Fly ash grouting material and preparation method thereof

A technology for grouting material and fly ash, which is applied in the field of grouting material and its preparation, can solve the problems of high energy consumption for raw material acquisition, long setting time, low solidification rate, etc. , the effect of fast hydration rate

Active Publication Date: 2018-09-21
SHANDONG CHUANGNENG MACHINERY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In the above-mentioned prior art, though phosphate and magnesium oxide are mixed with different additives simultaneously, materials with better comprehensive performance can be obtained; but the magnesium oxide raw materials used in this type of material are mostly dead-burned magnesium oxide (magnesia), which is Magnesite (MgCO 3 ) obtained by calcination at high temperature (above 1300 ° C), the energy consumption of raw materials is high, the carbon emission of processing is high, and it is not environmentally friendly, and the activity of dead-burned magnesia is low, and the reaction rate with phosphate salt is slow, so it is used in low temperatu

Method used

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  • Fly ash grouting material and preparation method thereof

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Effect test

Embodiment 1

[0065] A preparation method of fly ash grouting material, comprising the steps of:

[0066] (1) Preparation of component A: Take by weighing 50 parts of fly ash, 15 parts of ammonium dihydrogen phosphate, 10 parts of potassium dihydrogen phosphate, and 2 parts of pH regulator (component ratio is: 30 parts of disodium hydrogen phosphate , 70 parts of dipotassium hydrogen phosphate), 1 part of organosilicon defoamer, 0.04 part of basalt fiber, mix and stir evenly for later use;

[0067] (2) Preparation of component B: take 10 parts of magnesium oxide in proportion (component distribution ratio is: 60 parts of heavy light burned magnesium, 40 parts of light light burned magnesium), 2 parts of polymer emulsion (component distribution ratio is : 50 parts of polyacrylic acid, 50 parts of polyvinyl acetate, the solid content of the emulsion is 42%), 0.5 part of polycarboxylate ammonium salt dispersant (solid content is 26%), 1 part of retarder (component distribution ratio is: three ...

Embodiment 2

[0070] A preparation method of fly ash grouting material, comprising the steps of:

[0071] (1) Preparation of Component A: Weigh 100 parts of fly ash, 10 parts of ammonium dihydrogen phosphate, 5 parts of potassium dihydrogen phosphate, and 1.5 parts of pH regulator (the component distribution ratio is: 40 parts of disodium hydrogen phosphate, 60 parts of dipotassium hydrogen phosphate), 0.7 part of organosilicon defoamer, 0.03 part of basalt fiber, mix, stir well and set aside;

[0072] (2) Preparation of component B: Weigh 20 parts of magnesium oxide in proportion (the component distribution ratio is: 70 parts of heavy light burned magnesium, 30 parts of light light burned magnesium), 2 parts of polymer emulsion (the component distribution ratio is: 40 parts of polyacrylic acid, 60 parts of polyvinyl acetate, the solid content of the emulsion is 45%), 0.2 part of polycarboxylate ammonium salt dispersant (solid content is 27%), 2 parts of retarder (component distribution rat...

Embodiment 3

[0075] A preparation method of fly ash grouting material, comprising the steps of:

[0076] (1) Preparation of component A: Take 100 parts of fly ash in proportion, 5 parts of ammonium dihydrogen phosphate, 10 parts of potassium dihydrogen phosphate, and 1 part of pH regulator (the component distribution ratio is: 20 parts of disodium hydrogen phosphate, 80 parts of dipotassium hydrogen phosphate), 1 part of organosilicon defoamer, 0.04 part of basalt fiber, mixed, stirred evenly and set aside.

[0077] (2) Preparation of component B: Weigh 30 parts of magnesium oxide in proportion (component distribution ratio is: 80 parts of heavy light burnt magnesium, 20 parts of light light burnt magnesium), 3 parts of polymer emulsion (component distribution ratio is: 40 parts of polyacrylic acid, 60 parts of polyvinyl acetate, the solid content of the emulsion is 52%), 0.4 part of polycarboxylate ammonium salt dispersant (solid content is 26%), 5 parts of retarder (the component distribut...

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Abstract

The invention relates to a fly ash grouting material, and belongs to the technical field of preparation of grouting materials. The grouting material is prepared from a component A and a component B, wherein the component A comprises, by weight, 50-150 parts of fly ash, 5-20 parts of ammonium dihydrogen phosphate, 5-10 parts of potassium dihydrogen phosphate, 1-2 parts of a pH regulator, 0.5-1 partof a defoaming stabilizer and 0.02-0.04 part of chopped fibers; and the component B comprises, by weight, 10-50 parts of magnesium oxide, 2-3 parts of a polymer emulsion, 0.2-0.5 part of a waterproofdispersant, 0.5-5 parts of a retarder and 0.02-0.04 part of an ultrafine filler. The magnesium agent desulfurization fly ash is used as a main raw material, light calcined magnesia, the potassium dihydrogen phosphate and the ammonium dihydrogen phosphate are used as auxiliary gelling materials, and another one or more admixtures are blended to prepare the fly ash grouting material with the advantages of early strength, high strength, high solidifying rate, adjustable setting time, good fluidity, good durability, micro-expansion, low cost, environmental protection and energy saving.

Description

technical field [0001] The invention relates to the technical field of preparation of grouting materials, in particular to a grouting material with industrial solid waste fly ash as the main raw material and a preparation method thereof. Background technique [0002] At present, the most widely used grouting material is Portland cement mixed with admixture grouting material. However, with the rapid development of underground engineering construction in my country, the difficulty of engineering construction is increasing day by day, and the existing Portland-based cement materials are difficult to meet the increasingly stringent requirements. Strict engineering needs and quality requirements. Traditional Portland cement materials have a series of problems such as slow setting speed, low early strength, limited use conditions, and high energy consumption in material production. The development of new engineering materials is imminent. [0003] Fly ash is an industrial solid wa...

Claims

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Application Information

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IPC IPC(8): C04B28/34C04B18/08C04B111/70
CPCC04B28/34C04B2111/70C04B2201/50C04B2201/52C04B18/08C04B22/16C04B24/42C04B14/4656C04B14/304C04B24/2641C04B24/2623C04B24/24C04B22/0013C04B18/146Y02W30/91
Inventor 田冬杜东升刘洋胡伟于海洋韩斌张亮亮
Owner SHANDONG CHUANGNENG MACHINERY TECH CO LTD
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