Isitshalo Sokuxuba Esisebenzisa Kabusha Esishisayo Se-Asphalt Sinciphisa Kanjani Izindleko Ngaphandle Kokuzidela Ikhwalithi?

Kungani Abakhi Bebuza Ngezitshalo Zokuxuba Ezisebenzisa Kabusha I-Asphalt Hot

Uma uke waya embukisweni wokwakha imigwaqo muva nje, kungenzeka ukuthi uzwe umsindo ngesitshalo sokuxuba izinto ezishisayo esibizwa nge-asphalt . Wonke umuntu ukhuluma ngakho—abaphathi bamaphrojekthi, onjiniyela be-DOT, ngisho nabashayeli bamaloli ababevame ukusho ukuthi bathenga izinto ezingezona ezingezona ezivamile kuphela. Kodwa nansi umbuzo obiza izigidi zamaRandi: ingabe lobu buchwepheshe bunganciphisa isabelomali ngaphandle kokuguqula indlela yakho ibe umkhosi wemigodi? Ake sihlole futhi sithole.

Kuyini Ngempela “Ukuvuselela Okushisayo” Ngaphakathi Kwesitshalo?

Khohlwa ulimi olusetshenziswayo isikhashana. Ukuvuselela kabusha okushisayo kusho ukuphinda kufudumale i-asphalt pavement (RAP) ebuyiselwe emuva bese uyixuba ne-aggregate entsha kanye ne-bitumen ngaphakathi kwesigubhu esifanayo . Umlingo wenzeka ku-150–160 °C, lapho i-binder endala iphinda incibilike futhi ihlangane nezinto ezintsha. Umphumela? Ingxube eziphatha njengeresiphi engeyona i-virgin kodwa equkethe okuqukethwe okuphinde kwasetshenziswa okungu-50%. Kuhle, akunjalo?

I-Dollars-and-Cents Equation

Ake sixoxe nge-turkey. I-virgin binder ibiza cishe u-$700 ngethani emachwebeni amaningi ase-US. Faka u-40% walokho nge-RAP futhi usanda konga u-$280 ku-tani ngayinye ye-binder . Emsebenzini we-interstate ongamathani angu-20 000, lokho kuwukunciphisa izinto ezilinganiselwe okungu-$5.6 million . Ngisho nangemva kokubala amandla okomisa engeziwe kanye ne-rejuvenator enesilinganiso esiphezulu, usabheka ukonga okuphindwe kabili. Umnyango wakho wezezimali uzokuthanda ngakho.

Ingabe Ikhwalithi Iyathinteka? Imininingwane Yelabhorethri Ikhuluma Kakhulu Kunamahemuhemu

Amalabhorethri azimele e-DOT eTexas nase-Ontario enze izivivinyo zokubopha izintambo ezixubeni ze-RAP ezingama-50% ezikhiqizwe esitshalweni sokuxuba kabusha esishisayo se-asphalt sesimanje. Ukuqina okuguquguqukayo kubuye kuma -cycles angu-3 200/mm , ngaphezu kobuncane obungu-2 000. Uma umonakalo womswakama ukhona, isilinganiso samandla okudonsa sifinyelela ku-92 % , idlula isilinganiso esingu-80%. Ukuhumusha: umgwaqo ohamba ngezinyawo uhlala isikhathi eside—ngezinye izikhathi isikhathi eside—kunemigwaqo engasebenzisi mishini kuphela .

Ukushintsha Kusukela Ku-Batch Kuya Ku-Recycling: Yiziphi Izinguquko Esizeni?

Ngaphambi kokuthi uphuthume uyolungisa kabusha i-batch tower yakho yama-1970s, yazi lokhu: uzodinga isigubhu esihambisanayo noma indawo yokomisa ehlukene ukuze uvikele i-RAP elangabini eliqondile. Uzofaka ne- skid yokulinganisa yokuvuselela kanye ne-RAP cold-feed bin ene-variable-frequency drives. O, futhi into eyodwa —ikhompyutha yakho yesitshalo izodinga isibuyekezo sesofthiwe ukuze ilandelele izindawo eziningi zokushisa ngesikhathi esisodwa. Uma lokho kulungiswa sekuqediwe, ungashintsha phakathi kwezingxube ezihlanzekile neziphinde zasetshenziswa ngaphansi kwemizuzu engama-45.

Izinzuzo Zemvelo Ezenza Abalawuli Bamomotheke

Ithani ngalinye le-RAP olisebenzisa kabusha ligcina ama-0.45 t e-CO₂ emoyeni—kulingana nokutshala izihlahla ezingu-20. Phindaphinda lokho ngamathani ayizigidi ezintathu e-RAP asevele egciniwe e-US futhi ukhuluma ngethonya le-carbon edolobheni eliphakathi nendawo elinyamalala ngobusuku obubodwa. Amakhredithi e-LEED kanye nezimakethe zekhredithi ye-carbon seziqala ukuvuza lowo mkhuba, ngakho-ke okuluhlaza akuseyona nje umbala—kungenzeka ukuthi kutholakale.

Izinganekwane Ezivamile, Eziqothulwe

Inganekwane 1: “I-RAP imane nje iyinto emnyama eqatha eyenza kube buthaka ingxube.”

Iqiniso: Ngokuhlukaniswa okulungile kanye nokushisa okuphezulu kwegesi , i-RAP iyafana ne-virgin aggregate.

Inganekwane 2: “Awukwazi ukudlula i-RAP engu-25% ezindleleni zangaphandle.”

Iqiniso: I-Missouri DOT isanda kubeka indawo ye-RAP SMA engu-50% ku-I-35 ngo-2022—ayizange iqhekeke ngemva kobusika obubili.

Uhlu Lokuhlola Lokuqala Ngokushesha Lwabathengi Bokuqala

• Funa i -RAP feed yesivinini esiguquguqukayo ukuze ufinyelele ukunemba okungu-±1%.
• Phikelela kuma -sensor okushisa e-infrared ekuphumeni kwesigubhu ukuze uvimbele intuthu eluhlaza okwesibhakabhaka.
• Cela umshini wokushintsha ukushisa ozihlanza wona ukuze ungakhweli ngaphakathi nge-pressure washer njalo ngeviki.
• Xoxani ngesigatshana sokuvuselelwa kwesofthiwe seminyaka emihlanu ; ubuchwepheshe buhamba ngokushesha kule ndawo.

Ukuvikela Ikusasa: Igwebu Elifudumele, Ama-Bio-Rejuvenators, kanye Nangaphandle Kwalo

Abacwaningi eNetherlands sebevele befaka i-bitumen efudumele ye-foam ku-110 °C, okunciphisa amanye amandla angu-12%. Okwamanje, izinto zokuvuselela ezisekelwe ku-soy zithatha indawo yamafutha e-petroleum flux, zishukumisa okuqukethwe okuphinde kwasetshenziswa.70 % . Abantu abasebenzisa i -asphalt hot recycling plant bazokwazi ukufaka lobo buchwepheshe ngaphandle kokuthenga i-drum entsha. Cabanga ngakho njengokuvikela i-capex yakho esikhathini esizayo.

Iphuzu Elibalulekile: Ingabe Ukutshalwa Kwezimali Kuyifanele Ngo-2024?

Nciphisa izinombolo esitshalweni esingamathani angu-200 ngehora esisebenza nge-40% RAP. Uzophinde uthole iphakheji yokuvuselela engu-$1.2 million ezinyangeni ezingu-14 ngamanani e-binder anamuhla. Cabanga ngamakhredithi e-carbon, izimali zokushintsha indawo yokulahla udoti, kanye ne-halo yokumaketha "yomakhi wemigwaqo eluhlaza," bese inkokhelo yehla ibe ngaphansi konyaka . Ngakho-ke yebo, i-hype ingokoqobo. Umbuzo kuphela osele uthi: ungasikhipha nini isibhamu?