Kwinkqubo yesityalo sokuxuba i-asphalt, ukufudumeza kungenye yezixhumanisi eziyimfuneko, ngoko ke inkqubo yokufudumala kufuneka imiselwe kwisikhululo sokuxuba i-asphalt. Le nkqubo iya kusilela phantsi kweempembelelo zezinto ezahlukeneyo, oku kuthetha ukuba inkqubo yokufudumala kufuneka iguqulwe.

Sifumene ukuba xa isityalo sokuxuba i-asphalt sisebenza phantsi kobushushu obuphantsi, ipompo yokujikeleza kwe-asphalt kunye nepompo yokutshiza ayikwazi ukusebenza, ibangela ukuba i-asphalt kwisikali se-asphalt iqiniswe, okubangela ukuba isikhululo sokuxuba i-asphalt singakwazi ukuvelisa ngokuqhelekileyo. Emva kokuhlolwa, kwaqinisekiswa ukuba ubushushu bombhobho ohambisa i-asphalt abuzange bufezekise iimfuno, nto leyo eyabangela ukuba i-asphalt kumbhobho iqine.
Zine izizathu ezinokwenzeka zezizathu ezithile. Enye kukuba itanki ye-oyile yezinga eliphezulu le-oyile yokudlulisa ukushisa iphantsi kakhulu, okubangela ukungahambi kakuhle kweoli yokudlulisa ukushisa; enye into yokuba umaleko wangaphakathi wombhobho we-double-layer yi-eccentric; enye kukuba umbhobho we-oyile ogqithiselwa ubushushu mde kakhulu; okanye umbhobho we-oyile wokufudumeza ubushushu awuthathanga amanyathelo asebenzayo okugquma, njl., echaphazela umphumo wokufudumeza.
Ngokusekelwe kuhlalutyo olungentla kunye nezigqibo, kuyimfuneko ukuguqula inkqubo yokufudumeza ioli yokufudumeza ubushushu besikhululo sokuxuba i-asphalt. Amanyathelo athile abandakanya ukuphakamisa indawo yetanki yokuzalisa ioli; ukufaka ivalve yokukhupha; ukucheba umbhobho wokuhambisa; Ukongeza impompo ye-booster kunye ne-insulation layer. Emva kokuphuculwa, ubushushu besityalo sokuxuba i-asphalt sifikelele kwiimfuno kwaye zonke izinto zisebenza ngokuqhelekileyo.