Cov neeg them ntau thiab ntau mloog rau kev tsim kho hauv nroog, thiab siv cov asphalt yog nce. Daim ntawv thov tus nqi ntawm asphalt sib tov chaw nres tsheb yog ib txwm loj hlob sai.

Asphalt sib xyaw ua ke yuav ntsib qee qhov kev ua yuam kev ntau dua lossis tsawg dua thaum siv. Cov feem ntau cov uas tsis sib xws hnav ntawm cov log txhawb nqa thiab cov log tsheb ciav hlau. Qee zaum yuav muaj qee lub suab tsis zoo thiab ua tau. Qhov laj thawj tseem ceeb rau qhov no yog tias tom qab lub chaw nres tsheb asphalt sib tov rau lub sijhawm, thiab tom qab ntawd kev sib txhuam yuav tshwm sim ntawm cov log txhawb nqa thiab lub log tsheb ciav hlau.
Cov xwm txheej tshee hnyo no tseem yuav nrog cov kev sib tsoo loj, vim hais tias Asphalt sib xyaw ua rau muaj kev sib tw ntawm cov khoom siv kom qhuav, lossis txoj haujlwm sib nrig ntawm ob yuav yog kev sib tw. Thaum ntsib cov xwm txheej no, tus neeg siv yuav tsum tau ntxiv roj rau saum npoo sib chwv ntawm lub log txhawb nqa thiab lub log tom qab ua haujlwm txhua hnub.
Ib qho ntxiv, cov neeg ua haujlwm kuj yuav tsum tau them sai sai rau kev nrawm nrawm, thiab tom qab ntawd cov ntsiab lus Ashing Mixed, thiab tom qab ntawd cov ntsiab lus Asphalt, thiab cov ntsiab lus Asphaltly tau txais kev ntxhov siab heev, thiab yuav tsis tshee hnyo.