CN111825377A - Method for manufacturing brick-concrete fully-regenerated dry-mixed mortar - Google Patents
Method for manufacturing brick-concrete fully-regenerated dry-mixed mortar Download PDFInfo
- Publication number
- CN111825377A CN111825377A CN202010483501.5A CN202010483501A CN111825377A CN 111825377 A CN111825377 A CN 111825377A CN 202010483501 A CN202010483501 A CN 202010483501A CN 111825377 A CN111825377 A CN 111825377A
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- China
- Prior art keywords
- mortar
- dry
- mixed mortar
- mixed
- powder
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Classifications
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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
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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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)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a manufacturing method of brick-concrete fully-regenerated dry-mixed mortar, which comprises the steps of crushing and screening construction waste to form regenerated aggregate, placing the regenerated aggregate, cement and fly ash in a dry-mixed mortar mixer to be fully stirred so as to be uniformly mixed to prepare dry-mixed mortar powder, adding organic matters with at least two hydroxyl groups in a molecular structure into the dry-mixed mortar powder, and preventing or delaying the hydration process of the mortar through the adsorption and other actions so as to prolong the setting time of the mortar; secondly, adding a proper amount of organic matters containing carbon-oxygen double bonds with the molecular weight range of 5-30 ten thousand into the dry-mixed mortar powder, and releasing free water in the middle adsorption stage in the early stage of hydration to ensure that the standards of the out-of-machine consistency, the 2-hour consistency loss rate, the water retention rate and the like of the mortar meet the requirements of premixed mortar (GB/T25181); in addition, the water reducing agent is added into the dry powder mortar powder, so that the water consumption is reduced, and the compressive strength of the mortar is improved.
Description
Technical Field
The invention relates to the field of dry powder mortar manufacturing, in particular to a manufacturing method of brick-concrete fully-regenerated dry-mixed mortar.
Background
The brick-concrete fully-recycled dry-mixed mortar powder is prepared by replacing fully-recycled sand with brick-concrete recycled fine aggregate.
The brick-concrete building garbage is the main type of building garbage, and the main components of the brick-concrete building garbage are waste bricks, and the small parts of the brick-concrete building garbage are concrete blocks, mortar blocks, waste ceramics and the like.
The recycled aggregate made of the brick-concrete building waste has the defects of high water absorption rate and long water absorption time, and if no proper auxiliary agent is used for modification, the common brick-concrete fully-recycled dry-mixed mortar powder is easy to have the conditions of large consistency loss, quick setting time, high water consumption and difficult strength reaching the standard during construction.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method for manufacturing brick-concrete fully-regenerated dry-mixed mortar, which solves the problems mentioned in the background technology.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme:
a process for preparing the fully regenerated dry-mixed mortar of brick-concrete class includes such steps as crushing building garbage, sieving to obtain regenerated aggregate, mixing it with cement and powdered coal ash in dry-mixed mortar mixer, adding organic substance with at least two hydroxy groups in molecular structure, adsorption to prevent or delay the hydration of mortar, and elongating the coagulation time of mortar.
Preferably, a proper amount of organic matters containing carbon-oxygen double bonds with the molecular weight range of 5-30 ten thousand is added into dry-mixed mortar powder, free water is released in the middle stage of adsorption in the early stage of hydration, and the consistency of the mortar after leaving the machine, the 2-hour consistency loss rate, the water retention rate and the like meet the standard.
Preferably, the water reducing agent is added into the dry-mixed mortar powder, and the water consumption of the dry-mixed mortar powder is obviously reduced on the premise of ensuring that the workability and the long-term mechanical property of the mortar are not influenced, so that the aim of improving the compressive strength of the mortar is fulfilled.
Preferably, the construction waste is brick-concrete type construction waste, and the main components of the construction waste are waste bricks, and the small parts of the construction waste are concrete blocks, mortar blocks, waste ceramics and the like.
The invention has the following beneficial effects: according to the invention, the organic matter and the water reducing agent with specific chemical structures and molecular weights are selected, so that the construction problem which is easy to occur when the brick-concrete recycled aggregate is used for preparing the fully recycled dry-mixed mortar powder is solved, and the compressive strength of the mortar is properly improved.
Detailed Description
The following examples are provided to illustrate the present invention in detail.
The invention provides a technical scheme that: a process for preparing the fully regenerated dry-mixed mortar of brick-concrete class includes such steps as crushing building garbage, sieving to obtain regenerated aggregate, mixing it with cement and powdered coal ash in dry-mixed mortar mixer, adding organic substance with at least two hydroxy groups in molecular structure, adsorption to prevent or delay the hydration of mortar, and elongating the coagulation time of mortar.
Preferably, a proper amount of organic matters containing carbon-oxygen double bonds with the molecular weight range of 5-30 ten thousand is added into dry-mixed mortar powder, free water is released in the middle stage of adsorption in the early stage of hydration, and the standards of the out-of-machine consistency, the 2-hour consistency loss rate, the water retention rate and the like of the mortar meet the requirements of premixed mortar (GB/T25181).
Preferably, the water reducing agent is added into the dry-mixed mortar powder, and the water consumption of the dry-mixed mortar powder is obviously reduced on the premise of ensuring that the workability and the long-term mechanical property of the mortar are not influenced, so that the aim of improving the compressive strength of the mortar is fulfilled.
Preferably, the construction waste is brick-concrete type construction waste, and the main components of the construction waste are waste bricks, and the small parts of the construction waste are concrete blocks, mortar blocks, waste ceramics and the like.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (4)
1. The manufacturing method of the brick-concrete fully-regenerated dry-mixed mortar comprises the following steps of firstly crushing and screening construction waste to form regenerated aggregate, and then placing the regenerated aggregate, cement and fly ash into a dry-mixed mortar mixer to be fully stirred so as to be uniformly mixed to prepare dry-mixed mortar powder, and is characterized in that: organic matters with not less than two hydroxyl groups in a molecular structure are added into dry-mixed mortar powder, and the hydration process of the mortar is prevented or delayed through the adsorption and other actions, so that the setting time of the mortar is prolonged.
2. The method for producing the brick-concrete fully-recycled dry-mixed mortar according to claim 1, wherein the method comprises the steps of: adding a proper amount of organic matters containing carbon-oxygen double bonds with the molecular weight range of 5-30 ten thousand into dry-mixed mortar powder, releasing free water in the middle adsorption stage in the early stage of hydration, and ensuring that the out-of-machine consistency, the 2-hour consistency loss rate, the water retention rate and the like of the mortar meet the standards.
3. The method for producing the brick-concrete type fully-recycled dry-mixed mortar according to claim 1 or 2, wherein: the water reducing agent is added into the dry-mixed mortar powder, so that the water consumption of the dry-mixed mortar powder is obviously reduced on the premise of ensuring that the workability and the long-term mechanical property of the mortar are not influenced, and the aim of improving the compressive strength of the mortar is fulfilled.
4. The method for producing the brick-concrete fully-recycled dry-mixed mortar according to claim 3, wherein: the construction waste is brick-concrete type construction waste, and the main components of the construction waste are waste bricks, and the small parts of the construction waste are concrete blocks, mortar blocks, waste ceramics and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010483501.5A CN111825377A (en) | 2020-06-01 | 2020-06-01 | Method for manufacturing brick-concrete fully-regenerated dry-mixed mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010483501.5A CN111825377A (en) | 2020-06-01 | 2020-06-01 | Method for manufacturing brick-concrete fully-regenerated dry-mixed mortar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111825377A true CN111825377A (en) | 2020-10-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010483501.5A Pending CN111825377A (en) | 2020-06-01 | 2020-06-01 | Method for manufacturing brick-concrete fully-regenerated dry-mixed mortar |
Country Status (1)
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| CN (1) | CN111825377A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2191533A1 (en) * | 1996-11-28 | 1998-05-28 | Stavros Kindylides | Block wall system and bonding agent |
| CN103771801A (en) * | 2014-01-06 | 2014-05-07 | 同济大学 | Dry-mixed ground mortar doped with bayer process red mud and application method thereof |
| CN106007562A (en) * | 2016-05-19 | 2016-10-12 | 四川震强绿舍建材有限公司 | Dry-mixed mortar prepared from construction waste recycled aggregate and preparation method of dry-mixed mortar |
| CN106242392A (en) * | 2016-07-20 | 2016-12-21 | 绍兴职业技术学院 | A kind of green regenerating special type mortar and preparation method thereof |
| CN106478027A (en) * | 2016-11-03 | 2017-03-08 | 清远肆柒柒新材料科技有限公司 | A kind of ground mortar composition |
| CN107117921A (en) * | 2017-06-12 | 2017-09-01 | 贵州中建建筑科研设计院有限公司 | A kind of gypsum-based construction garbage regeneration sand decorative mortar and preparation method thereof |
| CN108218338A (en) * | 2016-12-21 | 2018-06-29 | 大连理工大学 | It is a kind of to utilize dry-mixed ordinary mortar material of discarded concrete production and preparation method thereof |
| CN109761545A (en) * | 2019-03-27 | 2019-05-17 | 桐乡桐化建材有限公司 | A kind of recycled fine aggregate masonry mortar |
| CN110510958A (en) * | 2019-09-27 | 2019-11-29 | 杭州临安正翔建材有限公司 | A kind of subway filling mortar based on building waste |
-
2020
- 2020-06-01 CN CN202010483501.5A patent/CN111825377A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2191533A1 (en) * | 1996-11-28 | 1998-05-28 | Stavros Kindylides | Block wall system and bonding agent |
| CN103771801A (en) * | 2014-01-06 | 2014-05-07 | 同济大学 | Dry-mixed ground mortar doped with bayer process red mud and application method thereof |
| CN106007562A (en) * | 2016-05-19 | 2016-10-12 | 四川震强绿舍建材有限公司 | Dry-mixed mortar prepared from construction waste recycled aggregate and preparation method of dry-mixed mortar |
| CN106242392A (en) * | 2016-07-20 | 2016-12-21 | 绍兴职业技术学院 | A kind of green regenerating special type mortar and preparation method thereof |
| CN106478027A (en) * | 2016-11-03 | 2017-03-08 | 清远肆柒柒新材料科技有限公司 | A kind of ground mortar composition |
| CN108218338A (en) * | 2016-12-21 | 2018-06-29 | 大连理工大学 | It is a kind of to utilize dry-mixed ordinary mortar material of discarded concrete production and preparation method thereof |
| CN107117921A (en) * | 2017-06-12 | 2017-09-01 | 贵州中建建筑科研设计院有限公司 | A kind of gypsum-based construction garbage regeneration sand decorative mortar and preparation method thereof |
| CN109761545A (en) * | 2019-03-27 | 2019-05-17 | 桐乡桐化建材有限公司 | A kind of recycled fine aggregate masonry mortar |
| CN110510958A (en) * | 2019-09-27 | 2019-11-29 | 杭州临安正翔建材有限公司 | A kind of subway filling mortar based on building waste |
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Application publication date: 20201027 |