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Early activation and properties of slag cement

โœ Scribed by Xuequan Wu; Weimin Jiang; D.M. Roy

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
889 KB
Volume
20
Category
Article
ISSN
0008-8846

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โœฆ Synopsis

Early age activation of granulated blast-furnace slag (BFS) and blends of slag and portland cement (OPC) has been studied. Activators include sodium-hydroxide, sodium sulfate, alum (potassium aluminum sulfate), superplasticizer, and calcium aluminate cement. Heat of hydration, x-ray phase characterization, compressive strength, viscometry, pore size distribution and related characterization studies have been made. Activated BFS-cement mortars having equivalent strengths at 1 .day to OPC have been prepared, which also have 28-and 90-day strengths exceeding those of the OPC. Mechanisms of activation are discussed.

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