Ukubaluleka Kwesandla Kwe-Asphalt Nenkinga Yezibindi Ezizinzileyo

Umphathi osheshayo nendlela yokuhlaba: kungani asphalt ihlasela isibindi ngokushesha

Ukwakheka okuncane kwe-asphalt, okuhlanganisa isihlabathi, ama-agregate kanye ne-bitumen, kusebenza njengamaphepha okugaya amhlophe. Ama-hard-bond discs avamile abhekana nezinkinga lapho esebenza ezindaweni eziphakeme ngoba ukwakheka kwawo okuqinile akuqedi kalula. Lokhu kusho ukuthi amadayimane amasha awavezwa ngesikhathi esifanele phakathi nemisebenzi yokusika. Kwenzekani ngokulandelayo? Amadayimane athambekele ekubukeni, kuyilapho umsebenzi wokuchoboza ugcina ususa izinto zokubopha ngokushesha, okungabangela ukuba ukuphila kwe-blade kunciphe cishe ngesigamu uma kuqhathaniswa nalokho okungenzeka ngamathuluzi afanele. Ucwaningo luye lwabonisa ukuthi kunobudlelwano obuphambene phakathi kokuthi impahla iyashona kangakanani nokuthi hlobo luni lobunzima bokuxhuma olusebenza kangcono. Izibopho ezithambile empeleni zikhuthazela kangcono uma zibhekene nendlela ekhethekile ye-asphalt yokugqoka izinto ngokuvumelana nalezo zimiso zokuxhuma ezihlanganisiwe ebesikhuluma ngazo.

Kungani ama-hard bond ehluleka: ukugcinwa kwedayimane ngaphambi kwesikhathi nokungasebenzi kahle kokusika

I-asphalt ivame ukuba yinkinga kuma-hard bond discs ngoba i-matrix eqinile ibambelela kumadayimane isikhathi eside kakhulu. Lokhu kuholela ezinkingeni ezinjengokuqhekeka, ukushisa ngokweqile, nokusebenza kabi kokusika. Kwenzekani ngokulandelayo? Abasebenza emithonjeni ngokuvamile bacindezela phansi kanzima kunesidingo, okuyinto empeleni eyenza izinto zibe zimbi ngokuhamba kwesikhathi. Ingcindezi eyengeziwe isheshisa ukugqokwa kwesigaba futhi yakha inani eliyingozi lothuli lwe-silica ngesikhathi sokusebenza. Ngakolunye uhlangothi, izibopho ezithambile zisebenza ngendlela ehlukile. Lezi zinto ziwohloka ngokushesha, okuvumela amadayimane amadala ukuba awe bese kuba khona amatshe amasha. Lapho lokhu kwenzeka njalo phezu kwediski, sibona cishe ukuthuthuka kwesithathu kwejubane lokusika lapho sisebenza ne-asphalt ehlanganisiwe ngokwezinye izifundo zakamuva ezivela ku-NCHRP ngo-2023. Ukuze uthole imiphumela emihle kakhulu ochwepheshe abaningi batusa ukusebenzisa ama-matrix acebile ngethusi esikhundleni sezinto eziyinkimbinkimbi ze-tungsten. I-Bronze inikeza indawo enhle phakathi kokuqina okuhlala njalo nokukhishwa kwamadayimane ngesikhathi esifanele ngaphandle kokuphazamisa ukusebenza kahle.

Indlela Izibopho Ezithambile Ezenza Ngayo Ukuba Amadayimane Atholwe Ngokuphephile

Ukulinganisela kokugqwala: ukufanisa izinga lokugqwala kwe-bond nezinga lokugqwala kwedayimane

Ukuthola imiphumela emihle lapho usika i-asphalt kuxhomeke ekutholeni ukulinganisela okufanele phakathi kwezinto. Izinto ezihlanganisayo kudingeka ziguge ngesivinini esifanele ukuze zikhiphe amadayimane amadala futhi ziveze amasha lapho kudingeka. Akusona isikhathi esisheshayo, akukhona isikhathi esiphelelwe isikhathi. Izinto zokubopha ezithambile zisebenza kangcono ngoba ziyaphela ngokushesha lapho amadayimane eguga. Lokhu kusiza ekugwemeni izinkinga ezinjengokucwebezela okwenzeka lapho amadayimane ehlala isikhathi eside kakhulu, noma ukungazinzi okubangelwa ukuveza amadayimane amaningi kakhulu ngasikhathi sinye. Njengoba i-asphalt inzima kakhulu emishini, abakhiqizi kudingeka baklame lezi zindlela zokunamathisela ngokukhethekile ukuze ziguge ngokushesha. Lokhu kuqinisekisa ukuthi idayimane ngalinye liwenza kahle umsebenzi walo ngaphambi kokuba lihlukane, kunokuchitha amandla ngokumelene namakristalu aphelelwe amandla noma asetshenziswe ngokweqile angasacutshuki kahle.

Ukuthembeka kwezenzo: ukukhupha okukhula ngakwa-37% ngezikhathazini ezingaphansi emthwethweni ongaphansi (NCHRP Report 852, 2023)

Izivikeli zomhlaba ziqinisekisa ukuthi izikhathazini ezingaphansi zabelana nokhethekayo kwezenzo:

Umbhalo: NCHRP Report 852, 2023 ukuchaza ukukhupha kwemthwethwe engaphansi

Ingenye yobuchule yokuba ngu-37% iyisiphumo esingqayizivele sokubonakala kwebhamu. Noma kunjalo izibindi ezincane zibangela ubude obuncane bezixhaphakathi ngama-12% emavikeleni, isiphumo sobunzima sibenza kube khetha okufanamnyama kumsebenzi omkhulu—lapho izimali ezitholakalayo ziqukethe kahle izinkinga ezincane zabudura.

Ukuphatha Isintu Nokuhamba Kwesilulu Kusuka Kwezimali Ngokugcina

Isilulu se-asphalt njengento ethuthelana: isiphazimulo esibuyisa izulu koma yindlela yokhazima

Xa ucubungula ngasphalt, amanzi afakwa ngezilingo akhona into eyodwa engaphambene. Kuqala, lesi silulu sisebenza kahle njengesiphazimulo nesiphazimulo esibuyisa izulu, libuyisa izigaba zemipumuzo ngaphezu kuka-40% ikusukela xa ucubungula ngaphandle kwamanzi. Lokhu kusiza ukulindela i-diamonds ukuba ziyashisa ku-graphite futhi kulindela umphathi phakathi kwazo. Kodwa izinto ziyishintsha xa lezilingo ziya kuhlaba kulesilulu bese ziya kugcwala khona. Ngokushesha, okwasekusebenza kakhulu kuyashintsha ukuba kubi. Umunye uthinta ukuthi kwenza into eyayikhazima kakhulu emgcineni kophawu. Lomthelela ubonakala kakhulu kuma-disc anezinkinga ezinzima ngoba inkathalo enezinkinga eziphansi iyahlaba i-diamonds ezigodini, kuyikhipha ukuthi izihlangothi ezisha zokucubungula zenzeke kahle.

Ngokwesicelo sezifundo, le ndima yamabili ishisa izisebenzisi ngemikhawulo ethintekayo apho bayashisa kakhulu futhi baphazamisa indawo kabusha, okusiva ukulahlekelwa kwesikhathi esizimeleyo sokusebenza ngaproximately 15%. Isisindo sitholakala ngokusebenzisa amakhemikhali athandekileyo. Lezi zakhemikhali aziphazamisa ngokushesha okufanele ukuze kuvuleke amadhamini ngendlela efanele ngenkathi kuyasebentisa i-slurry. Lokhu kuvumela ukuthi ukulahlala kube lula ngaphandle kokuthi kube khona lezi zinkinga ezibangisa zokugaya okungavunyelwa. Kutheni okusabalalisa? Iziphazamo zokugcina zilindile kahle nangenkathi konke kucashiwe i-slurry, okuqukethwe kakhulu emsebenzini.

Ukususa Inkohlaka Yobuchwepheshe Bokudansela Emsebenzini

Kusukela kuqala, kusho ukuthi kuyinto engavamile ukusebenzisa izixwayiso ezinzima kwenye into ethintangela kakhulu, kodwa lokhu kuyakwazi uma sibuka indlela okusebenziwe ngayo izinto ngexesha lekuthatha. Iziphazamiso azizange zihlule ngoba zinzima ngokwazo. Okuthiwa kuthetha yile nto: lezi ziphazamiso ezingcono azizange zihlale ziyashaywa kakade, okubangela izinkinga njenge- glazing phezu kwesahluko, ukwakhiwa kwezindleko eziningi, nezindlovu zithunyelwe phambi kokuxabeka kwazo. Ngokwemithombo yeNCHRP Report 852 yangiveli 2023, lokhu kungahlela inzuzo nge-37% xa kusebenziwa kumehluko yaself ephakeme. Ngakho ke abasebenzi basebenza ngempumelelo baya kusebenzisa leziphazamiso ezingcono. Bakhetha izo eziyashaywa ngendlela efana naleyo yaself, ukuze izindlovu zibe yinkululeko futhi zilawule izindleko. Ukufumana imiphumela emihle kuyaphila kakhulu ekwenzeni izinguquko ezincane eziningi. Ukulungisa izilimi zeRPM, ukulawula isivinini sokuthinta isahluko, nokunika umsila omubi othile konke okudingekayo kusenzo kuncike kakhulu ekupheleni kokuqhubeka ngokushaywa kwegama. Uma kwenziwa ngendlela efanelekileyo, ukuvikela ukushaywa akuyilinganiso elingaphansi. Kube yisisekelo sokufumana izicathulo ezifanayo, ukuzivikela kuzinkinga, nokuhlala khethekile emsebenzini.

Isikhombisi Sokuqala

Kungani okunzima kwezinqamulo kusebenza kahle kakhulu ekugcineni isithuthwane?

Izinqamulo ezinzima zihluka ngendlela etholakala ngenqubo yokuvala kwamadimanthe, esivumela ukubonakala kanye nokugcina kahle ngaphandle kwezinkinga zokugcina amadimanthe ngaphambi kokusemthethweni njengoba kuyasebenza izinqamulo ezingcono.

Yiziphi izintuntswana zokusebenzisa iziqhamo ezinzima ngaphezu kwezinqamulo ezingcono?

Iziqhamo ezinzima zinika usizo oluphakade ngama-37% ekukhuliseni isivinini somgcini emsithuthwane ngokubonakala kahle kwamandimane, nakuba kunezinkinga eziphansi ekuphileni kwesiqhamo, okusiva kuqukethe kube lunye ukuhlanjulwa kwezisebenza.

Ukuthi isithuthwane sasithuthwane sifaka kanjani umsebenzi wokugcina?

Ekiseleni, isithuthwane sasithuthwane sisebenza njengeyikholomthubi kanye nezibophezelo, kodwa ngexesha linokuzima kwaye linokongezela ukuhluka kwegciwo, ikakhulu emaqhamini angcono apho amandimane ayikwazi ukufikelela kakhona.

Ukusetyenziswa kwezinqamulo ezinzima kungabangela kuphucula kwezempilo ngexesha lokugcina?

Yebo, izinqamulo ezinzima zisivumela ukugcinwa kwezikhelo zesiqhamo kanye nokubonakala kwamadimanthe, zokuthula izinkinga eziphathelene nokunzima kakhulu kanye nedoti yesilika, ngoko kukhokelela kwiqiniso elinhlalo.