The Preparation and Performance Research of the Desulphurization Gypsum Plaster Material

Abstract:

The cementing material is the desulfurization gypsum. The fly ash is a admixture. A moderate amount of additive is mixed. A gypsum plaster material of micro swelling and good workability, plasticity was produced. The representative two retarders, the sodium hexametaphosphate and the citric acid, were researched. The effects of the retarders on the setting times and the mechanical properties of the desulfurization gypsum were studied. The retarding effect of the citric acid is the most prominent, but its negative impact on the flexural and compressive strength of the plaster gypsum is very large. Considering the setting time and the strength, the sodium hexametaphosphate is the best retarder of the desulfurization gypsum plaster material.

• Periodical: Applied Mechanics and Materials (Volume 327)
• Pages: 32-35
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.327.32
• Online since: June 2013
• Authors: Huan Qi Zhao, Guo Zhong Li
• Keywords: Desulfurization Gypsum, Mechanical Property, Plaster Material, Retarder, Setting Times

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