Assertion: concrete's material | /r/HasProperty | mixed
Facets:
value: in specific proportions
type: OTHER
Source sentences:
text: The materials are mixed and left until the lime is completely hydrated; the mixture is then pressed into moulds and cured in an autoclave for three to fourteen hours to speed the chemical hardening.
text: Materials are mixed in specific proportions to obtain the required strength.
text: These raw materials are finely ground and mixed, then fed into a rotary cement kiln, which is the largest piece of moving industrial equipment in the world.