Tsarin Tsara:Don yin simintin yashi, ana yin ƙirar ta itace ko wasu kayan ƙarfe.A cikin wannan tsari, mun tambayi injiniyoyinmu su sanya girman samfurin ya fi girma kaɗan fiye da samfurin da aka gama, kuma ana kiran bambanci da izinin shrinkage.Manufar wannan ita ce narka karfen a cikin gyaggyarawa don tabbatar da cewa narkakkar karfen ya dahu kuma ya ragu, ta yadda zai hana babu komai a aikin simintin.
Ƙaddamarwa:An kafa tushen tsakiya ta hanyar jefa yashin guduro zuwa wani gyaggyarawa don samar da simintin saman ciki.Saboda haka, tazarar da ke tsakanin jijiya da ƙura a ƙarshe ta zama simintin gyare-gyare.