About: http://webisa.webdatacommons.org/82661123

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	However, the low reactivity of these materials is a major hindrance to the development of concrete consisting of large volumes of slag and fly ash.
http://www.w3.org/ns/prov#wasQuotedFrom	northcountrynow.com