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GGBFS (Ground Granulated Blast-Furnace Slag)

Glassy granular material formed when molten blast-furnace slag is rapidly chilles as by immersion in water

 

Used as a cementitious material in Portland cement concrete

 

Primary advantages for adding GGBFS to concrete as a separate material, rather than intergrinding it in the cement

i) Each material can be ground to its own optimum fineness

ii) The proportions can be adjusted to suit the particular project needs

 

Standard: ASTM C989