CN113429173B - Engineering muck baking-free corrugated tile and preparation process thereof - Google Patents
Engineering muck baking-free corrugated tile and preparation process thereof Download PDFInfo
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- CN113429173B CN113429173B CN202110742102.0A CN202110742102A CN113429173B CN 113429173 B CN113429173 B CN 113429173B CN 202110742102 A CN202110742102 A CN 202110742102A CN 113429173 B CN113429173 B CN 113429173B
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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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland 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
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/24—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like
- E04D3/26—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like of concrete or ceramics
-
- 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
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses an engineering muck baking-free corrugated tile and a preparation process thereof, wherein the raw materials for manufacturing the engineering muck corrugated tile water brick comprise 15-25 parts of cement, 80 parts of engineering muck, 25-35 parts of construction regenerated stone powder and 0-5 parts of modified additive, and the raw materials for manufacturing the modified additive are prepared from the following components in parts by weight. The invention adopts the arc arch corrugated tiles, the tiles are tightly matched with each other, the symmetry is good, and the upper and lower tile surfaces can be paved not only in a straight line but also in a staggered way. The corrugated tile can not only embody the style of modern buildings, but also embody the style of classical Chinese buildings.
Description
Technical Field
The invention relates to the technical field of building and municipal engineering, in particular to an engineering muck baking-free corrugated tile and a preparation process thereof.
Background
Engineering residual soil has been used as construction waste, and frequently appears in the processes of building, reconstruction, extension, demolition of various buildings, structures, pipe networks and the like of construction units and house decoration and fitment of residents. In recent two thirty years, the urbanization process of China is rapidly promoted, more and more large buildings are pulled out of the ground, and an economic center city based on building groups and a series of city group economic zones are formed. The amount of the engineering muck generated by the method is gradually increased, but a better treatment mode is not provided, so that the problem of muck treatment becomes a great problem which troubles the development of urbanization in China.
In view of the lower utilization ratio of the engineering muck, the tiles are widely applied to the existing building construction. The civil buildings such as the common civil houses, the high-grade villas and the like need to adopt roof laying engineering, and most of the roof laying engineering adopt roof materials such as corrugated tiles which have good seepage resistance, high durability, simple laying and better economy. Therefore, the combination of the two becomes a necessary trend in the development of urban construction in China, and for this reason, an engineering muck baking-free corrugated tile and a preparation process thereof are provided.
Disclosure of Invention
The invention aims to provide an engineering muck baking-free corrugated tile and a preparation process thereof, and aims to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the engineering muck baking-free corrugated tile is prepared from the following raw materials in parts by mass:
15-25 parts of cement
80 parts of engineering muck
25-35 parts of construction regenerated stone powder
0-5 parts of modified additive;
the modified additive is prepared from the following raw materials of 3.
Furthermore, the manufacturing raw material of the modified additive is powder, and the water reducing agent in the modified additive is a naphthalene sulfonate water reducing agent.
Furthermore, the engineering slag soil needs to be dried until the water content is below 10%, and then the engineering slag soil is thrown into a crusher to be crushed, and the part with the particle size below 2.5mm is taken.
Furthermore, the particle size of the regenerated building stone powder is 0.25-0.5mm.
Further, the cement is ordinary portland cement with the grade of 42.5.
The preparation process of the engineering muck unfired pantile comprises the following steps:
(1): firstly, weighing fly ash, sodium silicate, sodium carbonate, a water reducing agent, cement, engineering residue soil and construction regenerated stone powder in corresponding parts by weight for later use;
(2): stirring and mixing the fly ash, the sodium silicate, the sodium carbonate and the water reducing agent in the step (1), and obtaining a modified additive after stirring;
(3): putting the cement, the engineering muck and the construction regenerated stone powder weighed in the step (1) and the modified admixture mixed in the step (2) into a stirring machine for stirring and dry mixing for 3-4min, and then adding water into the stirring machine for continuous wet mixing and stirring for 5-6min;
(4): vibrating, pressurizing and molding the raw materials subjected to wet mixing in the step (3);
(5): and (5) curing the material formed in the step (4), wherein in the curing process, the material is firstly cured for 3 days in an environment with the relative humidity of 40-60%, and then the material is transferred to an environment with the relative humidity of more than 80% for curing for 28 days to obtain the baking-free corrugated tile of the engineering muck.
Further, the pressure value in the pressure forming process in the step (4) is 20MPa.
Further, the water added in the wet mixing in the step (3) is city tap water.
Further, in the step (5), humidifying and maintaining are carried out through a high-pressure micro-mist humidifier.
Has the advantages that: the invention adopts the arc arch corrugated tiles, the tiles are tightly matched with each other, the symmetry is good, and the upper and lower tile surfaces can be paved not only in a straight line but also in a staggered way. The corrugated tile not only can embody the style of modern buildings, but also can embody the elegance of classical Chinese buildings. Because the invention adopts the muck as the main material and is easy to soften when meeting water, the muck is improved by adopting cement, additional modifier and construction regenerated stone powder as raw materials, and the structural stability of the pantile is enhanced. And the engineering slag soil baking-free corrugated tile in the raw materials has reliable mechanical strength and low cost. The method is simple in preparation process, strong in controllability and suitable for large-scale production.
Drawings
FIG. 1 is a flow chart of a modified engineering muck baking-free pantile preparation process.
Detailed Description
The invention is further described with reference to the following figures and detailed description:
as shown in fig. 1, the specific preparation process of the modified engineering slag soil baking-free pantile comprises the following steps:
the first step is as follows: under indoor natural conditions, adding 30 parts of fly ash, 10 parts of sodium silicate, 10 parts of sodium carbonate and 20 parts of naphthalenesulfonate water reducer into a stirring machine in sequence by mass, stirring for 2min at a stirring speed of 70rpm, and fully stirring to obtain modified additional powder.
The second step is that: and sequentially adding the cement, the engineering residue soil, the construction regenerated stone powder and the modified additional powder into a stirring machine for dry mixing, wherein the stirring time is 3min.
Specifically, ordinary portland cement of grade 42.5 was used as the cement used.
Specifically, engineering slag soil which is dried until the water content is below 10% is adopted and put into a crusher to be crushed, and the part with the particle size below 2.5mm is taken.
Specifically, the regenerated building stone powder with the particle size of 0.25-0.5mm is adopted.
The third step: adding city tap water to carry out wet mixing on the basis of dry mixing, wherein the stirring time is 5min, and the stirring speed is 70rpm.
The fourth step: and (3) conveying the mixture subjected to final wet mixing into a tile making machine by using a conveying belt for preparation, wherein the pressure value during preparation is 20MPa. And curing the formed modified engineering slag soil baking-free corrugated tile for 3 days in an environment with the relative humidity of 40-60%, and curing for 28 days in an environment with the relative humidity of more than 80%.
The engineering muck baking-free corrugated tile can be used for paving wall surfaces as decorative materials, adopts the corrugated tile in appearance, and not only can embody the style of modern buildings, but also can embody the elegance of classical Chinese buildings. The width of the corrugated tile should be greater than 200mm, and the specific width of the tile is not limited by the invention.
The following are specific embodiments:
the first embodiment is as follows:
and (2) sequentially adding 16 parts of cement, 80 parts of engineering residue soil and 28 parts of construction regenerated stone powder into a stirring machine according to the parts by mass for dry mixing, wherein the stirring time is 3min, and the stirring speed is 70rpm. Specifically, ordinary portland cement of grade 42.5 is used. Drying the engineering muck until the water content is below 10%, putting the engineering muck into a crusher for crushing, and taking the part with the particle size of below 2.5 mm. The particle size of the regenerated building stone powder is 0.25-0.5mm.
And adding 16 parts by mass of urban tap water into the dry-mixed mixture for wet mixing, wherein the stirring time is 5min, and the stirring speed is 70rpm.
And (3) conveying the mixture subjected to final wet mixing into a tile making machine by using a conveying belt for preparation, wherein the pressure value during preparation is 20MPa, and the coverage width is 300mm. And curing the formed engineering slag soil baking-free corrugated tile for 3 days in an environment with the relative humidity of 40-60%, and curing for 28 days in an environment with the relative humidity of more than 80%.
The unfired pantile prepared in the example is measured according to the bearing capacity standard value, the bearing capacity after freeze-thaw cycle, the water absorption rate and the impermeability test method in GB 50345-2012, and the measurement data is shown in table 1.
The second embodiment:
under indoor natural conditions, adding 30 parts of fly ash, 10 parts of sodium silicate, 10 parts of sodium carbonate and 20 parts of naphthalenesulfonate water reducer into a stirring machine in sequence by mass, stirring for 2min at a stirring speed of 70rpm, and fully stirring to obtain modified additional powder.
And sequentially adding 16 parts of cement, 80 parts of engineering muck, 28 parts of construction regenerated stone powder and 3 parts of modified admixture into a stirring machine for dry mixing according to the parts by mass, wherein the stirring time is 2min, and the stirring speed is 70rpm. Specifically, ordinary portland cement of grade 42.5 is used. Drying the engineering muck until the water content is below 10%, putting the engineering muck into a crusher for crushing, and taking the part with the particle size of below 2.5 mm. The particle size of the regenerated building stone powder is 0.25-0.5mm.
And adding 16 parts by mass of urban tap water into the dry-mixed mixture for wet mixing, wherein the stirring time is 5min, and the stirring speed is 70rpm.
And (3) conveying the mixture subjected to final wet mixing into a tile making machine by using a conveying belt for preparation, wherein the pressure value during preparation is 20MPa, and the coverage width is 300mm. And curing the formed engineering slag soil baking-free corrugated tile for 3 days in an environment with the relative humidity of 40-60%, and then curing the engineering slag soil baking-free corrugated tile for 28 days in an environment with the relative humidity of more than 80%.
The unfired pantile prepared in the example is measured according to a bearing capacity standard value, a bearing capacity after freeze-thaw cycle, water absorption and impermeability test method in GB 50345-2012, and the measurement data is shown in table 1.
Example three:
under indoor natural conditions, adding 30 parts of fly ash, 10 parts of sodium silicate, 10 parts of sodium carbonate and 20 parts of naphthalenesulfonate water reducer into a stirring machine in sequence by mass, stirring for 2min at a stirring speed of 70rpm, and fully stirring to obtain modified additional powder.
20 parts of cement, 80 parts of engineering muck, 32 parts of construction regenerated stone powder and 3 parts of modified admixture are sequentially added into a stirring machine for dry mixing according to the parts by weight, the stirring time is 2min, and the stirring speed is 70rpm. Specifically, ordinary portland cement of grade 42.5 is used. Drying the engineering slag soil until the water content is below 10%, and crushing the engineering slag soil in a crusher to obtain the part with the particle size of below 2.5 mm. The particle size of the construction regenerated stone powder is 0.25-0.5mm.
And adding 16 parts by mass of city tap water into the mixture for wet mixing on the basis of dry mixing, wherein the stirring time is 5min, and the stirring speed is 70rpm.
And (3) conveying the mixture subjected to final wet mixing into a tile making machine by using a conveying belt for preparation, wherein the pressure value during preparation is 20MPa, and the coverage width is 300mm. And curing the formed engineering slag soil baking-free corrugated tile for 3 days in an environment with the relative humidity of 40-60%, and curing for 28 days in an environment with the relative humidity of more than 80%.
The unfired pantile prepared in the example is measured according to the bearing capacity standard value, the bearing capacity after freeze-thaw cycle, the water absorption rate and the impermeability test method in GB 50345-2012, and the measurement data is shown in table 1.
Example four:
under indoor natural conditions, adding 30 parts of fly ash, 10 parts of sodium silicate, 10 parts of sodium carbonate and 20 parts of naphthalenesulfonate water reducer into a stirring machine in sequence by mass, stirring for 2min at a stirring speed of 70rpm, and fully stirring to obtain modified additional powder.
And sequentially adding 24 parts of cement, 80 parts of engineering residue soil, 30 parts of construction regenerated stone powder and 3 parts of modified additive into a stirring machine for dry mixing according to the parts by weight, wherein the stirring time is 2min, and the stirring speed is 70rpm. Specifically, ordinary portland cement of grade 42.5 is used. Drying the engineering muck until the water content is below 10%, putting the engineering muck into a crusher for crushing, and taking the part with the particle size of below 2.5 mm. The particle size of the regenerated building stone powder is 0.25-0.5mm.
And adding 16 parts by mass of urban tap water into the dry-mixed mixture for wet mixing, wherein the stirring time is 5min, and the stirring speed is 70rpm.
And (3) conveying the mixture subjected to final wet mixing into a tile making machine by using a conveying belt for preparation, wherein the pressure value during preparation is 20MPa, and the coverage width is 300mm. And curing the formed engineering slag soil baking-free corrugated tile for 3 days in an environment with the relative humidity of 40-60%, and then curing the engineering slag soil baking-free corrugated tile for 28 days in an environment with the relative humidity of more than 80%.
The unfired pantile prepared in the example is measured according to a bearing capacity standard value, a bearing capacity after freeze-thaw cycle, water absorption and impermeability test method in GB 50345-2012, and the measurement data is shown in table 1.
Table 1 determination of strength of baking-free pantile from modified engineering muck
From the above table, it can be seen that:
in the second embodiment, the third embodiment and the fourth embodiment, the standard bearing capacity value is obviously improved along with the increase of the cement amount, wherein the standard bearing capacity value meets the specification requirements. The difference between the two phases of examples and the first phase of examples is that whether the modified admixture is added or not, namely the bearing capacity standard value of the slag pantile added with the modified admixture is higher than that of the comparative group of the slag pantile added with the modified admixture in the second phase of examples, and the water absorption of the slag pantile added with the modified admixture in the second to fourth phases of examples is obviously lower than that of the first phase of examples, which shows that the modified admixture remarkably optimizes the permeability performance of the slag pantile.
In conclusion, the method for preparing the engineering muck unfired pantile adopts cement, engineering muck, an additional modifier and building stone powder as raw materials to prepare the pantile, and the cement improves the mechanical strength of the muck pantile and reduces deformation. The use of the engineering muck not only reduces the cost, but also utilizes the waste to protect the environment. The modifier is added, so that the residue soil non-fired corrugated tile still has higher strength after being soaked in water, the seepage-proofing performance of the residue soil corrugated tile is enhanced, and the residue soil non-fired corrugated tile is not easy to crack. The method has the advantages of simple preparation process and strong controllability, and is suitable for large-scale production.
The above-described embodiments are not all embodiments, because the raw material ratios of the pantile can be arbitrarily combined, not all of them are listed, and it should be within the scope of the description. The preparation process of the present invention is described in detail with reference to the drawings, but the present invention is not limited to the preparation process described above. Wherein various changes, modifications, substitutions and alterations to the process described herein will occur to those skilled in the art without departing from the spirit and scope of the invention.
Claims (8)
1. The baking-free corrugated tile of the engineering muck is characterized in that: the manufacturing method of the engineering muck baking-free pantile comprises the following raw materials in parts by mass:
24 parts of cement
80 portions of engineering dregs
30 portions of construction regenerated stone powder
3 parts of a modified additive;
the raw materials of the modified additive are prepared from 3;
the raw materials for manufacturing the modified additive are powder, and the water reducing agent in the modified additive is a naphthalene sulfonate water reducing agent.
2. The engineering muck unfired pantile as claimed in claim 1, wherein: drying the engineering muck until the water content is below 10%, and then putting the engineering muck into a crusher for crushing, wherein the part with the particle size of below 2.5mm is taken.
3. The engineering muck unfired pantile as claimed in claim 1, wherein: the particle size of the regenerated building stone powder is 0.25-0.5mm.
4. The engineering muck unfired pantile as claimed in claim 1, wherein: the cement is ordinary Portland cement with the grade of 42.5.
5. The process for preparing the engineering slag soil baking-free pantile as claimed in claim 1, 2, 3 or 4, wherein: the method comprises the following steps: (1): firstly, weighing fly ash, sodium silicate, sodium carbonate, a water reducing agent, cement, engineering slag soil and construction regenerated stone powder in corresponding parts by weight for later use; (2): stirring and mixing the fly ash, the sodium silicate, the sodium carbonate and the water reducing agent in the step (1), and obtaining a modified additive after stirring; (3): putting the cement, the engineering residue soil, the construction regenerated stone powder weighed in the step (1) and the modified admixture mixed in the step (2) into a stirring machine for stirring and dry mixing for 2-4min, and then adding water into the stirring machine for continuously carrying out wet mixing and stirring for 5-6min; (4): vibrating, pressurizing and molding the raw materials subjected to wet mixing in the step (3); (5): and (5) curing the material formed in the step (4), wherein in the curing process, the material is cured for 3 days in an environment with the relative humidity of 40-60%, and after the curing, the material is transferred to an environment with the relative humidity of more than 80% and cured for 28 days to obtain the baking-free corrugated tile of the engineering muck.
6. The preparation process of the engineering muck baking-free pantile as claimed in claim 5, wherein the preparation process comprises the following steps: and (4) the pressure value of the tile making machine in the pressure forming process in the step (4) is 20MPa.
7. The process for preparing the engineering muck unfired pantile as claimed in claim 5, wherein the process comprises the following steps: and (4) adding water in the wet mixing in the step (3) into city tap water.
8. The process for preparing the engineering muck unfired pantile as claimed in claim 5, wherein the process comprises the following steps: and (5) humidifying and maintaining through a high-pressure micro-mist humidifier.
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| 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 |
| CN113771203A (en) * | 2021-09-27 | 2021-12-10 | 福建环球之源环保科技有限公司 | Solid waste soil regenerated particle production system and use method thereof |
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| CN103496896A (en) * | 2013-09-18 | 2014-01-08 | 安固环保科技有限公司 | Non-sintered slag soil wall body block and preparation process thereof |
| CN108585652A (en) * | 2018-07-20 | 2018-09-28 | 思力佳特种环保材料（深圳）有限公司 | A kind of regeneration activity material, preparation method and environmental protection brick based on mud dregs |
| CN109020318B (en) * | 2018-08-17 | 2021-07-02 | 北京建工资源循环利用投资有限公司 | Baking-free solid brick utilizing redundant soil of construction waste and preparation method thereof |
| CN108793891A (en) * | 2018-08-21 | 2018-11-13 | 重庆大学 | A kind of method that new curing architecture sediment prepares unburned product |
| CN111205057A (en) * | 2020-01-16 | 2020-05-29 | 深圳港创建材股份有限公司 | Pressure forming brick prepared from building residue soil and preparation method thereof |
| CN111620622A (en) * | 2020-05-13 | 2020-09-04 | 深圳市为海建材有限公司 | Green polymer concrete recycled brick and preparation method thereof |
| CN112521096A (en) * | 2020-12-16 | 2021-03-19 | 西安市政道桥建设有限公司 | Slag soil baking-free brick and preparation method thereof |
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