About: http://webisa.webdatacommons.org/297766033

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	The only reasonable explanation I can think of is that humid air feels warmer, so while the cement and other materials are drying/curing, they are evaporating water and increasing the relative humidity.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com