Effect of High-Calcium Fly Ash on Activity Index and Hydration Process of Phosphorous Slag Powders

Cai Yu Li; Lin Yang; Jian Xin Cao; Qiu Mei Liu

doi:10.4028/www.scientific.net/MSF.873.105

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HomeMaterials Science ForumMaterials Science Forum Vol. 873Effect of High-Calcium Fly Ash on Activity Index...

Effect of High-Calcium Fly Ash on Activity Index and Hydration Process of Phosphorous Slag Powders

Abstract:

Effect of the dosage of high-calcium fly ash and fineness of phosphorous slag powders on activity index of phosphorous slag powders was explored. The hydration samples of phosphorous slag powders with high-calcium fly ash content were analyzed using XRD, DSC-TG and SEM. The results showed that activity index of phosphorous slag powders increased and then decreased with the dosage of high-calcium fly ash increasing. When the dosages of high-calcium fly ash were 15%-20%, activity indexes of phosphorous slag powders were above 1. With fineness of phosphorous slag powders increasing with ranges from 370 to 440 m²·kg^-1, activity indexes of phosphorous slag powders increased with ranges from 1.028 to 1.174. High-calcium fly ash accelerated the hydration reaction of phosphorous slag powders, and promoted the increase in the strength of phosphorous slag powders glue-sand.

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International Conference on Materials Applications and Engineering 2016

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Periodical:

Materials Science Forum (Volume 873)

Pages:

105-109

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.873.105

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Online since:

September 2016

Authors:

Cai Yu Li, Lin Yang*, Jian Xin Cao, Qiu Mei Liu

Keywords:

Activity Index, High-Calcium Fly Ash, Hydration, Phosphorous Slag Powders

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