CN112830732A - Concrete doped with multi-element admixture and preparation method thereof - Google Patents
Concrete doped with multi-element admixture and preparation method thereof Download PDFInfo
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- CN112830732A CN112830732A CN202110069895.4A CN202110069895A CN112830732A CN 112830732 A CN112830732 A CN 112830732A CN 202110069895 A CN202110069895 A CN 202110069895A CN 112830732 A CN112830732 A CN 112830732A
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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
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland 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
- C04B2111/00017—Aspects relating to the protection of the environment
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Abstract
The invention belongs to the field of building material preparation, and particularly relates to concrete doped with a multi-element admixture and a preparation method thereof. The invention comprises cement, multi-element admixture, iron tailing sand fine aggregate, natural sand, broken stone, waste stone and a water reducing agent, wherein each cubic meter of the concrete comprises 215kg-230kg of cement, 200kg-215kg of multi-element admixture, 260kg-300kg of iron tailing sand, 260kg-300kg of natural sand, 320kg-360kg of broken stone and 840kg-880kg of iron tailing waste stone; wherein the weight ratio of the multi-element admixture is iron tailings: desulfurization ash: slag: fly ash: silica fume =5:2:1:0.5: 0.2; the invention has low cost and environmental protection, utilizes the complementation of the defects of the synergistic collocation of the multiple solid wastes and the grading optimization of the aggregates to ensure compact structure, and ensures that the early strength and the later strength of the concrete are improved while the solid waste mixing amount is large.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to concrete doped with a multi-element admixture and a preparation method thereof.
Background
"Green high performance concrete" is the concept first proposed in 1998 by Wuzhong Wei academy, and will represent the future concrete development direction and is the only inevitable choice for concrete development. The concept of the green high-performance concrete mainly comprises the meanings of effectively saving resources and energy, not damaging the existing environment, and being more beneficial to the sustainable development of the environment so as to meet the development requirements of contemporary and later generations. Therefore, the development of a large amount of accumulated solid waste as a raw material of concrete will be a necessary requirement for the development of green high-performance environment-friendly concrete.
2011 + 2018, the utilization rate of the main bulk industrial solid waste in China is as follows: 17.01 to 26.04 percent of tailings; 4.65 to 5.05 percent of red mud; 83.23% -96.75% of steel slag; 54.76% -94.12% of nonferrous smelting slag; 62.22% -72.08% of coal gangue; 67.96% -83.27% of fly ash; 46.15-56.67% of industrial by-product gypsum. Therefore, the utilization rate of industrial wastes such as tailings, red mud, coal gangue and fly ash is low, and further improvement is urgently needed. And the accumulation of tailings brings about a number of adverse consequences: the method has the advantages of environmental pollution, large land occupation, high accumulation cost, serious safety accidents and resource waste.
The iron tailings have different tailings components and contents due to different iron ore producing areas and different ore dressing processes. However, the chemical components of the iron tailings mainly comprise oxides of silicon, aluminum, calcium and magnesium and a small amount of oxides of potassium, sodium, iron and sulfur, the main minerals are quartz and feldspar minerals, and the components of the minerals are basically the same as those of natural sand minerals, so that the precondition is provided for the wide application of the tailings in the building material industry. In previous researches, the researches of iron tailings on the aspect of preparing concrete mainly focus on the problems that the iron tailings are applied to concrete as active powder, concrete as fine aggregate or concrete as coarse aggregate, the iron tailings are applied singly and are low in mixing amount, the early strength is reduced when the iron tailings are used as an active admixture in a large mixing amount, the later strength is obviously reduced when the iron tailings are used as fine aggregates, and the concrete strength and the durability are poor due to poor natural grading. The effects of incorporating different mineral admixtures into concrete are different, and each mineral admixture also has its own drawbacks.
Disclosure of Invention
In order to solve the technical problems, the invention provides a concrete doped with a multi-element admixture and a preparation method thereof, wherein the raw materials comprise cement, the multi-element admixture, iron tailing sand fine aggregate, natural sand, broken stone, waste stone and a water reducing agent, and each cubic meter of the concrete comprises 215kg-230kg of cement, 200kg-215kg of the multi-element admixture, 260kg-300kg of iron tailing sand, 260kg-300kg of natural sand, 320kg-360kg of broken stone and 840kg-880kg of iron tailing waste stone; wherein the multi-element admixture comprises the following components: desulfurization ash: slag: fly ash: silica fume =5:2:1:0.5: 0.2. The invention has low cost and environmental protection, utilizes the complementation of the defects of the synergistic collocation of the multiple solid wastes and the grading optimization of the aggregates to ensure compact structure, and ensures that the early strength and the later strength of the concrete are improved while the solid waste mixing amount is large.
The technical scheme adopted by the invention is as follows:
the concrete with the multi-element admixture comprises cement, the multi-element admixture, iron tailing sand fine aggregate, natural sand, broken stone, waste stone and a water reducing agent, wherein each cubic meter of the concrete comprises 215kg-230kg of cement, 200kg-215kg of the multi-element admixture, 260kg-300kg of the iron tailing sand, 260kg-300kg of the natural sand, 320kg-360kg of the broken stone and 840kg-880kg of the iron tailing waste stone; wherein the multi-element admixture comprises the following components: desulfurization ash: slag: fly ash: the silica fume =5:2:1:0.5:0.2, and the concrete preparation process comprises the following steps:
1) screening and grading the iron tailings by using a 0.08mm square-hole sieve, wherein the part above the sieve is used as concrete fine aggregate, and the part below the sieve is used for preparing admixture
2) Mixing the sieved iron tailings with the desulfurized fly ash, the slag, the fly ash and the silica fume in proportion, and grinding for two hours by using a ball mill to prepare the multi-element admixture
3) Mixing cement, multi-element admixture, iron tailing sand fine aggregate and natural sand according to a ratio, and uniformly stirring
4) Mixing the water reducing agent with water, and stirring uniformly
5) Adding the mixed liquid of the water reducing agent and the water into the mixture prepared in the step 3), and stirring for 2-3min by using a stirrer
6) Mixing the iron tailing waste stone and the broken stone according to the proportion, adding the mixture into the slurry prepared in the step 5), and uniformly stirring to prepare the concrete doped with the multi-element admixture
Furthermore, the maximum particle size of the iron ore sand fine aggregate is 4.75mm, the content of the stone powder is less than 1.5 percent, and a proper amount of stone powder serving as an inert filler can play a role in improving the strength
Further, the water-cement ratio of the concrete is 0.28-0.32.
Further, the cement is P42.5 ordinary portland cement.
Furthermore, the particle size distribution of the crushed stone and the iron tailing waste stone coarse aggregate is 4.75-25 mm.
Further, the water reducing agent is a polycarboxylic acid high-performance water reducing agent, and the mixing amount is 1% of the weight of the concrete.
Further, the main components of the iron tailings are 75-85% of silicon dioxide, 5-10% of ferric oxide, 0.2-0.8% of aluminum oxide and 0.5-0.6% of calcium oxide.
Furthermore, the main components of the desulfurized ash are 4.2-5.1% of calcium chloride, 32.3-35% of sulfur trioxide, 0.5-1.2% of ferric oxide, 35.6-38% of calcium oxide, 2-3% of magnesium oxide, 0.1-0.3% of aluminum oxide and 0.5-1% of silicon dioxide.
Furthermore, the slag mainly comprises 40-45% of calcium oxide, 35-40% of silicon dioxide, 8-12% of aluminum oxide, 1-2% of ferric oxide and 5-8% of magnesium oxide.
Furthermore, the main components of the fly ash are 40-45% of silicon dioxide, 45-50% of aluminum oxide, 5-8% of ferric oxide, 1-2% of calcium oxide and 1-2% of magnesium oxide.
Furthermore, the main components of the silica fume are 90-95% of silicon dioxide, 0.1-1% of calcium oxide, 0.1-1% of aluminum oxide, 1-2% of ferric oxide and 1-2% of magnesium oxide.
The invention has the beneficial effects that:
1) the concrete structure is more compact and the durability is improved. The iron tailings are high in water absorption rate, a small-range water storage area can be formed in the iron tailings, later-stage hydration is facilitated, the structure can be compact due to filling of a hydration product into pores, the coal ash can be doped to reduce water consumption, the coal ash can be uniformly distributed in cement particles in the cement hydration process, the cement particles are prevented from being aggregated, the hydration reaction is more sufficient, and the compactness of concrete is further improved.
2) The early strength and the later strength are improved, and the interface transition region is obviously improved. The addition of the slag in the admixture creates conditions for improving the hydration space of the cement, and the pozzolanic activity of the slag ensures that calcium hydroxide in a hydration product reduces water, promotes the early hydration of the cement and is beneficial to the increase of the later strength of the concrete. In addition, the gel generated after secondary hydration of the slag can improve the compactness and uniformity of concrete, and under the cooperation of the fly ash, a large amount of gel can be generated by active silicon dioxide and alumina in the fly ash, so that the improvement effect on an interface transition region is further enhanced. The incorporation of silica fume will further enhance the above reaction, reducing the average size of the interfacial transition zone, making the bond between the matrix and the aggregate more dense.
3) The solid waste replacement rate is high, the performance is guaranteed, and the method is green, environment-friendly and economical. The admixture is made of solid wastes, the dosage of the substitute cement can reach 40-50 percent, the problems of energy consumption and natural resource consumption caused by cement production are solved, and the cost is reduced. The aggregate is replaced by the iron tailings, and the fine aggregate of the iron tailings sand is matched with the natural sand, so that the problem of poor natural grading of the iron tailings sand is solved, the working performance and the mechanical performance of the concrete are ensured, and the total replacement rate can reach 60%.
Detailed Description
The present invention will be described in detail with reference to examples.
Example 1
The concrete doped with the multi-element admixture comprises cement, the multi-element admixture, iron tailing sand fine aggregate, natural sand, broken stone, waste stone and a water reducing agent, wherein each cubic meter of the concrete comprises 230kg of cement, 200kg of the multi-element admixture, 280kg of the iron tailing sand, 280kg of the natural sand, 360kg of the broken stone and 840kg of the iron tailing waste stone; wherein the multi-element admixture comprises the following components: desulfurization ash: slag: fly ash: the silica fume =5:2:1:0.5:0.2, and the concrete preparation process comprises the following steps:
1) screening and grading the iron tailings by using a 0.08mm square-hole sieve, wherein the part above the sieve is used as concrete fine aggregate, and the part below the sieve is used for preparing admixture;
2) mixing the sieved iron tailings with desulfurization ash, slag, fly ash and silica fume in proportion, and grinding for two hours by using a ball mill to prepare a multi-element admixture;
3) mixing cement, multi-element admixture, iron tailing sand fine aggregate and natural sand according to a ratio, and uniformly stirring
4) Mixing the water reducing agent with water, and uniformly stirring;
5) adding a mixed solution of a water reducing agent and water into the mixture prepared in the step 3), and stirring for 2-3min by using a stirrer;
6) mixing the iron tailing waste stone and the broken stone according to the proportion, adding the mixture into the slurry prepared in the step 5), and uniformly stirring to prepare the concrete doped with the multi-element admixture;
the maximum particle size of the iron ore sand fine aggregate is 4.75mm, and the content of stone powder is less than 1.5%;
the water-cement ratio of the concrete is 0.28;
the cement is P.42.5 ordinary Portland cement;
the particle size distribution of the crushed stone and iron tailing waste stone coarse aggregate is 4.75-25 mm;
the water reducing agent is a polycarboxylic acid high-performance water reducing agent, and the mixing amount is 1% of the weight of the concrete;
the main components of the iron tailings are 75-85% of silicon dioxide, 5-10% of ferric oxide, 0.2-0.8% of aluminum oxide and 0.5-0.6% of calcium oxide.
The main components of the desulfurization ash are 4.2-5.1 percent of calcium chloride, 32.3-35 percent of sulfur trioxide, 0.5-1.2 percent of ferric oxide, 35.6-38 percent of calcium oxide, 2-3 percent of magnesium oxide, 0.1-0.3 percent of aluminum oxide and 0.5-1 percent of silicon dioxide.
The main components of the slag are 40-45% of calcium oxide, 35-40% of silicon dioxide, 8-12% of aluminum oxide, 1-2% of ferric oxide and 5-8% of magnesium oxide.
The main components of the fly ash are 40-45% of silicon dioxide, 45-50% of aluminum oxide, 5-8% of ferric oxide, 1-2% of calcium oxide and 1-2% of magnesium oxide.
The main components of the silica fume are 90-95% of silicon dioxide, 0.1-1% of calcium oxide, 0.1-1% of aluminum oxide, 1-2% of ferric oxide and 1-2% of magnesium oxide.
Example 2
The concrete doped with the multi-element admixture comprises cement, the multi-element admixture, iron tailing sand fine aggregate, natural sand, broken stone, waste stone and a water reducing agent, wherein each cubic meter of the concrete comprises 220kg of cement, 210kg of the multi-element admixture, 260kg of the iron tailing sand, 300kg of the natural sand, 340kg of the broken stone and 860kg of the iron tailing waste stone; wherein the multi-element admixture comprises the following components: desulfurization ash: slag: fly ash: the silica fume =5:2:1:0.5:0.2, and the concrete preparation process comprises the following steps:
1) screening and grading the iron tailings by using a 0.08mm square-hole sieve, wherein the part above the sieve is used as concrete fine aggregate, and the part below the sieve is used for preparing admixture
2) Mixing the sieved iron tailings with the desulfurized fly ash, the slag, the fly ash and the silica fume in proportion, and grinding for two hours by using a ball mill to prepare the multi-element admixture
3) Mixing cement, multi-element admixture, iron tailing sand fine aggregate and natural sand according to a ratio, and uniformly stirring
4) Mixing the water reducing agent with water, and stirring uniformly
5) Adding the mixed liquid of the water reducing agent and the water into the mixture prepared in the step 3), and stirring for 2-3min by using a stirrer
6) Mixing the iron tailing waste stone and the broken stone according to the proportion, adding the mixture into the slurry prepared in the step 5), and uniformly stirring to prepare the concrete doped with the multi-element admixture
The iron ore sand fine aggregate has a maximum particle size of 4.75mm and a stone powder content of less than 1.5%
The water-cement ratio of the concrete is 0.30
The cement is P.42.5 ordinary Portland cement
The particle size distribution of the broken stone and iron tailing waste stone coarse aggregate is 4.75-25mm
The water reducing agent is a polycarboxylic acid high-performance water reducing agent, and the mixing amount of the water reducing agent is 1 percent of the weight of the concrete
The main components of the iron tailings are 75 to 85 percent of silicon dioxide, 5 to 10 percent of ferric oxide, 0.2 to 0.8 percent of aluminum oxide and 0.5 to 0.6 percent of calcium oxide
The main components of the desulfurization ash are 4.2 to 5.1 percent of calcium chloride, 32.3 to 35 percent of sulfur trioxide, 0.5 to 1.2 percent of ferric oxide, 35.6 to 38 percent of calcium oxide, 2 to 3 percent of magnesium oxide, 0.1 to 0.3 percent of aluminum oxide and 0.5 to 1 percent of silicon dioxide
The main components of the slag are 40-45% of calcium oxide, 35-40% of silicon dioxide, 8-12% of aluminum oxide, 1-2% of ferric oxide and 5-8% of magnesium oxide.
The main components of the fly ash are 40-45% of silicon dioxide, 45-50% of aluminum oxide, 5-8% of ferric oxide, 1-2% of calcium oxide and 1-2% of magnesium oxide.
The main components of the silica fume are 90-95% of silicon dioxide, 0.1-1% of calcium oxide, 0.1-1% of aluminum oxide, 1-2% of ferric oxide and 1-2% of magnesium oxide.
Example 3
The concrete mixed with the multi-element admixture comprises cement, the multi-element admixture, iron tailing sand fine aggregate, natural sand, broken stone, waste stone and a water reducing agent, wherein each cubic meter of the concrete comprises 215kg of cement, 215kg of the multi-element admixture, 300kg of the iron tailing sand, 260kg of the natural sand, 320kg of the broken stone and 880kg of the iron tailing waste stone; wherein the multi-element admixture comprises the following components: desulfurization ash: slag: fly ash: the silica fume =5:2:1:0.5:0.2, and the concrete preparation process comprises the following steps:
1) screening and grading the iron tailings by using a 0.08mm square-hole sieve, wherein the part above the sieve is used as concrete fine aggregate, and the part below the sieve is used for preparing admixture
2) Mixing the sieved iron tailings with the desulfurized fly ash, the slag, the fly ash and the silica fume in proportion, and grinding for two hours by using a ball mill to prepare the multi-element admixture
3) Mixing cement, multi-element admixture, iron tailing sand fine aggregate and natural sand according to a ratio, and uniformly stirring
4) Mixing the water reducing agent with water, and stirring uniformly
5) Adding the mixed liquid of the water reducing agent and the water into the mixture prepared in the step 3), and stirring for 2-3min by using a stirrer
6) Mixing the iron tailing waste stone and the broken stone according to the proportion, adding the mixture into the slurry prepared in the step 5), and uniformly stirring to prepare the concrete doped with the multi-element admixture
The iron ore sand fine aggregate has a maximum particle size of 4.75mm and a stone powder content of less than 1.5%
The water-cement ratio of the concrete is 0.32
The cement is P.42.5 ordinary Portland cement
The particle size distribution of the broken stone and iron tailing waste stone coarse aggregate is 4.75-25mm
The water reducing agent is a polycarboxylic acid high-performance water reducing agent, and the mixing amount of the water reducing agent is 1 percent of the weight of the concrete
The main components of the iron tailings are 75 to 85 percent of silicon dioxide, 5 to 10 percent of ferric oxide, 0.2 to 0.8 percent of aluminum oxide and 0.5 to 0.6 percent of calcium oxide
The main components of the desulfurization ash are 4.2 to 5.1 percent of calcium chloride, 32.3 to 35 percent of sulfur trioxide, 0.5 to 1.2 percent of ferric oxide, 35.6 to 38 percent of calcium oxide, 2 to 3 percent of magnesium oxide, 0.1 to 0.3 percent of aluminum oxide and 0.5 to 1 percent of silicon dioxide
The main components of the slag are 40-45% of calcium oxide, 35-40% of silicon dioxide, 8-12% of aluminum oxide, 1-2% of ferric oxide and 5-8% of magnesium oxide.
The main components of the fly ash are 40-45% of silicon dioxide, 45-50% of aluminum oxide, 5-8% of ferric oxide, 1-2% of calcium oxide and 1-2% of magnesium oxide.
The main components of the silica fume are 90-95% of silicon dioxide, 0.1-1% of calcium oxide, 0.1-1% of aluminum oxide, 1-2% of ferric oxide and 1-2% of magnesium oxide.
The foregoing is directed to the preferred embodiment of the present invention, and it is understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims (9)
1. The concrete doped with the multi-element admixture is characterized in that raw materials of the concrete comprise cement, the multi-element admixture, iron tailing sand fine aggregate, natural sand, broken stone, waste stone and a water reducing agent, wherein each cubic meter of the concrete comprises 215kg-230kg of cement, 200kg-215kg of the multi-element admixture, 260kg-300kg of the iron tailing sand, 260kg-300kg of the natural sand, 320kg-360kg of the broken stone and 840kg-880kg of the iron tailing waste stone; wherein the weight ratio of the multi-element admixture is iron tailings: desulfurization ash: slag: fly ash: the silica fume =5:2:1:0.5:0.2, and the concrete preparation process comprises the following steps:
1) screening and grading the iron tailings by using a 0.08mm square-hole sieve, wherein the part above the sieve is used as concrete fine aggregate, and the part below the sieve is used for preparing admixture;
2) mixing the sieved iron tailings with desulfurization ash, slag, fly ash and silica fume in proportion, and grinding for two hours by using a ball mill to prepare a multi-element admixture;
3) mixing cement, multi-element admixture, iron tailing sand fine aggregate and natural sand according to a ratio, and uniformly stirring;
4) mixing the water reducing agent with water, and uniformly stirring;
5) adding a mixed solution of a water reducing agent and water into the mixture prepared in the step 3), and stirring for 2-3min by using a stirrer;
6) and (3) mixing the iron tailing waste stone and the broken stone according to the proportion, adding the mixture into the slurry prepared in the step 5), and uniformly stirring to obtain the concrete doped with the multi-element admixture.
2. The concrete doped with the multi-element admixture as claimed in claim 1, wherein: the maximum particle size of the iron ore sand fine aggregate is 4.75mm, and the content of the stone powder is less than 1.5 percent.
3. The concrete doped with the multi-element admixture as claimed in claim 1, wherein: the water-cement ratio of the concrete is 0.28-0.32.
4. The concrete doped with the multi-element admixture as claimed in claim 1, wherein: the particle size distribution of the crushed stone and the iron tailing waste stone coarse aggregate is 4.75-25 mm.
5. The concrete doped with the multi-element admixture as claimed in claim 1, wherein: the water reducing agent is a polycarboxylic acid high-performance water reducing agent, and the mixing amount is 1% of the weight of the concrete.
6. The concrete doped with the multi-element admixture as claimed in claim 1, wherein: the main components of the iron tailings are 75-85% of silicon dioxide, 5-10% of ferric oxide, 0.2-0.8% of aluminum oxide and 0.5-0.6% of calcium oxide.
7. The concrete doped with the multi-element admixture as claimed in claim 1, wherein: the main components of the desulfurization ash are 4.2 to 5.1 percent of calcium chloride, 32.3 to 35 percent of sulfur trioxide, 0.5 to 1.2 percent of ferric oxide, 35.6 to 38 percent of calcium oxide, 2 to 3 percent of magnesium oxide, 0.1 to 0.3 percent of aluminum oxide and 0.5 to 1 percent of silicon dioxide
The concrete doped with the multi-element admixture as claimed in claim 1, wherein: the main components of the slag are 40-45% of calcium oxide, 35-40% of silicon dioxide, 8-12% of aluminum oxide, 1-2% of ferric oxide and 5-8% of magnesium oxide.
8. The concrete doped with the multi-element admixture as claimed in claim 1, wherein: the main components of the fly ash are 40-45% of silicon dioxide, 45-50% of aluminum oxide, 5-8% of ferric oxide, 1-2% of calcium oxide and 1-2% of magnesium oxide.
9. The concrete doped with the multi-element admixture as claimed in claim 1, wherein: the main components of the silica fume are 90-95% of silicon dioxide, 0.1-1% of calcium oxide, 0.1-1% of aluminum oxide, 1-2% of ferric oxide and 1-2% of magnesium oxide.
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| CN113956001A (en) * | 2021-12-10 | 2022-01-21 | 吉林建筑科技学院 | Iron tailing-desulfurized ash-steel slag multi-element system concrete and preparation method thereof |
| CN114716199A (en) * | 2022-01-26 | 2022-07-08 | 山东大元实业股份有限公司 | Method for preparing ultra-high performance concrete by utilizing industrial solid wastes |
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| CN107500657A (en) * | 2017-09-22 | 2017-12-22 | 大连地拓环境科技有限公司 | A kind of sleeper concrete of superfine suspension roasting iron tailings as mineral admixture |
| CN110885203A (en) * | 2019-11-20 | 2020-03-17 | 北京建筑材料科学研究总院有限公司 | Composite mineral admixture and preparation method thereof |
| AU2020101143A4 (en) * | 2020-06-25 | 2020-07-30 | Qian'an Weisheng Solid Waste Environmental Protection Industry Co., Ltd | A Method For Preparing The Fast-Hardening Early-Strength High-Performance All-Solid Waste Concrete |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113956001A (en) * | 2021-12-10 | 2022-01-21 | 吉林建筑科技学院 | Iron tailing-desulfurized ash-steel slag multi-element system concrete and preparation method thereof |
| CN114716199A (en) * | 2022-01-26 | 2022-07-08 | 山东大元实业股份有限公司 | Method for preparing ultra-high performance concrete by utilizing industrial solid wastes |
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Application publication date: 20210525 |