Bitumen Yakagadziridzwa
Bhitumini yakagadziridzwa ndiyo asphalt binder inogadzirwa nekuwedzera zvinowedzerwa (modifiers) zvakaita serabha, resin, polymer, natural bitumen, ground rabha poda kana zvimwe zvinhu kuti zviite nani musanganiswa webhitumini kana bhitumini. Nzira yekugadzira bhitumini yakapera yakagadziridzwa mumiti yakagadziriswa yekugovera kunzvimbo yekuvaka. Kubatsira kukuru kwebhitumini yakagadziridzwa ndeyekuti yakanyanya nyore kushandisa, kana ichienzaniswa nekushandiswa kwebhitumini yakajairika, kunze kwekudikanwa kwekuvandudza tembiricha yekudzora zvinodiwa, iyo yese mutsauko haisi diki. Uye zvakare, iyo asphalt yakagadziridzwa zvakare ine kuchinjika uye elasticity, inogona kuramba kuputika, kuvandudza kusagadzikana kweabrasion uye kurebesa hupenyu hwesevhisi, zvinobudirira kuderedza gare gare kugadzirisa, kuchengetedza manpower nguva uye mutengo wekugadzirisa, ikozvino yakagadziridzwa mugwagwa asphalt inonyanya kushandiswa kune airport runway, isina mvura bhiriji deki, nzvimbo yekupaka, nhandare yemitambo, inorema traffic pavement, mharadzano uye matenderedzwa emigwagwa uye zvimwe zviitiko zvakakosha pavement application.
Sinoroader
yakagadziridzwa bhitumini chirimwaisarudzo yakanaka yekugadzira bhitumini ine rubberized, inova chinhu chinoshandiswa zvakanyanya mumapurojekiti ekuvaka. Inodzorwa necomputer system, iri nyore-kushanda, yakavimbika uye chaiyo. Ichi chirimwa chekugadzira bhitumini chinoshanda mukuenderera uye kwakanyatsogadzirwa kwemutsara wakakwana wezvigadzirwa zveasphalt. Bhitumini yainogadzira ndeyekudzikama kwepamusoro-tembiricha, kusachembera, uye kusimba kwepamusoro. Nekuita kwayo kwasangana nemamiriro akasiyana ekushanda, Modified bitumen plant yakashandiswa zvakanyanya mumapurojekiti ekuvaka migwagwa mikuru.