Qhov chaw nyob ntawm cov asphalt sib tov cog yog qhov tseem ceeb heev. Qhov chaw xaiv ntawm cov asphalt sib tov yog ncaj qha rau nws lub sijhawm ua haujlwm ntev hauv tom qab theem.

Feem ntau hais lus, muaj peb feem ntau ntawm kev them nyiaj rau thaum xaiv qhov chaw tsim tsim haum rau cov asphalt sib tov cog. Thawj qhov yog tias cov neeg siv yuav tsum tau paub txog cov kev coj ntawm kev tsim kho ntawm cov khoom siv xws li asphalt ncaj qha cuam tshuam qhov zoo ntawm asphalt. Yog li ntawd, thaum xaiv qhov chaw nyob ntawm lub pob zeb uas asphalt tov cog, kev txiav txim siab kom meej yuav tsum tau muab kom ntseeg tau tias nws tau raws li qhov xav tau ntawm lub xaib. Cov chaw tsim khoom tseem yuav tsum tau paub meej tias kev faib cov asphalt raws li kev tsim qauv asphalt raws li kev tsim qauv, yog li ntawd kwv yees li ntawm asphalt sib tov tuaj yeem nyob.
Qhov thib ob yog tias cov chaw tsim khoom yuav tsum tau tswv thiab nkag siab cov khoom ua haujlwm yooj yim ntawm asphalt tov tsob nroj, thiab chaw pem teb uas yuav tsum tau ua thaum lub sijhawm asphalt tov tsob nroj.
Qhov kawg ntawm qhov uas xav tau kev saib xyuas yog ib puag ncig ib puag ncig ntawm kev siv khoom. Asphalt sib xyaw cov nroj tsuag yog kev ua cov khoom siv nrog qib siab ntawm kev siv tshuab. Yog li ntawd, cov hmoov av, suab nrov thiab lwm cov kuab paug tsim muaj zog thaum lub sijhawm ua haujlwm yuav loj dua. Yog li ntawd, thaum xaiv cov tsev kawm ntawv chaw tsim kho, cov tsev kawm, cov pab pawg nyob hauv ib puag ncig yuav tsum tau txo kom ntau li ntau tau.