Discoloration thiab organic teeb meem muaj kuab paug ntawm pob zeb

Discoloration
Pob zeb discoloration feem ntau tshwm sim nyob rau hauv pob zeb ntau yam nrog tsis zoo tshuaj stability. Ntawm no peb tham txog cov xim tsaus ntawm lub teeb-xim pob zeb hauv cov txheej txheem dai qhuav uas nyob sab hauv tsev tsis raug ultraviolet hluav taws xob. Ib qho xwm txheej yog tias cov pob zeb tawm ntawm lub qhov tsua dawb (travertine) maj mam tig daj los ntawm sab saum toj mus rau hauv qab thaum lub sijhawm teeb tsa, thiab tag nrho cov phab ntsa hloov daj dhau sijhawm. Cov tshuaj stability ntawm travertine nws tus kheej yog pluag. Cov pa roj carbon dioxide, sulfur dioxide thiab nitrogen oxide nyob rau hauv cov huab cua yuav hnov ​​​​mob nrog calcium oxide nyob rau hauv lub travertine, tshwj xeeb tshaj yog cov generated sulfide yuav tsum yog dawb pob zeb tig daj. Ntxiv mus, thaum lub sij hawm tsim kho, cov xim thiab binder muaj ib tug loj npaum li cas ntawm volatile Cheebtsam, uas kuj yuav hnov ​​​​mob nrog pob zeb thiab muaj kev cuam tshuam rau cov pob zeb zoo li no nrog cov tshuaj tsis zoo.
Organic teeb meem muaj kuab paug
Tom qab lub pob zeb muaj kuab paug los ntawm cov organic teeb meem, cov xim ntawm cov pa phem yuav tob zuj zus thiab yuav tsis ploj mus ntev, thiab nws yuav nqus plua plav. Organic pollutants feem ntau yog los ntawm cov roj paug thiab kev sib cuag tsiaj, tshwj xeeb tshaj yog qhov chaw uas tib neeg feem ntau kov lawv txhais tes. Qhov tseeb, nws yog feem ntau nyob rau hauv qhov chaw pom tseeb tshaj plaws, qhov chaw uas cov pob zeb zoo nkauj yog qhov muag heev, thiab tseem yog qhov chaw uas tib neeg kev sib cuag yog qhov ze tshaj plaws. Piv txwv li, stair handrail feem ntau yog dai kom zoo nkauj nrog tshwj xeeb-zoo li cov qib siab marble. Qhov tsis tsim nyog tshaj plaws yog siv cov khoom siv marble dawb ua cov khoom kho kom zoo nkauj hauv cov chaw pej xeem. Qhov xwm txheej ntawm cov khoom siv no tom qab muaj kuab paug hauv ib puag ncig zoo li no tuaj yeem xav txog.
Cov organic sib koom ua ke tsis zoo kuj tseem yuav ua rau muaj kuab paug ntawm cov ntaub thaiv phab ntsa qhuav. Ntawm ib sab, nws yuav kis kab mob ntawm ntug ntawm pob zeb phaj, thiab ntawm qhov tod tes, nws yuav nqus plua plav hauv huab cua.