Yuav ua li cas RAP Recycling Kub Asphalt Mixing Plant Solutions thiaj li txo tau cov nqi yam tsis txo qhov zoo?

Vim li cas kev lag luam thiaj li nrov txog RAP-Infused Asphalt

Yog tias koj tau mus rau ib qho kev nthuav qhia kev lag luam tsis ntev los no—bauma, CONEXPO, lossis Lub Ntiaj Teb ntawm Asphalt—tej zaum koj tau hnov ​​​​​​cov neeg cog lus hais txog cov lus " rap rov ua dua cov tshuaj asphalt kub sib tov cog " zoo li nws yog cov mov ci tom ntej. Thiab qhov tseeb? Qhov kev hype yog qhov tseeb. Los ntawm kev pub cov khoom qub ntawm txoj kev qub rov qab rau hauv lub nruas kub heev, cov neeg tsim khoom tab tom txiav cov nqi raw khoom los ntawm txog li 35%. Tab sis ntawm no yog qhov kicker: tsis yog txhua lub nroj tsuag npaj txhij los haus 40% RAP yam tsis tau hloov nws cov khoom sib tov mus rau hauv crispy mess. Yog li, koj yuav ua li cas kom tau nyiaj ntawm cov nyiaj txuag yam tsis saib xyuas koj cov ntsuas zoo? Cia peb khawb rau hauv.

Kev Tshawb Fawb Tom Qab High-RAP Mixes

Cov Kev Siv Txoj Kev Asphalt Rov Qab Los (RAP) tsis yog "pob zeb dub xwb." Nws muaj cov bitumen laus, cov khoom siv mineral zoo, thiab cov pob zeb sib xyaw ua ke. Thaum koj muab cov khoom no rau hauv lub thoob 160 ° C ib txwm muaj, cov khoom siv qub yuav tawv, ua rau tawg ua ntej lub sijhawm. Cov kev daws teeb meem niaj hnub no daws qhov no los ntawm:

• Ua ntej cua sov RAP hauv ib lub chamber sib cais mus rau 110 °C, maj mam tso cov volatiles yam tsis muaj pa luam yeeb dawb rau hauv zej zog.
• Txhaj tshuaj me me rau cov tshuaj rejuvenator—feem ntau yog 0.3% ntawm qhov hnyav tag nrho—yog li ntawd cov bitumen laus rov qab tau ductility.
• Siv cov tshuab pugmills ob lub ncej uas txiav lub sijhawm nyob kom tsawg dua 30 vib nas this, tiv thaiv "pa luam yeeb xiav" uas ua rau EPA tsis txaus siab.

Cov lus qhia tseem ceeb: koj tsis yog tsuas yog rov ua dua tshiab xwb; koj rov kho dua qhov rheology ntawm cov binder kom cov khoom sib xyaw ua haujlwm zoo li qub, lossis zoo dua.

Kev Txhim Kho Khoom Siv Uas Them Rau Lawv Tus Kheej Hauv 18 Lub Hlis

1. Cov Nruas Qhuav Uas Muaj Kev Sib Npaug

Cov nruas uas tig rov qab tau kav lub khw tau ntau xyoo lawm, tab sis kev hloov mus rau qhov tsim uas tig mus rau ib qho kev tsim uas tig mus rau ib qho kev tsim uas ua rau muaj qhov nkag mus rau hauv RAP ntau dua—txog li 50%—yam tsis ua rau cov khoom siv raug cov pa roj kub hnyiab. Qhov tshwm sim? Kev oxidation tsawg dua, cov pa roj carbonyl qis dua, thiab qib nkag mus tom qab sib xyaw mos dua.

2. Siv Cov Siv Hnyav RAP Uas Hloov Tau Zaus

Qhov tseeb yog qhov tseem ceeb. Qhov yuam kev ±1% ntawm lub Hoobkas 200-ton-ib hnub sib npaug rau 2 tons ntawm cov ntawv pov tseg hauv ib lub lim tiam. Cov siv sia niaj hnub nrog VFDs ntaus ±0.2% kev kam rau siab, yog li koj cov khoom sib xyaw nyob hauv qhov spec thiab cov neeg soj ntsuam lub koom haum zoo siab.

3. Cov Siv Conveyor Uas Tiv Tau Kub

Cov siv sia qub yuav kub txog li 140 °C. Cov siv sia uas muaj Kevlar ua kom sov yuav kub txog li 180 °C, ua rau nws siv tau ntev dua 30% thiab txo lub sijhawm tsis ua haujlwm uas tsis tau npaj tseg. Yog lawm, lawv kim dua 20% ua ntej, tab sis koj yuav txuag tau peb qhov kev hloov siv sia hauv tsib xyoos.

Cov lej tiag tiag hauv ntiaj teb: Kev kawm txog rooj plaub los ntawm Texas DOT

Xyoo 2022, Austin Paving tau kho dua nws lub nruas xyoo 1970 nrog lub pob khoom siv sib tov asphalt kub rov ua dua tshiab: lub tshuab pub RAP 50-tuj, lub tshuab cua sov roj kub 12 MBtu/teev, thiab cov khoom siv rov ua dua tshiab. Tshaj 12 lub hlis:

• Feem pua ​​​​​​ntawm RAP tau dhia ntawm 15% mus rau 42%.
• Cov nqi tag nrho tau poob $ 2.8 lab rau txoj haujlwm 1.2 lab tonnes.
• Cov txiaj ntsig ntawm chav kuaj tau raws li Tex-206-F spec ntawm tensile strength ratio (>80%).
• Cov pa roj carbon tau poob qis 38%, tsim nyog rau $ 1.10 / ton se credit raws li Texas House Bill 2239.

Rov qab them rov qab? Kaum xya lub hlis, suav nrog cov nyiaj tau los poob los ntawm ob lub lis piam los nag. Tsis phem rau lub Hoobkas uas "tsis tuaj yeem tswj hwm RAP siab" rov qab rau xyoo 2019.

Cov Dab Neeg Feem Ntau - Thiab Vim Li Cas Lawv Thiaj Li Tsis Yog

Cuav 1: "Kev RAP Siab Txhais Tau Tias Lub Neej Qaug Zog Tsis Muaj Zog"

Xyoo 2021 txoj kev tshawb fawb ntawm NCAT qhia tau tias 40% RAP sib xyaw nrog 0.4% rejuvenator yeej virgin ntawm beam fatigue ntawm 200 micro-strain. Lub tswv yim yog xaiv cov rejuvenator zoo: roj aromatic rau qhov kub qis, maltene-based rau qhov kub siab.

Zaj Dab Neeg Thib 2: "Koj Cov Pa Tawm Yuav Nce Siab"

Nrog rau qhov kub qis RAP ua ntej cua sov, VOCs yeej poob 15% piv rau cov khoom sib xyaw ncaj nraim, vim tias koj hloov ib feem ntawm cov khoom sib txuas - uas nws cov khoom tsim tawm yog qhov ua rau muaj pa phem tiag tiag.

Cuav 3: "Koj Xav Tau Ib Lub Nroj Tsuag Tshiab"

Kev kho dua tshiab pib ntawm $ 350k, tsis yog daim ntawv nplaum $ 3 lab ntawm chav tsev ntsuab. Feem ntau lub xeev DOTs tso cai sib xyaw yog tias koj dhau qhov kev xeem sib npaug ntawm cov khoom qub, yog li koj tuaj yeem khaws koj cov silos thiab cov tsheb thauj khoom uas twb muaj lawm.

Daim Ntawv Teev Npe Sai: Qhia Txog Koj Lub Nroj Tsuag Tom Ntej

Ua ntej koj kos npe rau daim ntawv PO ntawd, nyeem cov npe no kom meej:

1. Lav RAP pub txog li 50% tsis muaj pa luam yeeb xiav.
2. Xav kom siv cov tshuaj ntxiv ob kab - tshuaj rejuvenator ntxiv rau cov kua tiv thaiv kab mob.
3. Xav tau cov ntsuas dej noo tiag tiag ntawm cov thoob khib nyiab txias; 5% dej noo hauv RAP sib npaug 30% roj hlawv ntau dua.
4. Thov kom muaj kev lav phib xaub ob xyoos rau cov khoom siv uas rhiab heev rau cua sov (qhov ntawd yog qhov uas cov neeg muag khoom zais cov nqi qis).
5. Xyuas kom tseeb tias lub tshuab ua haujlwm tsis siv neeg ntawm cov nroj tsuag qhia tawm daim pib uas sau cov feem pua ​​​​​​ntawm RAP - cov neeg tshuaj xyuas DOT nyiam cov kev taug qab uas tuaj yeem tshuaj xyuas tau.

Auj, thiab ntawm no yog ib qho lus qhia sab hauv: sib tham txog "kev ua tau zoo" uas khi qhov kev them nyiaj kawg rau kev ua tiav koj lub hom phiaj RAP rau 30 hnub sib law liag. Ntseeg kuv, nws ua rau OEM cov kws tshaj lij kev pabcuam nyob ntawm qhov chaw kom txog thaum cov lej hloov ntsuab.

Hloov Los Ntawm Pilot Mus Rau Kev Tsim Khoom Tag Nrho

Yog li koj tau khiav ib qho kev sim 200-tuj thiab koj cov cores zoo li peachy. Tam sim no ua li cas? Nce 10% txhua ob lub lis piam. Vim li cas ho qeeb? Koj xav kom koj cov neeg ua haujlwm hauv thaj teb pom qhov rutting thaum ntxov ua ntej nws dhau los ua qhov mob taub hau lav. Tsis tas li ntawd, tweak koj cov software QC kom cim txhua qhov poob ntawm cov asphalt zoo hauv qab 5.2%. Nws yog qhov mob thaum xub thawj, tab sis thaum lub algorithm kawm koj qhov kev hloov pauv RAP, cov lus ceeb toom poob rau ze li xoom. Thaum ntawd, koj tuaj yeem khav txog " rap recycling hot asphalt mixing plant solutions " ntawm koj lub tuam txhab blog yam tsis tau hla koj cov ntiv tes tom qab koj nraub qaum.

Yav Tom Ntej Kev Xav: AI, Carbon Credits, thiab Dhau Ntawm

Cov tuam txhab tshiab twb sim cov koob yees duab AI-vision uas nyeem RAP gradation hauv lub sijhawm tiag tiag, kho qhov cub tawg ntawm lub dav hlau. Lub caij no, Tebchaws Europe cov ETS carbon credits tab tom pauv ntawm € 90 / ton CO₂ - tig txhua 10% RAP nce mus rau kwv yees li $ 0.85 / ton them nyiaj. Yog tias cov neeg tsim cai lij choj hauv xeev lees txais cov nqi se zoo sib xws, qhov kev lag luam rau cov khoom sib xyaw siab RAP tuaj yeem ob npaug ib hmos. Cov lus hauv qab: cov nroj tsuag uas nqis peev hnub no yuav luam tawm cov npoo tag kis thaum cov neeg tshwj xeeb pib thov EPDs (Environmental Product Declarations) ntawm txhua daim ntawv twv.

Cov Lus Qhia Tseem Ceeb rau Cov Tswv Cog Qoob Loo thiab Cov Neeg Qhia Txog Cov Khoom

• RAP siab tsis yog kev twv txiaj; nws yog kev hloov kho uas tau xam ua ntej.
• Kev kho dua tshiab raug nqi 10-15% ntawm cov nroj tsuag tshiab thiab them rov qab hauv <2 xyoos.
• Kev tswj xyuas zoo yog tsav los ntawm cov ntaub ntawv - cov ntsuas dej noo, cov koob yees duab, thiab cov twj tso kua mis rejuvenator yog koj cov phooj ywg zoo tshaj plaws tshiab.
• Cov kev txhawb nqa los ntawm txoj cai lij choj tab tom nrawm dua; teeb tsa koj cov peev nyiaj nrog cov lej carbon-credit tam sim no.

Npaj txhij los siv txhua lub nyiaj ntawm koj lub tuj tom ntej thaum cov neeg sib tw tseem qw txog "RAP ntau dhau"? Hloov kho mus rau cov tshuaj sib xyaw asphalt kub uas tau lees paub thiab saib koj cov npoo - thiab koj qhov qhab nia kev ruaj khov - nce siab.