Isitshalo Se-Asphalt Sisebenza Kanjani Futhi Sihlale Sinobungani Nemvelo?

Wake Wazibuza Ukuthi Kwenzekani Ngemuva Kwe-Stack?

Njalo uma uhamba ngomgwaqo osanda kugawulwa, ushayela ngemoto phezu kwefektri encane yamakhemikhali eyayike yaduma ngo-180°C. Kodwa isitshalo se-asphalt sisebenza kanjani, futhi kungani osonkontileka, abatshalizimali, noma ngisho nabagibeli abanombono wezemvelo kufanele bakhathalele? Hlala ubukele—ekupheleni kwalokhu kufunda okusheshayo uzokwazi ukuhamba uye kunoma iyiphi indawo yomsebenzi ukhulume sengathi ungowakho.

Ukuhamba Komsebenzi Okuyinhloko: Kusukela Ku-Aggregate kuya ku-Hot-Mix

Enhliziyweni yaso, isitshalo se-asphalt siwumfelandawonye oqondile wokushisa, i-chemistry, kanye ne-physics yemishini. Ukulandelana cishe kuyafana njalo:

1. Amabhokisi okuphakelwa okubandayo akhipha ama-aggregate (itshe, isihlabathi, i-RAP) ku-conveyor yebhande ngezilinganiso ezihleliwe.
2. Isikrini sokusika idwala esinezitezi eziningi sidonsa idwala elikhulu kakhulu liphume ekugelezeni kwalo—yebo, “ngaphandle” yindlela abantu bezitshalo abakusho ngayo—ngaphambi kokuba lifike esigubhini.
3. I-rotary dryer iphakamisa izinga lokushisa eliphelele libe ngu-±160°C kuyilapho isishisi siphonsa amalangabi isikhathi eside kunebhasi lesikole.
4. Ilifti eshisayo iphakamisa izinto ezomile ziye phezulu kombhoshongo lapho ziwela khona emadekini okuvikela kanye nasezitsheni zokulahla izinto ezishisayo.
5. I-bitumen ipompiwa kusuka emathangini avikelwe bese ifakwa ngebha yokufafaza; i-filler (i-lime, i-simende) iyalinganiswa ukuze ilungise i-viscosity.
6. I-Pugmill noma i-twin-shaft mixer ihlanganisa yonke into imizuzwana eyisithupha nje kuphela—isikhathi sibalulekile ngoba i-asphalt iqina ngokushesha.
7. Ama-silo okulayisha agcina ingxube eshisayo eqediwe kuze kufike amaloli, okugcina isitshalo sisebenza kahle endaweni yokuqina kunokuba siqale phansi.

Ushintsha kusuka eqenjini uye kokuqhubekayo? Ungakhathazeki. Izitshalo ezixube izigubhu zigoqa izinyathelo ezi-3-6 zibe yigubhu elilodwa elide, zishintshana ngokulawula okunembile kweresiphi ukuze kutholakale umphumela ophakeme ngamathani angu-20% ngehora.

Izingxenye Eziyinhloko Okungekho Okhuluma Ngazo

1. Ikhola ye-RAP

I-asphalt pavement (RAP) evuselelwe ayimane nje ilahlwe ngaphakathi; ingena nge-mid-drum collar lapho i-virgin aggregate esivele ishiswe khona ku-180 °C ikhipha umswakama ngaphandle kokushisa i-bitumen endala. Kushisa kakhulu futhi uthola intuthu eluhlaza okwesibhakabhaka; kupholile kakhulu futhi uthola isiphithiphithi esinamathelayo, esingahlangani.

2. Indlu Yezikhwama Nokuthwebula Kwesibili

Ngemva kokuba igesi yokukhipha umoya iphume esigubhini, i-pulse-jet baghouse traps ifinyelela ku-1 micron. Izitshalo zanamuhla zifaka i-activated carbon noma i-lime slurry kuma-nail polycyclic aromatic hydrocarbons (ama-PAH). Umphumela ophelele: i-stack opacity engaphansi kuka-10%, okunqoba iningi lama-chimney e-coffee-roaster.

3. Indwangu Yokushisa Yesilo Ekhishwayo

Wake waqaphela ukuthi amanye ama-silo akhanya kancane ebusuku? Indwangu ijikeleza ukushisa okubanjwe eduze kwekhoni yesilo, ivimbela "izindawo ezishisayo" ezifaka i-bitumen futhi ziguqule ingxube yakho ebizayo ibe yi-popcorn ephukayo.

Ukuqothulwa Kwezinganekwane Zemvelo

“Izitshalo ze-asphalt ziyizilo ezisusa intuthu.” Lowo mugqa ungowama-1970. Selokhu ukuhlolwa kwe-EPA Method 9 kwaba yinto ejwayelekile, ukukhishwa okujwayelekile kwegesi ngethani lengxube kwehle ngo-97%. Izishisi ze-NOx eziphansi, ama-variable-frequency drives kuwo wonke umshini, kanye nezengezo ze-warm-mix ezinciphisa amazinga okushisa okukhiqiza abe ngu-135 °C konke kuyahlangana. Iphuzu elibalulekile: manje ukhipha okuncane kakhulu ukusebenzisa isitshalo samathani angu-200/ihora kunomalume wakho osebenzisa i-asphalt paver eyodwa.

Ukulungiswa Kwedijithali Nokulungiswa Kokubikezela

Izinzwa ezixhunywe efwini zilandelela ukucindezeleka kwebhande, ukudlidliza kwamabhere, kanye ne-ionization yelangabi lesishisi. Amamodeli okufunda ngomshini abonisa ukungalingani emasontweni ngaphambi kokuba ibhande elibandayo liqhume ngo-2 ekuseni—ngithembe, akekho ofuna ukwenza i-splice ngethoshi. Phakathi neminyaka engama-25 yokuphila kwesitshalo, ukuhlaziya okubikezelayo kungonga imali efika ku-$1.2 million ngesikhathi sokungasebenzi esingahleliwe.

Isibonelo se-ROI somhlaba wangempela

Isifunda saseMidwestern sishintshe kusuka ku-100% virgin saya ku-40% RAP mix. Izindleko zokuqala: US $180 k wekhola entsha ye-RAP kanye nesikrini. Imbuyiselo: Izinyanga ezingu-14 ngenxa yokonga kwaminyaka yonke kwe-US $110 k ku-virgin aggregate kanye ne-bitumen. Ibhonasi: i-modulus yokuqina komgwaqo ithuthuke ngo-8%, ngoba i-bitumen egugile kahle empeleni iqinisa i-mastic. Akukubi "ngodoti" amashidi amadala e-specs akutshela ukuthi ulahle kuwo udoti.

Ukuphazamiseka Okuvamile Nokulungiswa Okusheshayo

• Umswakama ku-RAP: Isivalo sokuphakama kwesitoreji singamamitha angu-3, ​​simboze ngama-tarps, bese usilayisha ngaphambili uma uphuma kuqala.
• Intuthu eluhlaza okwesibhakabhaka: Yehlisa izinga lokushisa lokungena kwedrama ngo-10 °C bese uhlola isilinganiso somoya-kuya-kuphethiloli; ngokuvamile kucebile kakhulu.
• Ukuhlukaniswa endaweni yokugcina: Faka i-insert yekhoni egeleza ngobuningi; kubiza u-$5 k, konga amathani angu-50 engxube elahliwe ngenyanga.

Amathrendi Esikhathi Esizayo Okufanele Uwabuke

Ama-OEM ezitshalo ahlola izishisi ze-hydrogen kanye nezingxube ze-RAP ezingama-60% zisebenzisa ama-bio-rejuvenator atholakala ku-pine resin. Uma amakhredithi e-carbon ehlala ngaphezu kwama-US $70 ngethani, lindela ukuthi abathuthi bokuqala bathole ama-retrofits angaphansi kweminyaka emine. Okwamanje, ama-fur-mix foam kit aphinde afakwe kunoma yisiphi isitshalo esikhona ehla ngaphansi kwama-US $30 k, okusho ukuthi ngisho nama-paver amancane angabhida ezinkontilekeni "zomgwaqo oluhlaza" uma sezigcinelwe abafana abakhulu.