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Ultrafine solid waste-based grouting material and preparation method thereof

A grouting material and ultrafine powder technology, applied in the field of building materials, can solve the problems of low calculus rate, easy to be washed away, long setting time, etc., and achieve the effects of good environmental coordination, excellent product performance, and simple preparation process

Active Publication Date: 2022-07-08
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The invention provides an ultra-fine solid waste-based grouting material and a preparation method thereof, aiming at solving the problems of difficult injection of fine cracks in the cement-based grouting material, poor stability, easy to be washed away, high water separation rate, low stone formation rate, Long setting time and difficult to adjust, slow strength growth, large shrinkage and other technical problems, in order to achieve good stability, thixotropy, injectability, adjustable setting time, mechanical properties and durability of grouting materials, and environmentally friendly Purpose

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Embodiment 1 An ultra-fine solid waste-based grouting material is made from the following raw materials by weight:

[0054] 420 parts of ultra-fine granulated blast furnace slag powder, 140 parts of ultra-fine fly ash, 140 parts of calcium-enhanced calcined gangue ultra-fine powder, 3 parts of Portland cement clinker, 27 parts of hydroxide, 108 parts of water glass, Thixotropic component 35 parts, plastic swelling component 1 part, naphthalene series superplasticizer 7 parts, barium nitrate 5 parts, water 196 parts; thixotropic component consists of the following raw materials by weight: organic polymer thixotropic agent (starch ether) 1.0%, sodium carbonate 6.0%, zinc sulfate 4.0%, and the balance is water.

[0055] The preparation method of the above-mentioned ultrafine solid waste-based grouting material comprises the following steps:

[0056] (1) Coal gangue and slaked lime (accounting for 5% of the weight of coal gangue) are mixed and ground to a specific surface ...

Embodiment 2

[0063] Embodiment 2 An ultra-fine solid waste-based grouting material is made from the following raw materials by weight:

[0064]570 parts of ultra-fine granulated blast furnace slag powder, 60 parts of calcium-increased calcined coal gangue ultra-fine powder, 2 parts of Portland cement clinker, 20 parts of hydroxide, 122 parts of water glass, 35 parts of thixotropic components, plastic 1.2 parts of swelling component, 10 parts of naphthalene series superplasticizer, 3 parts of zinc nitrate, 110 parts of water; thixotropic component is composed of the following raw materials by weight: organic polymer thixotropic agent (starch ether) 1.0%, carbonic acid Sodium 5.0%, zinc sulfate 4.0%, and the balance is water.

[0065] The preparation method of the above-mentioned ultrafine solid waste-based grouting material is basically the same as that of Example 1, except that the types and proportions of raw materials are different.

[0066] The main performance indicators of the grouti...

Embodiment 3

[0067] Embodiment 3 An ultra-fine solid waste-based grouting material is made from the following raw materials by weight:

[0068] 390 parts of ultra-fine granulated blast furnace slag powder, 300 parts of ultra-fine fly ash, 78 parts of Bayer process red mud, 106 parts of Portland cement clinker, 35 parts of desulfurization gypsum, 35 parts of thixotropic components, plastic expansion components 0.5 part, 4 parts of polycarboxylic acid-based high-performance water reducer, and 356 parts of water; the thixotropic component is composed of the following raw materials by weight: 1.0% of starch ether, 6.0% of sodium carbonate, and the balance is water.

[0069] The preparation method of the above-mentioned ultra-fine solid waste-based grouting material is basically the same as that of Example 1, except that the types and proportions of raw materials are different. Fine powder, the step (3) is: pre-divide the plastic expansion component and the fluidization component into the plast...

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Abstract

The invention discloses an ultra-fine solid waste-based grouting material and a preparation method thereof, aiming at solving the problem that the micro-cracks existing in the cement-based grouting material are difficult to inject, have poor stability, are easily washed away, have high water separation rate and low stone rate , Long coagulation time and difficult to adjust, slow strength growth, large shrinkage and other technical problems. It is mainly composed of solid waste ultrafine powder, calcined solid waste ultrafine powder, calcium-increased calcined solid waste ultrafine powder, alkali-containing substances, waste sulfate minerals, inorganic salts, thixotropic components, and plastic expansion components. , fluidized components, coagulation components and other raw materials are prepared through the steps of powder mixing and auxiliary addition. The prepared grouting material has good stability, thixotropy, injectability, adjustability of setting time, mechanical properties and durability, energy saving and environmental protection, and is suitable for road subgrade diseases, mining goaf backfilling, anti-seepage blocking Leakage, rock (coal) seam reinforcement and other treatments.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an ultrafine solid waste-based grouting material and a preparation method thereof. Background technique [0002] Affected by the traffic load and the environment, the road will inevitably suffer from subsidence, hollowing, pulping and other diseases in the subgrade and base during the service process; during the mining process, roof leakage, roof fall, siding, water inrush, and coal leftover often occur. Spontaneous combustion and other accidents; moreover, mining has formed a large number of goafs underground, which can easily cause surface collapse, cracking, settlement and other deformations, and endanger existing buildings (structures). In response to these situations, grouting technology is often used to solve the problems of roadbed diseases, goaf backfilling, broken roof leakage of working face, reinforcement of surrounding rock, water blocking and seepage preve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/02C04B111/20C04B111/27C04B111/76
CPCC04B28/02C04B2201/52C04B2201/50C04B2111/00293C04B2111/2015C04B2111/20C04B2111/76C04B2111/27C04B18/142C04B18/08C04B18/12C04B12/04C04B7/02C04B22/085C04B22/06C04B24/38C04B22/10C04B2103/302C04B22/142C04B2103/0068C04B18/0409C04B22/145Y02W30/91
Inventor 李克亮吴宏
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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