a powder of alumina, silica, lime, iron oxide, and magnesium oxide burned together in a kiln and finely pulverized and used as an ingredient of mortar and concrete, peam. betooni valmistamiseks ja mörtides kasutatav pulberjas hüdrauliline sideaine, mida saadakse kaltsiumi sisaldavat mineraalset toorainet põletades ja jahvatades
