Asphalt, raws li qhov nyuaj siab molecular hydrocarbon, nthuav tawm cov khoom elastic-visco-yas nyob rau hauv qee qhov kub thiab thauj khoom, thiab yuav muaj hnub nyoog qis dua qhov kub thiab txias thiab ultraviolet irradiation. Yog li, lub hom phiaj tseem ceeb ntawm kev siv cov cuab yeej hloov kho asphalt ntxiv rau kev hloov kho asphalt yog txhawm rau txhim kho txoj kev ua haujlwm ntawm asphalt sib tov ntawm qhov kub thiab txias, txo qhov deformation ntawm qhov kub thiab txias, txhim kho nws cov kev tiv thaiv rau rutting, qaug zog, thiab kev laus, nrog rau kev tiv thaiv kom tsawg. -temperature cracking los yog ua rau qaug zog tiv thaiv ntawm qhov kub thiab txias, kom nws ua tau raws li qhov yuav tsum tau ntawm kev khiav tsheb thaum lub sij hawm tsim. Tsis tas li ntawd, kev siv cov cuab yeej hloov kho asphalt kuj tuaj yeem txhim kho qhov adhesion ntawm asphalt thiab ntxhia cov ntaub ntawv thiab lub peev xwm antioxidant ntawm cov ntaub ntawv. Ib qho ntawm lub luag haujlwm tseem ceeb ntawm kev hloov kho asphalt yog txhawm rau txhim kho lub peev xwm ntawm asphalt sib tov kom tiv thaiv deformation ntawm qhov kub thiab txias thiab txo qhov kub thiab txias, thaum tsis muaj kev cuam tshuam rau cov yam ntxwv ntawm asphalt lossis asphalt sib tov ntawm lwm qhov kub. Los ntawm kev tshawb fawb thiab kev siv cov polymer hloov asphalt hauv Suav teb, nws tuaj yeem pom tias txawm tias cov khoom siv polymer tuaj yeem siv los ua tus hloov kho feem ntau ua tau raws li cov hauv qab no:
(1) Zoo tiv thaiv kub deformation;
(2) Txhim khu kev tiv thaiv kom tsis tshua muaj kub tawg thiab cuam tshuam tawg;
(3) Kev hloov kho asphalt muaj qhov zoo adhesion thiab dej puas ua haujlwm rau aggregates;
(4) Muaj kev tiv thaiv rau kev laus mus ntev thiab ua haujlwm ntev;
(5) Zoo sib xws nrog asphalt puag;
(6) tuaj yeem tiv taus decomposition ntawm qhov sib tov kub ntawm asphalt sib tov;
(7) Hloov kho asphalt yog ib qho yooj yim rau txheej txheem thiab tuaj yeem ua tau ntau yam;
(8) tuaj yeem tswj hwm qhov kev ua tau zoo tshaj plaws thaum siv;
(9) Kev lag luam tsim nyog, tsis tas yuav nce nqi ntawm qhov project.
