Lub teeb yuag mullite cib muaj cov porosity siab, uas tuaj yeem txuag tau ntau dua kub thiab yog li txo cov nqi roj.
Lub refractory mortar yog ib yam tshiab ntawm inorganic binding khoom, ua los ntawm cov hmoov uas yog zoo tib yam li lub cib ntsia, inorganic binder thiab admixture.