CN114014627A - Full-solid waste high-strength raised floor and preparation method thereof - Google Patents
Full-solid waste high-strength raised floor and preparation method thereof Download PDFInfo
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- CN114014627A CN114014627A CN202111492095.XA CN202111492095A CN114014627A CN 114014627 A CN114014627 A CN 114014627A CN 202111492095 A CN202111492095 A CN 202111492095A CN 114014627 A CN114014627 A CN 114014627A
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- 239000002910 solid waste Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 239000002893 slag Substances 0.000 claims abstract description 57
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- 239000010440 gypsum Substances 0.000 claims abstract description 30
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 26
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 17
- 239000006227 byproduct Substances 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 20
- 239000004567 concrete Substances 0.000 claims description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 239000004576 sand Substances 0.000 claims description 16
- 239000004568 cement Substances 0.000 claims description 13
- 238000000227 grinding Methods 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- 244000248349 Citrus limon Species 0.000 claims description 2
- 235000005979 Citrus limon Nutrition 0.000 claims description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 239000010446 mirabilite Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000011374 ultra-high-performance concrete Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
-
- 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
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
-
- 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
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/142—Steelmaking slags, converter slags
-
- 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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
-
- 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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/143—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being phosphogypsum
-
- 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 a full-solid waste high-strength raised floor and a preparation method thereof, belonging to the technical field of solid waste resource utilization. The floor comprises 40-50% of cementing material, 50-60% of aggregate, 0-2% of water reducing agent and 5-8% of water by mass percent, and during preparation, firstly, slag, steel slag and industrial by-product gypsum are independently ground or mixed and ground, and the cementing material is prepared by uniformly mixing; and then uniformly stirring the cementing material, the aggregate, the water reducing agent and water according to the mass percentage, and pouring, molding and maintaining to obtain the full-solid-waste high-strength raised floor. The full-solid-waste high-strength raised floor prepared by the invention has the compressive strength of 70-90 MPa and the breaking strength of 10-15 MPa in 28 days under the standard curing condition, remarkably improves the utilization rate of solid wastes in the full-solid-waste high-strength raised floor, reduces the cost and has obvious environmental and economic benefits.
Description
Technical Field
The invention relates to the technical field of solid waste resource utilization, in particular to a full-solid waste high-strength raised floor and a preparation method thereof.
Background
The raised floor has wide application and can be used for ventilation, decoration, machine rooms and the like. The raised floor can effectively prevent static electricity and is also used as an overhead static electricity prevention floor. Therefore, such an overhead antistatic floor is mainly used in places where power is frequently used or where many cables are concentrated.
Most of the existing overhead floors in the market are made of ceramics, cement concrete, steel and wood boards, and the existing overhead floors still have various defects: the ceramic floor has high cost, is easy to damage and has low bearing capacity; the cement concrete floor has large self weight and high cost, and the cement in the raw materials has high occupation ratio and low solid waste utilization ratio, thereby being not beneficial to environmental protection; the steel floor has heavy weight, high cost and high maintenance cost; wooden floors have poor bearing capacity, are easy to damage and are sensitive to the environment.
The steel slag as a metallurgical solid waste is not ideal in the current situation of comprehensive utilization in China, and the comprehensive utilization rate is only 10-20 percent at present. The main mineral phase of the steel slag has certain hydration potential, and the crushed and ground steel slag can be used for a large amount of building industry. After iron is removed from the steel slag, the steel slag is easy to grind and process, after grinding, the hydration activity is enhanced, the early reaction is rapid, and the steel slag is also suitable for producing concrete. When the steel slag and the slag are hydrated together, an alkaline environment can be provided, the activity of the slag is fully excited, and industrial by-product gypsum is used as an auxiliary to introduce sulfate ions, so that the decomposition speed of the raw materials can be accelerated, and the rapid generation of hydration products is promoted. Under the synergistic effect of the solid wastes, the performance of the concrete can exceed that of ordinary cement concrete in all aspects, and the concrete is applied to manufacturing the raised floors, so that the problems of environment damage, high production cost and low bearing strength in the production process of the ordinary cement concrete floors can be solved.
The preparation of high strength concrete floors requires the use of large amounts of fine aggregate, which can greatly increase the cost if machine-made sand, either natural or from stone-blasting, is used as the aggregate. The fine aggregate used by the all-solid-waste high-strength raised floor is iron tailing sand, the performance is stable, the gradation is similar to that of natural sand, the mechanical property is ensured, and the cost is reduced.
In the prior art, patent publications C N206279724U and CN 206256658U respectively grant or disclose steel plate raised floors, and use steel floors and improved structures to strengthen diagonal load bearing and side load bearing, so as to improve strength, but steel materials have heavy weight, and need to be subjected to a series of treatments such as finish machining, so that cost and maintenance cost are high.
In addition, CN211369401U discloses a cement-made raised floor, which simplifies the structural design, reduces the weight and the overall height, thereby reducing the construction difficulty. But the load bearing is not high, the cement proportion in the cementing material is too large, the cost is higher, and the environmental protection is not facilitated.
Disclosure of Invention
The invention provides a full-solid-waste high-strength raised floor and a preparation method thereof, aiming at solving the problems that the existing raised floor material is high in cost and low in solid waste utilization rate, and a cement floor uses a large amount of natural aggregate to cause environmental pollution.
The floor comprises, by mass, 40% -50% of a cementing material, 50% -60% of an aggregate, 0-2% of a water reducing agent and 5% -8% of water; wherein the cementing material is prepared from 20-70% of slag, 20-70% of steel slag and 10-20% of industrial byproduct gypsum, and the aggregate is common sand, machine-made sand, iron tailing sand and the like.
Wherein the specific surface area of the slag and the steel slag is 400m2/kg～550m2/kg。
The specific surface area of the industrial by-product gypsum is 300m2/kg～400m2/kg。
The slag is the slag which accords with GB/T18046-2008 granulated blast furnace slag powder used in cement and concrete.
The steel slag is the steel slag which accords with GB/T20491-2006 Steel slag powder used in cement and concrete.
The industrial by-product gypsum is one or more of desulfurized gypsum, phosphogypsum, fluorgypsum, lemon gypsum, waste ceramic mold gypsum, titanium gypsum, mirabilite gypsum and salt gypsum.
The aggregate needs to be processed into the aggregate which meets the technical specification of GB 51032-2014 iron tailing sand concrete application.
The concrete is maintained for 28 days, and has compression strength up to 70-90 MPa and breaking strength up to 10-15 MPa. The method for preparing the full-solid-waste high-strength raised floor comprises the following steps:
(1) preparing a cementing material: independently grinding slag, steel slag and industrial by-product gypsum, and uniformly mixing to obtain a cementing material;
(2) and (2) uniformly stirring the cementing material prepared in the step (1), aggregate, a water reducing agent and water according to a mass ratio, pouring, forming and maintaining to obtain the full-solid-waste high-strength raised floor.
Wherein, the slag, the steel slag and the industrial by-product gypsum can be mixed and ground for 50 minutes in the step (1), so that the specific surface area of the powder can reach 500m2/kg。
The technical scheme of the invention has the following beneficial effects:
in the scheme, the synergistic excitation effect of the slag, the steel slag and the industrial byproduct gypsum is exerted, cement is not used in a concrete system, the consumption of natural aggregate is reduced, and the strength of the concrete is ensured to reach a higher level. Provides a new idea for the low-cost production of the ultra-high performance concrete. The method has the following specific advantages:
(1) the raw materials related by the invention can be completely derived from industrial solid wastes, and cement is not used as a component, so that the cost of concrete is reduced, and the environment is protected;
(2) the invention can cooperatively treat various industrial solid wastes such as slag, steel slag, industrial byproduct gypsum and the like, change waste into valuable and improve the solid waste utilization rate of concrete;
(3) the invention effectively improves the comprehensive utilization rate of the steel slag and provides a new way for consuming the steel slag on a large scale;
(4) the invention provides a substitution scheme of the natural aggregate of the ultra-high performance concrete, which can reduce the consumption of the natural aggregate on a large scale and save natural resources;
(5) compared with other similar ultrahigh-performance concrete, the concrete can still achieve higher strength without adding steel fibers.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description is given with reference to specific embodiments.
The invention provides a full-solid waste high-strength raised floor and a preparation method thereof, wherein the floor comprises, by mass, 40% -50% of a cementing material, 50% -60% of an aggregate, 0-2% of a water reducing agent and 5% -8% of water; wherein the cementing material is prepared from 20-70% of slag, 20-70% of steel slag and 10-20% of industrial byproduct gypsum, and the aggregate is common sand, machine-made sand, iron tailing sand and the like.
When the concrete or the mortar is prepared, firstly, slag, steel slag and industrial by-product gypsum are separately ground and uniformly mixed to prepare a cementing material; and then uniformly stirring the prepared cementing material, the aggregate, the water reducing agent and water according to the mass ratio, pouring, molding and maintaining to obtain the full-solid-waste high-strength raised floor.
The following description is given with reference to specific examples.
Example 1
The full-solid-waste high-strength raised floor is prepared from the following raw materials in parts by weight: by mass percentage, 42.5 percent of slag, 42.5 percent of steel slag and 15 percent of desulfurized gypsum; slag is independently ground to 550m of specific surface area2Kg, grinding the steel slag to 400m of specific surface area2Kg, grinding the desulfurized gypsum into powder with the specific surface area of 400m2In terms of/kg. In the mortar, the mass percentage of a cementing material is 41.3%, the mass percentage of an aggregate is 51.6%, the mass percentage of a water reducing agent is 0.4%, and the mixing water is 6.6%, wherein the aggregate is iron tailing sand, and the solid content of the water reducing agent is 10% of a polycarboxylic acid high-efficiency water reducing agent.
The mortar formulation is shown in the following table: (amount of mortar material per cubic volume: kg/m)3)
The mortar test block is prepared by mixing the above raw materials in a mortar mixer, injecting into a 40mm × 40mm × 160mm mold at 20 + -5 deg.C and relative humidity not lower than 60%, and vibration molding on a mortar vibration table. And curing the molded test block for 24 hours under the standard curing conditions of the curing temperature of 20 +/-2 ℃ and the relative humidity of not less than 95 percent, demolding, continuously placing the molded test block in a constant-temperature constant-humidity curing box with the curing temperature of 20 +/-2 ℃ and the relative humidity of not less than 95 percent for curing to the age of 28 days, and detecting that the compressive strength is 83.1MPa and the flexural strength is 11.58 MPa.
Example 2
The full-solid-waste high-strength raised floor is prepared from the following raw materials in parts by weight: 67.5 percent of slag, 22.5 percent of steel slag and 10 percent of desulfurized gypsum by mass percentage; slag is independently ground to 550m of specific surface area2Kg, grinding the steel slag to 400m of specific surface area2Grinding fluorgypsum to 400m of specific surface area2In terms of/kg. In the mortar, the mass percentage of a cementing material is 41.3%, the mass percentage of an aggregate is 51.5%, the mass percentage of a water reducing agent is 0.6%, and the mixing water is 6.6%, wherein the aggregate is machine-made sand, and the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent with the solid content of 10%.
The mortar formulation is shown in the following table: (amount of mortar material per cubic volume: kg/m)3)
The mortar test block is prepared by mixing the above raw materials in a mortar mixer, injecting into a 40mm × 40mm × 160mm mold at 20 + -5 deg.C and relative humidity not lower than 60%, and vibration molding on a mortar vibration table. And curing the molded test block for 24 hours under the standard curing conditions of the curing temperature of 20 +/-2 ℃ and the relative humidity of not less than 95 percent, demolding, continuously placing the molded test block in a constant-temperature constant-humidity curing box with the curing temperature of 20 +/-2 ℃ and the relative humidity of not less than 95 percent for curing to the age of 28 days, and detecting that the compressive strength is 76.7MPa and the flexural strength is 13.4 MPa.
Example 3
The full-solid-waste high-strength raised floor is prepared from the following raw materials in parts by weight: 40% of slag, 40% of steel slag and 20% of desulfurized gypsum by mass percentage; drying and uniformly mixing the steel slag, the slag and the phosphogypsum, and mixing and grinding the mixture to the specific surface area of 500m2In terms of/kg. In the mortar, the mass percentage of a cementing material is 41.1%, the mass percentage of an aggregate is 51.2%, the mass percentage of a water reducing agent is 0.8%, and the mixing water is 6.8%, wherein the aggregate is iron tailing sand, and the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent with the solid content of 30%.
The mortar formulation is shown in the following table: (amount of mortar material per cubic volume: kg/m)3)
The mortar test block is prepared by mixing the above raw materials in a mortar mixer, injecting into a 40mm × 40mm × 160mm mold at 20 + -5 deg.C and relative humidity not lower than 60%, and vibration molding on a mortar vibration table. And curing the molded test block for 24 hours under the standard curing conditions of the curing temperature of 20 +/-2 ℃ and the relative humidity of not less than 95 percent, demolding, continuously placing the molded test block in a constant-temperature constant-humidity curing box with the curing temperature of 20 +/-2 ℃ and the relative humidity of not less than 95 percent for curing to the age of 28 days, and detecting that the compressive strength is 80.5MPa and the flexural strength is 12.6 MPa.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. The utility model provides a complete useless high strength raised floor that gives up which characterized in that: the mortar comprises, by mass, 40-50% of a cementing material, 50-60% of aggregate, 0-2% of a water reducing agent and 5-8% of water; wherein the cementing material is prepared from 20-70% of slag, 20-70% of steel slag and 10-20% of industrial byproduct gypsum, and the aggregate is common sand, machine-made sand, iron tailing sand and the like.
2. The all-solid-waste high-strength raised floor as claimed in claim 1, wherein: the steel slag is steel slag conforming to GB/T20491-2006 Steel slag powder for cement and concrete.
3. The all-solid-waste high-strength raised floor as claimed in claim 1, wherein: the slag is the slag which accords with GB/T18046-2008 granulated blast furnace slag powder used in cement and concrete.
4. The all-solid-waste high-strength raised floor as claimed in claim 1, wherein: the industrial by-product gypsum is one or more of desulfurized gypsum, phosphogypsum, fluorgypsum, lemon gypsum, waste ceramic mold gypsum, titanium gypsum, mirabilite gypsum and salt gypsum.
5. The all-solid-waste high-strength raised floor as claimed in any one of claims 1 to 4, wherein: under the standard curing condition, the compressive strength of the floor reaches 70MPa to 90MPa in 28 days, and the flexural strength reaches 10MPa to 15 MPa.
6. The method for preparing the full-solid waste high-strength raised floor as claimed in any one of claims 1 to 5, which is characterized in that: the method comprises the following steps:
(1) preparing a cementing material: independently grinding or mixing and grinding the slag, the steel slag and the industrial by-product gypsum to prepare a cementing material;
(2) and (2) uniformly stirring the cementing material prepared in the step (1), aggregate, a water reducing agent and water according to a mass ratio, pouring and molding, and maintaining under standard conditions to obtain the all-solid-waste high-strength raised floor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111492095.XA CN114014627A (en) | 2021-12-08 | 2021-12-08 | Full-solid waste high-strength raised floor and preparation method thereof |
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| CN202111492095.XA CN114014627A (en) | 2021-12-08 | 2021-12-08 | Full-solid waste high-strength raised floor and preparation method thereof |
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| CN114014627A true CN114014627A (en) | 2022-02-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115925344A (en) * | 2023-01-05 | 2023-04-07 | 鞍钢集团矿业有限公司 | Baking-free brick taking iron tailings as raw material and preparation method thereof |
| CN116496060A (en) * | 2023-04-25 | 2023-07-28 | 桂林理工大学 | Low-cost preparation method of alpha semi-hydrated gypsum low-carbon product and product |
-
2021
- 2021-12-08 CN CN202111492095.XA patent/CN114014627A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115925344A (en) * | 2023-01-05 | 2023-04-07 | 鞍钢集团矿业有限公司 | Baking-free brick taking iron tailings as raw material and preparation method thereof |
| CN116496060A (en) * | 2023-04-25 | 2023-07-28 | 桂林理工大学 | Low-cost preparation method of alpha semi-hydrated gypsum low-carbon product and product |
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