Litšebeletso tsa RAP Recycling Hot Mix Asphalt Plants li Fokotsa Litšenyehelo Joang Ntle le ho Tela Boleng?

Na o kile wa ipotsa hore na ke hobaneng ha DOT tse ngata le batho ba palamang diphaephe tsa poraefete ba ntse ba sheba "ditshebeletso tsa ho ntjhafatsa dimela tsa asphalt tse nang le motsoako o chesang wa rap" ho Google ka hora ya bobedi hoseng? Karabo e kgutshwane e bonolo: ditekanyetso di a fokotseha, ditheko tse sa tswa tshwarwang di a phahama haholo, mme dipalo tsa botsitso jwale di hatiswa tlalehong e nngwe le e nngwe ya selemo. Karabo e telele—le e kgahlehang haholo—e patilwe ke tsela eo dimela tsa sejwalejwale di sebetsanang le tsela eo asphalt palament e ntjhafaditsweng (RAP) ntle le ho fetola leeto la hao le boreleli hore e be mokete o nang le dikoti.

Taba ea pele, Ke eng e baloang e le RAP hantle?

RAP ha se feela "lintho tse ntšo tsa khale" tseo u li tlolang tseleng e kholo. Ke motsoako o laoloang ka thata oa sekontiri se tsofetseng sa asphalt le li-aggregate tsa boleng bo holimo tse seng li pakile hore li ka phela lilemo tsa sephethephethe le lipotoloho tsa ho qhibilihisa. Ha borakonteraka ba bua ka lits'ebeletso tsa rap tsa ho sebelisa hape limela tsa asphalt tse nang le motsoako o chesang, ba hlile ba bua ka letoto la lits'ebetso - ho sila, ho arola, ho leka, ho kopanya, ho futhumatsa bocha, le ho beha fatše - tse fang litsela tsena tse lahliloeng bophelo ba bobeli. 'Nete e monate: maele e le 'ngoe ea tsela e kholo ea litoropo e nang le mela e mene e ka ja lithane tse ka bang 18,000 tsa RAP. Ke literaka tse ka bang 1,200 tse tletseng thepa tse kopang monyetla oa bobeli.

Hobaneng ho Lebelo la Tšohanyetso ho Leba ho 40%, 50%, Esita le 100% RAP Mixes?

Ha re bueng ka lipalo tse etsang hore batsamaisi ba lichelete ba bososele. Virgin binder feela e ikarabella ho fihlela ho 60% ea litšenyehelo tsa thepa ea motsoako oa asphalt. Fetola RAP ea 40% 'me u hlakotse hoo e ka bang 24% ea ntho eo pele teraka ea pele e khutlela ho paver. Etsa joalo ho rehab ea lithane tse 100,000 tsa interstate 'me re bua ka poloko ea liranta tse limilione tse le' ngoe ka leboea. E, lipalo tse supileng.

Empa litšenyehelo ke halofo feela ea pale. Li-agency joale li fumana bafani ba theko ka lebaka la khabone e feteletseng, 'me linaha tse' maloa - ha li sheba uena, Colorado le California - li fana ka litheolelo tsa theko ea theko ha u fihla lipheong tsa botsitso. Ka Senyesemane se bonolo: sebelisa hape ho feta, hapa mosebetsi o mongata, 'me u nontše phaello ea hau ntle le ho ntlafatsa pentšele ea hau nthong e 'ngoe le e' ngoe ea theko.

Ka Hare ho Semela: Kamoo Litšebeletso tsa Limela tsa Asphalt tsa RAP tse Nchafatsang Motsoako o Chesang li Hlahisang Boselamose ba RAP

1. Ho Sila le ho Hlahloba ka ho Nepahetseng RAP

Likotoana tse sa reroang li ke ke tsa e khaola. Litšebeletso tsa sejoale-joale li senya RAP ho fihlela li-specification tse tiileng tsa boholo bo holimo—hangata ½ in. (12.5 mm)—ebe li e hlahloba bonyane likaroloana tse peli. Li-over lia khutla bakeng sa ho feta hape; li-mids li tlaleha lijaneng tsa ho fepa tse batang. Mohato ona feela o eketsa nako ea ho sebetsa ha semela ka 15% mme o thibela litletlebo tsa "mosi o moputsoa" ho tsoa ho baahelani.

2. Mekhoa ea ho Omisa Phallo e Tsamaellanang le Phallo e Bapileng le ea ho E Thibela Phallo

Meropa ea khale e tsamaeang ka tsela e tšoanang e chesa RAP qetellong ea secheso, e etsa hore binder e be oxidize 'me e etse hore motsoako o pshatlehe habonolo. Limela tsa moloko o mocha tse khahlanong le phallo li kenya RAP tlase, hole le lelakabe le hlobotseng. Sephetho: binder e tsofetseng e lula e sebetsa, 'me motsoako oa hau o sebelisitsoeng hape o boloka khanyetso ea ho petsoha mochesong o tlase oo u o hlokang, mohlala, Minnesota Hlakola.

3. Liente tsa "Rejuvenator" tsa Virgin Binder

Karolo e ntle ke ena: baenjiniere ba kenya metsoako e entsoeng ka boenjiniere ea ho tsosolosa bocha—ka linako tse ling e thehiloeng linthong tse phelang, ka linako tse ling e le metsoako ea oli e nkhang hamonate—ka 0.3% ho isa ho 0.6% ka boima ba motsoako. Lik'hemik'hale tsena li leka-lekanya li-asphaltene le li-maltene, li tsosolosa ho se sebetse hantle kahoo motsoako o sebelisitsoeng hape o sebetsa joalo ka risepe ea 100% e sa tsoa khuoa. Nahana ka eona e le letsatsi la spa bakeng sa limolek'hule tsa asphalt tse khathetseng.

4. Li-sensor tsa NIR le Gamma-Thempereichara tsa Nako ea Sebele

Dimela tse nang le boleng ba tsona jwale di kenya disekenara tse haufi le infrared (NIR) ka hodima lebanta le di-gamma detectors ka hara teramo. Di-gizmo tsena di bala diteng tsa di-binder, mongobo le mocheso metsotswaneng e meng le e meng e 30, diheke tsa feeder tse iketsang le mafura a burner. Phetolelo: motswako o tsitsitseng, meroalo e fokolang e hanetsweng, le mohala o sa amohelweng ka hora ya boraro hoseng ho tswa ho mookamedi wa projeke ya halefileng.

Setšoantšo se Sekhutšoanyane sa Nyeoe: Pennsylvania Turnpike 2022 Overlay

Ho ena le ho palama lithane tse 62,000 tsa RAP ka literaka ho ea lithōleng, balaoli ba turnpike ba ile ba sila, ba hula, 'me ba sebelisa 94% ea eona ka har'a modulus e phahameng. Mofani oa litšebeletso tsa lifeme tsa asphalt tse sebelisang rap hape o tiisitse bophelo ba mokhathala ba lilemo tse 12, empa liteko tsa pele tsa ho sesa li se li ntse li bontša ts'ebetso e lekanang le ea virgin SMA - ka theko e tlase ea yuniti ea 28%. Balefi ba lekhetho ba bolokile $3.4 milione le lithane tse 3,900 tsa CO₂. Ha se ntho e mpe bakeng sa mosebetsi oa letsatsi.

Empa Na Metswako e Meholo ea RAP e Tla Tšoarella?

Ho belaela ho phetse hantle. Ntho ea bohlokoa ke moralo o leka-lekaneng oa motsoako: ts'ebetso e bohlale ea likarolo tse lekanang, ho kopanya li-binder ka nepo, le taolo e tiileng ea boleng. Ha mabokose ao a hlahlojoa, lintlha tsa morao-rao tsa Setsi sa Naha sa Theknoloji ea Asphalt (NCAT) li bontša hore metsoako ea RAP ea 50% e ka lekana le ho hanyetsa li-rut le mamello ea ho petsoha ha metsoako e sa tsoakoang. Phetolelo: tsela ea hau e ke ke ea qhalana pele ho potoloho e latelang ea likhetho.

Malebela a Mararo a Potlakileng a QA bakeng sa Litlhaloso

• Sekhahla sa lerōle la RAP se ka holimo ho 1.6 ho qoba metsoako e thata e petsohang tlas'a khatello ea mocheso.
• Tlhoko ea sehlopha sa demand virgin binder (mohlala, PG 64-22 ho isa ho PG 58-28) ha RAP e feta 30% libakeng tsa bokaholimo.
• Tsitlella ho fumana tlhahisoleseding ea ho teteana ha gyratory e fanoeng ke rakonteraka ho Ninitial, Ndesign, le Nmax ho tšoara metsoako e bonolo esale pele.

Ho Khetha Molekane ea Nepahetseng oa Litšebeletso tsa Limela tsa Asphalt Recycling ea Rap e Nchafalitsoeng

Hase liaparo tsohle tse nang le linkho tse 'maloa tsa lijo tse batang tse ka sebetsanang le 50% RAP ntle le ho fetola motsoako oa hau hore e be barbecue e monate e nang le mosi o moputsoa. ​​Batla:

1. Rekoto e Pakiloeng: Botsa merero ea DOT e fetileng ka ≥40% RAP. Haeba ba sa khone ho bontša lintlha tsa QC tse khutlelang morao lilemong tse hlano tse fetileng, tsoela pele ho tsamaea.
2. Dipokello tse arotsweng: Dimela tse bolokang dikarolwana tse tharo kapa ho feta tsa RAP di o fa taolo e tiileng le di-volumetric tse betere.
3. Sistimi ea ho Enta ea Rejuvenator: Lipompo tse lekantsoeng, li-flow metres, le litanka tse leka-lekaneng li paka hore ha li lahle oli e litšila ka har'a teramo feela.
4. Litumello tsa Tikoloho: Li-oxidizer tsa mocheso, masale a ho hapa mosi o moputsoa, ​​le li-monitor tsa opacity tsa nako ea sebele li u boloka u le ka lehlakoreng le letona la litlhahlobo tsa EPA.

Ntlha ea Bohlokoa: Ho Sebelisa Hape ha RAP Hase Nako e Fetileng—Ke Tšehetso ea Bophelo ba Lichelete

Pakeng tsa litheko tsa oli tse sa tsitsang, khaello e akaretsang, le melao e ntseng e tiea ea tikoloho, borakonteraka ba hlokomolohang lits'ebeletso tsa lifeme tsa asphalt tse sebelisang rap hape ba fana ka mosebetsi o latelang ho bahlolisani ba bohlale. Kahoo, u se u itokiselitse ho thibela tlhahiso ea hau e latelang nakong e tlang? Kopa moqapi oa hau oa motsoako fonong, botsa ka bokhutšoanyane balekane ba ka bang teng ba fekthering ka lethathamo le kaholimo, 'me u shebelle phaello ea hau ka tonne e nyoloha ha palo ea hau ea khabone e theoha. Oh, 'me nakong e tlang ha motho e mong a u joetsa hore asphalt e sebelisitsoeng hape ke "sekhahla sa bobeli," bososela feela 'me u ba bontše linomoro tsa Pennsylvania Turnpike. Hangata seo se ba khutsisa kapele haholo.