Assertion: gypsum | /r/HasProperty | hardening
Facets:
Source sentences:
text: these techniques uses both the advantages of gypsum (early hardening, high early strength, enhanced workability) and Portland cement (improved durability in moist conditions), but are free of the deleterious effect of ettringite and thaumasite, which are formed when gypsum and Portland cement interact.
text: Gypsum is a common mineral also it is an air-hardening materials mainly consisting of calcium sulfate(CaSO 4 ·2H 2 O).