Assertion: asphalt | /r/CapableOf | start in 1960
Facets:
Source sentences:
text: Asphalt was used starting in the 1960s as a hydrophobic matrix aiming to encapsulate radioactive waste such as medium-activity salts (mainly soluble sodium nitrate and sodium sulfate) produced by the reprocessing of spent nuclear fuels or radioactive sludges from sedimentation ponds.