CN115385612A - Engineering waste soil regenerated light wallboard and preparation method thereof - Google Patents
Engineering waste soil regenerated light wallboard and preparation method thereof Download PDFInfo
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- CN115385612A CN115385612A CN202211107519.0A CN202211107519A CN115385612A CN 115385612 A CN115385612 A CN 115385612A CN 202211107519 A CN202211107519 A CN 202211107519A CN 115385612 A CN115385612 A CN 115385612A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
-
- 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
- C04B18/00—Use 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
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent 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
- C04B2111/40—Porous or lightweight 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- 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
-
- 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
Abstract
The invention provides an engineering waste soil recycled light wallboard, which comprises the following components in percentage by mass: 40-60 parts of engineering waste soil, 5-10 parts of fly ash, 10-20 parts of carbide slag, 4-8 parts of waste concrete, 20-30 parts of recycled fine aggregate, 5-15 parts of short fiber, 1-3 parts of foaming agent, 0.1-0.2 part of foam stabilizer, 0.4-0.8 part of high-strength water reducer, 1-3 parts of organosilicon water repellent and 20-40 parts of water. The engineering waste soil regeneration light wallboard has the advantages of high strength, light weight, water resistance, good heat insulation and preservation performance, energy conservation and environmental protection.
Description
Technical Field
The invention relates to the technical field of building material preparation, in particular to an engineering waste soil regeneration light wallboard and a preparation method thereof.
Background
Along with the continuous construction and development of cities, the generated construction waste is gradually increased, the quantity of the construction waste accounts for 30-40% of the total quantity of the urban waste, and more than half of the construction waste is engineering waste soil. The engineering waste soil has the characteristics of large quantity, complex components, difficult treatment and the like, and becomes a problem to be solved urgently in the sustainable development of the current cities.
Due to the novel urbanization construction and sustainable development, the assembly type building is more and more widely applied. The light wall board has the advantages of large size, large scale, high construction efficiency and the like, and is widely applied to fabricated buildings. However, the light wallboard is expensive, and the light wallboard with good performance prepared by utilizing the construction waste has great economic effect and social effect.
There are reports on the use of construction waste in the preparation of lightweight wall panels, for example, patent CN202110742068.7 discloses a lightweight wall panel based on engineering slag soil, which comprises two layers of fiberglass mesh cloth and a base material located between the fiberglass mesh cloth, wherein the base material comprises cement, engineering slag soil, construction regenerated stone powder and admixture, and the obtained lightweight wall panel has the advantage of high compressive strength, but the preparation process of the lightweight wall panel is complicated.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an engineering waste soil regeneration light wallboard which has the advantages of high strength, light weight, water resistance, good heat insulation and heat preservation, energy conservation and environmental protection.
The technical scheme adopted for realizing the above purpose of the invention is as follows:
the engineering waste soil regeneration light wallboard comprises the following components in parts by mass: 40-60 parts of engineering waste soil, 5-10 parts of fly ash, 10-20 parts of carbide slag, 4-8 parts of waste concrete, 20-30 parts of recycled fine aggregate, 5-15 parts of short fiber, 1-3 parts of foaming agent, 0.1-0.2 part of foam stabilizer, 0.4-0.8 part of high-strength water reducer, 1-3 parts of organosilicon water repellent and 20-40 parts of water.
The engineered waste soil includes quartz, kaolin, and aluminosilicates.
The fly ash is grade II or above fly ash.
The waste concrete is crushed, and the particle size of the particles is 4.75-9.5 mm.
The recycled fine aggregate is obtained by crushing and screening construction waste and has the volume weight of 100kg/m 3 The grain diameter is 0.5-4 mm.
The length of the short fiber is 15-30 mm, and the linear density is 1.2-1.5dtex.
The foaming agent is gelatin or xanthan gum.
The foam stabilizer is polyacrylamide or polyvinyl alcohol.
The water reducing agent is a polycarboxylic acid water reducing agent or a naphthalene high-efficiency water reducing agent.
The invention also provides a preparation method of the engineering waste soil recycled light wallboard, which comprises the following steps: (1) Mixing and grinding the engineering waste soil, the fly ash and the carbide slag, calcining at 700-800 ℃, and calcining to obtain a mixed material;
(2) Adding a proper amount of waste concrete into the mixture for modification, and grinding the mixture into a mixed material;
(3) Mixing and stirring the modified mixed material and short fibers for 5-6 min, then sequentially adding water, a foaming agent, a foam stabilizer, a high-strength water reducing agent and an organic silicon water repellent, stirring for 5-10 min to obtain a slurry mixture, and finally adding the regenerated fine aggregate and continuously stirring for 5-10 min;
(4) Pouring the stirred materials into a light wallboard mould, placing the light wallboard mould in an environment of 25 +/-5 ℃ for air drying until the materials are hardened, and demoulding to obtain the engineering waste soil regenerated light wallboard.
Compared with the prior art, the engineering waste soil regeneration light wallboard provided by the invention has the following advantages: (1) The invention utilizes the recycled fine aggregate obtained by crushing and screening the engineering waste soil, the waste concrete and the construction waste, reduces the harm of the construction waste to the environment, simultaneously prepares the recycled light wallboard with high strength and excellent thermal insulation performance, and has larger economic effect and social effect.
(2) The invention uses carbide slag and fly ash, wherein the main component of the carbide slag is Ca (OH) 2 CaO decomposed during calcination is an alkali metal activator, and activity is enhanced during calcination with engineering slag soilGenerating sexual substances; meanwhile, the carbide slag and the fly ash can also react to provide certain strength, so that the prepared regenerated light wallboard has good mechanical property.
(3) According to the invention, the waste concrete is used for modifying the calcined material, the surface texture of the waste concrete is rough, the cohesion among particles on the sludge is enhanced, the strength performance and stability of the material are improved to a great extent when the light wallboard is prepared, and the expansion in non-applicable aspects is reduced.
(4) The invention uses the recycled fine aggregate and adds more short fibers in the stirring process, improves the particle size of the materials during stirring, reduces microcracks caused by mortar shrinkage, dry shrinkage and the like, can improve the waterproof performance and the anti-seismic performance of the prepared heat-insulating light wallboard, and simultaneously uses the water repellent to further improve the waterproof performance of the heat-insulating light wallboard.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention is further described in detail with reference to the following examples.
Example 1
The engineering waste soil recycled light wallboard provided in the embodiment is prepared by the following steps:
(1) Mixing and grinding 40 parts of engineering waste soil, 5 parts of fly ash and 10 parts of carbide slag, calcining at 700-800 ℃, and calcining to obtain a mixed material;
(2) Adding 4 parts of waste concrete into the mixture for modification, and grinding the mixture into a fine mixed material;
(3) Mixing and stirring the modified mixed material and 10 parts of short fibers for 5min, then sequentially adding 20 parts of water, 2 parts of foaming agent, 0.15 part of foam stabilizer, 0.5 part of high-strength water reducing agent and 1 part of organic silicon water repellent, stirring for 5min to obtain a slurry mixture, and finally adding 20 parts of regenerated fine aggregate and continuing stirring for 10min;
(4) Pouring the stirred materials into a light wallboard mould, placing the light wallboard mould in an environment of 25 +/-5 ℃ for air drying until the materials are hardened, and demoulding to obtain the engineering waste soil regenerated light wallboard.
The performance data of the resulting recycled lightweight wallboard is shown in the table below.
Example 2
Example 2 an engineering waste soil recycled light wallboard is prepared according to the method in example 1, and the difference is that the mass ratio of the components is different.
The mass ratios of the components in example 2 and the performance data of the resulting recycled lightweight wallboard are shown in the table below.
Comparative example 1
Comparative example 1 an engineered waste soil recycled light weight wallboard was prepared as in example 1, except that calcination was performed without the addition of carbide slag. The performance data of the resulting recycled lightweight wallboard is shown in the table below.
Comparative example 2
Comparative example 2 an engineering waste soil recycled light weight wallboard was prepared as in example 1, except that no waste concrete was added for modification. The performance data of the resulting recycled lightweight wallboard is shown in the table below.
As can be seen from the table, the engineering waste soil recycled light wallboard provided by the invention has the advantages of low heat conductivity coefficient and excellent heat insulation performance. Meanwhile, the waterproof paint has high compressive strength, good mechanical property and certain waterproofness.
Claims (10)
1. The utility model provides an engineering spoil regeneration light wallboard which characterized in that: the engineering waste soil regeneration light wallboard comprises the following components in parts by mass: 40-60 parts of engineering waste soil, 5-10 parts of fly ash, 10-20 parts of carbide slag, 4-8 parts of waste concrete, 20-30 parts of recycled fine aggregate, 5-15 parts of short fiber, 1-3 parts of foaming agent, 0.1-0.2 part of foam stabilizer, 0.4-0.8 part of high-strength water reducer, 1-3 parts of organosilicon water repellent and 20-40 parts of water.
2. The engineered waste reclamation lightweight wallboard of claim 1, wherein: the engineered waste soil includes quartz, kaolin, and aluminosilicates.
3. The engineered waste reclamation lightweight wallboard of claim 1, wherein: the fly ash is grade II or above fly ash.
4. The engineered waste reclamation lightweight wallboard of claim 1, wherein: the waste concrete is crushed, and the particle size of the particles is 4.75-9.5 mm.
5. The engineered waste reclamation lightweight wallboard of claim 1, wherein: the recycled fine aggregate is obtained by crushing and screening construction waste and has the volume weight of 100kg/m 3 The grain diameter is 0.5-4 mm.
6. The engineered waste reclamation lightweight wallboard of claim 1, wherein: the length of the short fiber is 15-30 mm, and the linear density is 1.2-1.5dtex.
7. The engineered waste reclamation lightweight wallboard of claim 1, wherein: the foaming agent is gelatin or xanthan gum.
8. The engineered waste reclamation lightweight wallboard of claim 1, wherein: the foam stabilizer is polyacrylamide or polyvinyl alcohol.
9. The engineered waste soil recycled light wallboard of claim 1, wherein: the water reducing agent is a polycarboxylic acid water reducing agent or a naphthalene high-efficiency water reducing agent.
10. A method for preparing the engineering spoil recycling lightweight wallboard according to claim 1, which is characterized by comprising the following steps: (1) Mixing and grinding the engineering waste soil, the fly ash and the carbide slag, calcining at 700-800 ℃, and calcining to obtain a mixed material;
(2) Adding a proper amount of waste concrete into the mixture for modification, and grinding the mixture into a mixed material;
(3) Mixing and stirring the modified mixed material and short fibers for 5-6 min, then sequentially adding water, a foaming agent, a foam stabilizer, a high-strength water reducing agent and an organic silicon water repellent, stirring for 5-10 min to obtain a slurry mixture, and finally adding the regenerated fine aggregate and continuously stirring for 5-10 min;
(4) Pouring the stirred materials into a light wallboard mould, placing the light wallboard mould in an environment of 25 +/-5 ℃ for air drying until the materials are hardened, and demoulding to obtain the engineering waste soil regenerated light wallboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211107519.0A CN115385612A (en) | 2022-09-13 | 2022-09-13 | Engineering waste soil regenerated light wallboard and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211107519.0A CN115385612A (en) | 2022-09-13 | 2022-09-13 | Engineering waste soil regenerated light wallboard and preparation method thereof |
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|---|---|
| CN115385612A true CN115385612A (en) | 2022-11-25 |
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|---|---|---|---|
| CN202211107519.0A Pending CN115385612A (en) | 2022-09-13 | 2022-09-13 | Engineering waste soil regenerated light wallboard and preparation method thereof |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106278377A (en) * | 2016-08-15 | 2017-01-04 | 马鞍山十七冶工程科技有限责任公司 | A kind of full regeneration lightweight aggregate concrete self-insulating light wallboard and preparation method |
| CN111348859A (en) * | 2020-05-08 | 2020-06-30 | 张延年 | High-mixing-amount silicon solid waste concrete activator and preparation method thereof |
| CN111439942A (en) * | 2020-03-20 | 2020-07-24 | 哈尔滨工业大学(深圳)(哈尔滨工业大学深圳科技创新研究院) | Method for preparing cement admixture by utilizing engineering waste soil, cement admixture and cement composition |
| CN111875268A (en) * | 2020-08-05 | 2020-11-03 | 深圳大学 | Calcined clay, process for producing the same, and limestone calcined clay cement |
| CN112707687A (en) * | 2020-12-30 | 2021-04-27 | 中国矿业大学 | Assembled recycled aggregate aerated concrete wallboard and preparation method thereof |
| CN112759293A (en) * | 2020-12-31 | 2021-05-07 | 深圳市土淘环保技术有限公司 | Concrete admixture, concrete product and preparation method thereof |
| CN113277808A (en) * | 2021-07-01 | 2021-08-20 | 南京工业大学 | Light wallboard based on engineering residual soil and preparation process thereof |
| CN113354314A (en) * | 2021-07-20 | 2021-09-07 | 深圳市和盛环保科技有限公司 | High-activity cementing material based on engineering muck |
| US20220033303A1 (en) * | 2019-02-25 | 2022-02-03 | South China University Of Technology | Cement mortar containing excavated soil prepared by replacing natural sand with engineering soil, and preparation method therefor and application thereof |
-
2022
- 2022-09-13 CN CN202211107519.0A patent/CN115385612A/en active Pending
Patent Citations (9)
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|---|---|---|---|---|
| CN106278377A (en) * | 2016-08-15 | 2017-01-04 | 马鞍山十七冶工程科技有限责任公司 | A kind of full regeneration lightweight aggregate concrete self-insulating light wallboard and preparation method |
| US20220033303A1 (en) * | 2019-02-25 | 2022-02-03 | South China University Of Technology | Cement mortar containing excavated soil prepared by replacing natural sand with engineering soil, and preparation method therefor and application thereof |
| CN111439942A (en) * | 2020-03-20 | 2020-07-24 | 哈尔滨工业大学(深圳)(哈尔滨工业大学深圳科技创新研究院) | Method for preparing cement admixture by utilizing engineering waste soil, cement admixture and cement composition |
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| CN111875268A (en) * | 2020-08-05 | 2020-11-03 | 深圳大学 | Calcined clay, process for producing the same, and limestone calcined clay cement |
| CN112707687A (en) * | 2020-12-30 | 2021-04-27 | 中国矿业大学 | Assembled recycled aggregate aerated concrete wallboard and preparation method thereof |
| CN112759293A (en) * | 2020-12-31 | 2021-05-07 | 深圳市土淘环保技术有限公司 | Concrete admixture, concrete product and preparation method thereof |
| CN113277808A (en) * | 2021-07-01 | 2021-08-20 | 南京工业大学 | Light wallboard based on engineering residual soil and preparation process thereof |
| CN113354314A (en) * | 2021-07-20 | 2021-09-07 | 深圳市和盛环保科技有限公司 | High-activity cementing material based on engineering muck |
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