Kukho iimveliso ezininzi zezityalo zokuxuba i-asphalt ngokwemiqathango yabavelisi kunye neenkcukacha. Xa sikhetha isityalo sokuxuba i-asphalt, kufuneka sivumelane neemeko zendawo kwaye sikhethe iimveliso ngokuthelekisa ixabiso elikhethiweyo ngokusekelwe kwiimfuno zesayizi yesayithi kunye nesikali sokuvelisa. Awungekhe ulandele umgangatho, kwaye awukwazi ukulandela nje ixabiso eliphantsi. Ezi zinto zilandelayo kufuneka ziqwalaselwe xa ukhetha isityalo sokuxuba i-asphalt.

Ukukhethwa kwesityalo sokuxuba i-asphalt ikakhulu kusekelwe ekuthembekeni kunye nokuguquguquka kwezixhobo. Kwakhona kufuna ukuchaneka komlinganiselo ophezulu, umgangatho wokuxuba okulungileyo, ukusebenza kakuhle kwemveliso, ukusetyenziswa kwamandla aphantsi, njl.

Umthamo wemveliso yesityalo se-asphalt ugwetywa ngokobungakanani bomlinganiselo wemveliso.

Ngokuxhomekeke kubukhulu bendawo yokwakha, isakhiwo sesityalo sokuxuba i-asphalt okanye isityalo sokuxuba i-asphalt sinokukhethwa. Xa ukhetha isityalo sokuxuba i-asphalt, i-aggregate kufuneka ihlaziywe kabini, i-layout iguquguqukayo, umjikelezo wokuvelisa kunye nofakelo ufutshane, kwaye ixabiso lexesha elilodwa lokutshala imali liphantsi.

Akunabulumko ukulandela ngokupheleleyo ukusebenza kobugcisa bezixhobo, okuya kwandisa utyalo-mali olungeyomfuneko. Nangona kunjalo, ukulandela kuphela utyalo-mali oluphantsi kunye nokunciphisa ukusebenza kobugcisa bezixhobo kuya kwandisa iindleko zokusetyenziswa, ezingathandekiyo. Kunengqiqo ukukhetha ixabiso elifanelekileyo /umlinganiselo wokusebenza.

Izityalo zokuxuba i-asphalt zihlulwe ngokwenkqubo yokuhamba: ukuxuba okuphakathi kunye nokuqhubekayo okunyanzeliswayo, kunye nohlobo lwegubhu kunye nokuxubana okuziwisayo okuqhubekayo. Ngokwemeko yokufakela kwayo, inokwahlulwa ibe yintlobo esisigxina kunye nohlobo lweselula. Ngaphambili, zonke iiyunithi zifakwe ngokusisigxina kwindawo kwaye zisetyenziswa kakhulu kwiimeko apho iiprojekthi ezinkulu zigxininiswe. Le yokugqibela inkulu kwaye inobungakanani obuphakathi, inazo zonke iiyunithi ezifakelwe kwiinqwelwana ezininzi ezikhethekileyo ezineeflethi, ezirhuqwe kwisiza sokwakha zize emva koko zidityaniswe kwaye zimiswe, kwaye ubukhulu becala busetyenziswa kwiiprojekthi zokwakhiwa kohola wendlela; kuba abancinci, iyunithi ifakwe kwi-trailer ekhethekileyo ye-flatbed, enokuthi Iyakwazi ukuhanjiswa nangaliphi na ixesha kwaye isetyenziswa kakhulu kwiiprojekthi zokugcinwa kweendlela. Isixhobo sokuxuba i-asphalt yekhonkrithi yohlobo lwedrum saphuhliswa ngeminyaka yoo-1970. Ibonakaliswa ngokumisa okuqhubekayo, ukufudumeza kunye nokuxuba isanti kunye negrabile kwidrama. Isitshisi sifakwe embindini wesiphelo sokutya komgqomo kwaye sifudunyezwe ecaleni kokuhamba kwezinto. Ulwelo lwe-asphalt olushushu lutshizwa kwisiqingatha esingaphambili segubu, luxutywe nentlabathi eshushu kunye negrabile ngendlela eziwisayo emva koko lukhutshwe, olunganeli nje ukwenza lula inkqubo kodwa lunciphisa nokubhabha kothuli. Iimveliso ezigqityiweyo ezingalayishwanga zigcinwa kwindawo yokugcina imveliso egqityiweyo ukuze isetyenziswe kamva. Olu hlobo lwezixhobo zokuxuba lusebenzise iteknoloji ye-elektroniki kunye nezixhobo ezintsha zokuvavanya kwiminyaka yamuva, ezinokuqonda i-automation yemveliso kunye nokulawula ngokungqongqo umlinganiselo wokuxuba ukuqinisekisa umgangatho wemveliso egqityiweyo.

Emva kokufunda oku, ngaba unokuqonda okunzulu malunga nezityalo zokuxuba i-asphalt?