Uchungechunge lwewebhu oluvela kuMbutho weSizwe we-Asphalt Pavement usete ukugqamisa izibonelelo zale nto iguqukayo
Ukurisayikilishwa kweTire yinkqubo yokuguqula isiphelo sobomi okanye amatayara amadala angafunwayo abe yimathiriyeli enokuthi isetyenziswe kwiimveliso ezintsha.Amatayara okuphela kobomi ngokuqhelekileyo aba ngabaviwa bokuphinda asetyenziswe xa engasasebenzi ngenxa yokuguga okanye onakeleyo kwaye akakwazi ukunyathelwa kwakhona okanye ukuhlanjululwa kwakhona.
Ngokoshishino lwamatayara, ukurisayikilishwa kwamatayara libali lempumelelo enkulu.Ukugcinwa kwamatayara alahliweyo kuye kwancipha ukusuka ngaphaya kwebhiliyoni ngo-1991 ukuya kwizigidi ezingama-60 ngo-2017 kwaye ishishini le-asphalt ngumba omkhulu ekucutheni inani lamatayara kwiindawo zokulahla inkunkuma.
Ukusetyenziswa kwerabha ephantsi komhlaba kubalelwa kuma-25% okusetyenziswa kwamatayara alahliweyo ngo-2017. Irabha ephantsi komhlaba isetyenziselwa ukuvelisa inani leemveliso kodwa olona setyenziso likhulu lwerabha yomhlaba yerabha ye-asphalt, isebenzisa malunga ne-220 yezigidi zeeponti okanye i-12 lezigidi zamatayara ngonyaka.Abona basebenzisi makhulu berabha ye-asphalt ngamaphondo aseCalifornia naseArizona, elandelwa yiFlorida, kunye nokusetyenziswa okulindelwe ukukhula nakwamanye amazwe.
Irabha esetyenzisiweyo yamavili (RTR) esuka kumavili asetyenzisiweyo isetyenziswe kwi-asphalt lishishini lokupakisha ukusuka kwi-1960's.I-RTR isetyenziswe njenge-asphalt binder modifier kunye ne-asphalt yomxube wokudibanisa kwi-gap-graded kunye ne-open-graded mix mix and treatment surface.
Irabha yetayara esetyenzisiweyo ngokusisiseko yirabha yetayara esetyenzisiweyo ngokutsha eye yaculwa yaba ngamasuntswana amancinane kakhulu ukuze isetyenziswe njengesilungisi se-asphalt.Ukongeza irabha yamatayara asemhlabeni kwi-asphalt kunokuba negalelo ekuphuculeni ukuxhathisa kwe-rutting, ukuxhathisa ukutyibilika, umgangatho wokukhwela, ubomi bepavumente kunye nokunciphisa amanqanaba engxolo kwipavumente.Ukongeza irabha kulwelo lwe-asphalt kuthintela ukuguga kunye ne-oxidation yesibophelelo esisisiphumo, esonyusa ubomi bepavumente ngokunciphisa ukuqaqanjelwa kunye nokuqhekeka.
Ukuphathwa kunye nokuqhekeka kwamatayara yinkqubo ecwangcisiweyo kwaye ibekwe esweni ukuvelisa i-rubber ecocekileyo kwaye ihambelana kakhulu.I-rubber crumb iveliswa ngenkqubo yokugaya amathayi erabha kwiincinci ezincinci.
Ebudeni benkqubo, ivili lokuqinisa ucingo kunye nefayibha liyasuswa.Intsimbi isuswa yimagnethi kwaye i-fiber isuswe yi-aspiration.Ukucutshungulwa kwamatayara kusetyenziswa i-cryogenic fracturing kubandakanya ukusika iziqwenga ezinkulu zamatayara zibe zincinci, ngokuqhelekileyo amasuntswana angama-50 mm, kusetyenziswa iintsimbi ezibukhali zokusika.Ezi ziqwenga zincinci ziye zikhenkcezeke kwaye ziqhekezwe.Amaqhekeza e-rubber ahlanjululwa kwaye ahlulwe kwiinqununu zobukhulu obuhlukeneyo, njengoko kuchazwe ngumthengi.Iinqununu zerabha ezibangelwayo zihlala zilinganisa kwaye zicoceke kakhulu.Iinkqubo zokupakisha ezizenzekelayo zinceda ukuqinisekisa ubunzima bengxowa efanelekileyo kunye nokuphelisa ukungcoliswa komnqamlezo.
Umbutho weSizwe we-Asphalt Pavement (NAPA), uya kubamba i-Apho i-Rubber idibana ne-Road Webinar Series kweli hlotyeni kwi-rubber yesondo ehlaziyiweyo kunye ne-asphalt.
Ixesha lokuposa: Jun-19-2020