About: http://webisa.webdatacommons.org/424691963

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	Recycled materials such as fly ash, slag cement, silica fume, and recycled aggregates can be incorporated into concrete, thereby diverting materials from the landfill and reducing use of virgin materials.
http://www.w3.org/ns/prov#wasQuotedFrom	concretethinker.org