Influence of Mechanically-Treatment on Physical-Chemical Properties of Circulation Fluidized Bed Combustion Fly Ash

De Yu Chen; Yun Yan; Yuan Zheng Liu; Meng Huang

doi:10.4028/www.scientific.net/KEM.509.181

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Influence of Mechanically-Treatment on Physical-Chemical Properties of Circulation Fluidized Bed Combustion Fly Ash
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 509Influence of Mechanically-Treatment on...

Influence of Mechanically-Treatment on Physical-Chemical Properties of Circulation Fluidized Bed Combustion Fly Ash

Abstract:

The comprehensive performance, such as water demand, hydration heat, expansion, and self-hardening of circulation fluidized bed combustion (CFBC) fly ash ground by the laboratory mill were studied in this paper. Results show that the percentage of fine particles and fluidity of CFBC fly ash increased with grinding time. However, the water demand at normal consistency of the CFBC ash decreased with grinding time. The hydration exothermic rate of the paste has been accelerated and the time of reaching the volume stability has been shortened. Meanwhile, the compressive strength of the paste and the content of ettringite in the matrix increased with the curing time in the early age, but reversed later.

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Periodical:

Key Engineering Materials (Volume 509)

Pages:

181-188

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.509.181

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Online since:

April 2012

Authors:

De Yu Chen, Yun Yan, Yuan Zheng Liu, Meng Huang

Keywords:

Circulation Fluidized Bed Combustion Fly Ashes, Fineness, Linear Expansion

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