Ukukhula kweshishini : Ngophuhliso oluqhubekayo lweshishini lokwakha iinqanawa kwishishini lokwakha, ukukhuselwa kwendalo, kunye nebhodi ye-calcium silicate njengento entsha yokukhusela indalo, ifumene ingqalelo ngakumbi nangakumbi. Amandla okukhula kweshishini likhulu, kwaye ibhodi ye-calcium silicate kulindeleke ukuba isetyenziswe ngokubanzi