Cement hauv ob sab phlu yog suav tias yog ib tug classic khub rau ductile hlau kav. Nws siv silicate cement, aluminate cement, thiab lwm yam ntaub ntawv zoo sib xws raws li cov ntaub ntawv tseem ceeb, tsim cov txheej txheem ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom siv cov khoom siv silicate cement, aluminate cement, thiab lwm yam ntaub ntawv zoo sib xws raws li cov khoom siv raw khoom tseem ceeb. Nws cov txiaj ntsig tseem ceeb yog nyob rau hauv nws tus nqi siab -kev ua tau zoo, paub tab technology, thiab daim ntawv thov dav.
Cov cement hauv ob sab phlu yog tsim nyog rau kev thauj cov dej nruab nrab lossis me ntsis alkaline, xws li dej haus, dej tsis qab, thiab dej irrigation. Nyob rau hauv ib puag ncig dej ib txwm muaj pH ntawm 7 thiab 8, cov cement hauv ob sab phlu qhia tau zoo heev, inhibiting kev loj hlob ntawm cov kab mob hauv dej thiab tiv thaiv kev tsim cov nplai ntawm cov yeeb nkab phab ntsa. Rau cov pa dej hauv nroog thiab cov dej ntws los ntawm cov dej nag, cov cement hauv ob sab phlu yog qhov kev xaiv zoo tshaj plaws thiab siv tau. Yog tias qhov ntsuas kub ntawm qhov nruab nrab thauj mus los yog nyob nruab nrab ntawm 50-70 degree, lossis yog tias nws muaj cov khoom siv corrosive, siab -alumina cement hauv ob sab phlu tuaj yeem xaiv, vim nws muaj qhov kub thiab txias tsis kam thiab acid corrosion kuj.
Epoxy resin hauv ob sab phlu sawv cev rau cov kev taw qhia ntawm "siab-kev tiv thaiv kev ua tau zoo." Nws suav nrog cov txheej txheem dej ntxiv -raws li epoxy resin txheej nrog lub thickness ntawm Ntau dua lossis sib npaug ntawm 200μm rau hauv cov cement hauv ob sab phlu, tsim ib qho kev tiv thaiv dual ntawm "cement + epoxy resin." Cov ntaub ntawv no muaj qhov tshwj xeeb adhesion, tiv thaiv acid thiab alkali corrosion, thiab hnav thiab cuam tshuam tsis kam. Nws qhov smoothness yog 30% siab dua li cov cement hauv ob sab phlu, txo cov dej tsis kam thiab siv zog thaum thauj dej.
Qhov tseem ceeb tshaj, txawm tias cov txheej txheem epoxy yog ib feem puas, cov hauv qab cov cement hauv ob sab phlu tuaj yeem cuam tshuam kev xeb los ntawm ib puag ncig alkaline, ua tiav ob qho "active + passive" corrosion tiv thaiv. Rau cov dej haus ncaj qha, kev thauj mus los ntawm cov dej khib nyiab zoo heev, thaj chaw qhuav qhuav (antistatic, hnav- tiv taus), lossis ntev - deb siab - cov dej thauj cov dej, epoxy resin hauv ob sab phlu muaj kev ruaj ntseg ntau dua lub neej- kev tiv thaiv kab mob.
Kev xaiv cov kab hluav taws xob yuav tsum tau ua tiav raws li qhov xav tau ntawm qhov project. Rau cov haujlwm uas muaj peev nyiaj tsawg thiab thauj cov dej nyoos los yog dej nag, cov cement hauv ob sab phlu yog txaus thiab muab cov nqi kho mob qis dua. Txawm li cas los xij, yog tias qhov project muaj cov qauv dej zoo, thauj cov xov xwm corrosive heev, lossis ua haujlwm nyob rau hauv siab - ntsev, siab - ib puag ncig puas ntsoog, epoxy resin linings muab cov txiaj ntsig ntev tshaj - cov txiaj ntsig thiab tag nrho cov nqi- ua tau zoo.
