on the surface of the bottom layer mortar in two times, wherein the coating thickness is about 3 mm.
Tests show that after the formula process is adopted to coat the surface of a wall, the tensile bonding strength is 0.47MPa, the compressive strength is 4.5MPa, and the surface appearance state is as follows: fine and smooth, negative oxygen ion test (100 days later, one/m)3)：2570。
The data show that the product performance and the construction effect of the formulas and the processes used in the third and fourth embodiments are good, and the coating times of the surface layer mortar have no obvious difference under the condition of consistent total coating thickness.
The invention has the beneficial effects that:
1. energy conservation and environmental protection, and changes waste into valuable. The citric acid gypsum prepared from industrial waste residues produced in the acidolysis of citric acid by sulfuric acid is used as a raw material, and 2.4 tons of citric acid gypsum can be produced per 1 ton of citric acid, so that the yield of the citric acid gypsum is huge, and the recycling of the citric acid gypsum accords with the national industrial policy of energy conservation and emission reduction. Compared with natural gypsum, desulfurized gypsum and phosphogypsum, the citric acid gypsum has the advantages of finer granularity, higher purity, better whiteness and better product performance.
2. The product performance is excellent. The mortar prepared by the formula and the preparation process is divided into bottom mortar and surface mortar, the bottom mortar can be directly coated on the surfaces of building materials such as building bricks, cement, lime and the like, and the mortar has wide application range and strong adhesion; because the tourmaline micropowder component is added into the mortar, the tourmaline micropowder can be continuously emitted outwards after the mortar is coated, and harmful substances such as formaldehyde in a room can be adsorbed. The gypsum building material is a porous material, so that moisture can be absorbed when the indoor humidity is high, moisture can be released from pores when the indoor humidity is low, and the indoor humidity can be automatically adjusted. Meanwhile, the gypsum building material also has good fire resistance, when a fire disaster occurs, the temperature can be continuously increased on the basis of 140 ℃ of the decomposition temperature after the continuous crystal water is completely decomposed, a large amount of water vapor generated in the decomposition process has a barrier effect on the spread of flame, and precious fire fighting time can be won.
3. The process is saved. When the mortar prepared by the method is constructed, the bottom layer mortar is firstly coated on the surface of a brick body, and after the bottom layer mortar is solidified, the surface layer mortar is coated on the surface of the bottom layer mortar, and after the surface layer mortar is solidified, the mortar is prepared. Compared with the traditional indoor wall construction, the method saves the procedure of putty painting, reduces the expenditure of manpower and materials, and can also obtain better construction effect.
In the present invention, the support aggregate is: one or more of vitrified micro bubbles, river sand, quartz sand, expanded perlite, light calcium carbonate, heavy calcium carbonate or talcum powder.
In the invention, the water-retaining agent is hydroxypropyl methyl cellulose and one or two of cellulose ether and thixotropic agent.
In the invention, the reinforcing construction auxiliary material comprises one or the combination of two of calcium hydroxide, heavy calcium and talcum powder.
In the invention, the fineness of the tourmaline micropowder is 1250mu, and the quantity of negative oxygen ions released by the tourmaline micropowder at the fineness is the largest.
The polypropylene fibers can play a role in crack resistance.
The retarder can slow down the mortar solidification speed, and avoids the influence on construction quality caused by quick dry solidification during construction.
In the invention, the citric acid gypsum can be directly replaced by natural gypsum, desulfurized gypsum and phosphogypsum, the formula composition, the preparation process and the application method of the citric acid gypsum are the same as those of the citric acid gypsum, and the prepared product has different performance and application effect and also belongs to the protection range of the invention.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A formula for producing plastering mortar by using citric acid gypsum is characterized in that: comprises bottom layer mortar and surface layer mortar,
the bottom layer mortar comprises the following components in percentage by weight: citric acid gypsum: 40-80 parts of supporting aggregate: 10-20 parts of composite water-retaining agent, 0.1-1 part of retarder, 10-20 parts of triple superphosphate, 0.2-1 part of polypropylene fiber and 1-10 parts of tourmaline micropowder;
the formula of the surface mortar comprises the following components in percentage by weight: 10-90 parts of citric acid gypsum, 10-90 parts of reinforcing construction auxiliary materials, 0.1-1 part of composite water-retaining agent, 0.05-0.5 part of retarder, 0.5-3 parts of light calcium and 1-10 parts of tourmaline micropowder.
2. The formula for producing plastering mortar by using citric acid gypsum as claimed in claim 1, wherein the formula comprises the following components in percentage by weight: the supporting aggregate is: one or more of vitrified micro bubbles, river sand, quartz sand, expanded perlite, light calcium carbonate, heavy calcium carbonate or talcum powder.
3. The formula for producing plastering mortar by using citric acid gypsum as claimed in claim 2, wherein: the water-retaining agent is one or the combination of two of hydroxypropyl methylcellulose, cellulose ether and thixotropic agent.
4. The formula for producing plastering mortar by using citric acid gypsum as claimed in claim 3, wherein the formula comprises the following components in percentage by weight: the reinforcing construction auxiliary material comprises one or a combination of more of calcium hydroxide, heavy calcium carbonate or talcum powder.
5. The formula for producing plastering mortar by using citric acid gypsum as claimed in claim 4, wherein the formula comprises the following components in percentage by weight: the fineness of the tourmaline micro powder is 1250 mu.
6. The formula for producing plastering mortar by using citric acid gypsum as claimed in claim 5, wherein the formula comprises the following components in percentage by weight:
the bottom layer mortar comprises the following components in percentage by weight: citric acid gypsum: 60-70 parts of supporting aggregate: 10-15 parts of composite water-retaining agent, 0.3-0.7 part of retarder, 10-15 parts of triple superphosphate, 0.5-1 part of polypropylene fiber and 2-6 parts of tourmaline micropowder;
the formula of the surface mortar comprises the following components in percentage by weight: 40-70 parts of citric acid gypsum, 40-70 parts of reinforcing construction auxiliary materials, 0.3-0.7 part of composite water-retaining agent, 0.1-0.2 part of retarder, 0.6-2 parts of light calcium and 2-6 parts of tourmaline micropowder.
7. A process for producing plastering mortar by using citric acid gypsum is characterized by comprising the following steps: the method comprises the following steps:
(1) putting the materials except the support aggregate in the bottom layer mortar formula into a stirrer according to the mass fraction ratio, stirring for 3-5min, adding the support aggregate into the stirrer, fully mixing the materials in the stirrer for 5-10min, and packaging the uniformly mixed powder to obtain bottom layer mortar;
(2) and (3) putting the materials except the reinforcing construction auxiliary materials in the surface layer mortar formula into a stirrer according to the mass fraction ratio, stirring for 3-5min, adding the reinforcing construction auxiliary materials into the stirrer, stirring for 5-10min, fully mixing the materials, and packaging the uniformly mixed powder to obtain the surface layer mortar.
8. A process for producing plastering mortar by using citric acid gypsum is characterized by comprising the following steps: when the bottom layer mortar and the surface layer mortar are prepared, the rotating speed of the stirrer is 20-30 r/min.
9. The application of the plastering mortar produced by using the citric acid gypsum is characterized in that: the method comprises the following steps:
(1) adding water into the bottom layer mortar for blending, coating the bottom layer mortar on the surface of a brick body, wherein the coating thickness is about 0.5-5cm, and standing and solidifying;
(2) and adding water into the surface layer mortar for blending, coating the surface layer mortar on the surface of the bottom layer mortar to a coating thickness of about 1-3mm, and standing for solidification.
10. The use of the plastering mortar produced by using the citric acid gypsum as claimed in claim 9, wherein: the surface layer mortar can be coated for 1-2 times, and after the coating material is solidified at the last time, the next coating is carried out.
CN202010699754.6A 2020-07-20 2020-07-20 Formula, process and application for producing plastering mortar by using citric acid gypsum Withdrawn CN111777395A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112897976A (en) * 2021-03-09 2021-06-04 山东洁盾环保科技有限公司 Light plastering citric acid gypsum mortar
CN115108798A (en) * 2022-06-29 2022-09-27 武汉三源特种建材有限责任公司 Large-flow-state self-compacting citric acid gypsum mortar and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112897976A (en) * 2021-03-09 2021-06-04 山东洁盾环保科技有限公司 Light plastering citric acid gypsum mortar
CN115108798A (en) * 2022-06-29 2022-09-27 武汉三源特种建材有限责任公司 Large-flow-state self-compacting citric acid gypsum mortar and preparation method thereof
CN115108798B (en) * 2022-06-29 2023-05-12 武汉三源特种建材有限责任公司 Large-flow-state self-compaction citric acid gypsum mortar and preparation method thereof

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Application publication date: 20201016