Rheological properties of building gypsum fresh pastes

• Autorzy: Klin S.
• Języki publikacji: EN

Abstrakty

EN

The study presents results of laboratory tests of rheological properties of fresh pastes made of building gypsum at a wide range of water-gypsum ratios W/G = 0.4-1.5. The tests were carried out in a rotary-type viscosimeter RHEOTEST-2. The rheograms characterize dynamic changes in shearing stress τ of the gypsum pastes in the course of setting. By the addition of setting retarders rheostable gypsum pastes were obtained for the period of the experiments, which enabled the taking of rheograms of the shearing stress t, described by analytical functions based on Bingham's and Herschel-Bulkley's plastic bodies. There were determined relations between the yield stress τ0 as well as plastic viscosity ηpl and the W/G ratios. The results have considerable heuristic and practical values for rheology of fresh gypsum pastes.

Słowa kluczowe

EN

gypsum; gypsum plaster; rheology; plastic viscosity; yield stress

• Wydawca: Institute of Hydro-Engineering of Polish Academy of Sciences
• Czasopismo: Archives of Hydro-Engineering and Environmental Mechanics
• Rocznik: 2005
• Tom: Vol. 52, nr 3
• Strony: 265--282
• Opis fizyczny: Bibliogr. 42 poz., il.

Twórcy

autor

Klin S.

• Agricultural University of Wrocław, Institute of Environmental Engineering, Pl. Grunwaldzki 24, 50-363 Wrocław, Poland,

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