Pump concrete added with steel slag magnetic separation mud powder and preparation method thereof

A technology for pumping concrete and steel slag magnetic separation, which is applied in sustainable waste treatment, solid waste management, climate sustainability, etc. The effect of reducing the pollution of "three wastes", improving workability and reducing production cost

Inactive Publication Date: 2011-05-18
ANGANG CONSTR CONSORTIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to develop a pumping concrete with steel slag magnetic separation tailings powder and its preparation method, to solve the problem that the amount of ordinary low-grade concrete powder is small, and the pipeline of the pump truck is easy to be blocked during pumping concrete construction. The problem of concrete segregation

Method used

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  • Pump concrete added with steel slag magnetic separation mud powder and preparation method thereof
  • Pump concrete added with steel slag magnetic separation mud powder and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] A pumping concrete added with steel slag magnetic separation tailings powder, made of the following admixtures in proportions by weight:

[0022] Cement: 300 parts; steel slag magnetic separation tailings powder: 50 parts; sand: 740 parts; gravel: 1050 parts; water: 200 parts; admixture: 7 parts.

[0023] According to the aforementioned preparation method, add the cement, steel slag magnetic separation tailings powder, sand, and crushed stone into the mixer according to the weight ratio, and stir and mix; then add water and additives into the forced mixer at the same time, and continue to stir evenly, that is Can be used for construction pouring.

Embodiment 2

[0025] A pumping concrete added with steel slag magnetic separation tailings powder, made of the following admixtures in proportions by weight:

[0026] Cement: 500 parts; steel slag magnetic separation tailings powder: 100 parts; sand: 650 parts; gravel: 950 parts; water: 220 parts; admixture: 15 parts.

[0027] According to the aforementioned preparation method, add the cement, steel slag magnetic separation tailings powder, sand, and crushed stone into the mixer according to the weight ratio, and stir and mix; then add water and additives into the forced mixer at the same time, and continue to stir evenly, that is Can be used for construction pouring.

Embodiment 3

[0029] A pumping concrete added with steel slag magnetic separation tailings powder, made of the following admixtures in proportions by weight:

[0030] Cement: 400 parts; steel slag magnetic separation tailings powder: 75 parts; sand: 700 parts; gravel: 1000 parts; water: 180 parts; admixture: 11 parts.

[0031] According to the aforementioned preparation method, add the cement, steel slag magnetic separation tailings powder, sand, and crushed stone into the mixer according to the weight ratio, and stir and mix; then add water and additives into the forced mixer at the same time, and continue to stir evenly, that is Can be used for construction pouring.

[0032] In the above examples, the cement is slag portland cement grade 32.5; the active ingredient content in the steel slag magnetic separation tailings powder is CaO≥25%, SiO 2 ≥10%, Al 2 o 3 ≥4%, the fineness is 0.045 micron square hole sieve, the sieve residue is less than 20%, or the sieve residue of 0.08 micron squa...

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Abstract

The invention relates o the field of premixed concrete building materials, in particular to pump concrete added with steel slag magnetic separation mud powder and a preparation method thereof. Admixtures comprise 300 to 500 weight parts of cement, 50 to 100 weight parts of steel slag magnetic separation mud powder, 700+/-50 weight parts of sand, 1,000+/-50 weight parts of gravel and 200+/-20 weight parts of water; and an additive is 2 to 2.5 percent of the total weight of the cement and the steel slag magnetic separation mud powder. The preparation method comprises the following steps of: stirring and mixing the cement, the steel slag magnetic separation mud powder, the sand and the gravel according to a weight ratio; and adding water and the additive, continuously stirring uniformly, and using the concrete for construction and pouring. The invention has the advantages that: the technical problem of low volume stability of the steel slag mud powder in the concrete is solved; the pump concrete has the fluidity of more than 16cm and the assurance factor of strength of over 99 percent, does not bleed, and has better workability; three-waste pollution is reduced; and the production cost of each cubic meter of concrete can be greatly reduced.

Description

technical field [0001] The invention relates to the field of building material ready-mixed concrete, in particular to a pumped concrete added with steel slag magnetic separation tailings powder and a preparation method thereof. Background technique [0002] At present, the hydraulic cementitious material made of open hearth furnace and converter steel slag as the main component, adding a certain amount of other admixtures and an appropriate amount of gypsum, and grinding it is called steel slag cement. Admixtures for producing steel slag cement can be slag, zeolite, fly ash, etc. In order to improve the strength of cement, sometimes Portland cement clinker not exceeding 20% ​​by weight can be added. According to the type of admixture added, steel slag cement can be divided into steel slag slag cement, steel slag pumice cement and steel slag fly ash cement. The production process of steel slag cement is simple, consisting of raw material crushing, magnetic separation, dryin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B28/08C04B18/14C04B24/00
CPCC04B5/00C04B28/02Y02W30/91C04B14/02C04B14/06C04B18/142C04B20/02C04B24/226C04B40/0028C04B2103/302C04B2103/0079
Inventor 颜世超王静柳振河
Owner ANGANG CONSTR CONSORTIUM
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