Isitshalo Se-Asphalt se-TTM - Umkhiqizi Wemishini Yokuxuba Nokuvuselela I-Asphalt Ochwepheshe Kusukela ngo-2004.
I-China Asphalt Hot Mixing Plant Slash Izindleko Zikanjani kanye Ne-Carbon Ngo-2024?
Kungani Imboni Yokwakha Imigwaqo Yomhlaba Wonke Ibheka Ubuchwepheshe Bokuvuselela Obushisayo BaseShayina
Uma uke wabheka noma iyiphi inkundla yengqalasizinda muva nje, kungenzeka ukuthi uke wabona umsindo ozungeze isitshalo sokuxuba kabusha esishisayo se-asphalt sase-China . Lezi zinhlelo zithembisa ukufaka esikhundleni sama-50% ama-aggregates angenasici kanye ne-bitumen nge-recycled asphalt pavement (RAP), zinciphise izindleko zezinto ezibonakalayo kakhulu. Kodwa ingabe lokhu kukhuluma kulungile, noma kumane nje kuyicebo lokumaketha "eliluhlaza"? Ake sibheke idatha yangempela yephrojekthi esikhundleni sezincwajana ezikhazimulayo.
Kwenzekani Ngempela Ngaphakathi Kwe-Hot Recycling Mixer?
Izitshalo zendabuko zishisa ama-virgin aggregates ku-170-180 °C, bese ziwamboza nge-bitumen entsha. I-hot recycling mixer eyakhiwe eShayina inezela "i-RAP drying drum" eyengeziwe efudumeza kakhulu i-asphalt egayiwe ku-130 °C ekamelweni elincishiswe umoya-mpilo. Lokhu kuvimbela ukuguga kwe-binder ngenkathi kuhwamuka umswakama. I-RAP efudunyezwa kakhulu ibe isixutshwa nezinto ezifudunyezwa kakhulu, ngakho izinga lokushisa lokugcina lengxube lihlala cishe ku-155 °C—15 °C ngaphansi kwezingxube ezivamile. Izinga lokushisa eliphansi lilingana nophethiloli omncane, umusi omncane, kanye nomakhelwane abajabule abahlala eduze kwesitshalo. Kulula kanjalo, angithi?
Izingxenye Eziyinhloko Ezenza Umehluko
- Amabhokisi okulinganisa e-RAP anesivikelo esikabili - susa izingcezu ezinkulu kakhulu ezidala amabala abandayo engxubeni.
- Ukomisa okuhambayo okuhambisanayo ngezinzwa ze-infra-red - ukulungiswa komswakama ngesikhathi sangempela ngaphakathi kwe-±0.2%.
- Ukuqoqwa kothuli olunezigaba ezintathu – isiphepho esiyinhloko, indawo yokugcina izikhwama, kanye ne-wet scrubber kugcina ukukhishwa kwe-PM kungaphansi kuka-20 mg/m³, okuhlangabezana nemininingwane yaseCalifornia.
- Imigqa ye-bitumen enejakhethi kawoyela oshisayo - gcina amazinga okushisa angu-165 °C ngokunemba okungu-±2 °C, ukuvimbela ukuhlukaniswa phakathi nohambo olude.
Ingabe i-50% RAP Ingamelana Nethrafikhi Enkulu?
Abangabazayo bakhathazekile ngokuthi izingxube ze-high-RAP ziyaqhekeka ngaphansi kwemithwalo esindayo yama-axle. Ucwaningo lwango-2023 olwenziwe yiChang'an University lulandele umgwaqo omkhulu osuka esifundazweni saseShandong owakhiwe nge-48% RAP endleleni yokugqoka. Ngemva kwama-ESAL ayizigidi ezingu-14.2 (imithwalo efanayo yama-axle eyodwa), i-International Roughness Index ikhuphuke ngo-0.8 mm/km kuphela, ngaphansi kakhulu kwe-trigger yokulungisa engu-2.0 mm/km. Ukuhlaziywa kwe-Microscopic kubonise ukuthi i-binder ephinde yasetshenziswa yayine-complex modulus (G*) efana ne-virgin PG 76-22, ngenxa yama-rejuvenator aguquliwe e-polymer angezwe ngo-0.6% ngesisindo sengxube. Ukuhumusha: umgwaqo wawuziphatha njengomusha, kodwa ubiza kancane ngo-28%.
Izitshalo zaseShayina Zigcina Kanjani Ukusetshenziswa Kwezimali Okuphansi Kangaka?
Abakhiqizi baseNtshonalanga bavame ukucaphuna ama-USD ayizigidi ezingu-5–6 ngesitshalo sokuvuselela kabusha esishisayo esingu-240 tph. Isitshalo sokuxuba kabusha esishisayo se-asphalt saseShayina esifanayo sifinyelela cishe ku-USD ayizigidi ezingu-2.8, ngisho nangemva kokuthunyelwa kanye nentela yokungenisa. Kunezici ezintathu ezibangela igebe:
- Ukuhlanganiswa okuqondile - Izimboni zaseShayina zakha ama-burners azo, ama-gearbox, kanye nama-cage okugcina izikhwama, zinciphisa inani lazo.
- Isikali** – isidingo sasekhaya semigwaqo emikhulu sidlula amakhilomitha angu-4 000 ngonyaka, ngakho-ke abahlinzeki baqhuba imigqa yokukhiqiza amahora angu-24 ngosuku, izinsuku eziyi-7 ngesonto, benciphisa izindleko zeyunithi.
- Uxhaso lukahulumeni lwemishini "eluhlaza" - abathumeli ngaphandle bathola isaphulelo se-VAT esingu-13%, inzuzo edluliselwa buthule kubathengi baphesheya kwezilwandle.
I-ROI Yangempela: Ucwaningo Lwecala LaseNigeria
I-Lagos State Public Works ithole inkontileka yesitshalo saseShayina esingu-200 tph ngekota yokuqala ka-2022, ihlose ama-tani angu-120 000 okuxuba imigwaqo exhumanisa isikhumulo sezindiza. Izindleko zikadizili: USD 0.92 ngelitha; I-RAP itholakala mahhala kusuka ekugayweni kwendawo. Inkontileka ithole okuqukethwe yi-RAP okungu-47%, yonga u-31% ku-bitumen kanye no-22% kuma-aggregates. Inkokhelo ifike ezinyangeni ezingu-14—hhayi iminyaka eyi-10 ecatshangelwayo ozwa ngayo ezinkulumweni zengqungquthela. Ngaphezu kwalokho, ukukhishwa kwe-CO₂ kwehle ngo-38%, kwasiza uhulumeni wesifundazwe ukuhlangabezana nezivumelwano zemalimboleko ze-AfDB. Akukubi, akunjalo?
Kuthiwani Ngokusekelwa Ngemva Kokuthengisa—Izingxenye Ezisele Ziyiphupho Elibi Noma Ukuhamba Okushelelayo?
Abathengi bake besaba ukuthi imishini yaseShayina “eshibhile” isho amasonto okungasebenzi isikhathi sokulinda inzwa engu-2 kg. Izikhathi zishintshile. Ama-OEM aphezulu manje asebenzisa izindawo zokusebenzela izingxenye zesifunda eNigeria, ePeru, nasePoland, egcina u-90% wamayunithi angashintshwa ngomugqa esitokweni sendawo. Imojula ye-IoT enikwe amandla yi-VPN esitshalweni ngasinye ithumela i-telemetry ku-Chengdu HQ; ama-algorithms okubikezela abonisa uchungechunge lwe-elevator olugugile amahora angu-150 okusebenza ngaphambi kokwehluleka. Amakhasimende athola i-invoyisi ye-pro-forma ezenzakalelayo futhi angakhetha i-DHL Express noma i-local pickup. Isikhathi sokungasebenzi simaphakathi namahora angu-1.8 ngamahora okusebenza angu-1 000, ngokuhambisana nemikhiqizo yaseYurophu.
Umhlahlandlela Wokulawula: Ingabe Izwe Lakho Lizovumela Ukuxhashazwa Okungama-50%?
Ngaphambi kokuthi ungene kulesi sigaba, hlola imininingwane yendawo. EFrance, i-NF P 98-150 ejwayelekile ivala i-RAP ku-30% yezindawo ezizungezile, kodwa iJalimane ivumela u-50% uma ingxube ephinde yasetshenziswa idlula ukuhlolwa kwe-Alkali-Silica Reactivity. Okwamanje, izifundazwe eziningana zase-US zisadlala ngemikhawulo engu-20%. Izindaba ezinhle: isitshalo sokuxuba esishisayo se-asphalt sase-China singashintsha phakathi kuka-15% no-60% we-RAP ngokulungisa nje isivinini se-elevator kanye nephrofayili ye-burner, ukuze uhlale uthobela ngenkathi unxenxa imikhawulo ephezulu.
Ishidi Lokukhohlisa Labathengi Bezitshalo Elisheshayo
| Ipharamitha | Isitshalo Esijwayelekile saseShayina esingu-240 tph |
|---|---|
| Ububanzi be-RAP | 10–60 % |
| Ukusetshenziswa kukaphethiloli | I-diesel engu-5.2 kg ngethani ngalinye ingxube ye-45% RAP |
| Isiqinisekiso somswakama | ≤0.3 % ekuhlanganisweni kokugcina |
| I-Plant EI (Inkomba Yamandla) | 142 MJ/t (ISO 15695) |
| Thumela ikhodi ye-HS | 8474.32 |
Iphuzu Elibalulekile: Ingabe Ukutshalwa Kwezimali Kuyifanele Ngo-2024?
Njengoba i-bitumen ihweba ngama-USD 520 ngethani kanye nokuhlanganiswa kwayo kukhuphuka ngo-9% unyaka nonyaka, iphuzu ngalinye le-RAP lisindisa cishe ama-USD 7.40 ngethani lengxube. Isitshalo sama-tph angu-200 esisebenza amahora angu-2 000 ngonyaka sikhiqiza ama-t angu-400 000; ngama-RAP angu-45%, lokho kusho ukuthi i-USD 1.33 million isindisa minyaka yonke. Cabanga ngama-carbon credits kanye nezimali zokulahla udoti, kanti isitshalo sokuxuba kabusha i-asphalt e-China siba yimpahla ye-ROI esheshayo emikhunjini yakho—ngaphandle kokuthi amanani kawoyela ehle ngaphansi kwama-USD 40, isimo ngisho nabahlaziyi abangenangqondo kakhulu behliselwa phansi. Ukulungele ukukhuluma ngezinombolo nomhlinzeki, noma usalinde ubuchwepheshe “obuphelele” obungase bungalokothi bufike?
