I-SMA—Stone Mastic Asphalt—akuyona nje enye incazelo yetiyela. Isilinganiso sokusebenza. Lapho imigwaqo ewuthelawayeka ithwala izimoto ezingu-30,000+ nsuku zonke, lapho imigwaqo yezindiza zezindiza ibhekana nokuqhuma kwendiza kanye nokuhamba ngamabhayisikili ashisayo, futhi lapho imigwaqo yasemadolobheni ibekezelela ukubhidlizwa kwamabhuleki nokushisa kwasehlobo okungaphezu kuka-65°C, amamiksi aminyene aminyene ayaqhekeka, ama-rut, noma enze i-oxidize ngaphambi kwesikhathi. I-SMA iletha lokho lezo zingxube ezingakwazi ukukuletha: uhlaka lwamathambo amatshe axhumene, i-bitumen eshintshiwe nge-polymer, kanye ne-cellulose noma isigcwalisi samaminerali ukuze sikhiye yonke indawo. Kodwa akukho lutho olubalulekile uma wakho isitshalo se-asphalt SMA ikhono liyancipha.

Sikubone esizeni: idizayini yenhlanganisela ye-SMA egunyazwe ilebhu, nokho yenqatshwa kumphevi ngenxa yokuqukethwe okuhlanganisayo okungahambisani noma ukuhlukaniswa okuhlanganisiwe. Imbangela yayingeyona iresiphi—kwakuyisitshalo. I-SMA idinga ukulawulwa okuqinile kwezinga lokushisa (±2°C), umthamo wokugcwalisa onembile (±0.3% ngobuningi), amajoyinti aqandayo abandayo emjikelezweni wokuxuba, kanye ne-homogenization egcwele phakathi kwamasekhondi angu-45—hhayi ama-90. Izitshalo ezijwayelekile zogubhu ziyazabalaza. Izitshalo ze-Counterflow zivame ukushisa i-binder. Futhi amasistimu ohlobo lwe-batch angenayo imizila ye-double-metering yokugcwalisa nebitumen awakwazi ukushaya ukuphindaphinda.

Izitshalo zokuhlanganisa itiyela zeZibo Jixiang Machinery zihlangana ngqo ne-SMA—hhayi njengokucatshangelwa kwamuva, kodwa njengomsebenzi wokuklama. Uchungechunge lwabo lwe-SjABP luhlanganisa izinketho ezintathu zobunjiniyela okungaxoxiswana ngazo: Okokuqala, isiphakeli se-volumetric esinembayo esiphezulu esinesango elilawulwa yi-servo kanye nempendulo ye-gravimetric yesikhathi sangempela—azikho izikali zebhande, azikho ukukhukhuleka. Okwesibili, isistimu yokulethwa kwebitumen enamapayipi amabili: umugqa owodwa we-base binder, owodwa wokuphakelayo okushisayo okulungiswe nge-polymer, ngamunye unokuqapha okuzimele kwezinga lokushisa kanye nokulinganisa ukugeleza. Okwesithathu, i-double-shaft paddle mixer enesivinini esishintshayo sokuzungezisa kanye nama-blade ahlukene—eklanyelwe ukuhlanganisa yonke izinhlayiya ezimahhadla ngaphandle kokugcotshwa kwe-smearing noma amaketanga e-polymer alulazayo.

Ukuthunyelwa komhlaba wangempela kuyakuqinisekisa. Ekuthuthukisweni komgwaqo onguthelawayeka wango-2023 eSifundazweni SaseQuang Nam eVietnam, iklayenti lasuka esitshalweni esijwayelekile semigqomo yaseYurophu laya kuyunithi yenqwaba ye-Zibo Jixiang's SjABP-160. Ukukhiqizwa kwe-SMA kweqe kusuka ku-72% ku-spec batches (nge-EN 13108-5) kuya ku-98.6%. Kungani? Hhayi nje ihadiwe—i-logic yokulawula ibalulekile. Isixhumi esibonakalayo se-PLC sikhiya amapharamitha angukhiye: ukungezwa kwesigcwalisi kufanele kwenzeke *ngemuva* kokushisisa okomile kodwa *ngaphambi* komjovo webitumen; isikhathi sokuxuba sisethwa kabusha kuphela uma zonke izinzwa ziqinisekisa izinga lokushisa eliqondiwe kanye nomthwalo wetorque. Akukho ukukhipha komsebenzisi okuvunyelwe. Ususa kanjalo amaphutha aguquguqukayo abantu ku-SMA.

Abanye bangase baphikise ngokuthi izitshalo ze-modular zidela ukuqina ngenxa yesivinini. Baqinisile—uma ifreyimu ingakhelwanga ukulayisha okuguquguqukayo. I-Zibo Jixiang isebenzisa i-laser-cut, insimbi yesakhiwo ekhulula ingcindezi embhoshongweni wayo oyinhloko. Ijoyinti ngalinye li-CNC-drilled and bolted-not welded in field-ukuze kulondolozwe ukubekezelelana kokuqondanisa ngaphansi kokunwetshwa kwe-thermal. Silinganise ukuchezuka okuqondile ku-SjABP-120 phakathi nokugijima kwe-SMA yamahora angu-12: 0.8 mm ezingeni lokushisa eliphakeme (175°C), ngaphansi kakhulu komkhawulo ongu-2.5 mm ISO 50001 wokuhlanganisa ukufana. Lokho kuzinza kuhumusha ngokuqondile amanani e-voids-in-mineral-aggregate (VMA) angashintshi—okubalulekile ukuqina kwe-SMA.

Izindleko azikona nje inani lesitika. Ithani le-SMA elingahluziwe libiza ngaphezu kokusebenza kabusha—lidala ukubambezeleka, umonakalo osuliwe, kanye nengozi yesithunzi. Izitshalo zikaZibo Jixiang zisika imfucuza ngedizayini: uhlelo lwazo lokubuyisela uthuli oluvaliwe luthatha futhi >92% wenhlawulo yokugcwalisa, iphinde iwafake ku-dosing hopper. Ukulawula kwabo kokushisa kulungisa isilinganiso se-air-fuel ngesikhathi sangempela ngokusekelwe ekufundeni kwe-flue gas O₂-ukunciphisa ukusetshenziswa kukaphethiloli ngo-11% uma kuqhathaniswa nezinhlelo zesilinganiso esingaguquki ngaphandle kokudela izinga lokushisa. Futhi ngenxa yokuthi zonke izinhlelo ezingaphansi ezibucayi—amamitha, ukudlulisa, ukuxuba—zakhiwe endlini, izingxenye ezisele zifika ngezinsuku eziyi-12, hhayi amasonto ayi-12. Iklayenti elilodwa eKazakhstan libike isikhathi sokuphumula esingu-94% phakathi nezinyanga eziyi-18 kumashifu e-SMA, ngokuvalwa okungahleliwe okungahleliwe okungaphezu kwemizuzu engama-47.

Ukukhetha i isitshalo se-asphalt SMA Isixazululo sisho ukukhetha lapho ukuvumelana kuphelela khona. Awuhwebi ukuvumelana ngesivinini. Awemukeli "ukuvala ngokwanele" ku-VFA noma i-draindown. Wakha ingqalasizinda ehlala njalo—hhayi nje ehlangabezana ne-spec, kodwa idlule okulindelekile ngaphansi kwemithwalo yangempela. I-Zibo Jixiang Machinery ayithengisi izitshalo ze-asphalt. Ziletha ukusetshenziswa okuphindaphindiwe kwe-SMA—okulinganiselwe, kwaqinisekiswa, futhi kulungele iminyaka engu-20 elandelayo yethrafikhi.