CN109704677B - Cement-based grouting material for mixing nickel slag sand and nickel slag powder for buildings and preparation method thereof - Google Patents
Cement-based grouting material for mixing nickel slag sand and nickel slag powder for buildings and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a nickel slag cement-based grouting material for an assembly type building and a preparation method thereof, wherein the nickel slag cement-based grouting material for the assembly type building is prepared from the following raw materials in parts by weight: 52 to 61 percent of nickel slag sand, 6 to 14 percent of nickel slag powder, 23 to 35 percent of cement, 10 to 17 percent of composite ultrafine powder, 1.5 to 2.5 percent of expansion regulator, 1.3 to 1.7 percent of polycarboxylic acid water reducer, 0.5 to 1.2 percent of reinforcing agent, 0.4 to 0.9 percent of defoaming agent, 0.6 to 1.2 percent of retarder and 11 to 18 percent of mixing water. The invention provides a cement-based grouting material for mixing nickel slag sand and nickel slag powder for buildings and a preparation method thereof.
Description
Technical Field
The invention relates to the field of industrial solid waste and assembled buildings, in particular to a cement-based grouting material for mixing nickel slag sand and nickel slag powder for buildings and a preparation method thereof.
Background
Since the end of the 70 s in the 20 th century, although the productivity of China is rapidly developed and the degree of urbanization is gradually deepened, the manpower cost is higher and higher with the reduction of the population dividend, and the construction field of China has a plurality of difficulties. Therefore, the fabricated building becomes a necessary trend for the development of buildings in China and even the world in the future due to the advantages of high construction speed, short construction period, low production cost, environmental protection, and the like.
The cement-based grouting material is a special expression form of concrete, is prepared by taking cement as a main cementing material, adding high-strength fine aggregate and additives with different functions, has the advantages of high fluidity, high early strength, high durability and the like, and becomes an indispensable component in the field of construction nowadays. At present, the research on the cement-based grouting material in China gradually matures. The patent CN107805019A discloses a carbon nanotube reinforced superfine cement composite grouting material and a preparation method thereof, wherein the fracture toughness and the compressive and flexural strength of the carbon nanotube reinforced cement composite grouting material are utilized, and the prepared grouting material has the advantages of micro expansibility, high fluidity and the like, and can adapt to various severe weather conditions. Patent CN106495581A discloses a grouting material for road reinforcement and a preparation method thereof, waste concrete, steel slag and iron tailing slag are adopted as main raw materials to replace a large amount of cement, the cost of the grouting material is reduced, the working degree of the grouting material is improved, and the grouting material has the advantages of high flow state, high strength, crack resistance and the like. Patent CN105198295A discloses a cement grouting material using quartz sand and steel slag as aggregate, and the invention uses a large amount of steel slag to achieve the purposes of changing waste into valuable, saving energy and reducing emission.
The nickel slag is granulated blast furnace waste slag formed by naturally air-cooling or splashing water and extremely-cooling molten nickel slag in the nickel metal smelting process, and the element composition of the granulated blast furnace waste slag is SiO2High MgO content, and the like, and has certain micro-expansibility. Compared with the nickel slag obtained by adopting an air cooling mode, the water quenching nickel slag has a large amount of glass bodies and has certain gelling activity after multistage crushing. Meanwhile, the porous shape of the surface of the nickel slag particles can be better combined with other powder materials, the filling cost is reduced, the filling quality is improved, and good social and economic benefits are achieved. At present, the resource utilization of the nickel slag in China mainly comprises cement admixture, concrete admixture, building blocks, autoclaved products, valuable metal extraction, microcrystalline glass and the like, and relatively good development is achieved.
Disclosure of Invention
In order to realize resource utilization of waste nickel slag, the invention provides a cement-based grouting material for mixing nickel slag sand and nickel slag powder for buildings and a preparation method thereof, based on micro-expansibility of nickel slag, and further, nickel slag sand and nickel slag powder obtained by crushing and ball-milling nickel slag with large doping amount are respectively used as fine aggregate and partial cementing material in a system, so that solid waste resources are recycled, and the purpose of energy saving and emission reduction is achieved 0.5 to 1.2 percent of reinforcing agent, 0.4 to 0.9 percent of defoaming agent, 0.6 to 1.2 percent of retarder and 11 to 18 percent of mixing water.
Preferably, the nickel slag sand is used as fine aggregate and is obtained by crushing nickel slag in 2-4 grades, the nominal particle size range is 0.15-2.36mm, the continuous grading is performed, the doping amount is 52-61%, and the standard requirements of GB/T14684-2011 construction sand are met.
Preferably, the nickel slag powder is used as a cementing material and is obtained by ball milling partial nickel slag sand, the granularity is 150-200 meshes, the screen residue of the nickel slag powder passing through a 80-micron square-hole sieve is less than or equal to 20 percent, and the doping amount is 6-14 percent.
Preferably, the composite ultrafine powder consists of fly ash, silica powder and ground mineral powder according to the mass ratio of 1 (0.2-0.4) to (0.6-0.8), wherein the fly ash is I-grade fly ash, and the specific surface area of the silica powder is 23000-25000 m-2/kg, the specific surface area of the ground mineral powder is 650-700 m2Kg, 10% -17% of the mixing amount.
Preferably, the expansion regulator is a medium-speed expansion regulator, wherein the content of magnesium oxide is more than or equal to 99%, the granularity is 400-600 meshes, and the mixing amount is 1.5-2.5%.
Preferably, the cement is P.II 52.5 type portland cement, and the mixing amount is 23% -35%.
Preferably, the water reducing rate of the polycarboxylate superplasticizer is 26-32%, and the mixing amount is 1.3-1.7%.
Preferably, the reinforcing agent is vinyl acetate and water-based acrylic acid copolymer emulsion, and the mixing amount is 0.5-1.2%.
Preferably, the defoaming agent is prepared from polyoxypropylene ethylene oxide glycerol ether and ethylene glycol siloxane according to the mass ratio of 1 (0.55-0.61), and the mixing amount is 0.4-0.9%.
Preferably, the retarder is prepared from lignosulfonate and boric acid according to the mass ratio of 1 (0.36-0.45), and the mixing amount is 0.6-1.2%.
The invention discloses a preparation method of a nickel slag cement-based grouting material for an assembly type building, which comprises the following specific steps:
(1) after 2-4-level crushing of the nickel slag, screening particles with the nominal particle size of 0.15-2.36mm, wherein the content of the particles is required to be ensured to be more than 60 percent and the particles are used as fine aggregate;
(2) taking the fine aggregate to perform dry ball milling for 10-15min, selecting the part with the particle size of more than 0.075mm to prepare 150-200 meshes, wherein after ball milling is performed on water-quenched nickel slag for 30min, the 45-micron screen residue is less than 1.0 percent, and the fineness of the water-quenched nickel slag is far superior to that of cement (the 80-micron screen residue is 2-4 percent), so that the nickel slag powder can be ensured to have certain fineness within 15-20 min;
(3) fully mixing the prepared nickel slag sand and nickel slag powder with cement and composite ultrafine powder for 2-3min, adding an expansion regulator, a polycarboxylic acid water reducing agent, a reinforcing agent, a defoaming agent and a retarder, mixing again,
(4) finally, adding 11-18% of mixing water, and fully stirring.
The cement-based grouting material for mixing the nickel slag sand and the nickel slag powder for the building and the preparation method thereof have the advantages that;
1. the assembled building nickel slag cement-based grouting material is based on the micro-expansibility of nickel slag, and further uses nickel slag sand and nickel slag powder obtained by crushing and ball-milling nickel slag in large amount as fine aggregate and part of cementing material in a system respectively;
2. the reinforcing agent originally adopts vinyl acetate and water-based acrylic acid copolymer emulsion, has good rheological property and dispersion property through free radical polymerization reaction, can be tightly combined with cement, composite ultrafine powder and the like when being added into slurry, obviously improves the mechanical property of the slurry, and has excellent effect;
3. the grouting material has the advantages of good fluidity, high early strength, good durability and the like, and is particularly suitable for construction application of fabricated buildings besides traditional buildings.
4. Through practical detection, the grouting material of the invention meets the index requirements of GB/T50448-.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments below:
the invention provides a cement-based grouting material for mixing nickel slag sand and nickel slag powder for buildings and a preparation method thereof.
The invention relates to a cement-based grouting material for mixing nickel slag sand and nickel slag powder for buildings, which comprises the following raw materials in part by weight;
52 to 61 percent of nickel slag sand, 6 to 14 percent of nickel slag powder, 23 to 35 percent of cement, 10 to 17 percent of composite ultrafine powder, 1.5 to 2.5 percent of expansion regulator, 1.3 to 1.7 percent of polycarboxylic acid water reducer, 0.5 to 1.2 percent of reinforcing agent, 0.4 to 0.9 percent of defoaming agent, 0.6 to 1.2 percent of retarder and 11 to 18 percent of mixing water.
The following are specific examples;
cement-based grouting material example 1 of the invention;
the cement-based grouting material for mixing the nickel slag sand and the nickel slag powder for the building is prepared from the following raw materials in percentage by mass: 53% of nickel slag sand, 9% of nickel slag powder, 26% of cement, 12% of composite ultrafine powder, 1.8% of expansion regulator, 1.4% of polycarboxylic acid water reducing agent, 0.7% of reinforcing agent, 0.5% of defoaming agent and 0.6% of retarder, wherein water consumption accounting for 16% of the mass of the grouting material is added during mixing, and the grouting material is fully and uniformly mixed.
Cement-based grouting material example 2 of the invention;
the cement-based grouting material for mixing the nickel slag sand and the nickel slag powder for the building is prepared from the following raw materials in percentage by mass: 57% of nickel slag sand, 9% of nickel slag powder, 24% of cement, 10% of composite ultrafine powder, 1.5% of expansion regulator, 1.6% of polycarboxylic acid water reducer, 0.8% of reinforcing agent, 0.7% of defoaming agent and 0.7% of retarder, wherein water consumption accounting for 14% of the mass of the grouting material is added during mixing, and the grouting material is fully and uniformly mixed.
Cement-based grouting of the invention example 3;
the cement-based grouting material for mixing the nickel slag sand and the nickel slag powder for the building is prepared from the following raw materials in percentage by mass: 57% of nickel slag sand, 7% of nickel slag powder, 24% of cement, 12% of composite ultrafine powder, 1.5% of expansion regulator, 1.8% of polycarboxylic acid water reducer, 0.8% of reinforcing agent, 0.6% of defoaming agent and 0.7% of retarder, wherein water consumption accounting for 14% of the mass of the grouting material is added during mixing, and the grouting material is fully and uniformly mixed.
Cement-based grouting of the invention example 4;
the cement-based grouting material for mixing the nickel slag sand and the nickel slag powder for the building is prepared from the following raw materials in percentage by mass: 55% of nickel slag sand, 6% of nickel slag powder, 28% of cement, 11% of composite ultrafine powder, 1.7% of expansion regulator, 1.5% of polycarboxylic acid water reducing agent, 1.0% of reinforcing agent, 0.7% of defoaming agent and 0.8% of retarder, wherein water consumption accounting for 16% of the mass of the grouting material is added during mixing, and the grouting material is fully and uniformly mixed.
Inventive cement-based grouting example 5;
the cement-based grouting material for mixing the nickel slag sand and the nickel slag powder for the building is prepared from the following raw materials in percentage by mass: 55% of nickel slag sand, 7% of nickel slag powder, 25% of cement, 13% of composite ultrafine powder, 1.9% of expansion regulator, 1.3% of polycarboxylic acid water reducing agent, 1.0% of reinforcing agent, 0.4% of defoaming agent and 0.8% of retarder, wherein water consumption accounting for 17% of the mass of the grouting material is added during mixing, and the grouting material is fully and uniformly mixed.
The performance and technical indexes of the assembled building nickel slag cement-based grouting material in the embodiments 1-5 are shown in the following table 1:
TABLE 1
The embodiment of the preparation method of the nickel slag cement-based grouting material for the fabricated building comprises the following specific steps:
(1) after 2-4-level crushing of the nickel slag, screening particles with the nominal particle size of 0.15-2.36mm, wherein the content of the particles is required to be ensured to be more than 60 percent and the particles are used as fine aggregate;
(2) taking the fine aggregate to perform dry ball milling for 10-15min, selecting the part with the particle size of more than 0.075mm to prepare 150-200 meshes, wherein after ball milling is performed on water-quenched nickel slag for 30min, the 45-micron screen residue is less than 1.0 percent, and the fineness of the water-quenched nickel slag is far superior to that of cement (the 80-micron screen residue is 2-4 percent), so that the nickel slag powder can be ensured to have certain fineness within 15-20 min;
(3) fully mixing the prepared nickel slag sand and nickel slag powder with cement and composite ultrafine powder for 2-3min, adding an expansion regulator, a polycarboxylic acid water reducing agent, a reinforcing agent, a defoaming agent and a retarder, mixing again,
(4) finally, adding 11-18% of mixing water, and fully stirring.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, but any modifications or equivalent variations made according to the technical spirit of the present invention are within the scope of the present invention as claimed.
Claims (1)
1. The nickel slag cement-based grouting material for the building is prepared from the following raw materials in parts by weight and is characterized in that: 52 to 61 percent of nickel slag sand, 6 to 14 percent of nickel slag powder, 23 to 35 percent of cement, 10 to 17 percent of composite superfine powder, 1.5 to 2.5 percent of expansion regulator, 1.3 to 1.7 percent of polycarboxylic acid water reducer, 0.5 to 1.2 percent of reinforcing agent, 0.4 to 0.9 percent of defoaming agent, 0.6 to 1.2 percent of retarder and 11 to 18 percent of mixing water;
the nickel slag sand is used as fine aggregate and is obtained by crushing nickel slag by 2-4 grades, the nominal particle size range is 0.15-2.36mm, the continuous grading is carried out, and the doping amount is 52% -61%;
the nickel slag powder is used as a cementing material and is obtained by ball milling partial nickel slag sand, the granularity is 150-200 meshes, the screen residue of the nickel slag powder passing through a 80-micron square-hole sieve is less than or equal to 20 percent, and the doping amount is 6-14 percent;
the composite superfine powder consists of fly ash, silica powder and ground mineral powder in the mass ratio of 1 (0.2-0.4) to (0.6-0.8), the fly ash is I-grade fly ash, and the specific surface area of the silica powder is 23000-25000 m2/kg, the specific surface area of the ground mineral powder is 650-700 m2Per kg, the mixing amount is 10-17 percent;
the expansion regulator is a medium-speed expansion regulator, wherein the content of magnesium oxide is more than or equal to 99 percent, the granularity is 400-plus-600 meshes, and the mixing amount is 1.5 to 2.5 percent;
the cement is P.II 52.5 type portland cement, and the mixing amount is 23-35%;
the water reducing rate of the polycarboxylate superplasticizer is 26-32%, and the mixing amount is 1.3-1.7%;
the reinforcing agent is vinyl acetate and water-based acrylic acid copolymer emulsion, and the mixing amount is 0.5-1.2%;
the defoaming agent is prepared from polyoxypropylene ethylene oxide glycerol ether and ethylene glycol siloxane according to the mass ratio of 1 (0.55-0.61), the mixing amount is 0.4-0.9%, the retarder is prepared from lignosulfonate and boric acid according to the mass ratio of 1 (0.36-0.45), and the mixing amount is 0.6-1.2%.
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| CN110981322B (en) * | 2020-01-14 | 2021-09-24 | 淮阴工学院 | Ferronickel slag aggregate concrete |
| CN112645657B (en) * | 2020-12-28 | 2022-06-03 | 湖北工业大学 | Fabricated concrete prepared by multistage treatment of nickel slag and application thereof |
| CN113121187B (en) * | 2021-04-12 | 2022-08-09 | 山东大学 | Industrial solid waste base grouting casing sealing material and preparation method thereof |
| CN113880517A (en) * | 2021-10-12 | 2022-01-04 | 新余学院 | Nickel slag cement-based grouting material for fabricated building and preparation method thereof |
| CN114031349A (en) * | 2021-11-30 | 2022-02-11 | 江苏博拓新型建筑材料股份有限公司 | Wind power high-strength grouting material and preparation method thereof |
| CN114195467A (en) * | 2021-12-27 | 2022-03-18 | 湖北工业大学 | Polymer modified nickel slag waterproof mortar and preparation method thereof |
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