Ukubuyisa indlela yendlela yase-Arizona ukuya kwikhonkco ye-Portland Consentrete kunokungqina nje ukuba kuxhamle idayimane njengenye indlela yokugrumba kunye nokugcwalisa. Imbono ibonisa ukuba ngaphezulu kweminyaka engama-30, iindleko zesondlo ziya kuncitshiswa yi-USD 3.9 yezigidigidi.
Eli nqaku lisekwe kwi-webinar ebibanjelwe ngexesha loMbutho woMbutho weHlabathi kunye neGga (Igga) ngoDisemba 2020. Jonga idemo iphela.
Abahlali kwindawo yePhoenix ifuna ukuba bagudile, iindlela ezintle, kunye neendlela ezolileyo. Nangona kunjalo, ngenxa yokukhula kwenani labemi kwindawo kunye nemali engonelanga ukuba uqhubeke, iimeko zendlela kule ndawo ziye zancipha kule minyaka ilishumi idlulileyo. ISebe le-Arizontone (Adtot) lufundela izisombululo zokuyila ukugcina inethiwekhi yayo yendlela kwaye inike iintlobo zeendlela ezilindelekileyo.
I-Phoenix yesona sixeko siphantsi kakhulu eUnited States, kwaye isakhula. Inethiwekhi ye-MIL ye-MILE yeendlela kunye neebhulorho zigcinwa yisebe lezothutho (i-Adtot), uninzi lwayo lube neendlela eziphezulu zenqwelo-mafutha. Ngohlahlo-lwabiwo mali lokwakha le-US $ 500 yezigidi ngonyaka, le ndawo idla ngokuba yi-20 ukuya kwi-25 yokwakha iiprojekthi zokwakha indlela ephezulu yendlela uphela.
I-Arizona ibisebenzisa iindlela zekhonkrithi ukusukela nge-1920s. Ikhonkrithi ingasetyenziselwa amashumi eminyaka kwaye idinga ulondolozo kuphela kwiminyaka engama-20-25. Yeyarizona, iminyaka engama-40 yamava aphumelelayo yenza ukuba isetyenziswe ngexesha lokwakhiwa kweendlela eziphambili zikarhulumente nge-1960. Ngeli xesha, ukuhambisa indlela ngekhonkrithi kwakuthetha ukwenza urhwebo malunga nengxolo yendlela. Ngeli xesha, umphezulu wekhonkrithi ugqityiwe ngokujikeleza i-rake yensimbi kumhlaba wekhonkrithi ukuya kwikhonkrithi yetrafikhi), kwaye amathanga aqhuba kwikhonkrithi enomtsalane. Ngo-2003, ukuze kusombulule ingxaki yengxolo, i-1-1. I-Asphalt Ruber Ratere Sunter (Ar-Acfc) isetyenziswe kwikhonkrithi yekhonkrithi yePortland (PCC). Oku kubonelela ngembonakalo engaguqukiyo, isandi esizolileyo kunye nokuhamba okukhululekileyo. Nangona kunjalo, ukugcina umhlaba we-Ar-AcFC ungqine ukuba ngumceli mngeni.
Ubomi boYilo lwe-Ar-Acfc bulunga neminyaka eli-10. Iindlela ezinkulu zika-Arizona zidlule kubomi babo bokuyila kwaye ziyaluphala. Ukulungelelaniswa kunye nemiba enxulumene noko kubeka iingxaki kubaqhubi kunye neCandelo loMphathiswa Wezothutho. Nangona ukulibaziseka okuqhelekileyo kukhokelela kuphela kwilahleko ye-1 i-intshi yobunzulu bendlela (kuba i-1-intshi i-1-intshi ithathelwe ingqalelo njengempohlo yoluntu ekuhambeni koluntu kwaye ithathwa njengengalunganga ingxaki.
Emva kokuvavanya idayimani yedayimani, i-Diredrete yeDilesi elandelayo, kunye nokugqiba umphezulu wekhonkrithi kunye ne-rimete grinder okanye i-micromilling, i-astot igqibe kwelokuba i-Green Iri ) kunye nokukhutshelwa kwengxolo ephantsi. I-Randy Everettt kunye ne-Arizona iSebe lezoThutho
I-Arizona isebenzisa i-Index yeLizwe (iri) yokulinganisa iimeko zendlela, kwaye inani liye lancipha. (Iri luhlobo lwedatha yeenkcukacha-manani, ephantse yasetyenziswa ngamaziko eSizwe njengesalathiso sentsebenzo yenkqubo yabo yokulawulwa kwendlela yabo yendlela. Ixabiso eliphantsi, elinqwenelekayo). Ngokwemilinganiselo ye-Iri imilinganiselo eqhutywa ngo-2010, i-72% yeendlela eziphezulu kwingingqi zikwimeko elungileyo. Ngo-2018, le nxalenye yayiwile kwi-53%. Iindlela zenkqubo yeNdlela yeSizwe ikwabonisa imeko esezantsi. Imilinganiselo ngo-2010 ibonise ukuba i-68% yeendlela yayikwimeko elungileyo. Ngo-2018, eli nani liye layeka ukuya kwi-35%.
Njengoko iindleko zinyuswe-kwaye uhlahlo-lwabiwo mali alunakuqhubeka-ngo-Epreli ngo-2019, uAdat waqalisa ukukhangela ukhetho olungcono lwebhokisi yebhokisi yangaphambili. Iindlela ezikwimeko entle kwi-10 ukuya kwi-15 yobomi boyikelo lwefestile-kwaye iya kuba ibaluleke ngakumbi kwiSebe ukuba igcine indlela ekhoyo yokutywina, ukutshiza kokutshiza Ungqimba lokukhanya, ngokuthe ngcembe i-asphalt eulsion ye-Asphalt eulsion, okanye ulungisa imingxunya nganye. Iindlela ezidlula kubomi boyilo, enye inketho kukucima i-aspharked asflt kwaye ubeke i-asphar entsha yerabha. Nangona kunjalo, ngenxa yenqanaba lendawo ekufuneka ilungisiwe, oku kuyangqina ukuba ziindleko kakhulu. Omnye umqobo kuwo nasiphi na isisombululo esifuna ukugaya okuphindaphindiweyo kwe-asphalt kukuba izixhobo zokugcina zinokuchaphazela ngokufanelekileyo kwaye zonakalise ikhonkrithi yekhonkrithi, kwaye ilahleko yezinto zekhonkrithi kumalungu aphantsi kakhulu.
Kuya kwenzeka ntoni ukuba iArizona ibuyele kumphezulu we-PCC? U-Ardat uyazi ukuba iindlela zekhonkrithi zekhonkrithi kuRhulumente ziyilelwe ukubonelela ngozinzo lwezakhiwo ixesha elide. ISebe liqaphele ukuba ukuba banokusebenzisa i-PCC engaphantsi kwe-PCC yokuphucula indawo yayo yentsusa yokuba benze indlela ethe cwaka kunye nokukhwela, indlela elungisiweyo inokuhlala ixesha elide kwaye ifuna i-SEFTE. Ingaphantsi kakhulu kune-asphalt.
Njengenxalenye yeProjekthi kwi-SR 101 Imantla ePhoenix, i-Ar-AcfC ye-Ar-Acfc isusiwe, ke i-ANTOT ifake izisombululo ezine zovavanyo eziza kusebenzisa iqonga eliselula, ukukhwela ukuthula kunye nokukhwela ngokuthe cwaka. Isebe liphonononge ukugaya idayimane kunye nendawo elandelayo ye-Divercete (i-NGCs), isikhundla esineprofayili yomhlaba esilawulwayo kunye nokuhlelwa kwendlela engalunganga okanye esezantsi, esele iphuhlisiwe njengeyona ndlela ye-Ikhonkwo yeNgenyano-ngxolo ephantsi. I-Adtot ikwathathela ingqalelo ukusetyenziswa kwe-grinder yokutyibilika (inkqubo apho umatshini ubakhokela ibhola ekhokelayo kwindawo yendlela yokuphucula iimpawu zendlela) okanye ukugaya okuncinci ukugqiba umphezulu wekhonkrithi. Emva kovavanyo lwendlela nganye, i-Adat igqibe kwelokuba umbhalo onde ofunyenwe sisigaba sedayimani ibonelela ngembonakalo ethandekayo yedayimane ibonelela ngexabiso elihle le-iri (njengoko kubonisiwe lixabiso eliphantsi) kunye nengxolo ephantsi. Inkqubo yokugaya idayimane iqinisekisiwe ukuba inobulali ngokwaneleyo ukukhusela iindawo zekhonkrithi, ngakumbi ijikeleze amalungu, ebeyonakaliswe ngaphambili ngokulling. Ukugaya idayimani ikwasisisombululo esisebenzayo.
NgoMeyi ka-2019, u-Adat wagqiba kwelokuba agale idayimani kwicandelo elincinci le-SR 202 elikwindawo esemazantsi ePhoenix. Indlela ye-Ar-Ac-Acfu ye-Arfc yayikhululekile kwaye yalila ukuba amatye akhululekileyo aphoswa kwisigqubuthelo somoya, kwaye abaqhubi bakhalaza malunga ne-windlield yonakaliswe ngamatye abhabha yonke imihla. Inxalenye yamabango elahleko kulo mmandla ingaphezulu kweminye imimandla yelizwe. Indlela yendlela ikwanengxolo kakhulu kwaye kunzima ukuqhuba. I-Adibashisheshe ukhethe ukugqiba ukugqitywa kweendlela ezimbini ezihamba ngeenyawo ecaleni kwe-SR 202 isiqingatha semikhonto. Basebenzisa ibhakethi yomthwalo ukususa umaleko osele ekhona ngaphandle kokwenzakalisa ikhonkrithi engezantsi. Eli Sebe livavanye ngempumelelo le ndlela ngo-Epreli xa babecinga ngeendlela zokubuyela kwindlela ye-PCC. Emva kokuba iprojekthi igqityiwe, ummeli we-actot waphawula ukuba umqhubi uza kuvela kwi-Ar-Acfu ye-Ar-Acfc kwikhonkco elinomgangatho wedayana ukuya kumava okuphuculwa kunye neempawu zesandi.
Nangona ingezizo zonke iiprojekthi zokulinga ezigqityiweyo, iziphumo zokuqala kwiindleko zibonisa ukuba ukonga okunxulumene nokusetyenziswa kwendlela yekhonkrithi, idayimane egudileyo yokuphelisa ukugcinwa kwe- $ 3.9 yezigidigidi kwiindleko zonyaka. Ngaphezulu kweminyaka engama-30. I-Randy Everett kunye nesebe le-Arizona lezothutho
Ngalo lonke eli xesha, umbutho waseburhulumenteni waseMaricopa (Mag) ukhuphe ingxelo evavanya ingxolo yendlela kunye nokudakumba. Ingxelo ivuma ubunzima bokugcina inethiwekhi yendlela kwaye ijolise kwiimpawu zengxolo zendlela. Isiphelo esiphambili kukuba ngenxa yokuba inzuzo yengxolo ye-AR-ACFC inyamalale ngokukhawuleza, "ukunyangwa komhlaba kwedayimani kufuneka kuthathelwe ingqalelo endaweni yerabha." Olunye uphuhliso lwangaxeshanye yimvumelwano yokuthengwa kwempahla evumela ukugaya idayimani i-Direcractor yaziswa ukuze kugcinwe nolwakhiwo.
I-Adat ikholelwa ekubeni lixesha lokuthatha inyathelo elilandelayo kunye nezicwangciso zokuqalisa iprojekthi enkulu yokufumana i-SR 202 ngoFebruwari 2020. Iprojekthi enkulu, kubandakanya amacandelo athambekileyo. Indawo inkulu kakhulu ukuba ingasebenzise umthwalo ukuze isuse i-asphalt, ngoko ke yomatshini wokugaya wasetyenziswa. ISebe linqumle imitya kwirabha i-aspharlt yekontraktha yokulinganisa ukuba isetyenziswe njengesikhokelo ngexesha lenkqubo yokugaya. Ngokwenza kube lula ukuba umqhubi abone umhlaba we-PCC phantsi kwekhava, izixhobo zokugaya zingahlengahlengiswa kwaye ukonakala kwikhonkrithi engaphantsi kweqonga kunokuncitshiswa. Umhlaba wokugqibela wedayimani we-SR 202 udibana nayo yonke imigangatho ye-adts-ithe cwaka, igudile kwaye inomtsalane kwaye inomtsalane kwi-Asphalt Eversis, Ixabiso le-Iri yayithandeke kakhulu nge-1920s. Ezi mpawu zengxolo ezinokuthelekiswa zinokufunyanwa ngenxa yokuba nangona i-Ar-AcfC eNtsha ye-Ar-Acfc iqulathe i-5 ukuya kwi-Ar-Abfc Povement yeminyaka emi-5 ukuya kwele-9, iphakamile kwinqanaba le-DB. Ayisiyo kuphela inqanaba lengxolo le-SR 202 Idayimani yedayimani iphantsi kakhulu kubaqhubi, kodwa indlela yendlela ivelisa ingxolo encinci kwiindawo ezikufutshane.
Impumelelo yeeprojekthi zabo zokuqala eziqhutywa i-adot ukuqala ezinye iiprojekthi zokugaya idayimane. Idayimani yedayimani ye-Loop 101 Ixabiso lendlela igqityiwe. Idayimani yedayimani ye-loop 101 ye-pime yendlela iya kwenziwa ekuqaleni kuka-2021, kwaye ukwakhiwa kwe-loop 101 i-17 ukuya kwi-75th Avenue kulindeleke ukuba yenziwe kule minyaka mihlanu izayo. I-Adtot iyakulandelela ukusebenza kwazo zonke izinto ukukhangela inkxaso yamajoyi, nokuba ikhonkrithi igqibile, kwaye ilondolozwe umgangatho wesandi kunye nokukhwela umgangatho.
Nangona ayizizo zonke iiprojekthi zokulinga ezigqityiweyo, idatha eqokelelweyo ukuza kuthi ga ngoku ithethele inkathalo yedayimane njengenye indlela yokugrumba kunye nokugcwalisa. Iziphumo zokuqala zophando lweendleko zibonisa ukuba ukonga okunxulumene nokusetyenziswa kwendlela yekhonkrithi kunye nedayimane ekuphendule inkangeleko, ukugudisa kunye nesandi sinokunciphisa iindleko zeminyaka engama-30.
Ngokusebenzisa indawo ekhoyo yekhonkrithi kwiPhoenix, hayi kuphela uhlahlo-lwabiwo mali kuphela olunokwandiswa kwaye iindlela ezininzi zigcinwa zikwimeko elungileyo, kodwa ukuqina kwekhonkrithi kuqinisekisa ukuba ukuphazamiseka okunxulumene nokulungiswa kwendlela kuyancitshiswa. Okona kubaluleke kakhulu, uluntu luya kuba nakho ukonwabela umhlaba ogudileyo noxolo.
URandy Everett ngumlawuli weSebe eliPhezulu weSebe lezoThutho kwi-Irizona.
I-Igga yimvumelwano yezorhwebo engafakwanga nzuzo esekwe ngo-1972 liqela leengcali zeshishini elizinikeleyo, ezinikezelwe kuphuhliso lwedayimani yedayimani kunye neenkqubo ezihlekisayo ze-Portland yekhonkrithi kunye ne-asphalt. Ngo-1995, i-Igga yajoyina i-American Pointiment Acvation Umbutho (i-ACPA), ukwenza i-Igga / yeNgcebiso ye-Igga / yeNgcebiso ye-ACPA ye-Igga / I-IGGA / ACPA C). Namhlanje, le ntsebenziswano sisixhobo sobugcisa kunye nenkokheli yeshishini kwintengiso yehlabathi yendawo efanelekileyo yokuthengiswa kwendawo, ukulungiswa kwekhonkrithi kunye nokhuseleko lwendlela. Injongo ye-Igga iya kuba yitekhnoloji ephambili kunye nokukhuthaza ukwamkelwa kunye nokusetyenziswa ngokuchanekileyo kwedayimani kunye nokulungisa, kunye nokubuyiselwa kwe-PCC kunye nokubuyiselwa.
IXESHA LOKUQALA: UPE-08-2021