Kodi Ntchito za RAP Recycling Hot Mix Asphalt Plants Zimathandiza Bwanji Kuchepetsa Ndalama Popanda Kutaya Mtengo?

Kodi mudayamba mwadzifunsapo chifukwa chake makampani ambiri opanga zinthu zotsika mtengo (DOTs) ndi opanga zinthu zachinsinsi (private pavers) akufufuza pa Google kuti "ntchito zokonzanso zinthu zotentha za asphalt plants" nthawi ya 2 koloko m'mawa? Yankho lalifupi ndi losavuta: bajeti ikuchepa, mitengo yokhazikika ikukwera kwambiri, ndipo ziwerengero zokhazikika tsopano zasindikizidwa mu lipoti lililonse la pachaka. Yankho lalitali komanso losangalatsa kwambiri limabisika momwe mafakitale amakono amagwirira ntchito panjira yobwezeretsedwa ya asphalt (RAP) popanda kusintha ulendo wanu kukhala chikondwerero cha mabowo.

Choyamba, Kodi RAP Ndi Chiyani Kwenikweni?

RAP si "zinthu zakale zakuda" zomwe mungapange pamsewu waukulu. Ndi kusakaniza kolamulidwa bwino kwa chomangira cha phula chakale ndi zinthu zapamwamba zomwe zatsimikizira kale kuti zimatha kupulumuka zaka zambiri za magalimoto ndi kuzungulira kwa kuzizira. Akatswiri akamanena za ntchito zokonzanso zomera za phula zosakanikirana ndi rap, kwenikweni akulankhula za njira zosiyanasiyana—kugaya, kugawa magawo, kuyesa, kusakaniza, kutenthetsanso, ndi kuyala—zomwe zimapangitsa misewu yotayidwayi kukhala yamoyo wachiwiri. Chosangalatsa n'chakuti: msewu waukulu wa m'mizinda wokhala ndi njira zinayi umatha kubweretsa matani pafupifupi 18,000 a RAP. Ndi magalimoto pafupifupi 1,200 omwe akupempha mwayi wachiwiri.

N’chifukwa Chiyani Anthu Akuthamangira Mwadzidzidzi Kusakaniza 40%, 50%, Ngakhale 100% RAP?

Tiyeni tikambirane ziwerengero zomwe zimapangitsa oyang'anira zachuma kumwetulira. Virgin binder yokha imapanga mpaka 60% ya mtengo wa zinthu zosakaniza ndi phula. Sinthani 40% RAP ndipo mwachotsa pafupifupi 24% ya chinthucho musanabwerere ku paver yoyamba. Chitani zimenezo pa rehab ya matani 100,000 pakati pa maboma ndipo tikulankhula za ndalama zosungira kumpoto kwa madola miliyoni imodzi. Inde, ziwerengero zisanu ndi ziwiri.

Koma mtengo wake ndi theka la nkhani. Mabungwe tsopano amapeza anthu ofuna kugula zinthu chifukwa cha mpweya woipa, ndipo madera angapo—poyang'ana inu, Colorado ndi California—amapereka kuchepetsedwa kwa mitengo ya malonda mukafika pa zolinga zokhazikika. Mu Chingerezi chosavuta: bwezeretsanso zambiri, pambanani ntchito yambiri, ndikuwonjezera phindu lanu popanda kukulitsa pensulo yanu pazinthu zina zilizonse zomwe mukufuna kugula.

Mkati mwa Chomera: Momwe Ntchito za RAP Recycling Hot Mix Asphalt Plants Services Zimathandizira Kutulutsa Matsenga

1. Kuphwanya ndi Kuwunika Mwachangu kwa RAP

Zidutswa zosasinthika sizingadule. Mautumiki amakono amaphwanya RAP mpaka kufika pamlingo wokulirapo—nthawi zambiri 12.5 mm—kenako amaunika m'zigawo ziwiri kapena kuposerapo. Ma over amabwerera kuti akalandirenso; ma mids amatumiza malipoti ku zinyalala zozizira. Gawoli lokha limawonjezera nthawi yogwira ntchito ya chomera ndi 15% ndikuletsa madandaulo a "utsi wabuluu" ochokera kwa anansi.

2. Njira Zowumitsa Zoyendera Pamodzi ndi Zotsutsana ndi Kuyenda

Ma ng'oma akale oyenda mofanana amawotcha RAP kumapeto kwa chotenthetsera, zomwe zimapangitsa kuti chotenthetseracho chikhale chofewa komanso chopanda mphamvu. Zomera zatsopano zotsutsana ndi madzi zimabweretsa RAP pansi pa mtsinje, kutali ndi moto wopanda kanthu. Zotsatira zake: chotenthetsera chakale chimakhala chogwira ntchito, ndipo chotenthetsera chanu chobwezeretsanso chimasunga kukana kwa kutentha kochepa komwe mukufuna, mwachitsanzo, ku Minnesota February.

3. Jakisoni wa Virgin Binder “Rejuvenator”

Gawo labwino ndi ili: mainjiniya amaika jekeseni wamakina okonzanso zinthu—nthawi zina opangidwa ndi zinthu zachilengedwe, nthawi zina osakaniza mafuta onunkhira—pa 0.3% mpaka 0.6% potengera kulemera kwa kusakaniza. Mankhwalawa amakonzanso asphaltenes ndi maltenes, ndikubwezeretsa kusinthasintha kotero kusakaniza kobwezeretsedwanso ntchito kumakhala ngati njira yophikira 100%. Taganizirani izi ngati tsiku la spa la mamolekyulu a asphalt otopa.

4. Masensa a NIR ndi Gamma-Temperature a Nthawi Yeniyeni

Zomera zomwe zili ndi mchere tsopano zimayika ma scanner a near-infrared (NIR) pamwamba pa lamba ndi ma gamma detector mkati mwa ng'oma. Ma gizmos awa amawerenga kuchuluka kwa ma binder, chinyezi, ndi kutentha masekondi 30 aliwonse, ma feeder gets odzipangira okha ndi mafuta oyaka. Kumasulira: kusakaniza kokhazikika, katundu wochepa wokanidwa, komanso kuyimba foni kwa 3 koloko m'mawa kuchokera kwa manejala wa polojekiti wokwiya.

Chithunzi Chaching'ono cha Nkhani: Pennsylvania Turnpike 2022 Overlay

M'malo monyamula matani 62,000 a RAP kupita ku malo otayira zinyalala, bungwe loyendetsa zinyalala la turnpike linagwetsa, kubweza, ndikubwezeretsanso 94% yake mu chivundikiro chapamwamba kwambiri. Kampani yopereka chithandizo cha rap recycling hot mix asphalt plants inatsimikizira kuti idzakhala ndi moyo wotopa kwa zaka 12, koma mayeso oyambirira a rutting akuwonetsa kale kuti ikugwira ntchito mofanana ndi virgin SMA—pamtengo wotsika ndi 28%. Okhoma msonkho anasunga $3.4 miliyoni ndi matani 3,900 a CO₂. Sizoipa pantchito ya tsiku limodzi.

Koma Kodi Zosakaniza Zapamwamba za Rap Zidzakhala Zotani?

Kukayikira ndi kwabwino. Chofunika kwambiri ndi kapangidwe kosakaniza bwino: kukonza zinthu mwanzeru mofanana, kusakaniza bwino kwa ma binder, komanso kuwongolera bwino khalidwe. Mabokosi amenewo akasankhidwa, deta ya National Center for Asphalt Technology (NCAT) ikuwonetsa kuti 50% RAP mixes ingafanane ndi kukana kwa ma rut ndi kulekerera kusweka kwa ma virgin mixes. Kumasulira: msewu wanu sudzasweka chisankho chisanachitike.

Malangizo Atatu Ofulumira a QA kwa Ofotokozera

• Chiŵerengero cha fumbi la Cap RAP pa 1.6 kuti tipewe kusakaniza kolimba komwe kumasweka chifukwa cha kutentha.
• Kufunika kwa kalasi ya binder ya Demand virgin (monga, PG 64-22 mpaka PG 58-28) pamene RAP ikupitirira 30% m'njira za pamwamba.
• Limbikirani kuti mupeze deta yokhudzana ndi kukhuthala kwa magetsi yomwe yaperekedwa ndi kontrakitala ku Ninitial, Ndesign, ndi Nmax kuti mupeze zosakaniza zofewa msanga.

Kusankha Mnzanu Woyenera wa Rap Recycling Hot Mix Asphalt Plants Services

Si zovala zonse zokhala ndi zitini ziwiri zoziziritsa kukhosi zomwe zimatha kugwira ntchito bwino popanda kusintha chisakanizo chanu kukhala nyama yokazinga yabuluu. Yang'anani:

1. Mbiri Yotsimikizika: Funsani mapulojekiti am'mbuyomu a DOT okhala ndi ≥40% RAP. Ngati sangathe kuwonetsa deta ya QC yobwerera m'mbuyo zaka zisanu zapitazo, pitirizani kuyenda.
2. Zokolola Zogawika: Zomera zomwe zimasunga magawo atatu kapena kuposerapo a RAP zimakupatsani ulamuliro wolimba komanso volumetrics yabwino.
3. Dongosolo Lojambulira la Rejuvenator: Mapampu oyezera, zoyezera madzi, ndi matanki oyezera bwino zimatsimikizira kuti sizimangotaya mafuta otayira mu ng'oma.
4. Zilolezo Zachilengedwe: Zotenthetsera kutentha, mphete zojambulira utsi wabuluu, ndi zowunikira zowonekera nthawi yeniyeni zimakusungani kumbali yoyenera ya kuwunika kwa EPA.

Mfundo Yofunika Kwambiri: Kubwezeretsanso Ndalama za RAP Sikophweka—Ndi Thandizo la Ndalama

Pakati pa mitengo yamafuta yosakhazikika, kusowa kwa zinthu zonse, komanso malamulo okhwima okhudza chilengedwe, makontrakitala omwe amanyalanyaza ntchito zobwezeretsanso zinthu za rap ku malo opangira phula okhala ndi phula losakanikirana ndi phula akupatsa antchito atsopano ntchito ina kwa opikisana nawo anzeru. Ndiye, kodi mwakonzeka kutsimikizira zomwe mukufuna mtsogolo? Pezani wopanga wanu wosakaniza pafoni, funsani omwe angakhale nawo pamakampani omwe ali pamwambapa, ndikuwona phindu lanu pa tani imodzi pamene kuchuluka kwa mpweya m'mafakitale anu kukutsika. Ndipo nthawi ina wina akakuuzani kuti phula losinthidwanso ndi "mtengo wachiwiri," ingomwetulirani ndikuwawonetsa manambala a Pennsylvania Turnpike. Nthawi zambiri zimenezo zimawatseka mwachangu.