CN112723793A - Fair-faced wall brick taking engineering waste soil as raw material and preparation method thereof - Google Patents
Fair-faced wall brick taking engineering waste soil as raw material and preparation method thereof Download PDFInfo
- Publication number
- CN112723793A CN112723793A CN202110077235.0A CN202110077235A CN112723793A CN 112723793 A CN112723793 A CN 112723793A CN 202110077235 A CN202110077235 A CN 202110077235A CN 112723793 A CN112723793 A CN 112723793A
- Authority
- CN
- China
- Prior art keywords
- waste soil
- engineering waste
- brick
- amino
- raw material
- Prior art date
- 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
Links
Images
Classifications
-
- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/30—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds
- C04B26/32—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds containing silicon
-
- 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
-
- 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
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a dry wall brick taking engineering waste soil as a raw material, and relates to the technical field of chemical building materials. The material composition comprises, by weight, 2-5 parts of amino-terminated hyperbranched polysiloxane, 80-110 parts of engineering waste soil and 10-30 parts of E51 type epoxy resin. The dry wall brick prepared by the invention and taking the engineering waste soil as the raw material has good corrosion resistance, excellent heat-resistant flame-retardant property and simple and controllable preparation process.
Description
Technical Field
The invention relates to the technical field of chemical building materials, in particular to a dry wall brick taking engineering waste soil as a raw material and a preparation method thereof.
Background
With the rapid development of social economy, the urban expansion is also continuously carried out, and a new vitality is brought to the urban development and construction. However, the increase of construction projects also causes the rapid increase of the output quantity of the construction waste soil in cities, so that the construction waste soil is effectively treated and utilized while the cities are rapidly developed, and the environmental and land use pressure can be reduced.
At present, most of buildings in China are frame structures, wall materials usually adopt sintered hollow blocks, cement blocks, ceramsite blocks, aerated concrete blocks, partition boards and the like, and in order to preserve heat and save energy, an exterior wall external heat preservation energy-saving system is adopted for an enclosure structure, and meanwhile, facing bricks or coatings are used for decoration. However, the heat-insulating material has the defects of short service life, easy shedding of the facing brick, large fire hazard and the like. To ameliorate these disadvantages of insulation, in recent years, conventional exterior insulation systems have been replaced by dry brick walls. The dry wall brick can be used as a single-layer brick body outer wall or a composite layer outer wall, can also be used for indoor decorative walls except bedrooms, and can be particularly made into a masonry structure form of a double-layer composite outer wall system integrating bearing and heat insulation performance.
In order to effectively treat and utilize the engineering waste soil and reduce the use pressure of the environment and the land, the wall brick taking the engineering waste soil as the raw material has important social significance and economic value.
Disclosure of Invention
The invention aims to solve the defects in the background technology and provides a fair-faced wall brick taking engineering waste soil as a raw material and a preparation method thereof, the invention carries out chemical composition and radioactivity detection on the engineering waste soil on the basis of summarizing and analyzing the aspects of waste soil types, material composition, utilization potential evaluation and the like, selects soil with radioactivity specific activity indexes meeting the limit regulation of A type building materials in GB6566 as the raw material, takes novel amino-terminated hyperbranched polysiloxane as a curing agent or a modification auxiliary agent, prepares the novel fair-faced wall brick by a pressing and high-temperature sintering forming method, effectively reduces the waste soil generation for production and construction units and related administrative management departments, provides scientific guidance for realizing resource recycling, and has wide application prospects in the aspects of environmental management, resource recycling and the like.
The invention provides a fair-faced wall brick taking engineering waste soil as a raw material, which comprises the following raw materials, by weight, 2-5 parts of amino-terminated hyperbranched polysiloxane, 80-110 parts of engineering waste soil and 10-30 parts of E51 type epoxy resin.
Preferably, the water content of the engineering waste soil is less than or equal to 13%, the pH value is 5-8, the heavy metal content is less than or equal to 3%, and the sand content is less than or equal to 10%.
Preferably, the amino-terminated hyperbranched polysiloxane has a chemical structural formula:
more preferably, the amino-terminated hyperbranched polysiloxane is prepared according to the following steps:
taking silane coupling agent KH-792 and neopentyl glycol as raw materials, taking p-toluenesulfonic acid as a catalyst, uniformly mixing, stirring at 100 ℃ for 2h in nitrogen or inert atmosphere, continuously heating to 170 ℃ for reaction until the obtained byproduct ethanol is completely evaporated, and drying to obtain the amino-terminated hyperbranched polysiloxane.
More preferably, the coupling agent KH-792 and neopentyl glycol are present in a 2:3 molar ratio.
The second purpose of the invention is to provide a preparation method of the dry wall brick taking engineering waste soil as a raw material, which comprises the following steps:
adding water into the engineering waste soil, uniformly stirring, sequentially adding E51 type epoxy resin and amino-terminated hyperbranched polysiloxane, uniformly mixing, making a blank, curing at 110-130 ℃, and roasting at 1100-130 ℃ for 1-2 h to obtain the water brick wall.
Preferably, the addition amount of the water is 10-20% of the total weight of the engineering waste soil, the E51 type epoxy resin and the amino-terminated hyperbranched polysiloxane.
Preferably, the blank making is to press a mixture obtained by mixing the raw materials with water into a blank body with a certain size under the pressure of 5-10 MPa.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, on the basis of summarizing and analyzing the aspects of the types, the material compositions, the utilization potential evaluation and the like of the waste soil, the chemical components and the radioactivity of the engineering waste soil are detected, the soil with the radioactivity specific activity index meeting the limit value regulation of the A-type building material in GB6566 is selected as a raw material, the novel amino-terminated hyperbranched polysiloxane is used as a curing agent or a modification auxiliary agent, and the novel drywall brick is prepared by pressing and high-temperature sintering molding, so that scientific guidance is provided for effectively reducing the waste soil generation and realizing the resource recycling of production and construction units and relevant administrative departments, and the novel drywall brick has wide application prospects in the aspects of environmental management, resource recycling and the like.
The addition of the amino-terminated hyperbranched polysiloxane can effectively promote the curing of the epoxy resin, so that the engineering waste soil and the epoxy resin are well blended, and the smoothness, the corrosion resistance, the heat resistance and the flame resistance of the drywall brick are greatly improved. The epoxy resin and the amino-terminated hyperbranched polysiloxane are added to ensure that the epoxy resin and the amino-terminated hyperbranched polysiloxane show good synergistic effect in the preparation process of the drywall brick.
The dry wall brick prepared by the invention and taking the engineering waste soil as the raw material has good corrosion resistance, excellent heat-resistant flame-retardant property and simple and controllable preparation process.
Drawings
FIG. 1 is an infrared spectrum of amino-terminated hyperbranched polysiloxane used in the examples.
Detailed Description
In order to make the technical solutions of the present invention better understood and implemented by those skilled in the art, the present invention is further described below with reference to the following specific embodiments and the accompanying drawings, but the embodiments are not meant to limit the present invention.
It should be noted that the experimental methods described in the following examples are all conventional methods unless otherwise specified; the reagents and materials used are commercially available, unless otherwise specified.
The amino-terminated hyperbranched polysiloxanes used in the following examples were prepared by the following steps:
a silane coupling agent KH-792 and neopentyl glycol in a molar ratio of 2:3 were weighed into a 100mL three-necked flask equipped with a stirring paddle and a thermometer, and p-toluenesulfonic acid was added as a catalyst. Stirring the reactants at 100 ℃ for 2h, introducing nitrogen or inert gas in the reaction process, slowly raising the temperature to 170 ℃ until a byproduct ethanol is completely distilled out, cooling the obtained mixture to room temperature, and carrying out vacuum drying at 60 ℃ for 5h to obtain a light yellow viscous liquid product, namely the amino-terminated hyperbranched polysiloxane. See FIG. 1 for an IR spectrum.
Example 1
The raw material components of the brick are 5 parts of amino-terminated hyperbranched polysiloxane, 80 parts of engineering waste soil and 30 parts of E51 type epoxy resin by weight.
The dry wall brick is prepared by the following steps:
adding 100 parts of engineering waste soil meeting the limit of the class A building materials in GB6566 into water (60ml/kg), uniformly stirring, adding 30 parts of E51 type epoxy resin, adding 5 parts of amino-terminated hyperbranched polysiloxane into the mixture, performing semi-dry pressing forming under the condition of applying 5MPa of pressure, controlling the size of a blank to be 130 x 70mm, curing the blank at 120 ℃, roasting by a program-controlled muffle furnace after drying, controlling the temperature to be 1200 ℃, and preserving heat for 2 hours to obtain the novel dry brick wall.
Example 2
The plain wall brick with engineering waste soil as material consists of amino terminated super branched polysiloxane 3 weight portions, engineering waste soil 100 weight portions and E51 type epoxy resin 15 weight portions.
Adding 100 parts of engineering waste soil meeting the limit of the class A building materials in GB6566 into water (60ml/kg), uniformly stirring, adding 15 parts of E51 type epoxy resin, adding 3 parts of amino-terminated hyperbranched polysiloxane into the mixture, performing semi-dry pressing under the condition of applying 5MPa of pressure, controlling the size of a blank to be 130 x 70mm, curing the blank at 130 ℃, roasting by a program-controlled muffle furnace after drying, controlling the temperature to be 1100 ℃, and preserving heat for 2 hours to obtain the novel dry brick wall.
Example 3
The plain wall brick with engineering waste soil as material consists of amino terminated super branched polysiloxane 2 weight portions, engineering waste soil 110 weight portions and E51 type epoxy resin 10 weight portions.
Adding 100 parts of engineering waste soil meeting the limit of the class A building materials in GB6566 into water (60ml/kg), uniformly stirring, adding 10 parts of E51 type epoxy resin, adding 2 parts of amino-terminated hyperbranched polysiloxane into the mixture, performing semi-dry pressing forming under the condition of applying 5MPa of pressure, controlling the size of a blank to be 130 x 70mm, curing the blank at 110 ℃, roasting by a program-controlled muffle furnace after drying, controlling the temperature to be 1300 ℃, and preserving heat for 1h to obtain the novel dry brick wall.
Comparative example 1
The procedure was as in example 1, except that the E51 type epoxy resin was not added to the raw material components.
Comparative example 2
The same as in example 1, except that no amino-terminated hyperbranched polysiloxane was added to the starting components.
To illustrate the relevant performance of the drywall brick made of the engineering waste soil provided by the present invention, only the drywall brick made of the engineering waste soil provided in example 2 was tested, and the result was that the drywall brick provided in example 2 had a compressive strength of 1132MPa and a density of 983Kg/m3The radioactivity index is 0.3, the surface friction coefficient is 0.326, the flame retardant grade is V-1, and the coating can resist concentrated acid and strong base at the temperature of 80 ℃.
In order to further illustrate the drywall brick using the engineering waste soil as the raw material, see comparative examples 1-2, materials of amino-terminated hyperbranched polysiloxane and epoxy resin are respectively added, and the breaking strength of the wall of the prepared drywall brick is 768MPa and 923MPa respectively, so that the mechanical property of the drywall brick obtained by the synergistic effect of the amino-terminated hyperbranched polysiloxane, the epoxy resin and the engineering waste soil is better than that of the drywall brick prepared by singly adding the amino-terminated hyperbranched polysiloxane and the epoxy resin into the engineering waste soil.
The invention selects the building waste soil as the raw material, prepares the materials such as novel clear water brick walls and the like by simple and feasible methods such as treatment, modification and the like on the basis of summarizing and analyzing the aspects of waste soil types, substance composition, utilization potential evaluation and the like, effectively realizes the comprehensive utilization of the engineering waste soil, achieves the aim of reducing the damage of ecological resources, achieves the resource recycling of the engineering waste soil, reduces the environmental pollution and the land occupation of a waste soil absorption field, has good social, economic and environmental benefits, and has higher theoretical significance and wide application prospect.
The E51 type epoxy resin adopted by the invention belongs to bisphenol A type epoxy resin, has the advantages of strong adhesive force, low viscosity, high toughness, small contraction force and the like, simultaneously shows excellent mechanical property, chemical resistance and heat resistance, can be cured at room temperature or higher temperature, can effectively recover the integrity of a structure, has sealing and seepage-proofing effects, has good appearance of the reinforced structure, and has the advantages of simple and convenient method, high speed, low cost, good comprehensive economic effect and the like when being used for preparing the plain wall brick.
The selected amino-terminated hyperbranched polysiloxane is prepared by an ester exchange method, the method is simple and feasible, and simultaneously, the tail end of the polysiloxane contains active amino, so that the curing of epoxy resin can be effectively promoted, and the material is endowed with good toughness, flame retardance and high temperature resistance.
The resource utilization of the engineering waste soil and the waste slag selected by the invention is a huge economic benefit for society, and for a construction unit, no matter a self-built slag yard or the outward transportation of the waste slag, or the purchasing of soil and stone resources, the process is complex and the expenditure needs to be paid. The engineering waste soil resources are uniformly recovered and reprocessed to obtain a new soil resource product, so that economic benefits can be created, land upgrading can be realized, and a certain economic benefit can be brought to companies and cities while huge indirect benefits are created. The invention selects the building waste soil as a raw material, carries out chemical composition and radioactivity detection on the engineering waste soil on the basis of summarizing and analyzing the aspects of waste soil types, material compositions, utilization potential evaluation and the like, selects soil with radioactivity specific activity indexes meeting the limit value of A building materials in GB6566, prepares novel amino-terminated hyperbranched polysiloxane as a curing agent and a modification auxiliary agent for use, and prepares the novel fair-faced wall brick by pressing and high-temperature sintering molding.
The present invention describes preferred embodiments and effects thereof. Additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The exposed wall brick is characterized by comprising the following raw materials, by weight, 2-5 parts of amino-terminated hyperbranched polysiloxane, 80-110 parts of engineering waste soil and 10-30 parts of E51 type epoxy resin.
2. The drywall brick made of the engineering waste soil as claimed in claim 1, wherein the water content of the engineering waste soil is less than or equal to 13%, the pH value is 5-8, the heavy metal content is less than or equal to 3%, and the sand content is less than or equal to 10%.
3. The drywall brick made of the engineering waste soil as claimed in claim 1, wherein the amino-terminated hyperbranched polysiloxane has a chemical structural formula:
4. the drywall brick made of the engineering waste soil as the raw material according to claim 3, wherein the amino-terminated hyperbranched polysiloxane is prepared by the following steps:
taking silane coupling agent KH-792 and neopentyl glycol as raw materials, taking p-toluenesulfonic acid as a catalyst, uniformly mixing, stirring at 100 ℃ for 2h in nitrogen or inert atmosphere, continuously heating to 170 ℃ for reaction until the obtained byproduct ethanol is completely evaporated, and drying to obtain the amino-terminated hyperbranched polysiloxane.
5. The drywall brick of claim 4, wherein the coupling agent is KH-792 and neopentyl glycol in a molar ratio of 2: 3.
6. The preparation method of the drywall brick made of the engineering waste soil as the raw material according to any one of claims 1 to 5, characterized by comprising the following steps:
adding water into the engineering waste soil, uniformly stirring, sequentially adding E51 type epoxy resin and amino-terminated hyperbranched polysiloxane, uniformly mixing, making a blank, curing at 110-130 ℃, and roasting at 1100-130 ℃ for 1-2 h to obtain the water brick wall.
7. The method for preparing the drywall brick with the engineering waste soil as the raw material according to claim 6, wherein the addition amount of the water is 10-20% of the total weight of the engineering waste soil, the E51 type epoxy resin and the amino-terminated hyperbranched polysiloxane.
8. The preparation method of the drywall brick with the engineering waste soil as the raw material according to claim 6, wherein the blank making is to press the mixture of the raw material and water under the pressure of 5-10 MPa into a blank body with a certain size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110077235.0A CN112723793A (en) | 2021-01-20 | 2021-01-20 | Fair-faced wall brick taking engineering waste soil as raw material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110077235.0A CN112723793A (en) | 2021-01-20 | 2021-01-20 | Fair-faced wall brick taking engineering waste soil as raw material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112723793A true CN112723793A (en) | 2021-04-30 |
Family
ID=75593662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110077235.0A Pending CN112723793A (en) | 2021-01-20 | 2021-01-20 | Fair-faced wall brick taking engineering waste soil as raw material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112723793A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491723A (en) * | 2011-11-11 | 2012-06-13 | 上海鑫晶山建材开发有限公司 | Slickens baked brick and production method thereof |
| CN106116628A (en) * | 2016-06-23 | 2016-11-16 | 福鼎市利民城市建筑垃圾处理有限公司 | A kind of self-insulation baked brick and preparation method thereof |
| CN106746958A (en) * | 2016-11-25 | 2017-05-31 | 四川菱通智能环保产业有限公司 | The preparation method that hollow concrete is laid bricks is prepared using discarded concrete |
| CN108017376A (en) * | 2017-11-22 | 2018-05-11 | 海城利尔麦格西塔材料有限公司 | A kind of magnesia carbon brick and its production method |
-
2021
- 2021-01-20 CN CN202110077235.0A patent/CN112723793A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491723A (en) * | 2011-11-11 | 2012-06-13 | 上海鑫晶山建材开发有限公司 | Slickens baked brick and production method thereof |
| CN106116628A (en) * | 2016-06-23 | 2016-11-16 | 福鼎市利民城市建筑垃圾处理有限公司 | A kind of self-insulation baked brick and preparation method thereof |
| CN106746958A (en) * | 2016-11-25 | 2017-05-31 | 四川菱通智能环保产业有限公司 | The preparation method that hollow concrete is laid bricks is prepared using discarded concrete |
| CN108017376A (en) * | 2017-11-22 | 2018-05-11 | 海城利尔麦格西塔材料有限公司 | A kind of magnesia carbon brick and its production method |
Non-Patent Citations (3)
| Title |
|---|
| JIA YUAN等: "Synthesis of a novel hyperbranched polysiloxane with amidogen groups and the characteristics of a polymer alloy blend with bismaleimide resin", 《HIGH PERFORMANCE POLYMERS》 * |
| 董佳民等: "《高校建筑消防（上、下卷）》", 31 December 2011, 青岛出版社 * |
| 陈建强等: "利用建筑渣土制备烧结普通砖的试验研究", 《青岛理工大学学报》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101428994B (en) | Plant fiber and cement enhanced light thermal insulation raw soil material | |
| CN104944862B (en) | Energy-saving wall material produced by using construction solid wastes and producing method of wall material | |
| CN105110720A (en) | Modified building residue baking-free brick | |
| CN106365679B (en) | A kind of light cellular partition board and preparation method thereof | |
| CN110981349A (en) | Light high-strength muck-based thermal insulation material and preparation method thereof | |
| CN102875069B (en) | Preparation process for aerated concrete block with raw materials containing modified nano mineral powder | |
| CN109944382A (en) | A kind of self-heat conserving TRC combined wall and preparation method thereof | |
| CN108238811A (en) | A kind of preparation method of foamed ceramic plates | |
| CN103992066B (en) | A kind of antistripping aerated bricks and preparation method thereof | |
| CN104150838A (en) | Sisal fiber enhanced coral concrete and preparation method thereof | |
| CN104609817A (en) | High temperature-resistant and high-toughness aerated brick and preparation method thereof | |
| CN111635189A (en) | Energy-saving environment-friendly light wallboard and preparation method thereof | |
| CN103833306B (en) | A kind of anticorrosion aerated bricks and preparation method thereof | |
| CN103992083B (en) | A kind of grain slag high strength aerated bricks and preparation method thereof | |
| CN109437755A (en) | Prefabricated board and its preparation method and application | |
| CN112723793A (en) | Fair-faced wall brick taking engineering waste soil as raw material and preparation method thereof | |
| CN103992084A (en) | High-toughness aerated brick and making method thereof | |
| CN110981305A (en) | Light insulating brick for building wall and preparation method thereof | |
| CN105735545A (en) | Construction method for constructing light-steel building floor with industrial by-product gypsum as binding material | |
| CN102407560A (en) | Method for preparing composite light-weight wallboard by utilizing nonmetal materials of waste electronic circuit boards | |
| CN109437802A (en) | A kind of sulphate aluminium cement assembled integrated interior wall and preparation method thereof | |
| CN113603448A (en) | Method for preparing green decorative material by utilizing heat-treated and mechanically activated coal gangue | |
| CN107382189A (en) | Composite foam concrete plate and its production method | |
| CN110272261B (en) | Fireproof heat-insulating material and preparation method thereof | |
| CN103880348B (en) | A kind of raw material aerated bricks containing nano-silicon and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |