Hauv ntau qhov chaw sib txawv, cov kev cai rau kev tiv thaiv ib puag ncig yog nruj heev niaj hnub no. Yuav ua li cas cov chaw sib tov sib xyaw ua tau raws li kev tiv thaiv ib puag ncig? Qhov no tau dhau los ua kev txhawj xeeb rau ntau lub tuam txhab chaw nres tsheb sib xyaw. Yog tias cov tuam txhab tsim khoom xws li asphalt mixing stations tau txais txiaj ntsig zoo rau kev tiv thaiv ib puag ncig, nws yuav tsis tsuas yog txhim kho cov khoom tsim ntawm asphalt pob zeb, tab sis kuj txo qhov cuam tshuam ntawm ib puag ncig cov pa phem. Yog li ntawd, kev txhim kho kev tiv thaiv ib puag ncig tau dhau los ua ib txoj haujlwm tseem ceeb ntawm kev sib xyaw cov chaw nres tsheb.

Niaj hnub no, ntau lub tuam txhab muab qhov tseem ceeb rau kev txuag hluav taws xob thiab kev txo qis thiab kev tsim ntsuab. Rau tam sim no asphalt pob zeb ntau lawm, cov chaw sib tov tau dhau los ua qhov txuas tseem ceeb heev. Thaum lub chaw sib xyaw ua ke tsim cov khoom siv raw, ntau yam kev ua qias tuaj yeem tshwm sim. Rau cov teeb meem no, nws yuav cuam tshuam rau kev tsim khoom thiab kev tsim khoom ib txwm muaj, yog li nws yog ib qho tsim nyog yuav tsum tau kho kom zoo rau tag nrho ib puag ncig. Ntawm lawv, suab nrov, dej muaj kuab paug thiab plua plav paug yog tag nrho cov teeb meem muaj kuab paug ib puag ncig ntawm asphalt mixing stations.
Tom qab pom qhov tseem ceeb ntawm kev ua qias tuaj ib puag ncig, peb tuaj yeem hloov kho thiab txhim kho cov teeb meem tshwj xeeb. Ntawm lawv, lub suab nrov yog ib qho teeb meem nyuaj dua los daws, yog li peb yuav tsum xaiv txoj kev npaj kho kom zoo dua qub kom ua tiav qhov kev hloov pauv thiab tswj lub suab nrov hauv kev kaw qhov rooj kaw ntau dua. Qhov no yuav txo cov suab nrov uas tsim los ntawm cov cuab yeej tsim khoom. Tib lub sijhawm, kev tswj cov dej phwj tuaj thiab kev kho cov khib nyiab kuj yog cov haujlwm tseem ceeb, yog li muab kev lees paub zoo rau kev tsim kho tshiab.