Ihe eji arụ ọrụ wetara akwa rọba maka paịlị asphalt, na paịlị polyurethane maka igwe egwe ọka okporo ụzọ.
A na-ekewa ihe mkpuchi rọba maka paver asphalt ụzọ abụọ: ụdị akwa rọba agbakwunyere na nke gbawara agbawa.A na-eji rọba eke eme ihe eji eme ihe eji eme rọba na-ejikọta ya na rọba ọpụrụiche dị iche iche, nke na-eweta pad rọba anyị ọtụtụ uru dị ka ezigbo nguzogide iyi, ike mgbaji, oke okpomọkụ na-eguzogide.