Assertion: mineral's crystal | /r/CapableOf | fill capillary pores
Facets:
value: in the concrete
type: LOCATION
value: to block pathways
type: PURPOSE
Source sentences:
text: The reaction takes place when exposed to water and un-hydrated cement particles to form insoluble needle-shaped crystals, which fill capillary pores and micro-cracks in the concrete to block pathways for water and waterborne contaminates.