Izithasiselo zikakhonkolo ezingasindi | Ama-ejenti Akhipha Amagwebu Asebenza Kakhulu Wokhonkolo Weselula
Siyazi ukuthi noma iziphi izinto zikasimende ezihlanganisa usimende ne-magnesite zinesikhathi sokuqala sokumisa, ikakhulukazi usimende ojwayelekile wasePortland osetshenziswa kakhulu, isilungiselelo sokuqala isikhathi esiningi singemuva kwesikhathi 45 imizuzu. Uma ukuzinza kwegwebu kubi, usimende nezinye izinto zikasimende azikabekwa, futhi igwebu elikhiqizwe i-ejenti egwebu ukhonkolo engasindi yeselula seliqhumile, khona-ke igwebu alikwazi ukwakha ama-pores kukhonkolo. Ngenjwayelo, Isidingo esincane sokuzinza kwegwebu le-ejenti ecwebezelayo kakhonkolo yeselula ukwenza isikhathi sokuzinzisa igwebu sibe side kunesikhathi sokuqala sokusetha se-gelling material. 10-20 imizuzu. Njengoba isikhathi sokuqala sokusetha sezinto ezihlukahlukene ze-gelling asihambisani, izidingo zesikhathi sokuqiniswa kwegwebu nazo zihlukile. Ngenjwayelo, ukuze uthole amagwebu ane-gelling materials esheshayo, isikhathi sokuzinza singaba sifushane, kanye namagwebu anezinto zokugelling kancane, isikhathi sokuzinza kufanele sibe side ngangokunokwenzeka. Ngisho noma uhlobo olufanayo lwe-cementing material lunamazinga okushisa ahlukene, isikhathi sayo sokuqala sokusetha sihlukile, futhi izinguquko zinkulu impela. Ngokwesibonelo, usimende ojwayelekile wase-Portland ekuqaleni angase abekwe ngaphansi kuka 40 imizuzu ehlobo, ngenkathi ingangeni 80 imizuzu ebusika obubandayo obungaphansi kuka-5°C. Ngakho-ke, isikhathi sokuzinzisa segwebu le-ejenti yekhonkrithi engasindi yeselula ayikwazi ukuba nezinga elithile eliqondile, okufanele kunqunywe ngokwesimo. Ukuze wenze igwebu le-ejenti eligwebu likakhonkolo elingasindi weselula lilungele izimo ezihlukahlukene zokusetshenziswa, kufanele uzinze isikhathi eside ngangokunokwenzeka.
Isikhathi sokuzinza se-ejenti ekhihliza ukhonkolo engasindi weselula kufanele sihlangabezane nezidingo ezilandelayo:
(1) Uma isetshenziswa kusimende wasePortland futhi asikho isisheshisi esingeziwe, isikhathi sokuzinza kufanele sibe ngaphezu kwama-60min; kahle, ubuningi 3h;
(2) Uma isetshenziselwa usimende osheshayo njengosimende we-sulfoaluminate, high-alumina usimende, usimende we-ferro-aluminate, usimende wasePortland osebenza ngokushesha, njll., isikhathi sokuzinza kufanele sibe sikhulu kune 30 imizuzu, okungcono kakhulu kune 60 imizuzu;
(3) Lapho isetshenziswa kusimende magnesium, isikhathi sokuzinzisa igwebu kufanele sibe sikhulu kuno 40 imizuzu, okungcono kakhulu kune 80 imizuzu;
(4) Lapho isetshenziselwa izinto zikasimende ezixutshwe nenani elikhulu lezigcwalisi noma izinsalela zemfucuza esebenzayo njengomlotha wezimpukane., isikhathi sokuzinza kufanele sinwetshwe. Inani elikhulu lokugcwalisa noma i-slag kadoti esebenzayo, isikhathi sokuzinza kufanele sibe side.
Isikhathi esithile sokuzinzisa se-ejenti kakhonkolo esinegwebu esingasindi weselula kufanele sinqunywe izivivinyo ezincane, ngokusekelwe esimisweni sokuthi isikhunta asiwi ngemva kokuthulula, ama-pores awaxhunyiwe ngemva kokwakhiwa, futhi abakhubazekile ngokwedlulele.
I-Cie-China.org ingumhlinzeki oholayo wezithasiselo zikakhonkolo wegwebu ohlinzeka nge-ejenti yokugwedla ukhonkolo, superplasticizer,isithuthukisi samandla kakhonkolo wegwebu kukhonkolo ongasindi, Amabhulokhi e-CLC. Uma ufuna i-ejenti ekhihlizayo, sicela ukhululeke Xhumana nathi.