Impembelelo yesikhululo sokuxuba i-asphalt ayinakujongelwa phantsi. Kwakhona kunempembelelo enkulu ekusebenzeni kokufudumeza kombhobho wokuhambisa i-asphalt. Oku kungenxa yokuba izibonakaliso zokusebenza ezibalulekileyo ze-asphalt, ezifana ne-viscosity kunye nomxholo wesulfure, zihambelana ngokusondeleyo nesikhululo sokuxuba i-asphalt. Ngokuqhelekileyo, i-viscosity enkulu, i-atomization iyingozi kakhulu, echaphazela ngokuthe ngqo ukusebenza kakuhle kunye nokusetyenziswa kwepetroli. Njengoko iqondo lokushisa lisanda, i-viscosity yeoli enzima iyancipha ngokuthe ngcembe, ngoko ke ioli ye-viscosity ephezulu kufuneka ifudunyezwe ukuze ihambe kakuhle kunye ne-atomization.

Ke ngoko, ukongeza ekuqondeni izikhombisi zayo zesiqhelo xa ukhetha, kufuneka ulawule ijika le-viscosity-ubushushu ukuqinisekisa ukuba ukufudumeza kunokwenza i-asphalt ifikelele kwi-viscosity efunwa ngumtshisi ngaphambi kwe-atomization. Xa kuhlolwa inkqubo yokujikeleza kwe-asphalt, kwafunyaniswa ukuba i-asphalt kumbhobho iqinisiwe ngenxa yokuba ubushushu bombhobho wokuthutha i-asphalt awuzange uhlangabezane neemfuno.
Ukuhlalutya izizathu, izizathu eziphambili zezi zilandelayo:
1. Itanki ye-oyile yezinga eliphezulu le-oyile yokudlulisa ukushisa iphantsi kakhulu, okubangela ukungahambi kakuhle kweoli yokudlulisa ukushisa;
2. Umbhobho wangaphakathi we-tube-layer eccentric;
3. Umbhobho we-oyile yokudluliselwa kobushushu mde kakhulu;
4. Umbhobho we-oyile yokuhambisa ubushushu awugcinwanga kakuhle. Amanyathelo okufakela afanelekileyo, njl., ezi zizinto eziphambili ezichaphazela umphumo wokufudumala.