Hais txog kev tsim khoom, kev tswj hwm yog thawj kauj ruam los xyuas cov cuab yeej siv ntau yam xws li kev tswj hwm kev nyab xeeb, thiab txhua qhov tseem ceeb heev.
Ua ntej, kev tswj hwm cov khoom siv. Yog tias cov khoom siv tsis tuaj yeem ua haujlwm, kev tsim khoom tsis tuaj yeem txuas ntxiv, uas cuam tshuam rau kev nce qib ntawm tag nrho cov haujlwm. Yog li ntawd, kev tswj hwm ntawm asphalt sib tov ua ke cog khoom yog qhov kev xav tau lubrication ua haujlwm, uas muaj cov phiaj xwm kev txij nkawm, thiab kev tswj hwm ntawm cov khoom siv ntsig txog ntawm cov khoom siv.

Ntawm lawv, qhov tseem ceeb tshaj plaws yog lub lubrication ntawm asphalt mix ciling cog khoom. Ntau lub sijhawm, vim li cas qee cov khoom lag luam ua tsis tiav tshwm sim feem ntau vim vim yog tsis muaj kev tsis muaj lubrication. Vim li no, nws yog ib qho tsim nyog los tsim cov phiaj xwm tu cov cuab yeej siv tau, tshwj xeeb yog cov haujlwm zoo ntawm lubrication ntawm qhov tseem ceeb. Qhov no yog vim tias tom qab tsis ua tiav ntawm qhov tseem ceeb, lawv cov kev hloov pauv thiab kev ua haujlwm txij nkawm feem ntau yog kev siv sijhawm thiab siv sijhawm sijhawm, cuam tshuam kev ua haujlwm.
Tom qab ntawd, raws li qhov xwm txheej tiag tiag, kev tsim cov qauv kev kho thiab tshuaj xyuas. Qhov zoo dua ntawm kev ua qhov no yog tias qee qhov ua tau Asphalt sib tov khoom tsis ua tiav tuaj yeem tshem tawm hauv cov paj. Rau qee qhov uas ib yam uas muaj kev puas tsuaj, xws li cov nyom sib xyaw, thiab lwm yam kev hloov pauv ntawm kev hnav thiab cov haujlwm ntau lawm.
Tsis tas li ntawd, txhawm rau txo qhov cuam tshuam rau lub phiaj xwm thaum lub phiaj xwm, qhov chaw ntawm lub xov tooj txawb asphalt nroj tsuag feem ntau, yog li nws yog qhov nyuaj rau kev yuav khoom ntxiv. Xav txog cov teeb meem ua tswv yim no, nws raug pom zoo kom yuav qee qhov nyiaj ntawm cov khoom siv ua ntej los pab txhawb kev hloov thaum muaj teeb meem tshwm sim. Tshwj xeeb rau cov khoom muaj zog xws li cov slurry sib xyaw, hauv lub voj voog kev tsim kho, kom tsis txhob muaj cov khoom siv sijhawm ntev, 3 pawg ntawm cov khoom siv tau yuav ua ntej raws li cov khoom seem.
Ib qho ntxiv, kev tswj hwm kev nyab xeeb ntawm tag nrho cov txheej txheem ntau lawm tsis tuaj yeem tsis quav ntsej. Txhawm rau ua txoj haujlwm zoo hauv kev tswj hwm kev nyab xeeb ntawm asphalt tov cov nroj tsuag hauv cov tshuab thiab khoom siv, sib xws tiv thaiv kev ntsuas yuav tsum tau ua ua ntej.