Preparation of FGD Gypsum-Fly Ash Plaster Material

Jiang Zhu; Guo Zhong Li; Chuan Wei Du

doi:10.4028/www.scientific.net/AMM.327.28

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 327Preparation of FGD Gypsum-Fly Ash Plaster Material

Preparation of FGD Gypsum-Fly Ash Plaster Material

Abstract:

FGD gypsum-fly ash plaster material was prepared by desulfurization gypsum plaster and fly ash as main materials, compound retarder A (composed of citric acid, sodium metaphosphate and borax), methylcellulose (MC) as super absorbent polymers (SAP) and water reducing agent of lignosulfonate. Mix proportion was determined through studying effects of the experimental factors, including fly ash mixing amount, retarders of citric acid, bone glue and compound retarder A, and SAP of MC and dextrin, on plaster material properties. Final mix proportion was followed as: FGD gypsum to fly ash mass ratio of 4.0, compound retarder of 0.2%, methylcellulose of 0.2% and lignosulfonate of 0.1%.