Ameriki sirako lasegincogo: FHWA sariyaw, RAP sɔrɔko, ani funankɛninw jɔyɔrɔ sugu la

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Zuwɛnkalo tile 10, san 2023

Ameriki ye diɲɛ kɔnɔ RAP ka fɛnw dilancogo cakɛda ye. Nin barokun in bɛ sɛgɛsɛgɛli kɛ cogo min na asfalt kurayali bɛ nafa don Ameriki sugu la ani jamana wɛrɛw ka feerekɛlaw bɛ se ka don cogo min na.

Ameriki ka RAP hakɛ: A ka bon diɲɛ kɔnɔ, nka baarakɛcogo hakɛ bɛ se ka bonya hali bi

Ameriki jamana de ye diɲɛ kɔnɔ RAP feereli cakɛda ye. Fɛdɛrali siraba ɲɛmɔgɔso (FHWA) ka fɔ la, Ameriki bɛ RAP tɔni miliyɔn 60 ɲɔgɔn bɔ san o san, o la 75% ɲɔgɔn bɛ segin ka kɛ fɛn wɛrɛ ye. O b’a to Ameriki bɛ kɛ diɲɛ kɔnɔ RAP dilanko ni a feerela ŋana ye. Nka, baarakɛcogo hakɛ bɛ se ka ɲɛtaa sɔrɔ hali bi — jamana caman na, RAP kɔnɔkow bɛ dan 20-30% ma, k’a sɔrɔ 60%+ bɛ se ka sɔrɔ fɛɛrɛko siratigɛ la. RAP kɔnɔfɛnw caya gɛlɛyabaw tɛ fɛɛrɛko ye nka sigida ni sɔrɔko ye : a fɔlɔ, fɛɛrɛko sariyaw tɛ bɛn jamanaw kɔnɔ, jamana dɔw ka sɔnni sariyaw RAP kɔnɔfɛnw na minnu ka bon, olu bɛ tugu RAP dɔgɔya bɛnkanw kɔ hali bi filanan, RAP sɔngɔko fɛɛrɛ dafabaliw — mara dɔw la, RAP sɔrɔli bɛ tɛmɛ sigida ɲinini kan ani sɔngɔw bɛ jigin a nɔnabila nafa jukɔrɔ ; sabanan, baarakɛlaw ka faratiw kɛlɛli — baarakɛcogo dannayabaliya min bɛ sɔrɔ RAP caman kɔnɔ, o bɛ baarakɛlaw bila ka dilancogo kɔrɔw fɛ.

FHWA sariyaw: Fɛɛrɛbɔ sira min bɛ kɛ ka ɲɛsin RAP caman kɔnɔkow ma

FHWA ye ‘Asphalt Rejuvenators for High-RAP Mixtures’ gafe bɔ (FA HWA-NHI-16-011) san 2019, min bɛ fɛɛrɛko labatoli sira jɛlen di RAP caman seginni na. Ladilikan jɔnjɔnw ye : fɔlɔ, denmisɛnninw ka jateminɛ ka kan ka kɛ baarakɛcogo kan sanni ka kɛ ka da a kɛcogo kan — ka sinsin bitumini doncogo kan kamalenninya kɔfɛ, a nɔgɔyali yɔrɔ, a ka ductility, ani a kɛcogo RTFOT kɔfɛ filanan, ka ladilikan di ko ‘tablo ɲagaminen’ fɛɛrɛw ka kan ka kɛ walasa ka bitumini kura ni bitumini seginlen ɲagaminen nɔ jateminɛ; sabanan, ka sɛgɛn ni funteni dɔgɔya baarakɛcogo sɛgɛsɛgɛli ladilikan di ɲagaminenw kan minnu bɛ segin ka kɛ fɛn wɛrɛw ye; naaninan, ka dusu don mɔgɔw kɔnɔ u ka baara kɛ ni funteni-minɛ fɛɛrɛw ye walasa ka ɲagami funteni ni fɛnɲɛnamafagalanw bɔli dɔgɔya. Dunanw ka feerekɛlaw fɛ, FHWA ka gafe bɛ cikan jɛlen bila : sugu sɔrɔli denmisɛnninw na, o bɛ bɔ baarakɛcogo kunnafoniw de la, a tɛ bɔ jamana bɔyɔrɔ la. Rejuvenator min bɔra FangService la, o dabɔra ni FHWA ɲɛjiralan wajibiyalenw ye a hakili la — 25°C sɔgɔsɔgɔninjɛ ye 280 mPa·s ye, flash point ye 231°C ye, RTFOT sɔgɔsɔgɔninjɛ hakɛ ye 1,1 ye, ani RTFOT mass changement ye 0,9% ye — o bɛɛ bɛ FHWA guide ka dantigɛliw dafa.

Ameriki RAP ka sɔngɔko fɛɛrɛw: Mun na, fɛn minnu bɛ se ka don mɔgɔw la, olu ka segin-ka-bɔnye bɛ sɔrɔko siratigɛ la

Ameriki RAP sɔngɔko fɛɛrɛ ni Erɔpu ta tɛ kelen ye. Ameriki jamana na, a ka c’a la, RAP sɔngɔw bɛ latigɛ sigida ka sɔrɔ ni ɲinini fɛ sanni ka kɛɲɛ ni fɛn falen nafa ye. Cɛmancɛ ni tilebin jamanaw na (i n’a fɔ Teksas, Kalifɔrni), RAP sɔrɔli ka ca ani a sɔngɔ bɛ se ka dɔgɔya fo dɔrɔmɛ 15-25 tɔni kelen na — k’a sɔrɔ fɛn kuraw bɛɛ lajɛlen bɛ se ka kɛ dɔrɔmɛ 40-60 ye tɔni kelen na. O sɔngɔ danfara in kɔrɔ ye ko RAP baara tɛ dan fɛnw musakaw dɔrɔn ma, nka a bɛ i yɛrɛ tanga npogotigininw ka kabakurunbɔ ni u tali musakaw fana ma. Ka fara o kan, Ameriki bitumini sɔngɔ bɛ kɛ dɔrɔmɛ 500-700 ye tɔni kelen na, k’a sɔrɔ bitumini kɔrɔ caman cili nafa bɛ RAP kɔnɔ, o sɔngɔ ka dɔgɔ kosɛbɛ o sɔngɔ la. Ni aw bɛ baara kɛ ni denmisɛnnin ye walasa ka RAP hakɛ wuli ka bɔ 30% na ka se 60% ma, o bɛ bitumini kura kilo 30-40 ɲɔgɔn kisi ɲagami tɔni kelen na, o bɛ kɛ sababu ye ka dɔrɔmɛ 15-28 ɲɔgɔn bɔ tɔni kelen na sisan sɔngɔw la. Porozɛ min bɛ se tɔni 100.000 ma, o dɔrɔn bɛ dɔrɔmɛ miliyɔn 1,5-2,8 bɔ bitumini musakaw la.

Foro ko: Texas I-35 siraba labɛnni porozɛ

Texas I-35 siraba labɛnni porozɛ dɔ la, Texas bolifɛnko minisiriso (TxDOT) ye RAP caman labɛncogo dɔ ta min kɔnɔ RAP hakɛ ye 60% ye. Kunnafoni jɔnjɔnw : fɔlɔ, RAP bɔra asfalt surfacing la min bilala san 20 ka kɔn o ɲɛ, min baara kɛra TxDOT ka grading system fɛ ; filanan, denmisɛnya hakɛ tun ye 10% ye bitumini hakɛ la RAP kɔnɔ, ani denmisɛnya kɔfɛ doncogo tun bɛ segin ka bɔ dmm 25 na ka se dmm 50 ma (bitumini npogotiginin tun ye dmm 55 ye) sabanan, ɲagami funteni jigira ka bɔ 175°C la ka se 125°C ma, o ye dɔ bɔ sɛnɛfɛnw tacogo la ni 30% ɲɔgɔn ye; naaninan, poroze musaka bɛɛ lajɛlen tun ka dɔgɔ ni 32% ɲɔgɔn ye ka tɛmɛ furakɛlicogo kɔrɔ kan min bɛ kɛ ka fɛnw ɲagami, ni kabɔn juru sɔrɔta ye dɔrɔmɛ 500.000 ɲɔgɔn ye. Nin ko in nafa ye ko a b’a jira ko Ameriki jamana fanga sirabaw ka sigida hukumu kɔnɔ, RAP caman labɛnni tɛ se ka kɛ dɔrɔn fɛɛrɛko siratigɛ la, nka a bɛ nafa sɔrɔ sɔrɔko siratigɛ la fana — TxDOT injiniyɛriw y’a jira ko ni kabon juru sɔrɔta ni ladonni cycle janya bolomafaraw jatera porozɛw wariko la, musaka bɛɛ lajɛlen bɛ dɔgɔya ka tɛmɛ 40% kan ka tɛmɛ fɛɛrɛ kɔrɔ kan.

Sanniko latigɛ: Sira min bɛ kɛ jamana wɛrɛw ka feerekɛlaw bolo walasa u ka don Ameriki sugu la

Dunanw ka asfalt rejuvenator feerelaw minnu b’a fɛ ka don Ameriki sugu la, sariya labatoli ni jago siraw mago bɛ bolodacogo sigilen na. Fɔlɔ, fɛɛrɛko seereyaw — fɛɛrɛko sɛbɛnw ni sɛgɛsɛgɛli kunnafoniw labɛn ka kɛɲɛ ni AASHTO ni FHWA ka ɲininiw ye, ni sɛgɛsɛgɛli yɛrɛmahɔrɔnyalen ye Ameriki ka laboratuwariw fɛ minnu lakodɔnnen don (i n’a fɔ AASHTO ka fɛnw sɛgɛsɛgɛli laboratuwaraw). Filanan, sigida baarada — ka jɛɲɔgɔnyaw sigi senkan ni Ameriki nɛgɛso feerelaw walima a feerelaw ye walasa k’u ka kiliyanw ka rezo kɔrɔw n’u ka fɛnw ladonni sekow nafa. Sabanan, porozɛ piloti — jɛɲɔgɔnya kɛ ni jamana DOT ye (i n’a fɔ TxDOT walima Caltrans) walasa ka porozɛ piloti dɔ dafa, ka Ameriki sigida injiniyɛri kunnafoniw ni baarakɛcogo sɛbɛnw dalajɛ. Naaninan, izini tɔnw sendonni — fara Fasokanw ka Asphalt Pavement Association (NAPA) walima ASTM International kan walasa ka i sen don izini sariyaw yiriwali ni fɛɛrɛbɔ la. Nin sen naani ninnu kɔfɛ, jamana wɛrɛw ka feerekɛlaw bɛ se ka u sen don forobaciyɛnko la Ameriki sugu la. Hakilila jɔnjɔn ye ko Ameriki sugu bɛ dɔn ni ‘fɛɛrɛbɔ ye’ — ni baarakɛcogo kunnafoniw barika ka bon kosɛbɛ, jamana wɛrɛw ka fɛn dilannenw bɛ se ka ɲɔgɔn sɔrɔ ni sigida ka fɛn dilannenw ye. A tɛ i n’a fɔ Erɔpu sugu, sigidako gɛlɛyaw ka ɲɛsin feerekɛlaw ma minnu tɛ sigida ta ye Ameriki sugu la, olu ka dɔgɔ kosɛbɛ. View the Asphalt Rejuvenator Supplier