Qiimaha Qeexitaanka Batrool Coke ee Sulfur-ka Yar

Kookaha Pitch waa nooc ka mid ah kookaha dhuxusha ee heerkulka sare leh, kaas oo lagu sameeyo isticmaalka kookaha dhuxusha iyadoo la kululeynayo, la milmayo, la buufinayo lana qaboojinayo habka sameynta. Kookaha Pitch waxa loo qaybiyaa laba qaybood: kookaha dhuxusha iyo bitumen-ka batroolka. Kookaha asfaltiga ee loogu talagalay walxaha aan la qabsan karin inta badan waa kookaha dhuxusha. Kookaha cayriin ee tijaabada ah ayaa lagu daray kookaha kala dirida kookaha si loo kululeeyo oo loo milmo. Isla mar ahaantaana, gariiradda kuleylinta korontada ayaa la shidaa, kookaha dareeraha ahna waxaa laga soo saaraa afka oo hawada ayaa lagu shubaa walxo yaryar. Kookaha asfaltiga waxaa si dabiici ah loogu qaboojiyaa badeecooyin nus-dhammaystiran hawada munaaradda qaboojinta, waxaana loo diraa shaandhada baaritaanka gariirka saddex-geesoodka ah xagga hoose ee munaaradda qaboojinta si loo kala saaro badeecooyinka asfaltiga ee wareegsan ee buuxiya shuruudaha.