RAP kɔnɔkow ɲɛfɔli: Ka bɔ 30% la ka taga se 60%+ ma waleyali la

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Sɛtanburukalo tile 20, saan 2025

Ka bɔ RAP biblotɛki lɔli la ka taga dilan ni sɔnni ɲagami ɲɔgɔn na, nin barokun be sira ɲuman di ka reclaimed-asphalt kɔnɔfɛnw lawuli ka bɔ 30% la ka taga se 60%+ ma.

Fɛɛn fɔlɔ: Ka RAP ka biblotɛki lɔ — ‘Minan kɔrɔw ɲɔgɔnna’ tɛ, nka minanw marayɔrɔ lo min be sɛgɛsɛgɛri kɛ.

RAP kɔnɔkow ɲɛfɔli fɔlɔ tɛ mix design ye — o ye RAP biblotɛki lɔli ye. RAP tɛ fɛɛn kelen ye — RAP min be bɔ sira yɔrɔw la, mansin dunni tɛ kelen ye ani lɔli wagati tɛ kelen ye, o be dan na dan na kosɔbɛ bitumen hakɛ la, a ka fɛnw hakɛ la ani a ka kɔrɔya hakɛ la. Ka baara kɛ ni RAP ye k’a sɔrɔ i ma sɛgɛsɛgɛri kɛ, o b’i n’a fɔ ka sigasigali don ɲagaminin labɛncogo la. Ka RAP ka biblotɛki lɔ, o be kɛ ni koo saba ye. A fɔlɔ, sɛgɛsɛgɛli: aw ka sɛgɛsɛgɛli kɛ tuma o tuma ka bɔ mansin yɔrɔ kelen kelen bɛɛ la, ka sira bonya bɛɛ datugu. Filanan, sɛrɛkili: ka RAP tilan sɛrɛkili caman na ka kɛɲɛ ni bitumen hakɛ ye (misali la, 4-5%, 5-6%, 6-7%) ani sɛrɛkili hakɛ min be sɔrɔ sɛrɛkili la, ka sɛrɛkili kelen kelen bɛɛ mara ani k’u sɛbɛn u kelen kelen. A sabanan, dosiye: ka sɛgɛsɛgɛri dafaninw kɛ sɛrɛkili kelen kelen bɛɛ kan — bitumen kɔnɔfɛnw (tasuma minɛcogo), sɛrɛkili hakɛ (sɛgɛsɛgɛri min be kɛ ni siɲɛ ye), bitumɛn ka baara (a ka yɛlɛmani, a ka donyɔrɔ, a ka nɔgɔyayɔrɔ), ani a ka baarakɛcogo (a ka nɔgɔya, Los Angeles ka yɛlɛmani, jii minɛ). Ni RAP ka biblotɛki sigira ka ban, mix design be ni kunnafoniw jusigilan ye min be se ka la a la sanni a ka jigi la jateminɛw kan.

Ɲɛyirali filanan: Mix Design — Ka bɔ laɲinita la ka taga Mix dilanyɔrɔ la.

RAP ka biblotɛki siginin kɔ, ɲagaminin dilanyɔrɔ be daminɛ. O dilan cogo bɔnin be laada ka asphalte ɲagaminin dilan cogo ma, nka danfara jɔnjɔn saba b’u ni ɲɔgɔn cɛ. A fɔlɔ, ‘ɲagami’ ni bitumen kura ni bitumen labɛnna — ɲagamini ni ɲɔgɔndan be kɛ bitumen kɔrɔ min be RAP kɔnɔ ani bitumen kura min farala a kan, ani bitumen hakɛ bɛɛ tɛ se ka jati ni bitumen kura ni bitumen kura farali ye dɔrɔn. A filanan, nɔgɔyalan hakɛ — nɔgɔyalan be fara a kan tuma caaman na RAP ka bitumen hakɛ hakɛ dɔ la (misali la, 5-15%), ani hakɛ kɛrɛnkɛrɛnnin be kɛɲɛ ni RAP bitumen ka kɔrɔya hakɛ ye ani a ka baara laɲinin ye. A sabanan, sɛgɛsɛgɛli kɛcogo — fɛn kɔrɔ min be RAP kɔnɔ, o tigɛra ka sɛgɛsɛgɛ a yɛrɛ ma, wa a ka sɛgɛsɛgɛli kɛcogo ni fɛn kura min bɔra, o tɛ kelen ye; a ka c’a la, RAP ka mugu ka ɲi ka tɛmɛ (higher flakiness index), o la, mugumugu kura ka mugumugu ni mugumugu ka ɲi ka yɛlɛma ka kɛɲɛ n’o ye. Dilancogo yɛlɛmani ye: laɲini ɲagaminin dilanni (laboratuwari Marshall walima Superpave Gyratory) → dilan ɲagaminin sɛgɛsɛgɛli (yiriw sɛgɛsɛgɛli) → sɛgɛsɛgɛli ɲagaminin sɛgɛsɛgɛli (pavement yɔrɔ sɛgɛsɛgɛli).

Laɲinitaw: RAP kɔnɔkow ni modɛliw ka kɛɲɛ

RAP kɔnɔfɛnw be cayara minkɛ, ɲagaminin ka gɛlɛya (fanga min tɛ yɛlɛma, fanga min be yɛlɛma) be caya ka taga — o ka ɲi sabu gɛlɛyaba kɔrɔ ko pawe be yɛlɛma dɔɔni doni kɔrɔ ani farati min be se ka yɛlɛma, o ka dɔgɔ. Nka, gɛlɛya minw ka ca kojugu, o fana be na ni gwɛlɛyaw ye: fɔlɔ, a ka farati be fara a kan funteni dɔgɔman na — a ka gɛlɛya ɲagamininw be funteni gɛlɛyaba lawuli ni funteni be jigira, ani ni yɛlɛmani fanga tɛ se ka to a nɔɔ na, ​​farali minw be yɛlɛma yɛlɛma, olu bena bɔ; filanan, sɛgɛsɛgɛri ɲɛnamaya be se ka dɔgɔya — ni doni be don siɲɛ caaman, minan minw ka gwɛlɛ kosɔbɛ, olu tɛ se ka degunw minɛ ka ɲɛ. O la, RAP kɔnɔkow dantigɛli tɛ se ka rutting baarakɛcogo dɔrɔn lajɛ; yɔrɔ min ka funteni man bon, o ka kan ka sɛgɛsɛgɛ ɲɔgɔn fɛ. Ɛnsɛniyeri fɛɛrɛ ye: ka gɛlɛya hakɛ dɔ sigi (misali la, 10 000-15 000 MPa @ 20°C, 10 Hz), ani ka yɛlɛma don yɛlɛmanikɛlan labɛncogo la ani bitumen kura kɔnɔfɛnw na walisa ɲagaminin gɛlɛya ka to a laɲinin kɔnɔ. Sumanniw b’a yira ko 60% RAP ɲagaminin min be baara kɛ ni yɛlɛmanikɛlan ye ka bɔ FangService la, o be ni modɛli barikaman ye min be yɔrɔ kelen na ni 30% RAP ɲagaminin kɔrɔman ye, k’a sɔrɔ sɛgɛsɛgɛri ɲɛnamaya be fisaya ni 15% ni kɔ ye.

Baarakɛcogo kɔlɔsili: Fɛɛrɛ saba minw be se ka RAP don a la

Ni RAP kɔnɔfɛnw tɛmɛna 40% kan, ɲagaminin baarakɛcogo be dɔgɔya kosɛbɛ, o b’a yira cogo saba la. A fɔlɔ, ɲagaminin fanga be caya — bitumen kɔrɔman be ni gɛrɛntɛba ye, ani RAP fɛnɲɛnamaw be fanga caman sɔrɔ ɲagaminan nɛgɛdaga kɔnɔ, o be se ka kɛ sababu ye nɔgɔman na ɲagaminin tɛ kelen ye. A filanan, pavement gɛlɛya — ɲagaminin min ka gɛrɛntɛ ka bon, o be jigi ka ɲɛ pavement masin ka boon kɔnɔ ani a tɛ jɛnsɛn ka ɲɛ vis convoyeur fɛ, o be se ka kɛ sababu ye ka danfara don pavement kan. A sabanan, gɛlɛya min be sɔrɔ ɲɔgɔn na — ɲagaminin tɛ se ka ɲɔgɔn minɛ tugun ni funteni dɔgɔyara, o b’a to nɛgɛw be tugu ɲɔgɔn kɔ koɲuman ani ka baara kɛ ni tɛmɛyɔrɔ caaman ye. Ɛnsɛniyeri ka kɛlɛkɛcogo dɔw ye: fɔlɔ, ka baara kɛ ni warm-mix rejuvenator ye walisa ka nɔgɔya bɛɛ dɔgɔya (rejuvenator min be bɔ FangService la, o be ɲagaminin funteni jigi ka se 120-140°C ma, o be baarakɛcogo fisaya kosɛbɛ); filanan, RAP ka kɔn ka kalaya ka ɲɛ — RAP ka kɔn ka kalaya ka se 60-80°C ma sanni k’a ɲagami walisa ka funteni danfara dɔgɔya ni agɛrɛgati kura ye; sabanan, ka yɛlɛmani don ɲɔgɔnkunbɛn cogo la — i ka baara kɛ ni ɲɔgɔnkunbɛn ye min be yɛlɛmayɛlɛma ka caya ani min ka fanga ka dɔgɔ walisa ka baarakɛcogo fisaya ani k’a to mɔgɔw be ɲɔgɔn tiɲɛ.

Sɔn sariyaw: Ka bɔ Marshall ka taga Superpave ka tagamasiɲɛw la

RAP ɲagamininw ka sɔnni sariyaw tɛ se ka ɲagaminin kɔrɔw ta ɲɔgɔn ladegi dɔrɔn ani u ka kan ka yɛlɛma ka kɛɲɛ ni fɛnw labɛncogo fɛɛrɛw ye. A fɔlɔ, Marshall ka basigi ani jigi — basigi be doni ta se yira ani jigi be deformasiyɔn se yira. RAP ɲagamininw ka ca, u ka basigi ka ca nka u be se ka jigi dɔɔni (minɛnw ka gwɛlɛ), o la, sɔnni ka kan ka sinsin basigi-ni-ji hakɛ kan sanni ka sinsin tagamasiɲɛ fila kelen kelen bɛɛ kan. A filanan, fiɲɛ lakolonw — dilan fiɲɛ lakolonw ka teli ka kɛ 4-6% ye, ani foro fiɲɛ lakolonw ka ɲɛsin ɲagamininw ma minw ka RAP ka ca, o ka kan ka kɛ ±1.5% kɔnɔ dilan cogo la. A sabanan, VMA (voids dans l’agrégat minéraux) — VMA ka dɔgɔ ni RAP caaman ɲagamininw ye sabu agrégat kɔrɔ be yɔrɔ dɔ ta ka ban. A naaninan, sɛgɛsɛgɛri kɛcogo — yɔrɔ minw na jago be kɛ kosɔbɛ, sɛgɛsɛgɛri ɲɛnamaya min man kan ka dɔgɔya ni doni yɛlɛmani 1 000 000 ye, o ka kan ka kɛ. Duurunan, baarakɛcogo min be kɛ ni funteni dɔgɔman ye — sɛgɛsɛgɛri minw be kɛ ni funteni dɔgɔman ye, u ka kan ka kɛ walisa k’a lɔn ko ɲagaminin ka yɛlɛmani fanga min be -10°C la, o ma dɔgɔya ni 2 000 με ye.

Fɛɛn feerebagaw ka setigiya sɛgɛsɛgɛri: Fɛɛn wɔɔrɔ minw ka ɲi ka sɛgɛsɛgɛ sanni i ka Rejuvenator san

Sanni ka RAP kɔnɔkow ɲɛfɔ ani ka rejuvenator san, a ka ɲi ka sɛgɛsɛgɛri kɛ ka feerekɛlaw ka setigiya sɛgɛsɛgɛ. Fɛɛn wɔɔrɔ lo ka ɲi ka tiɲɛtigiya. A fɔlɔ, rejuvenator sugu — yala o ye bɔnsɔn fɔlɔ ka dilution-oil sugu ye wala bɔnsɔn filanan ka molecule regeneration sugu ye wa? O laban ka fisa ni tɔɔw ye kosɔbɛ wagatijan baara la. A filanan, kunnafoni sɛbɛn fɛɛrɛman — ka farikolo ni kemikali paramɛtiriw dafaninw ɲini: nɔgɔya, nɔgɔya, nɔgɔya, tilanyɔrɔw (saturate/aromatique/résine/asphaltene kɔnɔfɛnw), ani RTFOT kɔfɛ kɔrɔya baara. Rejuvenator min bɔra FangService la, o b’o tagamasiɲɛw bɛɛ bɔ, ani u bɛɛ be izinibaara ɲɛminɛbagaw ka nivow la. A sabanan, yɛlɛmaniw ka baarakɛcogo sɛgɛsɛgɛri kunnafoniw — ɲinini kɛ ɛnzeniyɛri ka koow la minw be baara kɛ n’o yɛlɛmanikɛlan ye, i n’a fɔ laboratuwari yɛlɛmani bitumen donyɔrɔ, yɔrɔ min be nɔgɔya, ductilité recovery kunnafoniw ani foro ɲagaminin baarakɛcogo kunnafoniw. Nanan, bɛnkan — ka bɛnkan sɛmɛntiya min be kɛ fɛn min be mɔgɔ lakuraya ani bitumi min be baara kɛ poroze la (misali la, SBS ka bitumi yɛlɛmana, bitumi min be kɛ ni pɔɔti ye). Duurunan, fɛnw sɔrɔli basigi — fɛnw dilanbaga ka setigiya n’a ka minanw hakɛ sɛgɛsɛgɛ walisa fɛnw sɔrɔli kana tigɛ poroze wagati la. A wɔɔrɔnan, fɛɛrɛw dɛmɛ — a sɛgɛsɛgɛ ni feerekɛla be se ka dɛmɛ don yɔrɔ la ani ka dɛmɛ don ka dilan cogo ɲagami. Ni o fɛɛn wɔɔrɔ nunu dɔ ma mɔgɔ wasa, a ka ɲi k’a feerebaga yɛlɛma.

Kontra kaan: Sariyasen duuru minw ka ɲi ka sɛbɛ ka gwɛ.

Ɛnsɛniyeri ka kontra fɛɛrɛw kɔnɔ, sariya minw ɲɛsinna RAP yɛlɛmani ma, u ka kan ka sɛbɛ ka gwɛ walisa sɔsɔli kana kɛ kɔfɛ. A fɔlɔ, RAP kɔnɔkow — RAP kɔnɔkow laɲinin yira (misali la, 60%) ani yɛlɛmani hakɛ min daganin lo (misali la, ±5%). A filanan, rejuvenator ka marki n’a ka modɛli — a’ ye fɛɛn tigitigi min dilan walisa ka kontratigi bali k’a nɔnabila. A sabanan, ɲagaminin funteni — ɲagaminin funteni hakɛ (120-140°C) ani ɲagaminin funteni hakɛ (100-120°C) yira. A naaninan, sɔnni sariyaw — kɔrɔbɔli fɛɛrɛ kɛrɛnkɛrɛnninw ani tɛmɛsira sariyaw lajɛ (misali la, fiɲɛ lakolonw 4-6%, fanga modɛli ≥10,000 MPa). Duurunan, yɛlɛmani sariyaw — ni RAP kɔnɔkow ka ɲi ka yɛlɛma sabu minanw be yɛlɛma, yɛlɛmani kɛcogo ani sɔngɔ yɛlɛmani kɛcogo ka kan ka ɲɛfɔ ka gwɛ. Ni o sariyakolo duuru sɛbɛra ka gwɛ, dan min be kontratigi ni baaratigi cɛ, o ɲɛfɔra ka ɲɛ.