About: http://webisa.webdatacommons.org/112412326

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Concrete is fabricated by placing aggregate consisting of gravel, sand, or rock fragments or other mineral material in a very chemically active environment.
http://www.w3.org/ns/prov#wasQuotedFrom	dot.gov