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Tailings slag doped high-strength wear-resistant concrete and preparation method thereof

A tailings slag, high-strength technology, applied in the field of concrete, can solve the problem that the utilization of tailings slag has not been developed on a large scale, and achieve the effects of high practicability and production value, reducing costs and improving hydration activity.

Active Publication Date: 2022-03-22
ZHONGSHA CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, there are not many concretes mixed with tailings slag in the existing technology, and the utilization of tailings slag has not been developed on a large scale. Tailings slag can be used as concrete for various purposes, and the effects are also different. Utilization effect of slag-doped concrete, the application discloses a tailings slag-doped high-strength wear-resistant concrete and its preparation method

Method used

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  • Tailings slag doped high-strength wear-resistant concrete and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0055] A method for preparing high-strength wear-resistant concrete doped with tailings slag, characterized in that:

[0056] Include the following steps:

[0057] S1: Grinding the tailings slag three times to obtain tailings slag fine powder;

[0058] S2: preparing polyacrylamide, blending with tailings slag fine powder to obtain a composite material;

[0059] S3: Grinding the composite material, lime, and gypsum, and mixing and stirring to obtain a mixture A;

[0060] S4: mix the coarse aggregate, fine aggregate, water reducer, and defoamer evenly, add foaming agent, stir evenly, and prepare mixture B;

[0061] S5: mixing the mixture A, the mixture B, and the cement clinker, stirring evenly, and casting to form a precast concrete;

[0062] S6: Curing the poured prefabricated concrete in a pressure steam environment to obtain high-strength wear-resistant concrete.

[0063] Among them, S1:

[0064] Put 15 to 25 parts of tailings slag in a jaw crusher and crush them into s...

Embodiment 2

[0078] A method for preparing high-strength wear-resistant concrete doped with tailings slag, characterized in that:

[0079] Include the following steps:

[0080] S1: Grinding the tailings slag three times to obtain tailings slag fine powder;

[0081] S2: preparing polyacrylamide, blending with tailings slag fine powder to obtain a composite material;

[0082] S3: Grinding the composite material, lime, and gypsum, and mixing and stirring to obtain a mixture A;

[0083] S4: mix the coarse aggregate, fine aggregate, water reducer, and defoamer evenly, add foaming agent, stir evenly, and prepare mixture B;

[0084] S5: mixing the mixture A, the mixture B, and the cement clinker, stirring evenly, and casting to form a precast concrete;

[0085] S6: Curing the poured prefabricated concrete in a pressure steam environment to obtain high-strength wear-resistant concrete.

[0086] Among them, S1:

[0087] Put 20 parts of tailings slag in a jaw crusher and crush it into small par...

Embodiment 3

[0101] A method for preparing high-strength wear-resistant concrete doped with tailings slag, characterized in that:

[0102] Include the following steps:

[0103] S1: Grinding the tailings slag three times to obtain tailings slag fine powder;

[0104] S2: preparing polyacrylamide, blending with tailings slag fine powder to obtain a composite material;

[0105] S3: Grinding the composite material, lime, and gypsum, and mixing and stirring to obtain a mixture A;

[0106] S4: mix the coarse aggregate, fine aggregate, water reducer, and defoamer evenly, add foaming agent, stir evenly, and prepare mixture B;

[0107] S5: mixing the mixture A, the mixture B, and the cement clinker, stirring evenly, and casting to form a precast concrete;

[0108] S6: Curing the poured prefabricated concrete in a pressure steam environment to obtain high-strength wear-resistant concrete.

[0109] Among them, S1:

[0110] Put 25 parts of tailings slag into small particles in a jaw crusher, put t...

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Abstract

The invention discloses a tailings slag-doped high-strength wear-resistant concrete and a preparation method thereof. High-strength wear-resistant concrete includes, by weight, 15-25 parts of tailings slag, 11-16 parts of polyacrylamide, 3-5 parts of lime, 10-12 parts of gypsum, 30-40 parts of coarse aggregate, 20-20 parts of fine aggregate 25 parts, 7-9 parts of water reducing agent, 5-10 parts of defoamer, 10-12 parts of foaming agent, 20-40 parts of cement clinker, 0.02-0.05 parts of titanate coupling agent; when preparing concrete , adding tailings slag to prepare gel material and replace a part of cement, which can not only give full play to the hydration activity of tailings slag powder, but also reduce the cost. At the same time, autoclaving and curing can further improve the hydration activity of tailings slag powder. The concrete prepared by the invention has good compression resistance and wear resistance, further develops the effect of tailings slag doped concrete, and has extremely high practicality and production value.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to tailings slag-doped high-strength wear-resistant concrete and a preparation method thereof. Background technique [0002] With the development of the mining industry, accompanying processing waste also follows. The tailings slag produced by mining and processing piles up into mountains, occupying land resources, polluting the environment, and even spending a lot of energy, manpower, and financial resources to deal with the resulting waste. damage. Therefore, realizing the processing and reuse of tailings slag and turning waste into treasure can not only solve the loss caused by tailings slag but also bring certain economic benefits. It is inevitable to use tailings slag to prepare concrete. [0003] At present, there are not many concretes mixed with tailings slag in the existing technology, and the utilization of tailings slag has not been developed on a large scale. Tailings ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14
CPCC04B28/14C04B40/0028C04B40/024C04B20/026C04B2201/50C04B2111/2038C04B18/12C04B24/2652C04B2/02C04B14/02C04B14/06C04B2103/302C04B24/42C04B22/04C04B7/02C04B24/40C04B38/02
Inventor 闫相明周丽张鹏闫辉张辉
Owner ZHONGSHA CONSTR