Assertion: concrete's material | /r/HasProperty | fly ash
Facets:
Source sentences:
text: Conspicuous materials include fly ash, a by-product of coal-fired power plants; ground granulated blast furnace slag, a byproduct of steelmaking; and silica fume, a byproduct of industrial electric arc furnaces.
text: These materials include fly ash, slag cement (sometimes called ground granulated blast furnace slag—GGBFS or slag cement), silica fume, and metakaolin.