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Iron tailing-fly ash-polystyrene blended concrete wall material and preparation method thereof

A concrete wall and polystyrene technology, applied in the field of building materials engineering, can solve the problems of high cost of cementitious materials, low strength of foam concrete, and high thermal conductivity

Pending Publication Date: 2021-05-18
NORTHEASTERN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing foam concrete slabs have the following disadvantages: (1) The cost of the cementitious material is high; (2) The thermal conductivity is high; (3) The weight is large; (4) The strength of the foam concrete is not high, generally 300~500kg / m 3 The foam concrete strength is difficult to meet the wall strength requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A concrete wall material blended with iron tailings-fly ash-polystyrene, comprising the following raw materials in parts by weight: 45 parts of iron tailings, 15 parts of cement clinker, 5 parts of silica fume, and 11.4 parts of machine-made sand , 23 parts of fly ash, 0.6 parts of polystyrene foam particles, 0.2 parts of polypropylene fiber, 20 parts of water, 1.2 parts of superplasticizer, 0.05 parts of hydroxypropyl methylcellulose HPMC, 0.05 parts of redispersible latex powder .

[0036] The iron tailings are high-silicon type iron tailings, including the following raw materials by weight: SiO 2 65~68.44 parts, Fe 2 o 3 9.125~10.9 parts, Al 2 o 3 7.89~8.10 copies, S0 3 5.37~6.44 parts, CaO2.53~2.91 parts.

[0037] The cement clinker is 42.5 ordinary Portland cement; the particle size of the micro-silica fume is 0.1-0.3um, wherein the SiO2 content is ≥ 90%;

[0038] The fineness modulus of the machine-made sand is 1.6-2.2, and the particle size is 0.15-4.75mm....

Embodiment 2

[0055] A concrete wall material mixed with iron tailings-fly ash-polystyrene, comprising the following raw materials in parts by weight: 50 parts of iron tailings, 13.1 parts of cement clinker, 4.5 parts of silica fume, and 11 parts of machine-made sand , 21 parts of fly ash, 0.4 parts of polystyrene foam particles, 0.3 parts of polypropylene fiber, 25 parts of water, 1.0 parts of superplasticizer, 0.1 part of hydroxypropyl methylcellulose HPMC, 0.1 part of redispersible latex powder share.

[0056] The preparation method of the concrete wall material of described mixing iron tailings-fly ash-polystyrene comprises the following steps:

[0057] (1) Perform anhydrous mixing and stirring of the cement clinker, silica fume and fly ash in the parts by weight;

[0058] (2) Stir the hydroxypropyl methylcellulose HPMC with water to make a mixed solution evenly, and immerse the polystyrene foam particles to make the liquid adsorb and wrap on the surface and internal shallow surface of...

Embodiment 3

[0067] A concrete wall material blended with iron tailings-fly ash-polystyrene, comprising the following raw materials in parts by weight: 55 parts of iron tailings, 12.7 parts of cement clinker, 4.5 parts of silica fume, and 9 parts of machine-made sand , 18.3 parts of fly ash, 0.5 parts of polystyrene foam particles, 0.4 parts of polypropylene fiber, 30 parts of water, 0.9 parts of superplasticizer, 0.15 parts of hydroxypropyl methylcellulose HPMC, 0.15 parts of redispersible latex powder .

[0068] The preparation method of the concrete wall material of described mixing iron tailings-fly ash-polystyrene comprises the following steps:

[0069] (1) Perform anhydrous mixing and stirring of the cement clinker, silica fume and fly ash in the parts by weight;

[0070] (2) Stir the hydroxypropyl methylcellulose HPMC with water to make a mixed solution evenly, and immerse the polystyrene foam particles to make the liquid adsorb and wrap on the surface and internal shallow surface ...

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Abstract

The invention relates to an iron tailing-fly ash-polystyrene blended concrete wall material and a preparation method thereof, and belongs to the technical field of building material engineering, the iron tailing-fly ash-polystyrene blended concrete wall material comprises the following raw materials by weight: 45 parts to 60 parts of iron tailings, 12.4 parts to 15 parts of cement clinker, 4.2 parts to 5 parts of micro silica fume, 7 parts to 11.4 parts of machine-made sand, 16 parts to 23 parts of fly ash, 0.4 part to 0.6 part of polystyrene foam particles, 0.2 part to 0.4 part of polypropylene fiber, 20 parts to 30 parts of water, 0.8 part to 1.5 parts of a high-efficiency water reducing agent, 0.05 part to 0.2 part of hydroxypropyl methyl cellulose HPMC and 0.05 part to 0.2 part of redispersible latex powder. The material has the advantages that the cost is reduced, the environmental pollution is reduced, and the resource waste is avoided; the process is simple, operation is convenient, and installation is convenient; and the material has the advantages of light weight, fire resistance, sound insulation, moisture resistance, shock resistance, good durability, strong adhesiveness and the like.

Description

technical field [0001] The invention belongs to the technical field of building material engineering, in particular to a concrete wall material mixed with iron tailings-fly ash-polystyrene and a preparation method thereof. Background technique [0002] The wall is the main component of the building, which has the characteristics of load bearing, space separation, good sound insulation performance, heat preservation, and heat insulation. For a long time, fired clay bricks have been used as the main material for walls. Fired bricks have the disadvantages of heavy weight, small size, high production energy consumption, low construction efficiency, and destruction of a large amount of cultivated land. Therefore, some new wall materials have been replaced, mainly light-weight slatted exterior wall panels, of which autoclaved aerated concrete wall panels account for a relatively high proportion, but in my country, such products are relatively low in integration and often have wate...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B14/06C04B16/08C04B18/08C04B18/12C04B18/14
CPCC04B14/06C04B16/08C04B18/08C04B18/12C04B18/146C04B28/04C04B2201/20C04B2201/50C04B16/0633C04B2103/302C04B24/383C04B2103/0057Y02W30/91
Inventor 顾晓薇葛晓伟刘朋王诗凝邹明欣王禹升
Owner NORTHEASTERN UNIV
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