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Mineral admixture for concrete and preparation method thereof

A mineral admixture and concrete technology, applied in the field of cement-based materials, can solve the problem of low utilization rate of solid waste, achieve low electric flux, improve mechanical properties and durability, and reduce treatment costs

Pending Publication Date: 2021-07-27
CHINA WEST CONSTR ACAD OF BUILDING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, bulk industrial solid wastes are used as mineral admixtures because they contain a large amount of silica and alumina. However, except for solid wastes such as fly ash and silica fume, the utilization rate of other solid wastes is not high.

Method used

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  • Mineral admixture for concrete and preparation method thereof
  • Mineral admixture for concrete and preparation method thereof
  • Mineral admixture for concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Mineral blending with concrete, including the following components by weight component:

[0045] 220 mixing station waste slurry, 90 stickers, 35 parts of lithium residue, 20 gas segments, 80 of glass slag.

[0046] The preparation method is:

[0047] 100 parts of the stir slurry water, 40 parts of the stirring station, 35 parts of lithium residue, 20 gas segments, and crush the lithium residue and gas segments into a 1.18mm screen, add the material to the grinder And add 0.5 parts of polycarboxylic acid water water repellent to dry to D 50 <8 μM obtained the slurry I;

[0048] 120 parts of the stir slurry water, 50 parts of the stirring station, 80 cases of glass slag, the glass residue is broken to the via diameter of 1.18 mm screen, and the material is added to the grinder and add 0.3 parts of polyethylene glycol. Grinding. To D 50 <25 μm is obtained by the slurry II;

[0049] The resulting slurry I and the slurry II were mixed, and 0.5 parts of polyethylene glycol ester...

Embodiment 2

[0051]Mineral blending with concrete, including the following components by weight component:

[0052] 200 parts of the stirring station, 100 parts of the stirring station, 20 gas segments, 50 coal gangue.

[0053] The preparation method is:

[0054] 50 parts of the stir slurry water, 50 parts of the stirring station, 20 parts of gas segments, and crushed the gas segments to the perforation of 1.18 mm screen, and the material was added to the grinder and 1 part of the polycarboxylic acid. Decrease agent is ground to D 50 <8 μM obtained the slurry I;

[0055] 150 parts of the stir slurry water, 50 parts of the stirring station, 50 coal gangue, the coal gangue crushed to a 1.18 mm screen, and the material was added to the grinder and added 0.3 parts of the polycarboxylic acid water water reduction agent. Grinding to D 50 <25 μm is obtained by the slurry II;

[0056] The resulting slurry I and the slurry II were mixed, and 0.5 parts of sodium dodecyl sulfonate was added and stirred e...

Embodiment 3

[0058] A mineral blending of concrete, taking the mixing station waste slurry aperture is 1.18 mm screen, and the material is added to the grinder and 0.4 parts of polyols are ground to D. 50 <8 μM obtained the slurry I;

[0059] Take the mixing station waste slurry water perforation is 1.18 mm screen, and the material is added to the grinder and 0.2 parts of the polycarboxylic acid water water reducer to ground to D. 50 <25 μm is obtained by the slurry II;

[0060] The resulting slurry I and the slurry II were mixed, and 0.5 parts of water glass was mixed and uniform, i.e., the blend was obtained.

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Abstract

The invention discloses a mineral admixture for concrete and a preparation method thereof. The mineral admixture comprises the following components in parts by weight: 50-220 parts of mixing plant waste slurry water, 20-100 parts of mixing plant solid waste, 20-150 parts of industrial solid waste, 0.3-1.5 parts of a grinding aid and 0.3-1.5 parts of a dispersing agent. The mineral admixture prepared by the preparation method disclosed by the invention can replace part of cementing materials used in a concrete preparation process while realizing reutilization of various solid waste resources, so that the cost of concrete raw materials is reduced, and the durability of concrete is improved.

Description

Technical field [0001] The present invention belongs to the related art of cement-based material, and more particularly to a mineral blending of concrete and a preparation method thereof. Background technique [0002] Waste slurry is the wastewater produced after concrete production, transportation and construction equipment. The liquid squeezed lace body formed after the sand and the coarse sand is separated by sandstone separation equipment after cleaning of concrete production, transportation and construction equipment. According to statistics, my country has nearly 100 million tons of waste slurry in 2019. At present, the main treatment method of waste water is precipitated, homogenization, etc., the precipitation method realizes the separation of waste slurry by pressure filter, and the separated filter cake needs to be arranged, increasing waste slurry water disposal costs. The homogenization method is to consolidate the waste water in some range and use water as a concrete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B22/00C04B14/22C04B18/06C04B18/12C04B18/14C04B18/16
CPCC04B40/0039C04B22/0046C04B18/16C04B18/12C04B18/141C04B14/22C04B18/065C04B2103/408C04B2103/302C04B24/026Y02W30/91
Inventor 杨文王军马建峰高达涂玉林高育欣吴雄
Owner CHINA WEST CONSTR ACAD OF BUILDING MATERIALS CO LTD
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