1. Txhim kho kev kub ceev-ruaj khov; 2. Txhim kho qis-kub tawg tiv thaiv tsis kam thiab cov nyhuv adsorption ntawm cov fibers ntawm asphalt; 3. Txhim kho kev qaug zog tiv thaiv Asphalt pavement raug rau qhov rov ua dua ntawm cov log thauj khoom hauv qab qhov chaw nyob sab nraud, thiab thaum cov nyhuv rov qab ua haujlwm siab dua qib theem tom qab cov naj npawb, cov kev ntxhov siab tsim tawm ntawm txoj kev pua hauv qab lub nra yuav dhau cov txheej txheem tiv thaiv ntawm lub zog txo; 4. Ua kom muaj zog, thiaj li txhim kho cov dej ruaj ntseg ntawm cov asphalt sib tov.
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