Superfine modified fly ash

A fly ash, modified technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of slow hydration rate and early strength reduction

Active Publication Date: 2017-04-26
ANHUI GAODI BUILDING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, fly ash is mainly used as an admixture in cement and concrete, but due to its slow hydration rate, the early strength will be significantly reduced after being mixed into cement

Method used

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  • Superfine modified fly ash

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: the present embodiment carries out as follows:

[0011] The ultra-fine modified fly ash of the present invention is formed by mixing and grinding the original powder of fly ash and an activator, the mass ratio of the original powder of fly ash to the activator is 10000:3, and the activator contains three Ethanolamine, ethylene glycol, sodium silicate, sodium sulfite, glycerol, stearic acid, sodium hexametaphosphate, triethanolamine, ethylene glycol, sodium silicate, sodium sulfite, glycerol, hard The mass ratio of fatty acid and sodium hexametaphosphate is 6:5:2:1:1:1:0.5.

[0012] During production, first weigh 5.0kg of power plant fly ash raw powder, then add it to a drum mill with a diameter of 500mm, then add 1.5g of liquid activator to the drum mill, and grind for one hour to obtain Ultrafine modified fly ash.

[0013] After testing, weigh 135g of ultra-fine modified fly ash, 315g of cement, 1350g of standard sand, and 225ml of water, put them into ...

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Abstract

Provided is superfine modified fly ash. The superfine modified fly ash is formed by mixing and grinding fly ash raw powder and an activating agent, and the mass ratio of the fly ash raw powder to the activating agent is 10,000:3; the activating agent contains triethanolamine, ethanediol, sodium silicate, sodium sulfite, glycerin, stearic acid and sodium hexametaphosphate, and the mass ratio of triethanolamine to ethanediol to sodium silicate to sodium sulfite to glycerin to stearic acid to sodium hexametaphosphate contained in the activating agent is 6:5:2:1:1:1:0.5. The superfine modified fly ash is regular in particle, is mostly spherical, and is smooth in surface and large in specific surface area, and the activity of the superfine modified fly ash is higher than that of common fly ash.

Description

technical field [0001] The invention relates to the technical field of fly ash, in particular to an ultrafine modified fly ash. Background technique [0002] Fly ash is a kind of pozzolan-like mixed material formed after coal powder is burned at high temperature. It is a coal-burning power plant that grinds coal into pulverized coal below 100 microns, sprays preheated air into the furnace to form a suspended state, and produces high-temperature flue gas mixed with a large amount of non-combustible matter, which is collected by a dust collection device. fly ash. The chemical composition of fly ash is similar to that of clay, and the main components are silicon dioxide, aluminum oxide, ferric oxide, calcium oxide and unburned carbon. At present, fly ash is mainly used as an admixture in cement and concrete, but due to its slow hydration rate, the early strength will be significantly reduced after being mixed into cement. Contents of the invention [0003] The object of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B20/02C04B18/08
CPCC04B20/026C04B18/08Y02W30/91
Inventor 胡成朔高文忠梁本怀郑海波
Owner ANHUI GAODI BUILDING MATERIAL CO LTD
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