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A kind of high-strength, quick-setting, expansion multi-purpose grouting material and preparation and application method thereof

A grouting material, high-strength technology, applied in quick-setting, expansive multi-purpose grouting material, high-strength field, can solve the difficulty of increasing the strength in the later stage, the inability to meet the safety production grouting plugging requirements of mines, low expansion rate, etc. Problems, achieve the effect of reducing bleeding and segregation, low price, and improving expansion coefficient

Active Publication Date: 2022-07-26
PANJIANG COAL & ELECTRICITY GROUP INSITUTE OF COAL MINING DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The grouting material produced by this formula has high early strength after setting, but it is basically difficult to increase the later strength, and the expansion rate is low, which cannot meet the plugging requirements of mine safety production such as grouting and filling.

Method used

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  • A kind of high-strength, quick-setting, expansion multi-purpose grouting material and preparation and application method thereof

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Effect test

preparation example Construction

[0041] The preparation method of the modified air-entraining agent comprises the following steps:

[0042] C1: fully stir the ordinary metal powder air-entraining agent and the sodium lauryl sulfate surfactant solution according to the mass ratio of 1:1 for 1 hour to obtain a mixed material after mixing it uniformly;

[0043] C2: put the obtained mixed material into a vacuum drying oven for low-temperature drying, the drying temperature is not higher than 30 degrees Celsius, and the drying time is greater than 8 hours;

[0044] C3: Put the dried mixed material into a closed pulverizing sample making machine to fully grind and pulverize to prepare a modified air-entraining agent, and the modified air-entraining agent is 400-1000 mesh.

[0045] Preferably, the double-fast cement adopts 42.5 type, the final setting time is 10min, and the setting time of the grouting material is reduced, and the ordinary Portland cement type is 425# or 525#.

[0046] Preferably, the water-retaini...

Embodiment 1

[0054] A high-strength, quick-setting, expansive multi-purpose grouting material is configured, including the following components: double-fast cement: 60%; ordinary Portland cement: 30%; water-retaining agent: 0.1%; water-reducing agent: 0.15% ; Modified air-entraining agent: 0.15%; Composite dispersant: 0.05%; Industrial cellulose: 0.05%; Quick lime: 4.5%; Bentonite: 5%.

[0055] Preparation method and application: the above-mentioned raw materials and water are uniformly mixed in a ratio of 0.7:1 by weight, and the obtained slurry is used for grouting and plugging of gas and carbon monoxide toxic and harmful gases gushing out of cracks.

Embodiment 2

[0057] Configure a high-strength, quick-setting, expansive multi-purpose grouting material, including the following components: double-fast cement: 55%; ordinary Portland cement: 45%; water retention agent: 0.1%; water reducer: 0.15% ; Modified air-entraining agent: 0.1%; Composite dispersant: 0.05%; Industrial cellulose: 0.1%; Quick lime: 5%; Bentonite: 4.5%.

[0058] Preparation method and application: the above-mentioned raw materials and water are uniformly mixed in a weight ratio of 0.8:1, and the obtained slurry is used for efficient sealing of gas drainage holes and gas pressure measurement holes.

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Abstract

The invention discloses a high-strength, quick-setting, expansion type multi-purpose grouting material, comprising the following components: double-fast cement: 45%-60%; ordinary Portland cement: 30%-45%; water retention agent: 0.05%‑0.15%; water reducing agent: 0.10%‑0.25%; modified air entraining agent: 0.01%‑0.15%; compound dispersant: 0.05%‑0.15%; industrial cellulose: 0.05%‑0.15%; quicklime: 4%-6%; Bentonite: 3.5%-6%; Mix the grouting material with water at a ratio of water-cement ratio of 0.6-1 to prepare a slurry, which is used for consolidation of broken surrounding rock mass, gas and carbon monoxide are toxic Grouting plugging of harmful gas gushing cracks, efficient sealing of gas drainage drilling holes, gas pressure measurement drilling holes, and sealing of leaking water cracks in mines. The invention has the advantages of high strength, large expansion, good fluidity, rapid setting, compactness and low permeability, etc., and is low in price and cost saving.

Description

technical field [0001] The invention belongs to the technical field of mine safety production, and in particular relates to a high-strength, quick-setting, expansion multi-purpose grouting material and a preparation and application method thereof. Background technique [0002] Grouting is an indispensable construction method to control mine disasters in safe mining. It has been widely used in many application fields such as roadway surrounding rock reinforcement, gas control, mine water control, and goaf fire prevention. The quality of grouting in the above fields determines whether the mine can be mined safely and efficiently, and the quality of grouting materials is a key factor in determining the quality of grouting construction, and its performance is particularly important. [0003] At present, the grouting materials used by mining enterprises are mainly organic expansion materials and ordinary cement materials. At present, domestic large-scale mining enterprises have ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B111/70
CPCC04B28/04C04B2201/50C04B2111/70C04B22/16C04B24/383C04B14/104C04B22/064C04B22/04C04B24/16C04B2103/0054C04B2103/302
Inventor 罗卫东蒋中承唐勇杨乘任青山
Owner PANJIANG COAL & ELECTRICITY GROUP INSITUTE OF COAL MINING DESIGN
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