Mayiko ambiri okhala ndi zigawo zing'onozing'ono ndi mafakitale obwerera m'mbuyo alibe zoyatsirana zawo, ndipo phula likhoza kungotumizidwa kukakumana ndi zomwe akufuna. Pali mitundu itatu yayikulu yazinthu. Kulowetsa ndi sitima za phulu kumafuna dephalt imodzi ya phula ku doko. Njira ina ndikulowetsa m'matumbo mumimba kapena m'matumba a phula. Popeza mtengo wa mbiya za phula ndi wokwera kwambiri, ndizochulukirapo kugwiritsa ntchito ndalama.

Masamba a Pilphalt Asphalt
Chifukwa asphalt ali ndi maonedwe olimba, pamene phula likakumana ndi thumba lopindika, thumba lamkati ndi phula lamkati limalumikizidwa pamodzi, ndipo palibe njira yolekanira ndi njira zosavuta. Opanga nyumba awona mwayiwu bizinesiyo ndikupanga zida zatsopano kuti chikwama chamkati chomwe chimasangunuka ku phula la kutentha kwambiri ndikusintha magwiridwe antchito.
Asphalt asphalt
Asphalt asphal atanyamula kupita komweko, imakhala yolimba, ndipo phula liyenera kukhala madzi akagwiritsidwa ntchito. Izi zimafuna njira yosungunula phula ndi phula. Njira zazikulu zosungunuka za phula laukali ikutentha. Nthawi zambiri timafunikira kudalira mafuta osamutsa, nthunzi, ndi utsi kuti tisungunuke phula.

Thumba la phula losungunuka
Chida cha Stuphat Kusungunuka chimapangidwa makamaka chokweza chida chokweza, chida chosungunuka, chipangizo chotenthetsera, chipangizo choperekera, etc.