Dab tsi yog cov khoom siv kav ntev tshaj plaws?
Thaum nws los txog rau cov kav dej thiab cov kav dej, cov kav dej thiab kav ntev yog qhov tseem ceeb uas yuav tsum xav txog. Kev xaiv cov khoom siv yeeb nkab zoo tuaj yeem txuag tau cov tswv tsev thiab cov lag luam los ntawm kev kho thiab hloov khoom kim heev yav tom ntej. Nrog rau ntau yam kev xaiv muaj, nws yog ib qho tseem ceeb kom nkag siab txog cov ntaub ntawv twg tau ua pov thawj tias yuav siv sij hawm ntev tshaj plaws. Hauv tsab xov xwm no, peb yuav tshawb txog peb yam khoom siv yeeb nkab thiab teb cov lus nug: Dab tsi yog cov khoom siv yeeb nkab ntev tshaj plaws?
Puas yog tooj liab yog cov khoom siv kav ntev thiab kav ntev?
Tooj liab yog ib qho kev xaiv nrov rau cov kav dej kav dej rau ntau pua xyoo. Nws paub txog nws qhov kev tiv thaiv corrosion thiab muaj peev xwm tiv taus qhov kub thiab txias. Txawm li cas los xij, nws puas yog qhov kev xaiv ntev tshaj plaws?
Txhawm rau teb cov lus nug no, nws yog ib qho tseem ceeb uas yuav tsum xav txog tias cov kav dej tooj liab tau tiv thaiv qhov kev sim ntawm lub sijhawm. Qee cov kav dej tooj liab tau teeb tsa ntau pua xyoo dhau los tseem ua haujlwm niaj hnub no. Txawm hais tias nws cov nqi pib siab, cov kav dej tooj liab muaj qhov zoo ntawm kev ua haujlwm ruaj khov, tiv taus corrosion, thiab tuaj yeem kav ntev tshaj 50 xyoo yog tias ntsia thiab tswj kom zoo.
Puas yog PVC kav ntev npaum li cov kav hlau?
Polyvinyl chloride (PVC) cov kav dej tau txais txiaj ntsig vim lawv pheej yig, yooj yim ntawm kev teeb tsa, thiab tsis kam rau tshuaj. Tab sis lawv puas tuaj yeem phim qhov ntev ntawm cov kav dej tooj liab?
Cov kav dej PVC tsis tshua muaj corrosion thiab tsis raug kev txom nyem los ntawm nplai lossis pitting zoo li cov kav hlau. Thaum txhim kho kom zoo, cov kav dej PVC tuaj yeem siv tau rau ntau xyoo lawm. Txawm li cas los xij, raug rau qhov kub thiab txias, ultraviolet (UV) lub teeb, thiab qee yam tshuaj tuaj yeem ua rau cov kav dej PVC tsis muaj zog rau lub sijhawm, ua rau lawv lub neej luv. Qhov nruab nrab, cov kav dej PVC tuaj yeem nyob nruab nrab ntawm 25-40 xyoo.
Puas yog cov kav dej galvanized sawv qhov kev sim ntawm lub sijhawm?
Galvanized steel kav, uas muaj cov hlau coated nrog ib txheej ntawm zinc, tau siv dav hauv yav dhau los tab sis tau dhau los ua tsis tshua muaj nyob hauv cov kav dej niaj hnub. Txawm li cas los xij, lawv tseem muaj nyob hauv qee lub tsev laus. Ntev npaum li cas galvanized steel kav?
Thaum cov kav dej galvanized steel paub txog lawv lub zog, lawv muaj feem cuam tshuam rau lub sijhawm. Cov zinc txheej maj mam erodes, ua rau xeb thiab txo qis peev xwm. Galvanized steel kav feem ntau kav ib ncig ntawm 20-50 xyoo, nyob ntawm ntau yam ib puag ncig.
Xaus:
Tom qab txiav txim siab txog kev ua haujlwm ntev thiab kev ua neej ntawm peb cov khoom siv yeeb nkab, nws yog qhov tseeb tias cov kav dej tooj liab muaj lub koob npe nrov rau qhov kev xaiv ntev tshaj plaws. Nrog rau kev txhim kho thiab kev saib xyuas kom zoo, cov kav dej tooj liab tuaj yeem kav ntev dua 50 xyoo, ua haujlwm zoo dua PVC thiab galvanized steel kav. Thaum cov kav dej PVC pheej yig thiab siv tau ntev, lawv lub neej feem ntau luv dua, txij li 25-40 xyoo. Ntawm qhov tod tes, galvanized steel kav, txawm tias khov kho, muaj kev cuam tshuam ntau dua rau corrosion thiab muaj qhov nruab nrab lifespan ntawm 20-50 xyoo. Txawm hais tias txhua yam khoom muaj nws qhov zoo thiab kev xav, tooj liab tseem yog qhov kev xaiv zoo tshaj plaws rau cov neeg nrhiav cov khoom siv kav ntev tshaj plaws.
