CN111116122A - Solid waste concrete stone, steel slag permeable brick based on solid waste concrete stone and preparation method of steel slag permeable brick - Google Patents
Solid waste concrete stone, steel slag permeable brick based on solid waste concrete stone and preparation method of steel slag permeable brick Download PDFInfo
- Publication number
- CN111116122A CN111116122A CN202010012649.0A CN202010012649A CN111116122A CN 111116122 A CN111116122 A CN 111116122A CN 202010012649 A CN202010012649 A CN 202010012649A CN 111116122 A CN111116122 A CN 111116122A
- Authority
- CN
- China
- Prior art keywords
- steel slag
- solid waste
- waste concrete
- parts
- concrete stone
- 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
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
- 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
-
- 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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
-
- 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
- C04B2111/2038—Resistance against physical degradation
-
- 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
- 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- 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)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to solid waste concrete stone, a steel slag permeable brick based on the solid waste concrete stone and a preparation method thereof, wherein the solid waste concrete stone comprises the following raw material components: 50-70 parts of steel slag, 20-40 parts of alkaline residue and 5-15 parts of cement. The solid waste concrete stone provided by the invention is used as coarse aggregate for preparing the steel slag permeable brick, so that the expansion problem in the production of the steel slag permeable brick is effectively solved, the prepared steel slag permeable brick has high strength, good heat preservation property and excellent freezing resistance and fire resistance, and the steel slag permeable brick can be produced in batches.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to solid waste concrete stones, a steel slag permeable brick based on the solid waste concrete stones and a preparation method thereof.
Background
CN102850025A discloses a method for producing a water permeable brick for a pavement by using steel slag, and specifically discloses a) screening the steel slag from a slag yard after being subjected to wheel-method water quenching granulation, wherein the steel slag with the size of more than 5mm is directly used as aggregate, the steel slag with the size of less than 5mm is used as a cementing material, and the mixing amount of the steel slag aggregate can reach more than 70%; b) drying the raw materials until the water content is 0.01-1%; grinding the steel slag powder with the diameter less than 5mm into the steel slag powder with the specific surface area of 400m2After/kg of micro powder, adding cement clinker, gypsum and slag micro powder as cementing materials for mixed grinding, wherein the mixture ratio is as follows: 70-80% of steel slag aggregate; 10-20% of slag micropowder; 5-10% of steel slag micro powder; 3-5% of cement clinker; 2-5% of desulfurized gypsum; c) adding water into the steel slag aggregate and the cementing material according to the water-cement ratio of 0.25-0.35, stirring, loading the mixed material into a die, mechanically tamping, pressurizing, finally molding and pressing, and carrying out water spray curing on the steel slag permeable brick for 5 hours. Although the steel slag adopted by the patent is subjected to wheel water quenching, the expansion in the production of the water permeable brick is reduced to a certain extent, the problem of expansion still cannot be thoroughly solved, and the strength, the heat preservation, the freezing resistance and the fire resistance of the prepared water permeable brick are further improved.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the solid waste concrete stone and the method for preparing the steel slag water permeable brick by using the solid waste concrete stone as the coarse aggregate, the prepared steel slag water permeable brick thoroughly solves the expansion problem and has the characteristics of high strength, good heat preservation, frost resistance and excellent fire resistance.
The technical scheme of the invention is as follows:
a solid waste concrete stone comprises the following raw material components: 50-70 parts of steel slag, 20-40 parts of alkaline residue and 5-15 parts of cement.
Preferably, the raw material components of the solid waste concrete stone comprise: 60 parts of steel slag, 30 parts of alkaline residue and 10 parts of cement.
Preferably, the particle size of the alkaline residue is less than 1mm, and CaSO is contained in the alkaline residue3The content of (B) is more than 15 wt%.
The preparation method of the solid waste concrete stone comprises the following steps:
(1) crushing the steel slag to remove iron to obtain steel slag powder, and adding water into the steel slag powder to fully soak the steel slag powder to obtain pretreated steel slag;
(2) and fully mixing the pretreated steel slag, the alkaline residue and the cement, extruding the mixture into granular substances in a pressure forming machine, and curing to obtain the solid waste concrete stone.
Preferably, in the step (1), the steel slag powder has a particle size of less than 1mm, atomized water is sprayed while the steel slag powder is crushed, the weight ratio of the steel slag powder to the water is 1:0.8-1.2, and the steel slag powder is soaked in water serving as a main raw material for 6-8 months after preparation.
Preferably, in the step (2), the pressure of the pressure forming is 0.8-1.2MPa, and the pressure forming time is 15-25 min; the curing temperature is 20-25 ℃, the humidity is 85 +/-5% RH, and the curing time is 20-30 days; the particle size of the solid waste concrete stone is 3-10 mm.
The steel slag permeable brick comprising the solid waste concrete stone comprises the following raw material components: 60-70 parts of solid waste concrete stone, 5-15 parts of steel slag, 5-15 parts of alkaline residue, 5-15 parts of cement and 3-8 parts of salt residue.
Preferably, the particle size of the steel slag is less than 1mm, and CaSO is contained in the salt slag3The content of (B) is 60-70 wt%.
The preparation method of the steel slag permeable brick comprises the following specific steps: and stirring the solid waste concrete stone, the steel slag, the alkaline residue, the cement and the salt slag in a stirrer to be uniformly mixed, then forming in a vibration press, and curing to obtain the concrete.
Preferably, the stirring speed is 20-25m3The stirring time is 40-60 min;the forming pressure of the vibration press is 10-15MPa, and the forming time is 8-12 s; the curing temperature is 20-25 ℃, the humidity is 85 +/-5% RH, and the curing time is 20-30 days.
The invention has the beneficial effects that:
the solid waste concrete stone provided by the invention is used as coarse aggregate for preparing the steel slag permeable brick, so that the expansion problem in the production of the steel slag permeable brick is effectively solved, the prepared steel slag permeable brick has high strength, good heat preservation property and excellent freezing resistance and fire resistance, and the steel slag permeable brick can be produced in batches.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention. In the following examples, 1 part by weight represents 1 g.
Example 1
The embodiment provides a solid waste concrete stone, which comprises the following raw material components: 50 parts by weight of steel slag and caustic sludge (particle size of 0.5mm, CaSO)3The content is as follows: 15 wt%) 20 parts by weight, and cement 5 parts by weight.
Further, a method for preparing the solid waste concrete stone is provided, which comprises the following steps:
(1) crushing the steel slag to obtain steel slag powder with the particle size of 1mm, spraying atomized water (the ratio of the steel slag powder to the water is 1:0.8) into the steel slag powder while crushing, and soaking for 6 months to obtain pretreated steel slag;
(2) and (3) fully mixing the pretreated steel slag, the alkaline residue and the cement, extruding (0.8MPa for 25min) the mixture into granular substances with irregular shapes and particle sizes of 3-10mm in a pressure forming machine, and curing for 30 days at 20 ℃ and 80% RH to obtain the solid waste concrete stone.
Example 2
The embodiment provides a solid waste concrete stone, which comprises the following raw material components: steel slag 70 weight parts, alkaline residue (grain size 0.5mm, CaSO)3The content is as follows: 20 wt%) 40 parts by weight, and 15 parts by weight of cement.
Further, a method for preparing the solid waste concrete stone is provided, which comprises the following steps:
(1) crushing the steel slag to obtain steel slag powder with the particle size of 1mm, spraying atomized water (the ratio of the steel slag powder to the water is 1:1.2) into the steel slag powder while crushing, and soaking for 8 months to obtain pretreated steel slag;
(2) and (3) fully mixing the pretreated steel slag, the alkaline residue and the cement, extruding (1.2MPa for 15min) the mixture into granular substances with irregular shapes and the particle sizes of 3-10mm in a pressure forming machine, and curing for 20 days at 25 ℃ and 90% RH to obtain the solid waste concrete stone.
Example 3
The embodiment provides a solid waste concrete stone, which comprises the following raw material components: 60 parts by weight of steel slag and caustic sludge (particle size of 0.5mm, CaSO)3The content is as follows: 18 wt%) 30 parts by weight, and 10 parts by weight of cement.
Further, a method for preparing the solid waste concrete stone is provided, which comprises the following steps:
(1) crushing the steel slag to obtain steel slag powder with the particle size of 1mm, spraying atomized water (the ratio of the steel slag powder to the water is 1:1.02) into the steel slag powder while crushing, and soaking for 7 months to obtain pretreated steel slag;
(2) and (3) fully mixing the pretreated steel slag, the alkaline residue and the cement, extruding (1MPa for 20min) the mixture into granular substances with the particle size of 3-10mm and irregular shapes in a pressure forming machine, and curing for 28 days at 20 ℃ and 90% RH to obtain the solid waste concrete stone.
Example 4
The embodiment provides a steel slag permeable brick, which comprises the following raw material components: example 1 solid waste concrete 60 parts by weight, Steel slag (particle size 0.5mm)5 parts by weight, and alkali slag 5 parts by weightWeight portions, 5 portions of cement and salt slag (CaSO)3Content 60 wt.%) 3 parts by weight.
Further, a method for preparing the steel slag permeable brick is provided, and the method comprises the following specific steps: stirring the solid waste concrete stone, the steel slag, the alkaline residue, the cement and the salt residue in a stirrer (20 m)360 min/h), then forming in a vibration press (10MPa for 12s), and curing at 20 ℃ and 90% RH for 28 days to obtain the final product.
Example 5
The embodiment provides a steel slag permeable brick, which comprises the following raw material components: example 2 solid waste concrete stone 70 parts by weight, Steel slag 15 parts by weight (particle size 0.5mm), alkali slag 15 parts by weight, Cement 15 parts by weight, salt slag (CaSO)3Content 70 wt.%) 8 parts by weight.
Further, a method for preparing the steel slag permeable brick is provided, and the method comprises the following specific steps: stirring the solid waste concrete stone, the steel slag, the alkaline residue, the cement and the salt residue in a stirrer (25 m)340 min/h), then forming in a vibration press (15MPa for 8s), and curing at 20 ℃ and 90% RH for 28 days to obtain the final product.
Example 6
The embodiment provides a steel slag permeable brick, which comprises the following raw material components: example 3 solid waste concrete stone 65 parts by weight, Steel slag 10 parts by weight (particle size 0.5mm), alkali slag 10 parts by weight, Cement 10 parts by weight, salt slag (CaSO)3Content 64 wt.%).
Further, a method for preparing the steel slag permeable brick is provided, and the method comprises the following specific steps: stirring the solid waste concrete stone, the steel slag, the alkaline residue, the cement and the salt residue in a stirrer (22 m)350 min/h), then forming in a vibration press (12MPa for 10s), and curing at 20 ℃ and 90% RH for 28 days to obtain the final product.
Comparative example
The comparative example provides a steel slag permeable brick, which comprises the following raw material components: 65 parts of steel slag (3-10mm), 10 parts of steel slag (with the particle size of 0.5mm), 10 parts of alkaline residue, 10 parts of cement and salt residue (CaSO)3Content 64 wt.%).
Further, provideA method for preparing the steel slag permeable brick comprises the following specific steps: stirring the steel slag, the alkaline residue, the cement and the salt residue in a stirrer (22 m)350 min/h), then forming in a vibration press (12MPa for 10s), and curing at 20 ℃ and 90% RH for 28 days to obtain the final product.
The steel slag water permeable bricks prepared in the embodiments 4 to 6 and the comparative example of the invention are tested for compressive strength and water permeability according to GB/T25993-2010 permeable pavement bricks and permeable pavement slabs, the results are shown in Table 1, and the steel slag water permeable bricks prepared in the embodiments 4 to 6 and the comparative example of the invention are tested for wear resistance and frost resistance according to JCT9452005 permeable brick industry Standard, the results are shown in Table 2. The expansion rate of the steel slag permeable bricks prepared in examples 4 to 6 of the invention and the comparative example was measured by the Rayleigh clamp test, and the results are shown in Table 3.
TABLE 1
| Group of | Compressive strength (MPa) | Water permeability coefficient (cm/s, x 10)-2) |
| Example 4 | 61.5 | 1.8 |
| Example 5 | 62.6 | 1.6 |
| Example 6 | 63.2 | 2.2 |
| Comparative example | 53.8 | 1.7 |
TABLE 2
| Group of | Pit length (mm) | 25 freeze-thaw cycles |
| Example 4 | 18 | No crack, compression strength loss rate<5％ |
| Example 5 | 16 | No crack, compression strength loss rate<5％ |
| Example 6 | 15 | No crack, compression strength loss rate<5％ |
| Comparative example | 23 | Has cracks, and the loss rate of the compressive strength is 10 percent |
TABLE 3
| Group of | Expansion rate (24h standard culture, temperature 20 +/-2 ℃, boiling for 3h) |
| Example 4 | 3％ |
| Example 5 | 2.4％ |
| Example 6 | 2.1％ |
| Comparative example | 8.3％ |
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The solid waste concrete stone is characterized by comprising the following raw material components: 50-70 parts of steel slag, 20-40 parts of alkaline residue and 5-15 parts of cement.
2. The solid waste concrete stone as claimed in claim 1, wherein the raw material components comprise: 60 parts of steel slag, 30 parts of alkaline residue and 10 parts of cement.
3. The solid waste concrete stone of claim 1,the particle size of the alkaline residue is less than 1mm, and CaSO is contained in the alkaline residue3The content of (B) is more than 15 wt%.
4. A method for preparing the solid waste concrete stone as claimed in any one of claims 1 to 3, characterized by comprising the steps of:
(1) crushing the steel slag to obtain steel slag powder, and adding water into the steel slag powder to fully soak the steel slag powder to obtain pretreated steel slag;
(2) and fully mixing the pretreated steel slag, the alkaline residue and the cement, extruding the mixture into granular substances in a pressure forming machine, and curing to obtain the solid waste concrete stone.
5. The method for preparing the solid waste concrete stone according to claim 4, wherein in the step (1), the grain size of the steel slag powder is less than 1mm, the weight ratio of the steel slag powder to water is 1:0.8-1.2, and the soaking time is 6-8 months.
6. The method for preparing the solid waste concrete stone as claimed in claim 4, wherein in the step (2), the pressure of the pressure forming is 0.8-1.2MPa, and the time of the pressure forming is 15-25 min; the curing temperature is 20-25 ℃, the humidity is 85 +/-5% RH, and the curing time is 20-30 days; the particle size of the solid waste concrete stone is 3-10 mm.
7. The steel slag permeable brick comprising the solid waste concrete stone of claim 1 is characterized by comprising the following raw material components: 60-70 parts of solid waste concrete stone, 5-15 parts of steel slag, 5-15 parts of alkaline residue, 5-15 parts of cement and 3-8 parts of salt residue.
8. The steel slag permeable brick according to claim 7, wherein the steel slag has a particle size of 1mm or less, and CaSO is contained in the salt slag3The content of (B) is 60-70 wt%.
9. The preparation method of the steel slag permeable brick of claim 7 or 8 is characterized by comprising the following steps: and stirring the solid waste concrete stone, the steel slag, the alkaline residue, the cement and the salt slag in a stirrer to be uniformly mixed, then forming in a vibration press, and curing to obtain the concrete.
10. The method for preparing the steel slag permeable brick according to claim 9, wherein the stirring speed is 20-25m3The stirring time is 40-60 min; the forming pressure of the vibration press is 10-15MPa, and the forming time is 8-12 s; the curing temperature is 20-25 ℃, the humidity is 85 +/-5% RH, and the curing time is 20-30 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010012649.0A CN111116122A (en) | 2020-01-07 | 2020-01-07 | Solid waste concrete stone, steel slag permeable brick based on solid waste concrete stone and preparation method of steel slag permeable brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010012649.0A CN111116122A (en) | 2020-01-07 | 2020-01-07 | Solid waste concrete stone, steel slag permeable brick based on solid waste concrete stone and preparation method of steel slag permeable brick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111116122A true CN111116122A (en) | 2020-05-08 |
Family
ID=70488440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010012649.0A Pending CN111116122A (en) | 2020-01-07 | 2020-01-07 | Solid waste concrete stone, steel slag permeable brick based on solid waste concrete stone and preparation method of steel slag permeable brick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111116122A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112321247A (en) * | 2020-11-03 | 2021-02-05 | 中冶宝钢技术服务有限公司 | Pavement brick and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020069759A (en) * | 2001-02-27 | 2002-09-05 | 주식회사 유로엔지니어링플러스 | A concrete composite using slag |
| CN102173694A (en) * | 2011-03-28 | 2011-09-07 | 韶关学院 | Method for preparing water-permeable brick by using heat-stewed steel slag from converter |
| CN109384442A (en) * | 2018-11-14 | 2019-02-26 | 韶关学院 | A kind of cement combination permeable pavement brick and preparation method thereof |
| CN109650809A (en) * | 2018-12-29 | 2019-04-19 | 安徽工业大学 | A kind of bored dross slag cement water-permeable brick of heat and preparation method thereof |
-
2020
- 2020-01-07 CN CN202010012649.0A patent/CN111116122A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020069759A (en) * | 2001-02-27 | 2002-09-05 | 주식회사 유로엔지니어링플러스 | A concrete composite using slag |
| CN102173694A (en) * | 2011-03-28 | 2011-09-07 | 韶关学院 | Method for preparing water-permeable brick by using heat-stewed steel slag from converter |
| CN109384442A (en) * | 2018-11-14 | 2019-02-26 | 韶关学院 | A kind of cement combination permeable pavement brick and preparation method thereof |
| CN109650809A (en) * | 2018-12-29 | 2019-04-19 | 安徽工业大学 | A kind of bored dross slag cement water-permeable brick of heat and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 杜晓蒙: "《建筑垃圾及工业固废筑路材料》", 30 November 2019, 中国建材工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112321247A (en) * | 2020-11-03 | 2021-02-05 | 中冶宝钢技术服务有限公司 | Pavement brick and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104150843B (en) | Modified bamboo fiber/polymer thing compound high tenacity concrete and preparation method thereof | |
| CN101857411B (en) | Method for preparing baking-free bricks from high soil content construction waste | |
| CN102295471A (en) | Foaming ceramics material prepared through adopting polishing ceramic slags as main raw material, and preparation method thereof | |
| CN111533512B (en) | Preparation method of ductility delayed coagulation fine aggregate concrete with initial setting time of 48-72 h | |
| CN109265180B (en) | High-compression-resistance pervious concrete brick and preparation method thereof | |
| CN100357226C (en) | Method for preparing sandwich type ceramic aggregates free from burning by using waste of ceramics | |
| CN104193263A (en) | Method for preparing environment-friendly thermal-insulation building block from construction waste | |
| CN110981400A (en) | Low-shrinkage steam-curing-free self-compacting C140UHPC and preparation method thereof | |
| CN110981234A (en) | Cementing material and preparation method thereof | |
| CN112624694A (en) | Expansion anti-crack fiber concrete and preparation method thereof | |
| CN109250980A (en) | A kind of steel slag concrete and preparation method thereof | |
| CN101654941A (en) | High-strength non-evaporating brick and preparation method thereof | |
| CN115626810A (en) | Phosphogypsum stabilizing material and application thereof | |
| KR101566547B1 (en) | Structural material manufacturing method using stone powder and blast furnace slag | |
| CN103922686A (en) | Phosphogypsum-plastic waste-slag wall material and preparation method thereof | |
| CN110790554A (en) | Method for preparing brick by using finely ground steel slag and steel slag particles as raw materials | |
| CN110540435A (en) | autoclaved aerated concrete prepared by utilizing waste FCC catalyst and preparation method thereof | |
| US9056789B2 (en) | Method of treating stone wool | |
| CN111116122A (en) | Solid waste concrete stone, steel slag permeable brick based on solid waste concrete stone and preparation method of steel slag permeable brick | |
| CN112250392B (en) | Artificial macadam for road construction and preparation method thereof | |
| CN102161577B (en) | Building brick manufactured by using silicon-containing waste residue and manufacturing method of building brick | |
| CN109265114A (en) | A kind of high-strength bricks for road surface and preparation method thereof | |
| CN108793919A (en) | A kind of composite heat insulation block and preparation method thereof | |
| CN107814535A (en) | A kind of concrete with good ductility | |
| CN108017334A (en) | A kind of artificial reef material based on granite ballast powder 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200508 |
|
| RJ01 | Rejection of invention patent application after publication |