Zeziphi iintlobo zezityalo zokuxuba iAsphalt ezilungele iprojekthi yakho elandelayo?
Iinjineli kunye nabaphathi bokuthenga abavuki bephupha ngesityalo sokuxuba i-asphalt; kodwa xa iinkcukacha zokuhombisa zifika kwiidesika zabo, umbuzo ofanayo uyavela: “Zeziphi iintlobo zezityalo zokuxuba i-asphalt eziya kusigcina sikwibhajethi, sicwangcisiwe, kwaye singabi nangxaki nonjineli ohlala apho?” Impendulo ayifanelekanga konke konke. Ukusuka kwiindlela ezinkulu ukuya kwiindawo ezincinci zokwahlulahlula, umsebenzi ngamnye ufuna iresiphi eyahlukileyo kancinci, izinga lemveliso, kunye nomgangatho wokusingqongileyo. Apha ngezantsi kukho indlela evavanyiweyo yeentlobo eziphambili zezityalo zokuxuba i-asphalt, iindleko ezifihlakeleyo ezingakhange zikhankanywe ziincwadana, kunye namanqaku ezigqibo achaphazela uphando lukaGoogle olufana “neentlobo zezityalo zokuxuba i-asphalt” yonke imihla.
Kutheni eli shishini liqhubeka liyila kwakhona oomatshini abafanayo
Ngo-1970, isityalo esincinci sasinokukhupha i-80 tph size sibonakale simangalisa. Kwiminyaka engamashumi amahlanu ezayo, iindawo zemisebenzi zasezidolophini zifuna i-200 tph ngaphakathi kwindawo evalekileyo engenakukhutshwa komoya, ngelixa iindawo ezikude zisakholelwa kwii-40 tph drum mixers ezifunxa idizili. Iinkcukacha zikarhulumente, ii-polymer-modified binders, ii-warm-mix additives, kunye neepesenti ze-asphalt pavement (RAP) ezisetyenzisiweyo zihlala zitshintsha, ngoko ke abavelisi batshintsha ii-drum flights, ilaphu le-baghouse, kunye noyilo lwe-burner phantse kuyo yonke imijikelo yemveliso. Ngamafutshane, imakethi ayiceli imibala emitsha; icela amandla amatsha ngaphakathi kweentlobo zezityalo zokuxuba i-asphalt eziqhelekileyo.
Izityalo zeBatch Mix: Imela yoMkhosi waseSwitzerland
Izityalo zeBatch zisenazo iimarike zeenkcukacha eziphezulu. Yonke imizuzwana engama-45-60 "ibatch" iyalinganiswa, ixutywe, kwaye ikhutshwe ngokwahlukeneyo, nto leyo enika umqhubi ulawulo lotyando kwi-filler, binder, kunye ne-RAP ratios. Ii-DOT zeSizwe ziyawuthanda lo mbandela kuba zinokukrazula ilori yomxube ukuba ukuhluma kuyadlula. Ingxaki? Ubuninzi bokufuma, uthuli oluninzi, kunye—masibe nenyaniso—nezinye izinto ezihambayo ukuze kugcinwe umntwana. Ukuba incwadi yakho yeenkcukacha idwelisa i-polymer-modified PG 76-22, i-steel-slag aggregate, okanye i-40% RAP, isityalo sebatch sihlala siluhlobo lwesityalo sokuxuba i-asphalt esikhuselekileyo. Khumbula nje, ukhuseleko luza ngexabiso: izityalo ezingaphezulu kwe-160 tph zihlala zifuna iihektare ezingama-2.5 kunye ne-silo seetoni ezingama-63, ngoko ke jonga ukufumaneka komhlaba ngaphambi kokuba uthande incwadana ekhazimlayo.
Izityalo zeParallel-Flow Drum Mix: I-Old Faithful enamaqhinga ambalwa
Iidrama ezihamba ngendlela efanayo ziqhuba i-aggregate kunye negesi yokukhupha umoya kwicala elinye, ngoko ke ukufuma kuyakhawuleza kwaye ukusetyenziswa kwepetroli kuhlala kuphantsi—malunga ne-130 kg yepetroli enzima ngetoni nganye yomxube. Abakhi abafuna ubungakanani ngaphezu kobunzima basathanda olu hlobo lwesityalo sokuxuba i-asphalt kwiileya zesiseko okanye ze-binder. Isithende se-Achilles? Ukungacaci komsi kuyanyuka xa udlula i-25% ye-RAP, kwaye ezinye izithili ngoku zibonisa ukungacaci okungaphezulu kwe-20% kwiimvume zazo zokusingqongileyo. Ukuba usebenza kwindawo engeyiyo i-attachment, cwangcisa ukongeza inkqubo ye-injection yesibini okanye ukutshintshela kwi-counter-flow.
Izityalo zoMxube weDrum eziQhelekileyo: I-Quiet Achiever
Uyilo lokuhamba komoya oluchaseneyo lujika icala elijikelezileyo nxamnye nelangatye lesitshisi, lufaka indawo eshushu kakhulu emva kwendawo yokufaka ibitumen. Isiphumo: akukho msi uluhlaza okwesibhakabhaka, akukho oxidation incinci, kwaye iipesenti zeRAP zisemantla angama-40% ngaphandle kokuvalwa kwengxowa. Isohlwayo sepetroli sincinci—malunga ne-5% ngaphezulu xa kuthelekiswa nokuhamba komoya okulinganayo—kodwa indawo yokusingqongileyo oyifumanayo idla ngokunciphisa izinga lokutshisa elongezelelweyo. Xa amabhunga esixeko ecela “ukukhutshwa komoya okubonakalayo okuphantsi,” olu hlobo lwesityalo sokuxuba i-asphalt luphumelela ngokuthe cwaka nangona lubiza i-8% ngaphezulu kwi-capex.
Izityalo Ezixutyiweyo Eziqhubekayo: Umntwana Omtsha OkwiBloko?
Izityalo ezixutywa rhoqo zilinganisa ukutya okubandayo, zifake i-bitumen, kwaye zikhuphe umxube ngaphandle kokuma nge-pugmill okanye i-twin-shaft mixer. Azichanekanga njengezityalo ze-batch, kodwa zifikelela kwi-300 tph kwindawo encinci kunenkundla yetenisi. Zicinge njenge-hybrid phakathi kwedrama yendabuko kunye ne-soil-stabilizer. Isosi eyimfihlo kukubuyisela umswakama ngexesha langempela: Ii-NIR sensors zilungisa ukuhamba kwe-bitumen rhoqo emva kwemizuzwana eli-15. Nangona kunjalo, ezi ntlobo zezityalo ezixutywa yi-asphalt ziyasokola kwi-RAP eguquguqukayo kakhulu kuba ixesha lokuhlala lifutshane. Ukuba umthombo wakho ohlanganisiweyo uhambelana kwaye udinga i->250 tph kwindawo echanekileyo, jonga olu khetho ngononophelo.
Izityalo ezincinci nezihambayo: I-Life Raft ye-30-tph
Iingingqi ezikude ezilungisa imingxuma kwi-3 °C azidingi silo se-200 tph. Zifuna iyunithi enesikhongozeli esingama-20-ft enokukhwela kwitreyila enomda ophantsi kwaye ikhawuleze kwiiyure ezingama-48. Faka iintlobo zezityalo zokuxuba i-asphalt ezincinci: 10–40 tph, umthwalo odibeneyo we-180 kW, kunye nekhatriji yokubuyisela umphunga emgceni egcina umsi oluhlaza okwesibhakabhaka ungabonakali. Umgangatho wokuphuma? Kuyamangalisa ukuba uhlola i-RAP kwangaphambili nge-12 mm grizzly. Umda wokwenyani ngumthamo we-silo—ngokuqhelekileyo iitoni ezili-15—ngoko ke izinto zokuthutha iilori ziba yingxaki yakho yemihla ngemihla.
Izongezo zeNdalo ezitshintsha izibalo
Nokuba ukhetha luphi uhlobo lwesityalo sokuxuba i-asphalt, izinto ezimbini ezikwimigca ngoku zilawula ukubalwa kwe-ROI: ukukhutshwa komoya kunye nengxolo. I-venturi-rod wet scrubber inokunciphisa i-PM ukuya kwi-20 mg/m³, kodwa yongeza i-6 kWh/ton. Inkqubo yokutya ye-RAP ingonga i-$7 ngetoni nganye kwi-virgin binder, kodwa inokunyusa i-stack opacity. Ngaphambi kokuba utyikitye umyalelo wokuthenga, fanisa isityalo nge-EPA's AERMOD ukuze ufumane ukuphakama okuchanekileyo, uxinzelelo lwe-ambient, kunye nesantya somoya esiqhelekileyo; i-spreadsheet emangalisayo oyifumanayo ngentsimbi yesi-2 kusasa inokutshintsha inzuzo yonyaka ngamanani amathandathu.
Indlela yokuHlanganisa Uhlobo lwesityalo neSikali seprojekthi—Ukukhangela okuKhawulezayo
- Iipatchwork zesithili kunye nokunciphisa umbane: Isityalo esincinci esihambayo se-10–40 tph, ibhetshi okanye esiqhubekayo.
- I-State highway overlay ene-25% RAP: 120–160 tph counter-flow drum.
- Umsebenzi wasebusuku wasezidolophini ongenakukhutshwa komoya okubonakalayo: Isityalo se-batch esingu-160–240 tph esine-fiber filter kunye neefeni eziqhutywa yi-VFD.
- Ukwakhiwa ngokutsha kwendlela yeenqwelo moya kwisikhululo seenqwelo-moya: Isikhululo seenqwelo moya esingu-240 tph esineendawo zokugcina izinto ezishushu kunye ne-surge hopper yeetoni ezi-3 ukugcina iilori zihamba.
Iimpawu zexabiso Akukho mntu uprintayo kwiingcaphuno
Lindela i-$1.1–1.4 yezigidi kwisityalo sedrum esihamba ngesantya se-120 tph FOB Shanghai, kodwa yongeza i-22% kwizakhelo zesiseko ezichasene ne-seismic ukuba indawo yakho ikwindawo ye-seismic III. Isityalo se-160 tph esineebhini ezishushu ze-50-ton kunye nesikrini se-5-deck sixabisa i-$1.7 yezigidi, kodwa isiseko sentsimbi sodwa sinokutya enye i-$180 k xa sele uqwalasela amaxabiso e-rebar yasekuhlaleni. Ukuthunyelwa? Isikhongozeli se-HQ esingama-40-ft sinokuginya isityalo esincinci se-20 tph, kodwa usadinga ii-flat-racks ezintathu zetanki ye-bitumen ye-8-ton. Ngamafutshane, xa ujonga kwi-Google "iintlobo zezityalo ezixuba i-asphalt," jonga kwizinto ezongezelelweyo okanye umgca wakho we-contingency uya kukhala kamva.
Izinto ezibalulekileyo ezithathwa ngabaQikeleli abaxakekileyo
Ukuba akukho nto uyikhumbulayo, phawula ezi nyaniso zintathu:
- Ibhetshi ilingana nokuguquguquka; idrama ilingana nobungakanani beetoni; ukuqhubeka kwayo kufana nesantya kwindawo encinci.
- Iipesenti eziphezulu ze-RAP azisekho kuluhlu lwezinto ezifunwayo—zingumbandela wemvume kumazwe amaninzi.
- Uhlobo lwesityalo sokuxuba i-asphalt esingabizi kakhulu kwiphepha le-spec alufane lube lolona lungabizi kakhulu ukuba nalo xa sele kubalwe umswakama, amafutha kunye neekhredithi zokukhupha umbane.
Khetha isityalo esifanelana neenkcukacha zakho, kungekhona isimo sakho sengqondo, kwaye ixesha lokuhamba ngeenyawo liza kuphela ngaphambi kokuba kuqhambuke ikhephu lokuqala.
