Izici:Okuqukethwe kwekhabhoni engaguquki ephezulu, okuqukethwe komlotha ophansi, ugesi ophakeme kanye nokuhanjiswa kwe-thermal. Isibabule esiphansi, i-porosity ephansi kanye nokuqukethwe okuguquguqukayo okuphansi. Izinhlayiya ezomile, ezihlanzekile neziphakathi nendawo
Usayizi: 0.2–2mm, 1-5mm ,3–8mm, 5-15mmor ngokuvumelana nemfuneko yekhasimende.
Ukupakisha: esikhwameni esincane esingu-25kg, isikhwama esikhulu esingu-1mt, noma ngokwesidingo somthengi.