Activation of Slag in Gypsumless Portland Cements

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Title: Activation of Slag in Gypsumless Portland Cements

Author(s): J. Hrazdira

Publication: Special Publication

Volume: 132

Issue:

Appears on pages(s): 1637-1650

Keywords: Compressive strength; flexural strength; grinding (comminution); mortars (material); pastes; portland cements; setting (hardening); slags; surfactants; viscosity

Date: 5/1/1992

Abstract:
Gypsumless Portland cements (GPC) are inorganic binders, which may be described aas system of: ground Portland clinker (specific surface of 400-500 m2/kg - Blaine), a surface-active agent with hydroxyl groups and a hydrolyzable alkali metal salt (carbonate, bicarbonate, silicate). New cements, developed in recent years, are able to reach both higher strengths and fracture toughness than ordinary Portland cement (1,2,3). New developments in the making of very strong cements have resulted from modifying cement compositions and manipulating the microstructures (4).