Usuku lwePost: 27, Jun, 2022
4. I-Retarder
Ama-retaarders ahlukaniswe ama-organic retaarders kanye nabakwa-inOrganic retaarders. Iningi labadayisi bezinto eziphilayo banokunciphisa amanzi okunciphisa amanzi, ngakho-ke babizwa nangokuthi retaarders kanye nokunciphiswa kwamanzi. Njengamanje, ngokuvamile sisebenzisa ama-organic retaarders. Ama-organic retardars ikakhulukazi anciphise i-hydration ye-C3A, futhi ama-liglosulfonates nawo angabambezela i-hydration ye-C4AF. Izingoma ezahlukene ze-Lignosulfonates zingabonisa izakhiwo ezahlukahlukene futhi kwesinye isikhathi zibangela ukulungiswa kukasimende.
Izinkinga ezilandelayo kufanele zinakeke lapho zisebenzisa i-retarder ngokhonkolo wezentengiso:
A. Nakisisa ukuhambisana nohlelo lwezinto ezibonakalayo namanye ama-admixtures amakhemikhali.
B. Nakisisa ushintsho endaweni yokushisa
C. Naka inqubekela phambili yokwakha kanye nebanga lokuhamba
D. Naka izidingo zephrojekthi
E. ukunakwa kufanele kukhokhwe ukuze kuqiniswe ukulungiswa lapho
Izinkinga ezilandelayo kufanele zinakeke lapho zisebenzisa i-retarder ngokhonkolo wezentengiso:
A. Nakisisa ukuhambisana nohlelo lwezinto ezibonakalayo namanye ama-admixtures amakhemikhali.
B. Nakisisa ushintsho endaweni yokushisa
C. Naka inqubekela phambili yokwakha kanye nebanga lokuhamba
D. Naka izidingo zephrojekthi
E. ukunakwa kufanele kukhokhwe ukuze kuqiniswe ukulungiswa lapho
I-Sodium sulfate i-powder emhlophe, futhi umthamo ofanele ngu-0,5% kuya ku-2.0%; Umphumela wamandla okuqala awulungile njengalesoka-CACL2. Umphumela wamandla okuqala wekhonkolo kasimende we-slag ubaluleke kakhulu, kepha amandla alandelayo ancipha kancane. Umthamo we-sodium sulfate umenzeli wamandla okufika kusenesikhathi ezinhlakeni zokhonkolo ezifakwe kuqala ngeke zedlule i-1%; umthamo wezinhlaka zokhonkolo eziqinisiwe ezindaweni ezinomswakama ngeke zidlule ku-1.5%; Umthamo omkhulu uzolawulwa ngokuqinile.
Ukonakala; I- "Hoarfffst" endaweni ekhonkolo, ethinta ukubukeka nokuqeda. Ngaphezu kwalokho, i-sodium sulfate yokuqala i-ejenti ngeke isetshenziswe kumaphrojekthi alandelayo:
a. Izakhiwo ezithintana nensimbi enezinsimbi noma ze-aluminium nezakhiwo nezakhiwo ezinezingxenye zensimbi eziveziwe ngaphandle kwezindlela zokuvikela.
b. Kuqiniswe izinhlaka zokhonkolo zamafektri kanye nezindawo zokuhamba zikagesi zisebenzisa amandla we-DC.
c. Izakhiwo ezikhonkolo eziqukethe ama-aggregate asebenzayo.
Isikhathi sePosi: Jun-27-2022
