Ijypsum iyingxenye ebalulekile ekukhiqizeni isemende, ibamba izindima eziningi ezibalulekile ezithinta ikh quality nekhono lomkhiqizo wokugcina. Le ndatshana icubungula indima ye-jypsum ekwenziweni kwesemende, icacisa izindima zayo, izinzuzo, nezinqubo ezihilelekile.
Ijypsum iyiminerali ethambile ye-sulfate ehlanganiswe ne-calcium sulfate dihydrate (CaSO₄·2H₂O). Isetshenziswa kakhulu emikhakheni ehlukahlukene, kuhlanganisa nezokwakha, ezolimo, kanye nomkhiqizi. Ekukhiqizeni i-cement, i-gypsum idlala indima ebalulekile ekulawuleni isikhathi sokubekwa nokuqinisekisa izici ezinhle ze-cement.
I-gypsem inikeza imisebenzi eminingi enqubweni yokukhiqiza isamente:
– I-gypsum ikakhulukazi if added ku-cement ukuze ilawule isikhathi sokumisa. Ngokungabikho kwe-gypsum, i-cement izobamba ngokushesha kakhulu, okwenza kube nzima ukuhamba nayo futhi kungenzeka kube nomthelela ekwakheni uqweqwe.
– Ngokwehlisa inqubo yokuhlinzeka ngamanzi kwe-cement, i-gypsum ivumela isikhathi esanele sokuhlanganisa, ukudlulisa, nokufaka i-concrete.
– Ijipsu ithuthukisa ukusebenza kwe-cement, iyenze kube lula ukuyixuba nokuyisebenzisa.
– Iphumelela ekuqedeni umumo opholile nokuhlangana, okubalulekile kwezokwakha.
– Igypsum iyasiza ekwehliseni ukufinyela ku-cement, inciphisa ingozi yokuphuka nokwehluleka kwesakhiwo.
– Kusiza ukugcina ukuzinza kwemikhakha yama-concrete.
Ukufakwa kwe-gypsem kukheshi kulula kunikeza izinzuzo eziningi:
– Ijiphu ithuthukisa ukusebenza kahle kwe-cement ngokuvimbela ukusetha okusheshayo nokunciphisa ukuphazamiseka kokuphuka kwesikhathi sokuqala.
– I-gypsem iyisithasiselo esinokonga ezindlekweni esithuthukisa ukusebenza kwe-cement ngaphandle kokwandisa kakhulu izindleko zokukhiqiza.
– I-jipsumi iyiminerali Yemvelo etholekayo kakhulu, okwenza kube ukukhetha okuphathelene nemvelo ukukhiqiza isementi.
Inqubo yokufaka i-gypsum emshinini wokuqina ibandakanya izinyathelo eziningi:
– I-Jipsamu ikhiphethwe emigodini bese iphonswa ibe yimvubelo emfishane.
– I-gypsem powder ephelile igcinwa futhi ilungile ukusetshenziswa ekukhiqizeni isimende.
– Phakathi komjikelezo wokwenziwa kwe-cement, i-gypsum ixutshwa ne-clinker (ingxenye eyinhloko ye-cement) ngesisekelo esithile.
– Isilinganiso esijwayelekile silinganisela ku-3-5% ye-gypsum ku-clinker, noma lokhu kungashintsha kuye ngezici ezifunwayo ze-cement.
– Ihlanganiswa ye-clinker ne-gypsum iphonswa ndawonye ukuze ikhiqize uphondo lwe-cement.
– Le nqubo yokugaya iqinisekisa ukuthi i-gypsum ihlukaniswe kahle kuzo zonke izingxenye zeziment, kulwelwa ukusetha okulungile nokuqinisa.
– Phakathi kwinqubo yokukhiqiza, izinyathelo zokulawula ikhwalithi ziqinisekisa ukufana nezilinganiso ezilungile ze-cement.
I-gypsem idlala indima ebalulekile ekwenzeni i-sementi, ihlaziyo isikhathi sokumisa, ukukwazi ukusebenza, kanye nokuphila. Ngokwazi imisebenzi nezinzuzo ze-gypsem, abakhiqizi bangakhiqiza i-sementi esezingeni eliphezulu ehambelana nezidingo zokwakha ezihlukahlukene. Ukuhlanganiswa kwe-gypsem ngendlela yokukhiqiza i-sementi kugcizelela ibalulekile yayo njengokuphakela okuthembekile nokusebenza, okwenza kube nempumelelo jikelele ye-sementi njengemathiriyali yokwakha.
