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A mine-used fast-setting high-strength reinforcement material and its preparation method and use method

A reinforced material and high-strength technology, applied in the field of mining materials, can solve the problems of low strength and slow solidification, and achieve the effects of low alkali content, improved early strength, and accelerated hydration reaction rate

Active Publication Date: 2022-04-19
渭南陕煤启辰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a fast-setting high-strength two-component reinforcement material for mining and its preparation method and use method to solve the problems of low strength and slow solidification of the same type of materials currently on the market

Method used

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  • A mine-used fast-setting high-strength reinforcement material and its preparation method and use method
  • A mine-used fast-setting high-strength reinforcement material and its preparation method and use method
  • A mine-used fast-setting high-strength reinforcement material and its preparation method and use method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Add 40 parts of sodium propylene sulfonate, 15 parts of polyoxyethylene methacrylate, 20 parts of methacrylic acid, 15 parts of polyethylene glycol methacrylate, and 10 parts of water into the reaction kettle, and heat at 60°C After stirring evenly, add 3 parts of potassium persulfate and 2 parts of dodecyl mercaptan dropwise into the reaction kettle, raise the temperature to 80°C and keep it for 5 hours, add 2 parts of sodium hydroxide to adjust the pH of the product to neutral, and add triisopropanol 3 parts of amine, 3 parts of sodium thiocyanate, and 14 parts of calcium metaaluminate were stirred evenly to obtain a composite additive.

[0040] Then, the above-mentioned product composite additives are used to prepare fast-setting high-strength two-component reinforcement materials for mines:

[0041] Weigh 60 parts of sulfoaluminate cement, 5 parts of metakaolin, 5 parts of fly ash, 2 parts of magnesium aluminum silicate, 1 part of naphthalene-based water reducer, an...

Embodiment 2

[0045] Add 37 parts of sodium propylene sulfonate, 13 parts of polyoxyethylene methacrylate, 28 parts of methacrylic acid, 21 parts of polyethylene glycol methacrylate, and 8 parts of water into the reaction kettle, and heat at 60°C After stirring evenly, add 3 parts of sodium persulfate and 2 parts of dodecyl mercaptan dropwise to the reaction kettle, raise the temperature to 80°C and keep it for 5 hours, add 2 parts of sodium hydroxide to adjust the pH of the product to neutral, and add triisopropanol 2 parts of amine, 4 parts of thiocyanic acid and 11 parts of calcium metaaluminate were mixed evenly to obtain a composite additive.

[0046] Then, the above-mentioned product composite additives are used to prepare fast-setting high-strength two-component reinforcement materials for mines:

[0047] Weigh 62 parts of sulfoaluminate cement, 2 parts of metakaolin, 6 parts of fly ash, 3 parts of magnesium aluminum silicate, 1 part of polyvinyl alcohol, 3 parts of naphthalene-based...

Embodiment 3

[0051] Add 50 parts of sodium propylene sulfonate, 20 parts of polyoxyethylene methacrylate, 10 parts of methacrylic acid, 10 parts of polyethylene glycol methacrylate, and 20 parts of water into the reaction kettle, and heat at 60°C After stirring evenly, add 2 parts of sodium persulfate, 3 parts of ammonium persulfate, 3 parts of octadecyl mercaptan and 2 parts of sodium bisulfite to the reaction kettle dropwise, heat up to 80°C and keep it for 5 hours, add 1 part of sodium hydroxide to adjust When the pH of the product is neutral, add 5 parts of triisopropanolamine, 1 part of sodium thiocyanate, and 5 parts of calcium metaaluminate, and stir evenly to obtain a composite additive.

[0052] Then, the above-mentioned product composite additives are used to prepare fast-setting high-strength two-component reinforcement materials for mines:

[0053] Weigh 55 parts of sulfoaluminate cement, 4 parts of metakaolin, 2 parts of fly ash, 2 parts of polyacrylamide, 3 parts of polyvinyl a...

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Abstract

The invention provides a quick-setting high-strength two-component reinforcement material for mines, a preparation method and a use method, which include material A and material B; in parts by mass, the components in material A include: sulphoaluminate cement 55 ~75 parts, 2-15 parts of metakaolin, 2-10 parts of fly ash, 1-5 parts of suspending agent, 1-5 parts of naphthalene-based water reducer, 1-5 parts of retarder; by mass parts, The components in material B include: 40-60 parts of ordinary Portland cement, 5-25 parts of gypsum powder, 2-10 parts of nano-silicon dioxide, 2-8 parts of calcium oxide, and 1-10 parts of composite additives. The reinforcement material of the present invention utilizes solid waste fly ash to reduce costs, and reacts with the hydration product calcium hydroxide in cement by mixing metakaolin and nano-silicon dioxide to speed up the hydration reaction rate of cement and produce a large amount of C ‑S‑H gel, while filling the structural voids in the gel, makes the material structure more compact and increases the compressive strength of the material.

Description

technical field [0001] The invention relates to the technical field of mining materials, in particular to a fast-setting high-strength two-component reinforcement material for underground coal mine application, a preparation method and a use method. Background technique [0002] Coal is the main energy source in our country. With the mining of coal mines, the accidents of roof caving in mines are increasing, which seriously affects the mining of coal. Therefore, it is particularly important to reinforce the coal rock mass during the coal mining process. Mine-used reinforcement materials can consolidate broken coal and rock mass into a complete whole, so it is not only used for coal mining, tunneling face roof fall, and slab treatment, but also for abnormal areas such as faults, collapsed columns, and structural belts in the working face. There are also great applications, effectively increasing the efficiency of coal mining. [0003] There are two types of traditional rein...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14
CPCC04B28/14C04B2201/50C04B2201/05C04B2111/00724C04B7/32C04B14/106C04B14/04C04B18/08C04B24/06C04B2103/302C04B7/02C04B14/062C04B22/064C04B24/16C04B24/283C04B24/04C04B22/14C04B22/062C04B24/122C04B22/08C04B24/2623C04B24/123C04B24/2652
Inventor 赵腾飞梁前胡国和耿耀强李贤良李建军
Owner 渭南陕煤启辰科技有限公司
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