Assertion: calcium carbide's use | /r/AtLocation | the construction industry
Facets:
value: as a building material
type: MANNER
value: as an ingredient of cement
type: MANNER
value: as limestone aggregate for road building
type: PURPOSE
Source sentences:
text: The main use of calcium carbonate is in the construction industry, either as a building material, or limestone aggregate for road building, as an ingredient of cement, or as the starting material for the preparation of builders' lime by burning in a kiln.