Raws li cov kev tshawb fawb yav dhau los thiab kev tshawb fawb, asphalt pavement yog cuam tshuam los ntawm volatilization, absorption, oxidation, thiab photochemical tshua ntawm pavement, thiab asphalt ratio poob sharply nyob rau hauv thawj zaug laus tej yam kev mob, uas ua rau ib tug nkig thiab fragile pavement. Nrog rau kev yaig ntxiv ntawm asphalt, qhov nruab nrab hnub nyoog pavement nthuav tawm nws cov ntsiab lus. Asphalt pavement nkag mus rau hauv cov laus laus vim yog tsis tu ncua tearing thiab weathering, nyob rau hauv uas cov pob zeb raug rau me me hais nyob rau hauv pavement.

Thaum lub sij hawm aging txheej txheem, lub deformability thiab structural zog ntawm pavement txo. Thaum kawg, kev nyuaj siab ntawm txoj kev pavement tshwm sim nyob rau hauv daim ntawv ntawm kab nrib pleb, kab nrib pleb, poholes thiab rutting. Cov txheej txheem no zoo heev txo cov viscosity thiab brittleness, nce ductility thiab yooj, thiab ua rau asphalt tsis tshua muaj kev tawg thiab deterioration.
Tsis zoo li qub-fashioned seals txheej, ib daim ntawv thov ntawm asphalt regeneration test seem nkag mus rau hauv pavement los kho thiab hloov cov tar thiab asphalt poob vim oxidation nto deb tshaj li cov asphalt tiv thaiv. Nws tseem muab khi thiab tiv thaiv txoj kev taug kev los ntawm dej, hnub ci thiab tshuaj lom neeg muaj kuab lom, ua kom zoo dua qub, lub neej thiab txo qhov kev nyiam ntawm asphalt. Asphalt mixing manufacturers ceeb toom koj tias kev saib xyuas kom raug yog tus yuam sij rau kev tiv thaiv asphalt los ntawm lwm yam uas hnav thiab tsim kua muag.