We all know about slag cement, but what is slag which is used in cement? How slag affect cement property?
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Slag is actually a by-product of the smelting process to obtain metal from raw ore. Slag cement is made by grounding blast furnace slag to proper fineness and used as a replacement of portland cement. Slag has some cementitious properties itself. Slag cement gives some extra strength, enhance resistance to chemical attack, reduce permeability, protect rebar from corrosion. And it has some disadvantages like it reduces the initial setting time of cement.
Abbas Khan Civil Engineer
SLAG; Slag cement is a hydrated cement formed when fine Granulated blast furnace slag (GBFS) is used to replace a portion of a portland cement.
SLAG: Slag is basically a by-product of an Iron Blast-furnace in the industries.
Together Portland cement and slag enhanced the strength of an adhesive, Reduce Permeability, Increased the resistance against a chemical attack, and protect rebar corrosion.
Slag is also beneficial for the environment as industrial waste is used in a creative way.