Kodi RAP Recycling Hot Mix Asphalt Plants Solutions Ingachepetse Bwanji Ndalama Popanda Kuwononga Ubwino?

Kodi mudayamba mwadzifunsapo chifukwa chake omanga misewu ena amapitilizabe kupambana ma bid pomwe mitengo ya zinthu ikukwera? Chinsinsi nthawi zambiri chimakhala mkati mwa njira zawo zobwezeretsanso zinthu za phula - ukadaulo womwe umabwezeretsa mpaka 60% ya phula yakale ndikuchepetsa ndalama zopangira zinthu zopangira pakati. Tiyeni tifufuze njira zenizeni zomwe zimasandutsa magawo a malo oimika magalimoto kukhala phindu. (Ndipo inde, tidzagwiritsanso ntchito njira imodzi yomwe ingakupulumutseni $0.40 yowonjezera pa tani.)

Kodi RAP Ndi Chiyani Kwenikweni, Ndipo N’chifukwa Chiyani Ndi Yofunika Kwambiri pa Kupanga HMA Kwamakono?

Pavement ya Asphalt Yobwezeretsedwa (RAP) si "yongopera" chabe; ndi chinthu chosavuta kugwiritsa ntchito. Tani iliyonse yomwe mumagwiritsanso ntchito imatanthauza kuti tani imodzi ya virgin aggregate ndi binder yomwe muyenera kugula ndi yochepa. Mu 2023, binder yamadzimadzi ya AC inali pafupifupi $650 pa tani imodzi yochepa ku US Gulf Coast. Sakanizani 30% RAP mu chisakanizo chanu ndipo mumachotsa pafupifupi $200 pa tani iliyonse ya phula yomalizidwa. Ndi masamu amenewo ngakhale akauntanti wanu adzakulipirani.

Kodi Mayankho a Zomera za Asphalt Zamakono Zobwezeretsanso Zinthu za RAP Zimagwira Ntchito Bwanji?

Mwina mwawonapo makina akale owumitsa ng'oma omwe amawotcha RAP ngati mkate wadzulo. Zomera zabwino kwambiri masiku ano zimagwiritsa ntchito majekete osinthira kutentha omwe amatsutsana ndi mpweya komanso kutulutsa chinyezi m'gawo la nthunzi . Kumasulira: RAP imatentha pang'onopang'ono, kotero kuti bitumen yotsalayo "siikalamba" kapena kusweka. Zotsatira zake? Kusakaniza komwe kumakwaniritsa ma volumetric a Superpave popanda vuto. Ma OEM ena amawonjezera ma pyrometer a infrared omwe amawerenga kutentha kwanthawi zonse, ndikusinthira zokha RAP feed kuti ikhale mkati mwa ±3 °C kuchokera ku cholinga. Zokongola kwambiri, eti?

Kukonzanso Zinthu Zazikulu Zomwe Zimalipira Zokha M'miyezi 18

• Ma conveyor a slat osinthasintha : Amachepetsa mphamvu ya horsepower ndi 25% ndipo amachepetsa kuwonongeka kwa RAP.
• Zolekanitsa mpweya wa venturi zomwe zimakhala ndi nthunzi yambiri : Chotsani 80% ya chinyezi RAP isanagunde ng'oma, zomwe zimathandiza kusunga mafuta ophikira.
• Pugmill yokhala ndi shaft ziwiri yokhala ndi masekondi 15 : Imachotsa utsi wabuluu ndikusunga anansi anu osangalala.

Kodi Mungathe Kupitilira 40% RAP Popanda Kuwononga Mphamvu Yotsika?

Yankho lalifupi: inde, koma muyenera kusewera ngati katswiri wa zamankhwala. Chogwirizira cha Soft-grade virgin (PG 58-28) kuphatikiza 0.3% Sasobit kapena chowonjezera chofanana ndi chotenthetsera chimachepetsa kalasi yogwira ntchito ya kutentha kwakukulu ndi sitepe imodzi yokha pomwe chikubwezeretsa kalasi yotsika ndi masitepe awiri. Woyeserera wa 2022 wa Illinois DOT pa I-72 adagwiritsa ntchito 45% RAP ndi njira yeniyeniyo ndipo adapambana TSR (tensile-strength ratio) pa 85%. Chifukwa chake, palibe zifukwa zina "sitingathe kupita pamwamba kuposa 25%", anthu inu.

Nanga Bwanji Zokhudza Mpweya Woipa? Kodi Oyang'anira Adzandiletsa?

Malire a EPA MACT a PM2.5 ndi 0.04 gr/dscf. Chomera chokhala ndi thumba losinthira kumbuyo ndi jakisoni wa laimu wouma chimagwera mosavuta pa 0.01 gr/dscf ngakhale kuchuluka kwa RAP kufika pa 50%. Langizo labwino: yesani mayeso a kotala nthawi yozizira—kuchuluka kwa mpweya wozizira kumatha kusokoneza kuwerenga, ndipo simukufuna kusokonezedwa ndi kusokonekera kwa mawonekedwe a kuwala nthawi yomweyo nyengo isanayambe.

ROI Yobisika: Zindapusa za Baghouse ngati Mineral Filler

M'malo modzaza zinyalala za fumbi, bweretsani 1–2% mu chisakanizocho. Ndi chodzaza chaulere chomwe chimawonjezera VMA ndi 0.5% ndipo chimakupatsani mwayi wochotsa fumbi la miyala yamtengo wapatali. Chomera chimodzi cha 200-tph chomwe tidachifufuza ku Georgia chinasunga $42 k pachaka pakusintha kumeneku. Sikuti ndi ndalama zambiri zosinthira, eti?

Momwe Mungatsimikizire Chomera Chanu M'tsogolo Kuti Chidzakhale ndi 60% RAP

Yambani ndi ng'oma yokhala ndi migolo iwiri yomwe imachotsa RAP kuchokera ku malo oyaka moto mwachindunji. Onjezani malo olowera a RAP osinthika - isunthireni pafupi kapena kutali ndi choyatsira moto kutengera chinyezi. Pomaliza, tchulani chodyetsa chobwezeretsanso chokhala ndi njira yoyezera kuti makina owongolera zomera athe kukonza zokha kusuntha kwa matani. Mayendedwe atatuwa akukonzerani chilichonse chomwe DOT ingakupatseni zaka khumi zikubwerazi.

Phunziro la Nkhani: 38-Mile State Highway ku Colorado

Pulojekitiyi inkafunika matani 110,000 a 12.5-mm SMA. Spec inachepetsa RAP pa 30%, koma kontrakitala anapereka mavoti pa 40% pogwiritsa ntchito njira yomwe ili pamwambapa. Ndalama zonse zomwe zasungidwa: $1.9 M. Kodi chiwopsezo ndi chiyani? Kugwira ntchito kwa msewu pambuyo pa nyengo ziwiri zozizira kwambiri kunapeza mavoti 92 pa PCR (chiwongola dzanja cha msewu) poyerekeza ndi 88 pa gawo lowongolera lomwe lili ndi kusakaniza kwa virgin. Ngakhale mainjiniya wa msewu m'boma anavomereza kuti, "Sitinaone zimenezo zikubwera."

Nthano Zofala Zatsutsidwa

Bodza: ​​"Kusakaniza kwa rap yapamwamba nthawi zonse kumakhala kolakwika."

Zoona zake: Kuyenda bwino kwa mtunda kumadalira kapangidwe kake, osati kuchuluka kwa RAP. Gwiritsani ntchito chiŵerengero cha CA/FA choyesedwa bwino pafupi ndi 0.45 ndipo mudzakhala bwino.

Bodza: ​​“RAP ili ndi ma hydrocarbon osadziwika omwe amanunkha.”

Inde, inde, ngati mugwiritsa ntchito burner yanu yokhala ndi mafuta ambiri komanso kutentha kwake kuli kumpoto kwa 340 °C. Sungani kutentha kwa burner pansi pa 160 °C ndipo fungo lichepa kufika pamlingo wa BBQ wa m'deralo.

Mndandanda Wofufuza Mwachangu Musanabwererenso

1. Onetsetsani kuti malo anu osungiramo zinthu amatha kuthana ndi kuchuluka kwa zinthu zokwana 10% (RAP ndi yofewa).
2. Sinthani ma trunnion; ng'oma za RAP zimayenda ndi katundu wolemera kwambiri.
3. Lankhulani ndi DOT yanu msanga—maboma ena akadali ndi malire a RAP pa 25% pa SMA, koma perekani chikhululukiro ngati muwonetsa deta ya labu.

Kodi mwakonzeka kufinya ndalama zonse zomaliza kuchokera ku njira zanu zobwezeretsanso zinthu za rap zosakaniza ndi asphalt? Yambani ndi choyezera chinyezi, onjezani VFD pa RAP feed, ndipo yang'anani momwe ndalama zanu zosungira zikuyendera ngati hockey-stick. Ndipo, ngati mukufuna kuphunzira zambiri za burner tuning kapena additive dosing, tiuzeni—mosangalala!