You know what it looks like… but what is it called?
TAKE THE QUIZ“blast-furnace slag”
We have one entry that includes the term blast-furnace slag.
portland blast-furnace slag cement
noun: a cement produced by intimately intergrinding a mixture of portland cement clinker and granulated blast-furnace slag in widely varying proportions
Love words? Need even more definitions?
Merriam-Webster unabridged