Ngwakọta asphalt nke osisi na-agwakọta asphalt mepụtara nwere ọtụtụ njirimara dị ịrịba ama.
Nke mbụ, ngwakọta asphalt bụ ihe na-agbanwe agbanwe-plastic viscous, nke na-eme ka ọ nwee ezigbo nkwụsi ike dị elu na okpomọkụ dị ala. Nkwụsi ike a na-eme ka pavement asphalt nwee ike ịnọgide na-arụ ọrụ nke ọma n'okpuru ọnọdụ ihu igwe dị iche iche.

Nke abuo, ihe nhazi nke ngwakọta asphalt dị iche iche, a pụkwara ịhọrọ ụdị nhazi kwesịrị ekwesị dịka ihe ndị injinia chọrọ. Ụdị nhazi a na-ahụkarị gụnyere nkwusioru-oke ihe owuwu, ọkpụkpụ enweghị ihe owuwu na nhazi ọkpụkpụ. Ihe owuwu ndị a nwere njirimara nke ha. Dịka ọmụmaatụ, usoro nkwusioru-oke nwere njikọ dị elu mana nkwụsi ike dị elu na-adịghị mma; ebe skeleton-efu Ọdịdị nwere elu okpomọkụ kwụsie ike.
Na mgbakwunye, paịvement ngwakọta asphalt nwere ogo siri ike, nke na-eme ka pavment ahụ nwee ezigbo mgbochi skid n'ụbọchị mmiri ozuzo ma na-eme ka nchekwa ụgbọ ala dịkwuo mma.
N'ikpeazụ, iwu nke ngwakọta asphalt dị mma na ngwa ngwa, yana ngwa ngwa ngwa ngwa na oge nhazi dị mkpirikpi, ọ pụkwara imeghe okporo ụzọ n'oge. N'otu oge ahụ, a na-enwekwa ike gbanwee pavement asphalt ma megharịa ya na nkebi, nke dị oke ọnụ ahịa na gburugburu ebe obibi.
Ekwesiri ighota na n'agbanyeghi na ngwakọta asphalt nwere otutu uru, enwere ike inwe nsogbu di iche iche, dika ịka nká na nkwụsi ike nke okpomọkụ. Ya mere, a na-achọ nyocha na nrụzi mgbe niile n'oge a na-eji ya eme ihe iji hụ na a na-arụ ọrụ ya nke ọma.