Ngoma inokwirirwawo pamateru. Zvisineyi, chibatiso chinoiswa pamucheto wepamusoro apo muunganidzwa unopinda mudhiramu. Iyo dehumidification uye kupisa maitiro, pamwe nekuwedzera uye kusanganiswa kweasphalt inopisa uye mineral powder (dzimwe nguva ine additives kana fibers), zvose zvinopedzwa mudhiramu. Iyo yakapedzwa asphalt musanganiswa inotamiswa kubva kudhiramu kuenda kune tangi yekuchengetedza kana mota yekutakura.

Iyo dhiramu chikamu chinoshandiswa mumhando mbiri dzeasphalt kusanganisa zvirimwa, asi nzira yekushandisa yakasiyana. Iyo ngoma ine ndiro yekusimudza, iyo inosimudza aggregate kana ngoma inotendeuka uye inobvumira kudonha kuburikidza nekuyerera kwemhepo inopisa. Mumiti inopindirana, ndiro yekusimudza yedhiramu iri nyore uye yakajeka; asi magadzirirwo uye kushandiswa kwezvinomera zvinoramba zvichinyanya kuoma. Ehezve, kune zvakare nzvimbo yekudzima mudhiramu, chinangwa chayo ndechekudzivirira murazvo weiyo igniter kubva pakubata zvakananga kuunganidzwa.
Nzira inonyanya kuoma yekuomesa uye kupisa musanganiswa ndeyekupisa kwakananga, izvo zvinoda kushandiswa kwemoto kutungamirira murazvo wakananga mudhiramu. Kunyange zvazvo zvikamu zvekutanga zvekuvhenekera mumhando mbiri dzeasphalt zvinosanganiswa zvirimwa zvakafanana, ukuru uye chimiro chemurazvo zvinogona kunge zvakasiyana.
Kunyangwe paine nzira dzakawanda dzekugadzira induced draft mafeni, mhando mbiri chete dzecentrifugal induced draft mafeni anowanzo shandiswa muasphalt kusanganisa zvidyarwa: radial impeller centrifugal mafeni uye kumashure impeller centrifugal mafeni. Kusarudzwa kwemhando ye impeller kunoenderana nekugadzirwa kweguruva rekuunganidza midziyo yakabatana nayo.
Iyo flue sisitimu iri pakati pedhiramu, induced draft fan, muunganidzi weguruva uye zvimwe zvine hukama zvinokanganisa mamiriro ekushanda easphalt kusanganisa chirimwa. Kureba uye chimiro chemigero inofanirwa kunyatsorongwa, uye huwandu hwemadhaidhi mumasisitimu anopindirana akawandisa kupfuura ari muhurongwa hunoramba huchienderera, kunyanya kana paine guruva rinoyangarara muchivako chikuru uye rinofanira kunyatsodzorwa.