Lub Hoobkas Sib Xyaws Asphalt Kub Rov Ua Dua Yuav Txo Tus Nqi Li Cas Yam Tsis Txo Qhov Zoo?
Vim Li Cas Cov Neeg Cog Lus Nug Txog Cov Chaw Sib Xyaws Ua Los Ntawm Asphalt Kub Rov Siv Dua
Yog tias koj tau mus koom kev nthuav qhia kev tsim kho txoj kev tsis ntev los no, tej zaum koj tau hnov lub suab nrov nrov nyob ib puag ncig lub Hoobkas sib tov asphalt kub . Txhua tus neeg tab tom tham txog nws - cov thawj coj project, DOT engineers, txawm tias cov neeg tsav tsheb thauj khoom uas tau hais tias tsuas yog cov khoom sib tov xwb. Tab sis ntawm no yog ib lab daus las lo lus nug: puas yog cov thev naus laus zis no puas tuaj yeem txiav cov peev nyiaj yam tsis hloov koj txoj kev mus rau hauv kev ua koob tsheej potholes? Cia peb khawb thiab nrhiav seb.
"Kev Siv Dua Kub" Hauv Lub Hoobkas Yog Dab Tsi Tiag?
Tsis txhob xav txog cov lus hais no ib pliag. Kev siv dua tshiab kub tsuas yog txhais tau tias rov ua kom sov asphalt pavement (RAP) thiab sib tov nrog cov pob zeb tshiab thiab bitumen hauv tib lub nruas . Lub khawv koob tshwm sim ntawm 150–160 °C, qhov twg cov binder qub rov ua kua thiab sib xyaw nrog cov khoom tshiab. Qhov tshwm sim? Kev sib tov uas ua haujlwm zoo li daim ntawv qhia tshiab tab sis muaj txog li 50% cov khoom siv rov ua dua tshiab. Zoo heev, huh?
Tus Qauv Sib Piv ntawm Cov Nyiaj Dollars thiab Cov Xees
Cia peb tham txog qaib ntxhw. Virgin binder nyob ib ncig ntawm $ 700 ib tuj hauv feem ntau ntawm cov chaw nres nkoj hauv Tebchaws Meskas. Hloov 40% ntawm qhov ntawd nrog RAP thiab koj tsuas yog txuag tau $ 280 rau txhua tuj ntawm binder . Ntawm 20 000-ton txoj haujlwm interstate, qhov ntawd yog $ 5.6 lab txo cov khoom kab . Txawm tias tom qab koj suav nrog lub zog ziab ntxiv thiab cov tshuaj rejuvenator ntau dua, koj tseem tab tom nrhiav kev txuag ob tus lej. Koj lub chaw haujlwm nyiaj txiag yuav hlub koj rau nws.
Puas Yog Qhov Zoo Tsis Zoo? Cov Ntaub Ntawv Hauv Chaw Kuaj Mob Hais Lus Nrov Dua Li Cov Lus Xaiv
Cov chaw kuaj DOT ywj pheej hauv Texas thiab Ontario tau khiav qhov kev sim rutting ntawm 50% RAP sib tov tsim nyob rau hauv lub chaw sib tov asphalt kub niaj hnub. Qhov ruaj khov dynamic rov qab los ntawm 3 200 cycles/mm , xis nyob saum 2 000 yam tsawg kawg nkaus. Ntawm kev puas tsuaj los ntawm dej noo, qhov piv tensile-strength clocked nyob rau ntawm92 % , ua tau raws li qhov xav tau 80%. Txhais lus: txoj kev taug kev kav ntev ib yam nkaus - qee zaum ntev dua - dua li cov kev uas tsis tau muaj dua tshiab .
Hloov Los Ntawm Kev Ua Ib Pawg Mus Rau Kev Rov Siv Dua: Muaj Dab Tsi Hloov Pauv Ntawm Qhov Chaw?
Ua ntej koj maj nrawm mus kho koj lub tsev ua khoom siv xyoo 1970, paub qhov no: koj yuav xav tau lub nruas sib luag lossis thaj chaw ziab ob sab kom tiv thaiv RAP ntawm nplaim taws ncaj qha. Koj tseem yuav ntxiv lub tshuab nqus tshuaj rejuvenator thiab lub thawv RAP txias-feed nrog cov tsav hloov pauv zaus. Auj, thiab ib qho ntxiv - koj lub khoos phis tawj hauv lub Hoobkas yuav xav tau kev hloov kho software kom taug qab ntau thaj chaw kub ib zaug. Thaum cov kev hloov kho ntawd ua tiav, koj tuaj yeem hloov pauv ntawm cov khoom sib xyaw tshiab thiab cov khoom siv rov ua dua hauv qab 45 feeb.
Cov txiaj ntsig ib puag ncig uas ua rau cov neeg tswj hwm luag nyav
Txhua tuj ntawm RAP uas koj siv dua yuav tiv thaiv tau 0.45 t ntawm CO₂ tawm hauv huab cua—sib npaug li cog 20 tsob ntoo. Muab qhov ntawd ntxiv rau 3 lab tons ntawm RAP uas twb muaj lawm hauv Tebchaws Meskas thiab koj tab tom tham txog cov pa roj carbon ntawm lub nroog loj nruab nrab uas ploj mus ib hmos. Cov qhab nia LEED thiab cov lag luam carbon-credit tab tom pib muab nqi zog rau tus cwj pwm ntawd, yog li ntsuab tsis yog xim xwb—nws yog nyiaj ntsuab.
Cov Dab Neeg Ib Txwm Muaj, Raug Tshem Tawm
Cuav 1: "RAP tsuas yog cov khoom dub loj loj uas ua rau qhov sib xyaw tsis muaj zog."
Qhov Tseeb: Nrog rau kev faib ua feem kom raug thiab kev kho cua sov superheated , RAP yog sib xws li cov pob zeb tshiab.
Cuav 2: "Koj tsis tuaj yeem ua si RAP ntau tshaj 25% hauv cov kev sib tw khiav saum npoo av."
Qhov Tseeb: Missouri DOT nyuam qhuav muab 50% RAP SMA nto rau ntawm I-35 hauv xyoo 2022—tsis muaj kev tawg tom qab ob lub caij ntuj no.
Daim Ntawv Teev Cov Khoom Siv Sai Sai Rau Cov Neeg Yuav Khoom Thawj Zaug
- Xav tau qhov pub RAP hloov pauv ceev kom ua tiav qhov tseeb ± 1%.
- Siv cov ntsuas kub infrared rau ntawm lub nruas kom tiv thaiv pa luam yeeb xiav.
- Thov kom muaj lub tshuab hloov cua sov uas ntxuav tau nws tus kheej kom koj thiaj li tsis tas yuav siv lub tshuab ntxhua khaub ncaws siab nce mus rau hauv tsev txhua lub lim tiam.
- Sib tham txog kab lus hloov kho software tsib xyoos ; thev naus laus zis txav mus sai hauv qhov niche no.
Kev Tiv Thaiv Yav Tom Ntej: Ua Npuas Ncauj Sov, Bio-Rejuvenators, thiab Dhau Ntawm
Cov kws tshawb fawb hauv Netherlands twb tau txhaj cov bitumen ua npuas sov ntawm 110 ° C, txiav lwm 12% zog. Lub caij no, cov tshuaj rejuvenating ua los ntawm taum pauv tab tom hloov cov roj petroleum flux, thawb cov khoom siv rov ua dua tshiab mus rau70 % Cov neeg siv ua ntej uas xav tau lub tshuab sib tov ua los ntawm cov asphalt kub uas muaj cov qhov cub hluav taws xob modular yuav muaj peev xwm muab cov thev naus laus zis no tso rau hauv yam tsis tas yuav lub nruas tshiab. Xav txog nws ua lub zog rau koj lub peev nyiaj yav tom ntej.
Kab lus hauv qab: Puas yog qhov kev nqis peev tsim nyog rau xyoo 2024?
Muab cov lej ntawm lub Hoobkas 200-ton-ib-teev uas khiav 40% RAP. Koj yuav tau txais $ 1.2 lab pob khoom rov ua dua tshiab hauv 14 lub hlis ntawm tus nqi binder niaj hnub no. Xam cov carbon credits, cov nqi hloov chaw pov tseg, thiab lub halo kev lag luam ntawm "tus tsim kev ntsuab," thiab cov nyiaj rov qab poob qis dua ib xyoos . Yog li ntawd, qhov kev tshaj tawm yog qhov tseeb. Tsuas yog lo lus nug tseem tshuav yog: koj tuaj yeem rub lub pob sai npaum li cas?
