CN115353331A - Preparation method of regenerated plastering mortar - Google Patents

Preparation method of regenerated plastering mortar Download PDF

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Publication number
CN115353331A
CN115353331A CN202210893477.1A CN202210893477A CN115353331A CN 115353331 A CN115353331 A CN 115353331A CN 202210893477 A CN202210893477 A CN 202210893477A CN 115353331 A CN115353331 A CN 115353331A
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China
Prior art keywords
recycled
powder
steps
plastering mortar
following
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210893477.1A
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Chinese (zh)
Inventor
朱雪峰
刘小全
张楼
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Nanjing Yifu New Material Technology Co ltd
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Nanjing Yifu New Material Technology Co ltd
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Priority to CN202210893477.1A priority Critical patent/CN115353331A/en
Publication of CN115353331A publication Critical patent/CN115353331A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04Waste materials; Refuse
    • C04B18/16Waste materials; Refuse from building or ceramic industry
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00017Aspects relating to the protection of the environment
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention discloses a preparation method of regenerated plastering mortar, which comprises the following steps: s1: crushing and screening the waste mortar to obtain recycled aggregate and powder, and S2: performing heat treatment, grinding and screening on the powder to obtain regenerated powder, and S3: and (2) drying the recycled aggregate obtained in the step (S1), and mixing the dried recycled aggregate with the recycled powder and the external admixture in proportion to obtain the recycled plastering mortar. The preparation method of the regenerated plastering mortar promotes the regeneration and utilization of the waste mortar, and has the advantages of simple process, energy conservation and emission reduction.

Description

Preparation method of regenerated plastering mortar
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a preparation method of regenerated plastering mortar.
Background
The mortar is used in the building engineering only second to the concrete and is an important component in the building. However, a large amount of floor ash is generated in the use process of mortar, if the floor ash is not recycled in time and is smeared on a wall after the final setting time is exceeded, the problems of hollowing and cracking of plastering can be caused, meanwhile, unused mortar on the floor can be agglomerated to form building rubbish, great difficulty is brought to the field and appearance management of the site, and material waste and environmental pollution can be caused. Therefore, it is necessary to utilize the waste mortar by effective measures such as resource recycling and low-carbon utilization.
At present, most of construction wastes are treated by crushing hardened cement-based materials to be used as recycled aggregates or landfill materials. The recycling mode has lower added value, unstable quality of recycled aggregate concrete and great difficulty in use technology. Therefore, a recycling method of the waste mortar is greatly different from a treatment method of general construction waste, and an efficient and energy-saving recycling method of the waste mortar is required.
Disclosure of Invention
The invention aims to provide a preparation method of regenerated plastering mortar, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of regenerated plastering mortar comprises the following steps:
s1: crushing and screening the waste mortar to obtain recycled aggregate and powder;
s2: performing heat treatment, grinding and screening on the powder to obtain regenerated powder;
s3: and (2) drying the recycled aggregate obtained in the step (S1), and mixing the dried recycled aggregate with the recycled powder and the external admixture in proportion to obtain the recycled plastering mortar.
Preferably, in the step S1, the particle size of the recycled aggregate is less than or equal to 4.75mm, and the fineness modulus is 2.2-2.7.
In any of the above schemes, preferably, in step S2, the powder heat treatment process includes adding auxiliary materials, high temperature treatment, and quenching, wherein the high temperature treatment temperature is 800-1500 ℃.
In any of the above schemes, preferably, the auxiliary material is one or a combination of more of soda ash, mirabilite, limestone and quartz sand.
In any of the above schemes, preferably, in step S3, the admixture includes a mineral admixture, a water retention thickener, an air entraining agent, and a water reducing agent.
In any of the above schemes, preferably, the mineral admixture is one or a combination of more of fly ash, mineral powder, metallurgical slag powder and stone powder.
In any of the above embodiments, preferably, the water retention thickener is one or more of cellulose ether, bentonite, and starch ether.
In any of the above schemes, preferably, the air-entraining agent is one or a combination of more of a rosin air-entraining agent, an alkylbenzene sulfonate air-entraining agent, a saponin air-entraining agent, a lignin salt air-entraining agent, and a fatty alcohol sulfonate air-entraining agent.
In any of the above embodiments, preferably, the water reducing agent is one or a combination of a plurality of polycarboxylic acid water reducing agents, naphthalene water reducing agents, lignosulfonate water reducing agents and melamine water reducing agents.
In any of the above schemes, preferably, in step S3, the recycled aggregate, the recycled powder and the admixture are 50 to 85% by mass: 10-50%: 0.1 to 10 percent.
The invention has the technical effects and advantages that: the preparation method of the regenerated plastering mortar promotes the regeneration and utilization of the waste mortar, and has the advantages of simple process, energy conservation and emission reduction.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, and is not intended to limit the present invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Example 1:
the invention provides a preparation method of regenerated plastering mortar as shown in figure 1, which is realized by the following steps: 1. and crushing and screening the waste mortar to obtain the recycled aggregate and powder. 2. The powder is subjected to heat treatment, grinding and screening to obtain regenerated powder. 3. After the recycled aggregate is dried and is mixed with the recycled powder and the admixture in proportion, the mass ratio of the recycled aggregate to the recycled powder to the admixture is 50-85%: 10-50%: 0.1-10 percent to obtain the regenerated plastering mortar.
In the first step, the particle size of the recycled aggregate after screening the waste mortar is less than or equal to 4.75mm, and the fineness modulus is 2.2-2.7. And the heat treatment process of the powder in the second step comprises the steps of adding auxiliary materials, high-temperature treatment and quenching. The auxiliary material is a mixture of mirabilite and limestone, and the high-temperature treatment temperature is 850 ℃. The external admixture in the third step comprises a mineral admixture, a water retention thickening agent, an air entraining agent and a water reducing agent. The mineral admixture is a mixture of fly ash, mineral powder and metallurgical slag powder, the water retention thickening agent is a mixture of cellulose ether and bentonite, the air entraining agent is a mixture of rosin air entraining agent and alkylbenzene sulfonate air entraining agent, and the water reducing agent is a polycarboxylic acid water reducing agent.
Example 2:
the invention provides a preparation method of regenerated plastering mortar as shown in figure 1, which is realized by the following steps: 1. and crushing and screening the waste mortar to obtain the recycled aggregate and powder. 2. The powder is subjected to heat treatment, grinding and screening to obtain regenerated powder. 3. After the recycled aggregate is dried and is mixed with the recycled powder and the admixture in proportion, the mass percent of the recycled aggregate, the recycled powder and the admixture is 50-85%: 10-50%: 0.1 to 10 percent to obtain the regenerated plastering mortar.
In the first step, the particle size of the recycled aggregate after screening the waste mortar is less than or equal to 4.75mm, and the fineness modulus is 2.2-2.7. And the heat treatment process of the powder in the second step comprises the steps of adding auxiliary materials, high-temperature treatment and quenching. The auxiliary material is a mixture of soda ash, limestone and quartz sand, and the high-temperature treatment temperature is 1500 ℃. The external admixture in the third step comprises mineral admixture, water-retaining thickener, air entraining agent and water reducing agent. The mineral admixture is a mixture of metallurgical slag powder and stone powder, the water-retaining thickening agent is a mixture of cellulose ether and starch ether, the air entraining agent is a mixture of saponin air entraining agent, lignin salt air entraining agent and fatty alcohol sulfonate air entraining agent, and the water reducing agent is a naphthalene water reducing agent.
Example 3:
the invention provides a preparation method of regenerative plastering mortar shown in figure 1, which is realized according to the following steps: 1. and crushing and screening the waste mortar to obtain the recycled aggregate and powder. 2. The powder is subjected to heat treatment, grinding and screening to obtain regenerated powder. 3. After the recycled aggregate is dried and is mixed with the recycled powder and the admixture in proportion, the mass ratio of the recycled aggregate to the recycled powder to the admixture is 50-85%: 10-50%: 0.1 to 10 percent to obtain the regenerated plastering mortar.
In the first step, the particle size of the recycled aggregate after screening the waste mortar is less than or equal to 4.75mm, and the fineness modulus is 2.2-2.7. And the heat treatment process of the powder in the second step comprises the steps of adding auxiliary materials, high-temperature treatment and quenching. The auxiliary material is a mixture of soda ash, limestone and quartz sand, and the high-temperature treatment temperature is 1350 ℃. The external admixture in the third step comprises a mineral admixture, a water retention thickening agent, an air entraining agent and a water reducing agent. The mineral admixture is a mixture of fly ash, metallurgical slag powder and stone powder, the water retention thickening agent is a mixture of bentonite and starch ether, the air entraining agent is a mixture of rosin air entraining agents and fatty alcohol sulfonate air entraining agents, and the water reducing agent is a mixture of a polycarboxylic acid water reducing agent, a lignosulfonate water reducing agent and a melamine water reducing agent.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A preparation method of regenerated plastering mortar is characterized by comprising the following steps: the method comprises the following steps:
s1: crushing and screening the waste mortar to obtain recycled aggregate and powder;
s2: performing heat treatment, grinding and screening on the powder to obtain regenerated powder;
s3: and (3) drying the recycled aggregate obtained in the step (S1), and mixing the dried recycled aggregate with the recycled powder and the external admixture in proportion to obtain the recycled plastering mortar.
2. The preparation method of the recycled plastering mortar of claim 1, wherein the preparation method comprises the following steps: in the step S1, the particle size of the recycled aggregate is less than or equal to 4.75mm, and the fineness modulus is 2.2-2.7.
3. The method for preparing a recycled plastering mortar of claim 1, wherein the method comprises the following steps: in step S2, the powder heat treatment process comprises the steps of adding auxiliary materials, high-temperature treatment and quenching, wherein the high-temperature treatment temperature is 800-1500 ℃.
4. The method for preparing a recycled plastering mortar of claim 3, wherein the method comprises the following steps: the auxiliary material is one or a combination of more of sodium carbonate, mirabilite, limestone and quartz sand.
5. The method for preparing a recycled plastering mortar of claim 1, wherein the method comprises the following steps: in step S3, the admixture includes a mineral admixture, a water-retaining thickener, an air-entraining agent, and a water-reducing agent.
6. The method for preparing a recycled plastering mortar of claim 5, wherein the method comprises the following steps: the mineral admixture is one or a combination of more of fly ash, mineral powder, metallurgical slag powder and stone powder.
7. The method for preparing a recycled plastering mortar of claim 5, wherein the method comprises the following steps: the water-retaining thickener is one or the combination of more of cellulose ether, bentonite and starch ether.
8. The method for preparing a recycled plastering mortar of claim 5, wherein the method comprises the following steps: the air entraining agent is one or a combination of more of rosin air entraining agent, alkyl benzene sulfonate air entraining agent, saponin air entraining agent, lignin salt air entraining agent and fatty alcohol sulfonate air entraining agent.
9. The preparation method of the recycled plastering mortar of claim 5, wherein the preparation method comprises the following steps: the water reducing agent is one or a combination of a plurality of polycarboxylic acid water reducing agents, naphthalene water reducing agents, lignosulfonate water reducing agents and melamine water reducing agents.
10. The method for preparing a recycled plastering mortar of claim 1, wherein the method comprises the following steps: in step S3, the recycled aggregate, the recycled powder and the admixture are 50-85% by mass: 10-50%: 0.1 to 10 percent.
CN202210893477.1A 2022-07-27 2022-07-27 Preparation method of regenerated plastering mortar Pending CN115353331A (en)

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Application Number Priority Date Filing Date Title
CN202210893477.1A CN115353331A (en) 2022-07-27 2022-07-27 Preparation method of regenerated plastering mortar

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Application Number Priority Date Filing Date Title
CN202210893477.1A CN115353331A (en) 2022-07-27 2022-07-27 Preparation method of regenerated plastering mortar

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CN115353331A true CN115353331A (en) 2022-11-18

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101508552A (en) * 2009-03-26 2009-08-19 绵阳市西蜀新型建材有限公司 Construction castoff composite silicate thermal insulation hollow block and method of producing the same
CN101905954A (en) * 2010-07-20 2010-12-08 昆明理工大学 Binding material prepared from construction waste and preparation method thereof
CN102701647A (en) * 2012-01-13 2012-10-03 深圳市伟沦建材有限公司 Preparation method of recycled aggregate ready-mixed mortar
CN106495612A (en) * 2016-11-03 2017-03-15 清远肆柒柒新材料科技有限公司 A kind of motar composition
CN106746831A (en) * 2017-02-28 2017-05-31 湖北大学 A kind of waste and old concrete Low Temperature Heat Treatment regeneration activity micro mist and preparation method thereof
CN107352895A (en) * 2016-12-02 2017-11-17 深圳市华威环保建材有限公司 One kind regeneration motar and preparation method thereof
CN108275936A (en) * 2017-12-29 2018-07-13 上海国砼环保设备有限公司 A kind of regeneration emery dust green concrete and preparation method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101508552A (en) * 2009-03-26 2009-08-19 绵阳市西蜀新型建材有限公司 Construction castoff composite silicate thermal insulation hollow block and method of producing the same
CN101905954A (en) * 2010-07-20 2010-12-08 昆明理工大学 Binding material prepared from construction waste and preparation method thereof
CN102701647A (en) * 2012-01-13 2012-10-03 深圳市伟沦建材有限公司 Preparation method of recycled aggregate ready-mixed mortar
CN106495612A (en) * 2016-11-03 2017-03-15 清远肆柒柒新材料科技有限公司 A kind of motar composition
CN107352895A (en) * 2016-12-02 2017-11-17 深圳市华威环保建材有限公司 One kind regeneration motar and preparation method thereof
CN106746831A (en) * 2017-02-28 2017-05-31 湖北大学 A kind of waste and old concrete Low Temperature Heat Treatment regeneration activity micro mist and preparation method thereof
CN108275936A (en) * 2017-12-29 2018-07-13 上海国砼环保设备有限公司 A kind of regeneration emery dust green concrete and preparation method thereof

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