CN112194502A - High-strength concrete doped with glass slag and tailing slag and preparation method thereof - Google Patents
High-strength concrete doped with glass slag and tailing slag and preparation method thereof Download PDFInfo
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- CN112194502A CN112194502A CN202011141858.1A CN202011141858A CN112194502A CN 112194502 A CN112194502 A CN 112194502A CN 202011141858 A CN202011141858 A CN 202011141858A CN 112194502 A CN112194502 A CN 112194502A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
Abstract
The invention discloses high-strength concrete doped with glass slag and tailing slag, which is prepared from the following raw materials in parts by weight: 300-350 parts of glass slag, 200-250 parts of tailing slag, 300-350 parts of building solid waste, 150-200 parts of hollow glass beads, 235-275 parts of lightweight aggregate, 125-165 parts of semi-hydrated gypsum, 225-265 parts of cement, 85-125 parts of water reducing agent, 100-150 parts of foaming agent and 80-120 parts of foam stabilizer. According to the method, the high-strength concrete is prepared by adopting the glass slag, the tailing slag, the building solid waste, the hollow glass beads and the like as raw materials through scientific and reasonable collocation and innovative design, so that the production cost of the concrete is greatly reduced, the prepared concrete has good durability and toughness, and the crack resistance of the concrete is enhanced; changing waste into valuable, utilizing resources to the maximum, saving energy and protecting environment.
Description
Technical Field
The invention belongs to the technical field of production and processing of building materials, and particularly relates to high-strength concrete doped with glass slag and tailing slag and a preparation method thereof.
Background
With the rapid development of modern science and technology and the continuous improvement of the living standard of people, glass plays an increasingly important role in cities and towns nowadays, and is widely applied to the fields of buildings, chemical engineering, instruments and equipment, scientific research , daily life and the like. Glass is a substance commonly used in modern life of human beings, and can be made into various appliances, utensils, plate glass and the like. Therefore, the waste is more, and the waste glass and products can be collected for the sustainable utilization of resources, so that the harm is turned into the benefit, and the waste is changed into the valuable. There are several types of recycling of glass products: as a flux for casting, transformation and utilization, re-melting, raw material recovery and reuse, and the like. About four to fifty million tons of waste glass are generated in China in a year, and the glass needs 4000 years for complete degradation, namely, the glass belongs to the range of basically non-degradable substances. Because of non-degradability, the waste glass can only be disposed of in landfills after becoming waste, but the presence of the waste glass cannot be changed by the landfills, which still brings many potential insecurities to the natural environment, such as soil and human activities.
In addition, with the continuous development of industrial technology in China, the yield of various industrial waste residues is continuously improved, and the red mud, the phosphogypsum, mine tailings and the like are the most common. At present, the comprehensive recovery utilization rate of tailings in China is only about 7%, and most of tailings are stockpiled in a tailing form. The tailing stockpiling not only occupies a large amount of land, but also seriously pollutes the environment, and mainly shows two aspects of residual medicament in the tailings and tailing dust. The tailing slag contains cyanide, sulfide, surfactant, floating agent, flocculating agent and the like, and if the tailing slag is stored for a long time, acidic water or toxic gas is generated, so that serious harm is caused to downstream rivers or the environment. In addition, due to the progress of technological development, the consumption of glass products is increased day by day, and meanwhile, the quantity of waste glass is also greatly increased, so that the problem of how to reasonably utilize waste glass resources is caused. The recycling rate of the waste heat is improved, the waste heat is a hot spot of global attention, and the waste heat is an urgent problem which must be met and solved by modern science and technology workers. The industrial glass slag and the tailing slag contain various harmful components, cannot be directly used and cause environmental pollution when discarded.
The waste glass mainly comes from two types of industrial waste glass (such as plate glass, glass fiber and the like) and daily waste glass (such as vessel glass, bulb glass and the like). In the production and processing of general plate glass, the leftover materials cut from glass raw sheets account for 15 to 25 percent of the production totality, and the waste glass produced by regular production halt accounts for 5 to 10 percent of the production totality; in addition, the waste glass products obtained under abnormal conditions caused by sudden fluctuations in the operating temperature of the melting furnace, changes in the quality or the mix ratio of raw materials, and operational errors of workers also account for a part of the proportion. The waste glass fiber is waste residue generated in the industrial production and processing process of glass fiber, and the quantity of the waste glass fiber accounts for about 15 percent of the yield of the glass fiber, and glass bottles, glass walls, glass window fragments, scrapped televisions, computer flat panel displays (CRT) and the like generated in daily life of people also form the main source of waste glass. According to statistics, although the waste glass accounts for 4-8% of the total amount of urban garbage in developed countries in Europe and America, about 1280 ten thousand t of waste glass is produced in 2005 in America, but only 275 ten thousand t of waste glass is recovered. The amount of waste glass produced in China is about 450-700 million tons per year, and the waste glass accounts for 3% -5% of urban domestic garbage. Statistical data of the united nations show that 7 percent of the global solid waste residues are waste glass. At present, except that a small part of waste glass can be recycled, more waste glass is thrown to wastelands in the form of waste to be buried, and the waste glass is rotten for thousands of years, so that a large amount of land is occupied, and the ecological environment and the waste of resource and energy are caused. Currently, there are some techniques for the recovery of waste glass slag, such as:
1. patent application CN201710829879.4 discloses a method for comprehensive utilization of acid-etched glass slag, which comprises the following steps: (1) heating the acid etching glass slag, evaporating the fluorine-containing acid liquid on the surface of the acid etching glass slag, and absorbing the fluorine-containing acid liquid into the fluorine-containing acid liquid by using water; (2) placing the dried glass slag and concentrated sulfuric acid in a reactor, adopting indirect heating, condensing the gas generated by the reaction to obtain anhydrous hydrogen fluoride, and absorbing the uncondensed gas by using water; outputting the material slag; (3) putting the material residues into the process water for dissolving; the dissolved solution is aluminum sulfate solution, and aluminum sulfate solid products can be prepared by concentration; and carrying out solid-liquid separation on undissolved solids to obtain a finished product of strontium sulfate or/and calcium sulfate. The invention recovers fluorine in the glass slag generated in the glass thinning process to prepare anhydrous hydrogen fluoride and fluosilicic acid, and prepares aluminum and strontium into aluminum sulfate and strontium sulfate with economic value, thereby not only solving the problem of treatment of the glass slag as hazardous waste, but also obtaining products with higher economic value, and being suitable for industrialized popularization and application.
2. Patent application CN201210372442.X discloses a method for recycling waste glass slag and obtained glass, and the recycling method comprises the following steps: firstly, crushing and grinding the waste glass slag, then soaking the waste glass slag by water to remove most soluble substances in the waste glass slag, filtering and drying the soaked waste glass slag, and directly firing the waste glass slag into glass or using the waste glass slag as one of raw materials for preparing the glass. The invention provides a method and a process for pretreating and recycling waste borosilicate glass slag collected in a flue of a flame kiln for producing borosilicate glass, which aim to recycle the waste borosilicate glass slag generated by volatilization and condensation, provides a feasible new way, and finds a solution for solving the problem troubling borosilicate glass production enterprises. According to the method, after the waste glass slag is pretreated, the filtrate and the filter residue are respectively utilized, so that waste is fully changed into valuable, and the environmental pollution is reduced.
3. Patent application CN201110349617.0 discloses a process for preparing glass ceramics by using waste CRT glass slag and fluorescent powder. The process comprises the following steps: (1) dissolving fluorescent powder in the CRT with dilute sulfuric acid, adding HF to convert the dissolved rare earth ions into rare earth fluoride precipitate, filtering and drying; (2) cleaning, filtering and grinding CRT glass residues, and then mixing the CRT glass residues with rare earth fluoride and sodium fluoride in proportion, wherein the mass content of each substance in the mixture is as follows: glass residue: 62-68% of sodium fluoride: 28% -32%, rare earth fluoride: 4% -6%, then grinding to mix evenly; (3) and roasting the materials at 900-1200 ℃ for 20-60 min, pouring glass water into a stainless steel plate, cooling in a high-temperature furnace at 380-450 ℃ for 1-2 h, and naturally cooling to room temperature to obtain the microcrystalline glass. The invention not only recycles the glass slag, but also utilizes the characteristics of rare earth elements to manufacture materials with good performance.
However, no literature report has been found about the simultaneous recovery of tailing slag and glass slag as a building material such as high-strength concrete.
Disclosure of Invention
The invention provides high-strength concrete doped with glass slag and tailing slag and a preparation method thereof to solve the technical problems.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the high-strength concrete doped with glass slag and tailing slag is prepared from the following raw materials in parts by weight: 300-350 parts of glass slag, 200-250 parts of tailing slag, 300-350 parts of building solid waste, 150-200 parts of hollow glass beads, 235-275 parts of lightweight aggregate, 125-165 parts of semi-hydrated gypsum, 225-265 parts of cement, 85-125 parts of water reducing agent, 100-150 parts of foaming agent and 80-120 parts of foam stabilizer.
Further, the high-strength concrete doped with the glass slag and the tailing slag is prepared from the following raw materials in parts by weight: 310-340 parts of glass slag, 210-240 parts of tailing slag, 310-340 parts of building solid waste, 160-190 parts of hollow glass beads, 245-265 parts of lightweight aggregate, 135-155 parts of semi-hydrated gypsum, 235-255 parts of cement, 95-115 parts of water reducing agent, 110-140 parts of foaming agent and 90-110 parts of foam stabilizer.
Further, the high-strength concrete doped with the glass slag and the tailing slag is prepared from the following raw materials in parts by weight: 325 parts of glass slag, 225 parts of tailing slag, 325 parts of building solid waste, 175 parts of hollow glass beads, 255 parts of lightweight aggregate, 145 parts of semi-hydrated gypsum, 245 parts of cement, 105 parts of water reducing agent, 125 parts of foaming agent and 100 parts of foam stabilizer.
Furthermore, the compressive strength of the hollow glass beads is more than 60MPa, the particle size is 150-180 mu m, and the true density is 0.3-0.5 g/cm3。
Further, the lightweight aggregate is prepared by uniformly mixing the lightweight fine aggregate and the lightweight coarse aggregate according to the mass ratio of 1-2: 3, and the lightweight aggregate is one of shale ceramsite, clay ceramsite, fly ash ceramsite and coal gangue, wherein the cylinder pressure strength of the lightweight coarse aggregate is 6.0-8.0 MPa.
Further, the semi-hydrated gypsum comprises one or more of calcined gypsum, natural gypsum and desulfurized gypsum.
Further, the foaming agent is aluminum powder or aluminum powder paste, and the active aluminum content of the aluminum powder paste is more than or equal to 90%; the water reducing agent is a liquid polycarboxylic acid high-performance water reducing agent with the pH value of 6-8.
Further, the foam stabilizer is sodium methyl cellulose, and the density of the sodium methyl cellulose is 0.55-0.65 g/cm3。
Further, a method for preparing the high-strength concrete doped with the glass slag and the tailing slag comprises the following steps:
(1) weighing glass slag, tailing slag, building solid waste and lightweight aggregate according to the weight parts, mixing, grinding, adding cement, and uniformly mixing to obtain mixed powder;
(2) weighing hollow glass microspheres, semi-hydrated gypsum, a water reducing agent and a foam stabilizer according to the parts by weight, uniformly mixing, adding a proper amount of water, uniformly stirring by using a vibration rod in a vibration mode, adding a foaming agent, and uniformly stirring to obtain mixed slurry;
(3) and (3) uniformly stirring the mixed powder in the step (1) and the mixed slurry in the step (2), and standing to prepare the high-strength concrete.
Further, grinding the materials until the materials pass through a sieve of 80-100 meshes; the stirring speed is 3000-3500 r/min, and the time is 230-250 s; the standing time is 26-28 h, and the environmental temperature is less than 48 ℃.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
according to the method, the high-strength concrete is prepared by adopting the glass slag, the tailing slag, the building solid waste, the hollow glass beads and the like as raw materials through scientific and reasonable collocation and innovative design, so that the production cost of the concrete is greatly reduced, the prepared concrete has good durability and toughness, and the crack resistance of the concrete is enhanced; changing waste into valuable, utilizing resources to the maximum, saving energy and protecting environment.
Detailed Description
The following is a detailed description of the embodiments of the present invention, but the present invention is not limited to these embodiments, and any modifications or substitutions in the basic spirit of the embodiments are included in the scope of the present invention as claimed in the claims.
Example 1
The high-strength concrete doped with glass slag and tailing slag is prepared from the following raw materials in parts by weight: 300 parts of glass slag, 200 parts of tailing slag, 300 parts of building solid waste, 150 parts of hollow glass beads, 235 parts of lightweight aggregate, 125 parts of semi-hydrated gypsum, 225 parts of cement, 85 parts of water reducing agent, 100 parts of foaming agent and 80 parts of foam stabilizer.
Furthermore, the compressive strength of the hollow glass beads is more than 60MPa, the particle size is 150-180 mu m, and the true density is 0.3-0.5 g/cm3(ii) a The lightweight aggregate is prepared by uniformly mixing lightweight fine aggregate and lightweight coarse aggregate according to the mass ratio of 1-2: 3, and is shale ceramsite, wherein the barrel pressure strength of the lightweight coarse aggregate is 6.0-8.0 MPa; the semi-hydrated gypsum comprises calcined gypsum and natural gypsum; the foaming agent is aluminum powder or aluminum powder paste, and the active aluminum content of the aluminum powder paste is more than or equal to 90 percent; the water reducing agent is a liquid polycarboxylic acid high-performance water reducing agent with the pH value of 6-8; the foam stabilizer is sodium methyl cellulose, and the density of the sodium methyl cellulose is 0.55-0.65 g/cm3。
The preparation method of the high-strength concrete doped with the glass slag and the tailing slag comprises the following steps:
(1) weighing glass slag, tailing slag, building solid waste and lightweight aggregate according to the weight parts, mixing, grinding, adding cement, and uniformly mixing to obtain mixed powder;
(2) weighing hollow glass microspheres, semi-hydrated gypsum, a water reducing agent and a foam stabilizer according to the parts by weight, uniformly mixing, adding a proper amount of water, uniformly stirring by using a vibration rod in a vibration mode, adding a foaming agent, and uniformly stirring to obtain mixed slurry;
(3) uniformly stirring the mixed powder in the step (1) and the mixed slurry in the step (2), and standing to prepare the high-strength concrete; the grinding is to grind the materials to pass through a 80-mesh sieve; the stirring speed is 3000r/min, and the time is 230 s; the standing time is 26h, and the ambient temperature is less than 48 ℃.
Example 2
The high-strength concrete doped with glass slag and tailing slag is prepared from the following raw materials in parts by weight: 350 parts of glass slag, 250 parts of tailing slag, 350 parts of building solid waste, 200 parts of hollow glass beads, 275 parts of lightweight aggregate, 165 parts of semi-hydrated gypsum, 265 parts of cement, 125 parts of water reducing agent, 150 parts of foaming agent and 120 parts of foam stabilizer.
Furthermore, the compressive strength of the hollow glass beads is more than 60MPa, the particle size is 150-180 mu m, and the true density is 0.3-0.5 g/cm3(ii) a The lightweight aggregate is prepared by uniformly mixing lightweight fine aggregate and lightweight coarse aggregate according to the mass ratio of 1-2: 3, and is clay ceramsite, wherein the cylinder pressure strength of the lightweight coarse aggregate is 6.0-8.0 MPa; the semi-hydrated gypsum comprises calcined gypsum and desulfurized gypsum; the foaming agent is aluminum powder or aluminum powder paste, and the active aluminum content of the aluminum powder paste is more than or equal to 90 percent; the water reducing agent is a liquid polycarboxylic acid high-performance water reducing agent with the pH value of 6-8; the foam stabilizer is sodium methyl cellulose, and the density of the sodium methyl cellulose is 0.55-0.65 g/cm3。
The preparation method of the high-strength concrete doped with the glass slag and the tailing slag comprises the following steps:
(1) weighing glass slag, tailing slag, building solid waste and lightweight aggregate according to the weight parts, mixing, grinding, adding cement, and uniformly mixing to obtain mixed powder;
(2) weighing hollow glass microspheres, semi-hydrated gypsum, a water reducing agent and a foam stabilizer according to the parts by weight, uniformly mixing, adding a proper amount of water, uniformly stirring by using a vibration rod in a vibration mode, adding a foaming agent, and uniformly stirring to obtain mixed slurry;
(3) uniformly stirring the mixed powder in the step (1) and the mixed slurry in the step (2), and standing to prepare the high-strength concrete; the grinding is to grind the materials to pass through a 100-mesh sieve; the stirring speed is 3500r/min, and the time is 250 s; the standing time is 28h, and the ambient temperature is less than 48 ℃.
Example 3
The high-strength concrete doped with glass slag and tailing slag is prepared from the following raw materials in parts by weight: 310 parts of glass slag, 210 parts of tailing slag, 310 parts of building solid waste, 160 parts of hollow glass beads, 245 parts of lightweight aggregate, 135 parts of semi-hydrated gypsum, 235 parts of cement, 95 parts of water reducing agent, 110 parts of foaming agent and 90 parts of foam stabilizer.
Furthermore, the compressive strength of the hollow glass beads is more than 60MPa, the particle size is 150-180 mu m, and the true density is 0.3-0.5 g/cm3(ii) a The lightweight aggregate is prepared by uniformly mixing lightweight fine aggregate and lightweight coarse aggregate according to the mass ratio of 1-2: 3, and is a fly ash ceramsite, wherein the barrel pressure strength of the lightweight coarse aggregate is 6.0-8.0 MPa; the semi-hydrated gypsum comprises calcined gypsum, natural gypsum and desulfurized gypsum; the foaming agent is aluminum powder or aluminum powder paste, and the active aluminum content of the aluminum powder paste is more than or equal to 90 percent; the water reducing agent is a liquid polycarboxylic acid high-performance water reducing agent with the pH value of 6-8; the foam stabilizer is sodium methyl cellulose, and the density of the sodium methyl cellulose is 0.55-0.65 g/cm3。
The preparation method of the high-strength concrete doped with the glass slag and the tailing slag comprises the following steps:
(1) weighing glass slag, tailing slag, building solid waste and lightweight aggregate according to the weight parts, mixing, grinding, adding cement, and uniformly mixing to obtain mixed powder;
(2) weighing hollow glass microspheres, semi-hydrated gypsum, a water reducing agent and a foam stabilizer according to the parts by weight, uniformly mixing, adding a proper amount of water, uniformly stirring by using a vibration rod in a vibration mode, adding a foaming agent, and uniformly stirring to obtain mixed slurry;
(3) uniformly stirring the mixed powder in the step (1) and the mixed slurry in the step (2), and standing to prepare the high-strength concrete; the grinding is to grind the materials to pass through a 85-mesh sieve; the stirring speed is 3100r/min, and the time is 235 s; the standing time is 26.5h, and the ambient temperature is less than 48 ℃.
Example 4
The high-strength concrete doped with glass slag and tailing slag is prepared from the following raw materials in parts by weight: 340 parts of glass slag, 240 parts of tailing slag, 340 parts of building solid waste, 190 parts of hollow glass beads, 265 parts of lightweight aggregate, 155 parts of semi-hydrated gypsum, 255 parts of cement, 115 parts of water reducing agent, 140 parts of foaming agent and 110 parts of foam stabilizer.
Furthermore, the compressive strength of the hollow glass beads is more than 60MPa, the particle size is 150-180 mu m, and the true density is 0.3-0.5 g/cm3(ii) a The lightweight aggregate is prepared by uniformly mixing lightweight fine aggregate and lightweight coarse aggregate according to the mass ratio of 1-2: 3, and the lightweight aggregate is coal gangue, wherein the barrel pressure strength of the lightweight coarse aggregate is 6.0-8.0 MPa; the semi-hydrated gypsum comprises calcined gypsum, natural gypsum and desulfurized gypsum; the foaming agent is aluminum powder or aluminum powder paste, and the active aluminum content of the aluminum powder paste is more than or equal to 90 percent; the water reducing agent is a liquid polycarboxylic acid high-performance water reducing agent with the pH value of 6-8; the foam stabilizer is sodium methyl cellulose, and the density of the sodium methyl cellulose is 0.55-0.65 g/cm3。
The preparation method of the high-strength concrete doped with the glass slag and the tailing slag comprises the following steps:
(1) weighing glass slag, tailing slag, building solid waste and lightweight aggregate according to the weight parts, mixing, grinding, adding cement, and uniformly mixing to obtain mixed powder;
(2) weighing hollow glass microspheres, semi-hydrated gypsum, a water reducing agent and a foam stabilizer according to the parts by weight, uniformly mixing, adding a proper amount of water, uniformly stirring by using a vibration rod in a vibration mode, adding a foaming agent, and uniformly stirring to obtain mixed slurry;
(3) uniformly stirring the mixed powder in the step (1) and the mixed slurry in the step (2), and standing to prepare the high-strength concrete; the grinding is to grind the materials to pass through a 95-mesh sieve; the stirring speed is 3400r/min, and the time is 245 s; the standing time is 27.5h, and the ambient temperature is less than 48 ℃.
Example 5
The high-strength concrete doped with glass slag and tailing slag is prepared from the following raw materials in parts by weight: 325 parts of glass slag, 225 parts of tailing slag, 325 parts of building solid waste, 175 parts of hollow glass beads, 255 parts of lightweight aggregate, 145 parts of semi-hydrated gypsum, 245 parts of cement, 105 parts of water reducing agent, 125 parts of foaming agent and 100 parts of foam stabilizer.
Furthermore, the compressive strength of the hollow glass beads is more than 60MPa, the particle size is 150-180 mu m, and the true density is 0.3-0.5 g/cm3(ii) a The lightweight aggregate is prepared by uniformly mixing lightweight fine aggregate and lightweight coarse aggregate according to the mass ratio of 1-2: 3, and is a fly ash ceramsite, wherein the barrel pressure strength of the lightweight coarse aggregate is 6.0-8.0 MPa; the semi-hydrated gypsum comprises calcined gypsum, natural gypsum and desulfurized gypsum; the foaming agent is aluminum powder or aluminum powder paste, and the active aluminum content of the aluminum powder paste is more than or equal to 90 percent; the water reducing agent is a liquid polycarboxylic acid high-performance water reducing agent with the pH value of 6-8; the foam stabilizer is sodium methyl cellulose, and the density of the sodium methyl cellulose is 0.55-0.65 g/cm3。
The preparation method of the high-strength concrete doped with the glass slag and the tailing slag comprises the following steps:
(1) weighing glass slag, tailing slag, building solid waste and lightweight aggregate according to the weight parts, mixing, grinding, adding cement, and uniformly mixing to obtain mixed powder;
(2) weighing hollow glass microspheres, semi-hydrated gypsum, a water reducing agent and a foam stabilizer according to the parts by weight, uniformly mixing, adding a proper amount of water, uniformly stirring by using a vibration rod in a vibration mode, adding a foaming agent, and uniformly stirring to obtain mixed slurry;
(3) uniformly stirring the mixed powder in the step (1) and the mixed slurry in the step (2), and standing to prepare the high-strength concrete; the grinding is to grind the materials to pass through a 90-mesh sieve; the stirring speed is 3300r/min, and the time is 240 s; the standing time is 27h, and the ambient temperature is less than 48 ℃.
In conclusion, the high-strength concrete is prepared by adopting the glass slag, the tailing slag, the building solid waste, the hollow glass beads and the like as raw materials through scientific and reasonable collocation and innovative design, the production cost of the concrete is greatly reduced, the prepared concrete has good durability and toughness, and the crack resistance of the concrete is enhanced; changing waste into valuable, utilizing resources to the maximum, saving energy and protecting environment.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (10)
1. The high-strength concrete doped with glass slag and tailing slag is characterized by being prepared from the following raw materials in parts by weight: 300-350 parts of glass slag, 200-250 parts of tailing slag, 300-350 parts of building solid waste, 150-200 parts of hollow glass beads, 235-275 parts of lightweight aggregate, 125-165 parts of semi-hydrated gypsum, 225-265 parts of cement, 85-125 parts of water reducing agent, 100-150 parts of foaming agent and 80-120 parts of foam stabilizer.
2. The high-strength concrete doped with glass slag and tailings slag as claimed in claim 1, which is prepared from the following raw materials in parts by weight: 310-340 parts of glass slag, 210-240 parts of tailing slag, 310-340 parts of building solid waste, 160-190 parts of hollow glass beads, 245-265 parts of lightweight aggregate, 135-155 parts of semi-hydrated gypsum, 235-255 parts of cement, 95-115 parts of water reducing agent, 110-140 parts of foaming agent and 90-110 parts of foam stabilizer.
3. The high-strength concrete doped with glass slag and tailings slag as claimed in claim 1, which is prepared from the following raw materials in parts by weight: 325 parts of glass slag, 225 parts of tailing slag, 325 parts of building solid waste, 175 parts of hollow glass beads, 255 parts of lightweight aggregate, 145 parts of semi-hydrated gypsum, 245 parts of cement, 105 parts of water reducing agent, 125 parts of foaming agent and 100 parts of foam stabilizer.
4. The high-strength concrete doped with glass slag and tailings as claimed in any one of claims 1 to 3, wherein: the compressive strength of the hollow glass beads is more than 60MPa, the particle size is 150-180 mu m, and the true density is 0.3-0.5 g/cm3。
5. The high-strength concrete doped with glass slag and tailings as claimed in any one of claims 1 to 3, wherein: the lightweight aggregate is prepared by uniformly mixing lightweight fine aggregate and lightweight coarse aggregate according to the mass ratio of 1-2: 3, and is one of shale ceramsite, clay ceramsite, fly ash ceramsite and coal gangue, wherein the cylinder pressure strength of the lightweight coarse aggregate is 6.0-8.0 MPa.
6. The high-strength concrete doped with glass slag and tailings as claimed in any one of claims 1 to 3, wherein: the semi-hydrated gypsum comprises one or more of calcined gypsum, natural gypsum and desulfurized gypsum.
7. The high-strength concrete doped with glass slag and tailings as claimed in any one of claims 1 to 3, wherein: the foaming agent is aluminum powder or aluminum powder paste, and the active aluminum content of the aluminum powder paste is more than or equal to 90 percent; the water reducing agent is a liquid polycarboxylic acid high-performance water reducing agent with the pH value of 6-8.
8. The high-strength concrete doped with glass slag and tailings as claimed in any one of claims 1 to 3, wherein: the foam stabilizer is sodium methyl cellulose, and the density of the sodium methyl cellulose is 0.55-0.65 g/cm3。
9. A method for preparing high-strength concrete doped with glass slag and tailings slag according to any one of claims 1 to 8, comprising the steps of:
(1) weighing glass slag, tailing slag, building solid waste and lightweight aggregate according to the weight parts, mixing, grinding, adding cement, and uniformly mixing to obtain mixed powder;
(2) weighing hollow glass microspheres, semi-hydrated gypsum, a water reducing agent and a foam stabilizer according to the parts by weight, uniformly mixing, adding a proper amount of water, uniformly stirring by using a vibration rod in a vibration mode, adding a foaming agent, and uniformly stirring to obtain mixed slurry;
(3) and (3) uniformly stirring the mixed powder in the step (1) and the mixed slurry in the step (2), and standing to prepare the high-strength concrete.
10. The method for preparing high-strength concrete doped with glass slag and tailings slag according to claim 9, wherein the method comprises the following steps: grinding the materials until the materials pass through a sieve of 80-100 meshes; the stirring speed is 3000-3500 r/min, and the time is 230-250 s; the standing time is 26-28 h, and the environmental temperature is less than 48 ℃.
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| CN117105621A (en) * | 2023-08-25 | 2023-11-24 | 广东广物金属产业集团有限公司 | High-strength concrete based on solid waste and preparation method thereof |
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2020
- 2020-10-22 CN CN202011141858.1A patent/CN112194502A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117105621A (en) * | 2023-08-25 | 2023-11-24 | 广东广物金属产业集团有限公司 | High-strength concrete based on solid waste and preparation method thereof |
| CN117105621B (en) * | 2023-08-25 | 2024-04-09 | 广东广物金属产业集团有限公司 | High-strength concrete based on solid waste and preparation method thereof |
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Application publication date: 20210108 |