CN115215628A - Phosphogypsum solid waste high-strength concrete - Google Patents
Phosphogypsum solid waste high-strength concrete Download PDFInfo
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- CN115215628A CN115215628A CN202210919659.1A CN202210919659A CN115215628A CN 115215628 A CN115215628 A CN 115215628A CN 202210919659 A CN202210919659 A CN 202210919659A CN 115215628 A CN115215628 A CN 115215628A
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- phosphogypsum
- strength concrete
- stirring
- solid waste
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- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 title claims abstract description 52
- 239000011372 high-strength concrete Substances 0.000 title claims abstract description 35
- 239000002910 solid waste Substances 0.000 title claims abstract description 16
- -1 polypropylene Polymers 0.000 claims abstract description 48
- 239000000835 fiber Substances 0.000 claims abstract description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000004743 Polypropylene Substances 0.000 claims abstract description 28
- 239000003607 modifier Substances 0.000 claims abstract description 28
- 229920001155 polypropylene Polymers 0.000 claims abstract description 28
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 28
- POLZHVHESHDZRD-UHFFFAOYSA-N 2-hydroxyethyl 2-methylprop-2-enoate;phosphoric acid Chemical compound OP(O)(O)=O.CC(=C)C(=O)OCCO POLZHVHESHDZRD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000011398 Portland cement Substances 0.000 claims abstract description 20
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 20
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical class [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 20
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 20
- 239000010457 zeolite Substances 0.000 claims abstract description 20
- 238000003756 stirring Methods 0.000 claims description 56
- 239000000203 mixture Substances 0.000 claims description 32
- 235000012239 silicon dioxide Nutrition 0.000 claims description 19
- 239000004568 cement Substances 0.000 claims description 18
- 239000011521 glass Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 16
- 239000004005 microsphere Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 8
- 239000006229 carbon black Substances 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 8
- 239000010445 mica Substances 0.000 claims description 8
- 229910052618 mica group Inorganic materials 0.000 claims description 8
- 238000001238 wet grinding Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 description 20
- 239000004567 concrete Substances 0.000 description 13
- 238000002360 preparation method Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material 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
- C04B28/143—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
- 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
-
- 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 discloses phosphogypsum solid waste high-strength concrete which comprises, by weight, 70-100 parts of phosphogypsum, 40-80 parts of hydroxyethyl methacrylate phosphate, 20-30 parts of zeolite powder, 20-40 parts of polypropylene fiber, 150-200 parts of ordinary portland cement, 20-40 parts of modified calcium oxide, 10-30 parts of silica modified acrylate, 5-15 parts of a modifier and 8-18 parts of a reinforcing agent.
Description
Technical Field
The invention relates to the technical field of high-strength concrete preparation, in particular to phosphogypsum solid waste high-strength concrete.
Background
Concrete is the most widely used building material, and is continuously and deeply researched, perfected and developed along with the development of science and technology. In recent years, the problems of shrinkage and cracking of concrete have been the focus of research, because the volume shrinkage is easily caused by water loss and temperature and humidity changes at the initial stage of cement setting and hardening, and the cement concrete is easily cracked when the tensile stress generated by the limited shrinkage exceeds the tensile strength of the concrete; meanwhile, the bearing capacity of the cracked concrete is sharply reduced; moreover, the penetration of moisture further deteriorates the durability of concrete, causing corrosion of reinforcing steel bars, structural failure, and deterioration of the usability of concrete.
At present, solid waste materials such as phosphogypsum and the like cannot be consumed in the concrete preparation process, so that the waste of resources is caused, and therefore, improvement is needed.
Disclosure of Invention
The invention aims to provide high-strength concrete made of phosphogypsum solid waste, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the high-strength concrete comprises, by weight, 70-100 parts of phosphogypsum, 40-80 parts of hydroxyethyl methacrylate phosphate, 20-30 parts of zeolite powder, 20-40 parts of polypropylene fiber, 150-200 parts of ordinary portland cement, 20-40 parts of modified calcium oxide, 10-30 parts of silicon dioxide modified acrylate, 5-15 parts of a modifier and 8-18 parts of a reinforcing agent.
Preferably, the preferable component proportion of the high-strength concrete component comprises 85 parts of phosphogypsum, 60 parts of hydroxyethyl methacrylate phosphate, 25 parts of zeolite powder, 30 parts of polypropylene fiber, 180 parts of common portland cement, 30 parts of modified calcium oxide, 20 parts of silicon dioxide modified acrylate, 10 parts of modifier and 13 parts of reinforcing agent.
Preferably, the modifier consists of 30% of biochar, 20% of white carbon black, 30% of hollow glass microspheres and 20% of mica powder.
Preferably, the reinforcing agent component comprises, by weight, 4-8 parts of nano silicon dioxide powder, 6-12 parts of polypropylene imitation steel fiber, 10-20 parts of alumina ceramic microspheres and 5-15 parts of glass chopped fiber.
Preferably, the production process comprises the following steps:
A. adding phosphogypsum into a grinder, and grinding by adopting a wet grinding mode to obtain powdery phosphogypsum;
B. mixing hydroxyethyl methacrylate phosphate, zeolite powder, polypropylene fiber and modified calcium oxide, and adding the mixture into a stirring kettle for stirring to obtain a mixture A;
C. mixing the powdery phosphogypsum, the mixture A, the silicon dioxide modified acrylate, the modifier and the reinforcing agent, adding the mixture into a cement mixer, adding the ordinary Portland cement twice, adding a proper amount of water, and stirring at normal temperature to obtain the high-strength concrete.
Preferably, the crushing speed in the step A is 300-400 r/m, the crushing speed is increased to 1000-1400 r/m after 10min of crushing, and the crushing is continued for 20min.
Preferably, the stirring speed in the step B is 3000-5000 r/min, and the time is 80-90 min.
Preferably, the stirring speed of the cement stirrer in the step C is 800-1000 rpm, and the stirring speed is increased to 2000-2200 rpm after stirring for 20min.
Compared with the prior art, the invention has the beneficial effects that: the preparation process is simple, the prepared high-strength concrete realizes large-scale resource utilization of the phosphogypsum and other industrial solid wastes, any natural mineral resources are not consumed during preparation, and the prepared concrete has excellent overall compression resistance and corrosion resistance, greatly prolongs the service life of the concrete and improves the economic benefit.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides the following technical scheme: the high-strength concrete comprises, by weight, 70-100 parts of phosphogypsum, 40-80 parts of hydroxyethyl methacrylate phosphate, 20-30 parts of zeolite powder, 20-40 parts of polypropylene fiber, 150-200 parts of ordinary portland cement, 20-40 parts of modified calcium oxide, 10-30 parts of silicon dioxide modified acrylate, 5-15 parts of a modifier and 8-18 parts of a reinforcing agent.
The first embodiment is as follows:
the high-strength concrete comprises, by weight, 70 parts of phosphogypsum, 40 parts of hydroxyethyl methacrylate phosphate, 20 parts of zeolite powder, 20 parts of polypropylene fiber, 150 parts of ordinary portland cement, 20 parts of modified calcium oxide, 10 parts of silicon dioxide modified acrylate, 5 parts of a modifier and 8 parts of a reinforcing agent.
In this example, the modifier consists of 30% of biochar, 20% of white carbon black, 30% of hollow glass microspheres, and 20% of mica powder.
In the embodiment, the reinforcing agent comprises 4 parts of nano silicon dioxide powder, 6 parts of polypropylene steel-like fiber, 10 parts of alumina ceramic microsphere and 5 parts of glass chopped fiber in parts by weight.
The production process of the embodiment comprises the following steps:
A. adding phosphogypsum into a grinder, and grinding by adopting a wet grinding mode to obtain powdery phosphogypsum;
B. mixing hydroxyethyl methacrylate phosphate, zeolite powder, polypropylene fiber and modified calcium oxide, and adding the mixture into a stirring kettle for stirring to obtain a mixture A;
C. mixing the powdery phosphogypsum, the mixture A, the silicon dioxide modified acrylate, the modifier and the reinforcing agent, adding the mixture into a cement mixer, adding the ordinary Portland cement twice, adding a proper amount of water, and stirring at normal temperature to obtain the high-strength concrete.
In this embodiment, the pulverizing rate in step a is 300 rpm, the pulverizing rate is increased to 1000 rpm after pulverizing for 10min, and the pulverizing is continued for 20min.
In this example, the stirring speed in step B was 3000 rpm for 80min.
In this example, the stirring speed of the cement mixer in the step C was 800 rpm, and the stirring speed was increased to 2000 rpm after stirring for 20min.
Example two:
the high-strength concrete comprises, by weight, 100 parts of phosphogypsum, 80 parts of hydroxyethyl methacrylate phosphate, 30 parts of zeolite powder, 40 parts of polypropylene fiber, 200 parts of ordinary portland cement, 40 parts of modified calcium oxide, 30 parts of silicon dioxide modified acrylate, 15 parts of a modifier and 18 parts of a reinforcing agent.
In this example, the modifier consists of 30% of biochar, 20% of white carbon black, 30% of hollow glass microspheres, and 20% of mica powder.
In the embodiment, the components of the reinforcing agent comprise 8 parts of nano silicon dioxide powder, 12 parts of polypropylene steel-like fiber, 20 parts of alumina ceramic microsphere and 15 parts of glass chopped fiber in parts by weight.
The production process of the embodiment comprises the following steps:
A. adding phosphogypsum into a grinder, and grinding by adopting a wet grinding mode to obtain powdery phosphogypsum;
B. mixing hydroxyethyl methacrylate phosphate, zeolite powder, polypropylene fiber and modified calcium oxide, and adding the mixture into a stirring kettle for stirring to obtain a mixture A;
C. mixing the powdery phosphogypsum, the mixture A, the silicon dioxide modified acrylate, the modifier and the reinforcing agent, adding the mixture into a cement mixer, adding the ordinary portland cement twice, adding a proper amount of water, and stirring at normal temperature to obtain the high-strength concrete.
In this embodiment, the pulverizing rate in step a is 400 rpm, the pulverizing rate is increased to 1400 rpm after 10min of pulverizing, and the pulverizing is continued for 20min.
In this example, the stirring speed in step B was 5000 rpm for 90min.
In this example, the stirring speed of the cement mixer in step C was 1000 rpm, and after stirring for 20min, the stirring speed was increased to 2200 rpm.
Example three:
the high-strength concrete comprises 75 parts by weight of phosphogypsum, 50 parts by weight of hydroxyethyl methacrylate phosphate, 22 parts by weight of zeolite powder, 24 parts by weight of polypropylene fiber, 160 parts by weight of ordinary portland cement, 25 parts by weight of modified calcium oxide, 15 parts by weight of silicon dioxide modified acrylate, 7 parts by weight of modifier and 9 parts by weight of reinforcing agent.
In this example, the modifier consists of 30% of biochar, 20% of white carbon black, 30% of hollow glass microspheres, and 20% of mica powder.
In the embodiment, the reinforcing agent comprises 5 parts of nano silicon dioxide powder, 7 parts of polypropylene steel-like fiber, 12 parts of alumina ceramic microsphere and 8 parts of glass chopped fiber in parts by weight.
The production process of the embodiment comprises the following steps:
A. adding phosphogypsum into a grinder, and grinding by adopting a wet grinding mode to obtain powdery phosphogypsum;
B. mixing hydroxyethyl methacrylate phosphate, zeolite powder, polypropylene fiber and modified calcium oxide, and adding the mixture into a stirring kettle for stirring to obtain a mixture A;
C. mixing the powdery phosphogypsum, the mixture A, the silicon dioxide modified acrylate, the modifier and the reinforcing agent, adding the mixture into a cement mixer, adding the ordinary Portland cement twice, adding a proper amount of water, and stirring at normal temperature to obtain the high-strength concrete.
In this embodiment, the pulverizing rate in step a is 320 rpm, the pulverizing rate is increased to 1200 rpm after 10min of pulverizing, and the pulverizing is continued for 20min.
In this example, the stirring speed in step B was 3200 rpm for 85min.
In this example, the stirring speed of the cement mixer in step C was 850 rpm, and after stirring for 20min, the stirring speed was increased to 2100 rpm.
Example four:
the high-strength concrete comprises, by weight, 90 parts of phosphogypsum, 70 parts of hydroxyethyl methacrylate phosphate, 28 parts of zeolite powder, 35 parts of polypropylene fiber, 180 parts of ordinary portland cement, 35 parts of modified calcium oxide, 28 parts of silicon dioxide modified acrylate, 13 parts of a modifier and 16 parts of a reinforcing agent.
In this example, the modifier consists of 30% of biochar, 20% of white carbon black, 30% of hollow glass beads and 20% of mica powder.
In the embodiment, the reinforcing agent comprises 7 parts by weight of nano silicon dioxide powder, 11 parts by weight of polypropylene steel-like fiber, 18 parts by weight of alumina ceramic microsphere and 13 parts by weight of glass chopped fiber.
The production process of the embodiment comprises the following steps:
A. adding phosphogypsum into a grinder, and grinding by adopting a wet grinding mode to obtain powdery phosphogypsum;
B. mixing hydroxyethyl methacrylate phosphate, zeolite powder, polypropylene fiber and modified calcium oxide, and adding the mixture into a stirring kettle for stirring to obtain a mixture A;
C. mixing the powdery phosphogypsum, the mixture A, the silicon dioxide modified acrylate, the modifier and the reinforcing agent, adding the mixture into a cement mixer, adding the ordinary Portland cement twice, adding a proper amount of water, and stirring at normal temperature to obtain the high-strength concrete.
In this embodiment, the pulverizing rate in step a is 380 rpm, the pulverizing rate is increased to 1300 rpm after pulverizing for 10min, and the pulverizing is continued for 20min.
In this example, the stirring speed in step B was 3800 rpm for 88min.
In this example, the stirring speed of the cement mixer in the step C was 860 rpm, and the stirring speed was increased to 2100 rpm after stirring for 20min.
Example five:
the high-strength concrete comprises, by weight, 70 parts of phosphogypsum, 80 parts of hydroxyethyl methacrylate phosphate, 20 parts of zeolite powder, 40 parts of polypropylene fiber, 150 parts of ordinary portland cement, 40 parts of modified calcium oxide, 10 parts of silicon dioxide modified acrylate, 15 parts of a modifier and 8 parts of a reinforcing agent.
In this example, the modifier consists of 30% of biochar, 20% of white carbon black, 30% of hollow glass microspheres, and 20% of mica powder.
In the embodiment, the reinforcing agent comprises 4 parts of nano silicon dioxide powder, 12 parts of polypropylene steel-like fiber, 10 parts of alumina ceramic microsphere and 15 parts of glass chopped fiber in parts by weight.
The production process of the embodiment comprises the following steps:
A. adding phosphogypsum into a grinder, and grinding by adopting a wet grinding mode to obtain powdery phosphogypsum;
B. mixing hydroxyethyl methacrylate phosphate, zeolite powder, polypropylene fiber and modified calcium oxide, and adding the mixture into a stirring kettle for stirring to obtain a mixture A;
C. mixing the powdery phosphogypsum, the mixture A, the silicon dioxide modified acrylate, the modifier and the reinforcing agent, adding the mixture into a cement mixer, adding the ordinary Portland cement twice, adding a proper amount of water, and stirring at normal temperature to obtain the high-strength concrete.
In this embodiment, the pulverizing rate in step a is 300 rpm, the pulverizing rate is increased to 1400 rpm after 10min of pulverizing, and the pulverizing is continued for 20min.
In this example, the stirring speed in step B was 3000 rpm for 90min.
In this example, the stirring speed of the cement mixer in step C was 800 rpm, and after stirring for 20min, the stirring speed was increased to 2200 rpm.
Example six:
the high-strength concrete comprises, by weight, 85 parts of phosphogypsum, 60 parts of hydroxyethyl methacrylate phosphate, 25 parts of zeolite powder, 30 parts of polypropylene fiber, 180 parts of ordinary portland cement, 30 parts of modified calcium oxide, 20 parts of silicon dioxide modified acrylate, 10 parts of a modifier and 13 parts of a reinforcing agent.
In this example, the modifier consists of 30% of biochar, 20% of white carbon black, 30% of hollow glass beads and 20% of mica powder.
In the embodiment, the reinforcing agent comprises 6 parts by weight of nano silicon dioxide powder, 9 parts by weight of polypropylene steel-like fiber, 15 parts by weight of alumina ceramic microsphere and 10 parts by weight of glass chopped fiber.
The production process of the embodiment comprises the following steps:
A. adding phosphogypsum into a grinder, and grinding by adopting a wet grinding mode to obtain powdery phosphogypsum;
B. mixing hydroxyethyl methacrylate phosphate, zeolite powder, polypropylene fiber and modified calcium oxide, and adding the mixture into a stirring kettle for stirring to obtain a mixture A;
C. mixing the powdery phosphogypsum, the mixture A, the silicon dioxide modified acrylate, the modifier and the reinforcing agent, adding the mixture into a cement mixer, adding the ordinary Portland cement twice, adding a proper amount of water, and stirring at normal temperature to obtain the high-strength concrete.
In this embodiment, the crushing speed in step a is 350 rpm, the crushing speed is increased to 1200 rpm after 10min of crushing, and the crushing is continued for 20min.
In this example, the stirring speed in step B was 4000 rpm for 85min.
In this example, the stirring speed of the cement mixer in step C was 900 rpm, and after stirring for 20min, the stirring speed was increased to 2100 rpm.
Experimental example:
the concrete prepared by the embodiments of the invention is used for performance test, and the obtained data is as follows:
in conclusion, the preparation process is simple, the prepared high-strength concrete realizes large-scale resource utilization of the phosphogypsum and other industrial solid wastes, any natural mineral resources are not consumed during preparation, and the prepared concrete has excellent overall compression resistance and corrosion resistance, greatly prolongs the service life of the concrete and improves the economic benefit.
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 phosphogypsum solid waste high-strength concrete is characterized by comprising the following components in parts by weight: the high-strength concrete comprises, by weight, 70-100 parts of phosphogypsum, 40-80 parts of hydroxyethyl methacrylate phosphate, 20-30 parts of zeolite powder, 20-40 parts of polypropylene fiber, 150-200 parts of ordinary portland cement, 20-40 parts of modified calcium oxide, 10-30 parts of silicon dioxide modified acrylate, 5-15 parts of a modifier and 8-18 parts of a reinforcing agent.
2. The phosphogypsum solid waste high-strength concrete according to claim 1, which is characterized in that: the preferable component proportion of the high-strength concrete component comprises 85 parts of phosphogypsum, 60 parts of hydroxyethyl methacrylate phosphate, 25 parts of zeolite powder, 30 parts of polypropylene fiber, 180 parts of ordinary portland cement, 30 parts of modified calcium oxide, 20 parts of silicon dioxide modified acrylate, 10 parts of modifier and 13 parts of reinforcing agent.
3. The phosphogypsum solid waste high-strength concrete according to claim 1, which is characterized in that: the modifier consists of 30% of biochar, 20% of white carbon black, 30% of hollow glass microspheres and 20% of mica powder.
4. The phosphogypsum solid waste high-strength concrete according to claim 1, which is characterized in that: the reinforcing agent comprises, by weight, 4-8 parts of nano silicon dioxide powder, 6-12 parts of polypropylene imitation steel fiber, 10-20 parts of alumina ceramic microsphere and 5-15 parts of glass chopped fiber.
5. The production process for realizing the phosphogypsum solid waste high-strength concrete of claim 1 is characterized by comprising the following steps of: the production process comprises the following steps:
A. adding phosphogypsum into a grinder, and grinding by adopting a wet grinding mode to obtain powdery phosphogypsum;
B. mixing hydroxyethyl methacrylate phosphate, zeolite powder, polypropylene fiber and modified calcium oxide, and then adding the mixture into a stirring kettle for stirring to obtain a mixture A;
C. mixing the powdery phosphogypsum, the mixture A, the silicon dioxide modified acrylate, the modifier and the reinforcing agent, adding the mixture into a cement mixer, adding the ordinary Portland cement twice, adding a proper amount of water, and stirring at normal temperature to obtain the high-strength concrete.
6. The production process of the phosphogypsum solid waste high-strength concrete according to claim 5, is characterized in that: and B, in the step A, the crushing speed is 300-400 r/m, the crushing speed is increased to 1000-1400 r/m after 10min of crushing, and the crushing is continued for 20min.
7. The production process of the phosphogypsum solid waste high-strength concrete according to claim 5, is characterized in that: in the step B, the stirring speed is 3000-5000 r/min, and the time is 80-90 min.
8. The production process of the phosphogypsum solid waste high-strength concrete according to claim 5, characterized in that: and C, stirring speed of the cement stirrer in the step C is 800-1000 rpm, and stirring speed is increased to 2000-2200 rpm after stirring for 20min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210919659.1A CN115215628A (en) | 2022-08-02 | 2022-08-02 | Phosphogypsum solid waste high-strength concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210919659.1A CN115215628A (en) | 2022-08-02 | 2022-08-02 | Phosphogypsum solid waste high-strength concrete |
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| CN115215628A true CN115215628A (en) | 2022-10-21 |
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| CN202210919659.1A Pending CN115215628A (en) | 2022-08-02 | 2022-08-02 | Phosphogypsum solid waste high-strength concrete |
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Application publication date: 20221021 |