A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Comparative effect of additives on the mechanical properties of plasters made from flue-gas desulfurized and natural gypsums
Abstract Gypsum produced by flue-gas desulfurization (FGD gypsum) from the Mae Moh power plant, Thailand, was precleaned, characterized and used as the starting material for the preparations of β-hemihydrate (β-HH) and multiphase plasters with compositions within the three-phase composition diagram of calcined gypsum [1]. Based on performance requirements of commercial products, the plasters obtained were fabricated into gypsum board specimens using various additives as set regulators. The effect of the additives on the morphology and mechanical properties of the set plasters was studied in comparison with those from natural gypsum. With the exception of calcium sulfate dihydrate, it was found that additives caused a characteristic change in structure with a trend towards reduction of the aspect ratio of the hydrate crystals, as well as a decrease in strength. The set plasters obtained from FGD gypsum had higher strengths due to the finer crystal size of the hydrate.
Comparative effect of additives on the mechanical properties of plasters made from flue-gas desulfurized and natural gypsums
Abstract Gypsum produced by flue-gas desulfurization (FGD gypsum) from the Mae Moh power plant, Thailand, was precleaned, characterized and used as the starting material for the preparations of β-hemihydrate (β-HH) and multiphase plasters with compositions within the three-phase composition diagram of calcined gypsum [1]. Based on performance requirements of commercial products, the plasters obtained were fabricated into gypsum board specimens using various additives as set regulators. The effect of the additives on the morphology and mechanical properties of the set plasters was studied in comparison with those from natural gypsum. With the exception of calcium sulfate dihydrate, it was found that additives caused a characteristic change in structure with a trend towards reduction of the aspect ratio of the hydrate crystals, as well as a decrease in strength. The set plasters obtained from FGD gypsum had higher strengths due to the finer crystal size of the hydrate.
Comparative effect of additives on the mechanical properties of plasters made from flue-gas desulfurized and natural gypsums
Prakaypun, W. (author) / Jinawath, S. (author)
2002
Article (Journal)
English
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