Idethi yokuthunyelwe: 7, Mar, 2022
Eminyakeni embalwa edlule, imboni yezokwakha ibe nokukhula nokuthuthuka okukhulu. Lokhu kwenze kwadingeka ukuthi kuthuthukiswe izixube nezithasiselo zesimanje. Izithasiselo nezixube zikakhonkolo yizinto zamakhemikhali ezengezwe kukhonkolo ukuze kuthuthukiswe izakhiwo zayo ezingokomzimba namakhemikhali. Lezi zingxenye zimelela uhlu olubanzi lwemikhiqizo enezici ezihlukahlukene zamakhemikhali.
Umehluko omkhulu phakathi kwezixube nezithasiselo yizigaba lapho izinto zengezwa kukhonkolo noma usimende. Izithasiselo zengezwa enqubweni yokukhiqiza usimende, kuyilapho ukungezwa kwezixube kwenziwa lapho kwenziwa izingxube zekhonkrithi.
Ziyini Izithasiselo?
Izithasiselo zengezwa kusimende ngesikhathi sokukhiqiza ukuze kuthuthukiswe izakhiwo zayo. Ngokuvamile, izinto zokusetshenziswa ezihilelekile ekwenziweni kukasimende zifaka i-alumina, i-lime, i-iron oxide, ne-silica. Ngemuva kokuxuba, izinto ezisetshenziswayo zishiselwa cishe ku-1500 ℃ ukuvumela usimende ukufeza izakhiwo zawo zamakhemikhali zokugcina.
Iyini I-Admixtures?
Izixube zikakhonkolo zingaba izinhlobo ezimbili, izinhlanganisela eziphilayo nezingaphili. Izixube ezisebenza ngezinto eziningi yilezo eziguqula izakhiwo ezingaphezu kweyodwa ezibonakalayo noma zamakhemikhali zengxube kakhonkolo. Kunezinhlobonhlobo eziningi zezingxube ezitholakalayo zokushintsha izici ezihlukahlukene zokukhonkolo. Izingxube zingahlukaniswa zibe:
Izixube Zokunciphisa Amanzi
Lawa ama-compounds asebenza njengama-plasticizers, anciphisa okuqukethwe kwamanzi okuxubene nokhonkolo kuze kufike ku-5% ngaphandle kokushintsha ukuvumelana kwawo. Izingxube zokunciphisa amanzi ngokuvamile ziphuma ku-polycyclic noma ama-phosphates. Uma zengezwa, lezi zingxube zandisa amandla acindezelayo wengxube kakhonkolo ngokwenza kube ipulasitiki eyengeziwe. Lolu hlobo lwe-admixture luvame ukusetshenziswa ngokhonkolo waphansi nomgwaqo.
High Range Water Reducers
Lawa ama-superplasticizers, ikakhulukazi izingxube zikakhonkolo we-polymer ezinciphisa okuqukethwe kwamanzi cishe ngo-40%. Ngalezi zinhlanganisela, i-porosity yengxube iyancipha, ngakho-ke ithuthukisa amandla ayo nokuqina. Lezi zixube ngokuvamile zisetshenziselwa ukuzihlanganisela kanye nokufuthwa ukhonkolo.
Ukusheshisa Okuxubile
Ukhonkolo ngokuvamile kuthatha isikhathi ukushintsha kusuka kupulasitiki kuya esimweni esiqinile. Ama-polyethylene glycols, ama-chloride, ama-nitrate, nama-fluoride ensimbi ngokuvamile asetshenziselwa ukwenza lezi zinhlobo zezingxube. Lezi zinto zingangezwa ekuxubeni kukakhonkolo ukuze kufinyezwe isikhathi esisithathayo ukuhlanganisa nokusetha.
I-Air-Entraining Admixtures
Lezi zingxube zisetshenziselwa ukwenza izingxube zikakhonkolo ezifakwe emoyeni. Anika amandla ukufakwa kwamabhamuza omoya kungxube kakhonkolo yingakho athuthukisa izakhiwo ezifana nokuqina namandla ngokushintsha ukuncibilika kweqhwa kukasimende.
I-Admixtures ehlehliswayo
Ngokungafani nokusheshisa izingxube ezifinyeza ukuhlangana nokusetha, ukuhlehlisa okuhlanganisiwe kwandisa isikhathi esithathwa ukhonkolo ukuze usethe. Izixube ezinjalo azishintshi isilinganiso sikasimende wamanzi kodwa zisebenzisa ama-oxide ensimbi noshukela ukuze zivimbele ngokomzimba inqubo yokubopha.
Izithasiselo zikakhonkolo nezixube njengamanje ziyisigaba somkhiqizo osebenza kahle kakhulu wamakhemikhali okwakha. Kwa-Jufu Chemtech, sisebenzisana nezinkampani ezixubile zasekhaya nezamazwe ngamazwe ukuze siqinisekise ukuthi amakhasimende ethu athola imikhiqizo engcono kakhulu yemisebenzi yawo yokwakha. Vakashela iwebhusayithi yethu ukuze ubuke futhi uthenge izithasiselo zikakhonkolo ezisebenza kahle kakhulu nezithenjwayo nezixube zikakhonkolo emhlabeni jikelele.(https://www.jufuchemtech.com/)
Isikhathi sokuthumela: Mar-07-2022
