Bhitumini imvura yakasviba uye ine viscous zvakanyanya kana semi-yakasimba fomu yepetroleum. Inogona kuwanikwa mumasikirwo emamineral deposits. Iko kushandiswa kukuru kweasphalt (70%) kuri mukugadzirwa kwemugwagwa, sebhainda kana kunamatira kwekongiri yeasphalt. Kumwe kushandiswa kwayo kukuru kune asphalt yekudzivirira mvura zvigadzirwa, zvinosanganisira denga remvura-proofing zvinhu zvekuvharira denga rakatsetseka.

Iyo asphalt yekusanganisa yekugadzira maitiro inosanganisira kusanganisa granite aggregates uye asphalt kuti uwane musanganiswa weasphalt. Musanganiswa unoguma unoshandiswa zvakanyanya senzira yekugadzira zvinhu. Yakawanda yesimba rekuita rinoshandiswa kuomesa uye kudziyisa aggregates. Iye zvino Sinoroader Group inopa chizvarwa chitsva cheasphalt kusanganisa zvidyarwa zvinosangana nezvinodiwa zvemazuva ano zvekuenderana kwezvisikwa, kuvimbika kwekushanda, kugadzira asphalt yemhando. Hunhu mutemo ndeimwe yeakakosha mapoinzi ebhizinesi.
Sinoroader Boka rinoshandisa matekinoroji matsva uye zvimiro zvemethodical, inopindura zviri nyore kune zvinodiwa nevatengi, zvinodiwa zvinoita kuti zvikwanise kugadzira zvigadzirwa zvemhando yepamusoro uye zvinozadzisa zvizere zvinodiwa nevatengi: kutengesa zvishandiso nemutengo wakakwana, yepakutanga maspare parts uye zvinodyiwa, kuita musangano, kutumira uye. kuona kukanganisa, kuita waranti, kugadzirisa chirimwa chekugadzira uye chitima mumakore apfuura.