Assertion: ceramic | /r/HasProperty | roughly 1,200 to 1,400 celsius
Facets:
Source sentences:
text: After mixing the raw materials with water, the mixture is compressed with a machine applying thousands of tons of pressure and fired in a kiln at a higher temperature than ceramic (roughly 1,200 to 1,400 Celsius) until it reaches a state of non-porous vitrification and complete waterproofing.