Title:
Activation of Slag in Gypsumless Portland Cements
Author(s):
J. Hrazdira
Publication:
Symposium Paper
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
DOI:
10.14359/17147
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).