Molekiliw ka yɛlɛmani be bitumen kɔrɔ lakuraya cogo min na: Ka bɔ simi la ka taga se foro kɔnɔ sɛgɛsɛgɛri ma

Kumabolo

Awirilikalo tile 20, saan 2025

Asphalte kurakurayali tɛ ‘tulu fara bitumen kɔrɔ kan’ dɔrɔn ye. Nin barokun be kemikali kɛcogo lajɛ k’a ta bitumen kɔrɔman labɛncogo ma ka taga a bila foro kɔnɔ sɛgɛsɛgɛri la.

Ka bɔ ‘Dilution avec l’huile’ la ka taga se ‘Moléculaire régénération’ ma: Asphalte kurakurayali fɛɛrɛ bɔnsɔn fila

Asphalte kurakurayali fɛɛrɛ ye ɲɛtaga sɔrɔ bɔnsɔn fila kɔnɔ. O fɛɛrɛ fɔlɔ tun ka nɔgɔ: u tun be tulu minw be yɛlɛma (i n’a fɔ kerosɛn wala distilɛti fitininw) ɲagami bitumen kɔrɔman na walisa ka nɔgɔya dɔgɔya farikolo la. O fɛɛrɛ sɔngɔ man gwɛlɛ ani a ka nɔgɔ ka baara kɛ n’a ye, nka a ka gwɛlɛyaw fana be ye ka gwɛ — yɔrɔ minw be dilution tulu kɔnɔ, olu be yɛlɛma tugun ɲagaminin ni baara wagati la, o be kɛ sababu ye ka kɔrɔya filanan bila mɔgɔ la, ani pawe be gɛlɛya tugun ani ka fara saan 2-3 baara kɔ. O bɔnsɔn filanan ye molekiliw lakurayali ye: sanni a ka jigi la farikolo yɛlɛmani kan, a be bitumen kɔrɔ ka molekiliw labɛn ni fanga ye kemikali fɛɛrɛw fɛ — a be molekiliw girinya kɛrɛnkɛrɛnninw ka yeelen yɔrɔ dɔw fa walisa ka koloyidiw ka balansi lasegin u ma, ka oksidatiw ka ɲɔgɔndanw tigɛ walisa ka aggregitikiw hakɛ dɔgɔya ka kɛ aggregitikiw hakɛ dɔgɔya ani ka aggregitikiw hakɛ dɔgɔya ani ka molekiliw hakɛ dɔgɔya. bitumen kurakurayali kristalizasiyɔn kura. Asphalte lakurayalan min be dɛmɛ ni FangService ye, o ye o bɔnsɔn filanan ka molekili lakurayali fɛɛrɛ ye.

Bitumen ka koloyidi modɛli: Asfalti yɔrɔw, rɛzini yɔrɔw ani tulu jɛnsɛnni

Walisa ka molekiliw ka yɛlɛmani faamu, mɔgɔ ka ɲi ka bitumen ka koloyidi cogoya faamu fɔlɔ. Bitumen tɛ fɛn nɔgɔman ye nka koloyidi jɛnsɛnnin gɛlɛman lo min be kɛ ni yɔrɔba naani ye: asphaltene (molɛkili girinya ka bon, polarite barikaman, n-hexane kɔnɔ tɛ se ka yɛlɛma), saturate (min tɛ polari ye, molekili girinya ka dɔgɔ), aromatiki (polarite hakɛlaman, molekili we cɛman). kasadiyanan). Bitumen kura kɔnɔ, asifaltɛni yɔrɔw be nɔrɔ ɲɔgɔn na ni rɛzini molekiliw ye ani u be nɔrɔ ɲɔgɔn na ni saturatiw ni aromatikiw ye minw be to ka kɛ, o min be kɛ sol-gel sisitɛmu basiginin ye. Kɔrɔya wagati la, tuluw (saturates + aromatiques) be to ka dɔgɔya, résines be yɛlɛma ka kɛ asphaltenes ye oxidation kɔrɔ, asphaltenes agrégats be bonya ka taga, ani koloidal structure be bɔ sol ka kɛ gel ye — o be bɔnɛ mekaniki setigiya bɛɛ la ka tɛmɛ ji bɔli kan.

Molɛkiliw ka kristalizasiyɔn: Ka asfaltɛni ɲɔgɔndanw labɛnnin tiɲɛ

Asphaltenes minw be bitumen kɔrɔ kɔnɔ, olu tɛ yen i n’a fɔ molekili kelen kelen — u be nanoscale agɛrɛgatiw dilan π-π ɲɔgɔndan ani idɔrɔzɛni ɲɔgɔndan sababu fɛ, ani o agɛrɛgatiw be fara ɲɔgɔn kan ka kɛ mikron-scale kuluw ye. Kɔrɔyatɔ, asfalti ɲɔgɔndanw kɔnɔna molekiliw labɛnnin be to ka labɛn ka taga, ka yɔrɔw dilan i n’a fɔ kristali — o baara be weele ko de-crystallization wala labɛn. O yɔrɔ minw labɛnnin lo, olu lo be nɔgɔ sababuya: u be kɛ stress concentration points ye funteni dɔgɔmanw na, o be kɛ sababu ye ka bitumen kari funteni hakɛ la min ka ca n’a ka vitɛsi yɛlɛmani funteni ye kosɔbɛ. Fɛɛn minw be baara kɛ molekiliw lakurayali la, olu be se ka don π-π ɲɔgɔnna yɔrɔw cɛma minw be sɔrɔ asfalti ɲɔgɔndanw na, ka labɛn tiɲɛ molekiliw cɛ ani ka kristali yɔrɔw jɛnsɛn tugun ka kɛ yɔrɔ jɛnsɛnnin ye min tɛ yɛlɛma. O tɛ dilution nɔgɔman ye — a be yɛlɛma don asphalte ka agrégation cogoya la.

Steric-Hindrance Resin: A be Bitumen kurakurayali bali ka kɛ kristalizasiyɔn ye tugun

Gɛlɛyaba min be molekiliw lakurayali la, o ye ni koloyidi min labɛnna, o bena kɔrɔ tugun marali ni baara wagati la. A jaabili ye ɔnhɔn ye, ni basigifɛnw tɛ yen. Bitumen min bɔra kristalize la kura ani min fanin be yeelen na, o be cogoya dɔ la min tɛ basigi thermodynamique la, ani asphalte fɛnɲɛnamaw be se ka ɲɔgɔn lajɛn tugun ani ka ɲɔgɔn labɛn kokura. Steric-hindrance resin b’o gwɛlɛya ɲɛnabɔ: o rɛzin molekiliw kɔnɔ, gɛrɛfɛla cakɛda kuluw be yen minw be nɔrɔ asfalti fɛnɲɛnamaw sanfɛ, u be farikolo barikada dɔ kɛ min b’a to asfalti fɛnɲɛnamaw minw be gɛrɛfɛ, u tɛ se ka gwɛrɛ ani ka ɲɔgɔn lajɛn tugun. A be komi i be baara kɛra ni furakisɛ ye min be se ka kunsigi sɔgɔ sisan — a kunsigiw tɛ nɔrɔ ɲɔgɔn na tugun ani u be to ka jɛnsɛn. Steric-hindrance resin donni be bitumen kurakurayali maracogo sabati kosɔbɛ: lɛri 48 tɛmɛnin kɔ 160°C taa kɔnɔ, a be se ka nɔgɔya yɔrɔ danfara kɔlɔsi 2°C kɔnɔ (industrie ka bɛnkan b’a ɲini a fɛ a kana tɛmɛ 5°C kan).

Réseau croisé à trois dimensions: Ka bɔ ‘fluidité lasegin’ ma ka taga se ‘Mécaniques propriétés amélioration’ ma.

Laada dilution-oil rejuvenation be se ka bitumen kɔrɔw ka baara lasegin bitumen kura hakɛ ma dɔrɔn — o ye laɲinita ye min be sara. Nka molekili kurakurayalan min bɔra FangService la, o be taga yɔrɔ wɛrɛ: a be ni fɛɛn dɔ ye min be se ka yɛlɛma ani a be yɛlɛma yɛlɛma ni yɔrɔ minw be baara kɛ bitumi kɔnɔ ɲagamininw ka funteni hakɛ la, in-situ be kɛ nɛgɛjuru ye min be ɲɔgɔn minɛ ni yɔrɔ saba ye. O nɛgɛjuru tɛ jii lasegin a ma — o tɛ kelen ye: a be nɛgɛjuruw don koloyidi labɛnnin kɔnɔ, o min be bitumen kurakurayali se ka yɛlɛma yɛlɛma min ka ca ni bitumen kura ta ye. Kɛrɛnkɛrɛnniya la: fɔlɔ, 3D réseau be viscoelastisite fisaya, o min b’a to pawe be se ka gɛlɛyaw minɛ ani k’u tilan doni kɔrɔ; filanan, nɛgɛjuru sigicogo be jɛɲɔgɔnya sabati bitumi ni agɛrɛgati cɛ, o be dɔ bɔ ji tiɲɛni farati la; sabanan, ɲɔgɔndan min be kɛ ni ɲɔgɔn ye, o be se ka bitumen dɛmɛ a k’a yɛrɛ kɛnɛya — yɔrɔ misɛnninw be se ka datugu yɔrɔ dɔw la k’a sɔrɔ u ma jɛnsɛn funteni yɛlɛmani wagati la. Sumanniw b’a yira ko sɛgɛsɛgɛri min be kɛ ni asphalte ɲagaminin kura ye, o be se ka tɛmɛ 85% kan asphalte nɔgɔnin ta la, ani cogoya dɔw la, a be se ka surunya 100% ma.

Laboratuwari ka sɛgɛsɛgɛli: tagamasiɲɛ jɔnjɔn duuru ka bɔ donyɔrɔ la ka taga se RTFOT ma

Molɛkiliw lakurayali ka baarakɛcogo ka kan ka jati laboratuwari la. Asphalte kurakurayalikɛlaw ta fan fɛ, tagamasiɲɛ jɔnjɔn duuru ka kan ka sɛgɛsɛgɛ. A fɔlɔ, donyɔrɔ: o be bitumi gɛlɛya yira; laɲini min be kɛ ka mɔgɔw lakuraya, o ye ka bitumen kɔrɔw donyɔrɔ lasegin u ma fɔɔ ka se bitumen kuraw ka 80% ni kɔ ma. A filanan, nɔgɔyayɔrɔ: a be basigi yira funteniba la; n’a y’a lakuraya, a ka kan ka nɔgɔya yɔrɔ min na, o ka kan ka kɛ i n’a fɔ bitumen kura ta, danfara min tɛ u ni ɲɔgɔn cɛ, o ka kan ka tɛmɛ 3°C kan. A sabanan, ductilité: a be se ka farali kɛlɛ ni funteni dɔgɔman ye; 5°C ductilité ye tagamasiɲɛ jɔnjɔn ye ani a ka kan ka segi ka se 70% ni kɔ ma bitumen kura hakɛ la. A naaninan, nɔgɔ: Brookfield nɔgɔ min be 135°C la, o ka kan ka kɛ i n’a fɔ bitumen kura, o la, a be se ka ɲagami ani ka ɲɔgɔn nɔrɔ ɲɔgɔn na. Duurunan, RTFOT kɔfɛ baara: bitumen min lakurayara, o ka kan ka kisi Rolling Thin Film Oven Test ma k’a sɔrɔ a ka baarakɛcogo ma tiɲɛ — a ka ca a la, a ka ca ni ±3% ye ani a ka ca a la, a ka dɔgɔ ni 0,7 ye. O fɛn min be bɔ FangService la, o be baara kɛ koɲuman tagamasiɲɛ duuru bɛɛ la: sɛgɛsɛgɛli tilenninw ye 25°C gɛrɛntɛ ye 280 mPa·s, 231°C gɛrɛntɛ yɔrɔ, RTFOT gɛrɛntɛ hakɛ 1,1, ani RTFOT gɛrɛntɛ hakɛ 0,9%.

Foro sɛgɛsɛgɛli: Kunnafoni dafaninw ka bɔ izini na ka taga se pawe ma

Laboratuwari ka kunnafoni ɲumanw ka kan ka sɛgɛsɛgɛ ni foroba ɛnzeniyɛri ka kunnafoniw ye. RAP ka yɛlɛmani poroze tipikali dɔ be ni sɛgɛsɛgɛri kɛcogo nunu ye. A fɔlɔ, yiriw kɔlɔsili: sɛgɛsɛgɛli be ta ɲagami wagati la walisa k’a filɛ ni funteni be bɛn ɲɔgɔn ma ani ni bitumen be nɔrɔ a la, k’a lajɛ ni yɛlɛmanikɛlan be jɛnsɛnna pewu 120-140°C la. A filanan, pavement ani compaction kɔlɔsili: compaction funteni, tɛmɛyɔrɔ hakɛ, ani densité laban be sɛbɛ ani ka sanga ɲɔgɔn ma ni yɔrɔ dɔ ye min be ɲɔgɔn ɲagami ni funteni ye. A sabanan, core sampling: pavement kɛnɛyanin kɔ, cores be sɔgɔ ani k’u sɛgɛsɛgɛ k’a filɛ n’u ka ca, n’u be yɔrɔ gwansanw ye ani n’u be Marshall ka basigi. A naaninan, baarakɛcogo kɔlɔsili wagatijan kɔnɔ: sensɔriw be don wala tagamasiɲɛw be sigi kɔrɔbɔli yɔrɔ la ani sɛgɛsɛgɛri minw be kɛ tuma o tuma, u b’a filɛ a pɛtɛnin lo cogo min na, a be fara yɔrɔ min na ani a be yɔrɔ min na. 60% RAP ka sɛgɛsɛgɛli yɔrɔ dɔ la saan fila kɔnɔ, o b’a yira ko danfara foyi tɛ baara kɛcogo la ni ɲagaminin gwansan kɔrɔman ye, k’a sɔrɔ saan sabanan na, yɔrɔ min lakurayara, o b’a daminɛ ka sɛgɛsɛgɛri kɛcogo nafaw yira — o sababu ye ko bitumen lakurayalen ka elastisite yɛlɛmani se be to ka nafa caaman di.

Sanni latigɛli: Molɛkiliw ka kurakurayali ni tulu min be yɛlɛma ani bitumen kura

Sirako sanbagaw fɛ, o sugandili ye yɛlɛmani ye min be kɛ sugandili saba cɛma. Sugandili A: ka baara kɛ ni bitumen kɛnɛ ye 100% ani fɛnɲɛnamafagalanw (0% RAP) — sɔngɔ min ka ca a daminɛ na, farati min be yen fɛɛrɛko la, o ka dɔgɔ. Sugandili B: ka baara kɛ ni dilution tulu ye ka 20-30% RAP lakuraya — a daminɛ na, a sɔngɔ ka dɔgɔ, nka a ka baara wagatijan kɔnɔ, sigasigali be yen ani a donni hakɛ tɛ se ka tɛmɛ 30% kan. Sugandili C: ka baara kɛ ni molekiliw lakurayali ye walisa ka 60%+ RAP sɔrɔ — sɔngɔ fɔlɔ min be A ni B cɛ, nka a ka dɔgɔ ni ɲɛnamaya bɛɛ sɔngɔ ye, a ka karibɔni bɔli ka dɔgɔ, ani a be se ka tanga yɛlɛmaniw ma minw be kɛ fɛnw sɔrɔcogo la. Sira porozew kama minw ka dilan wagati be se ka kɛ saan 3+ ye, Sugandili C ka ɲɛnamaya kɛcogo musakaw nafa ka bon. Baara minw be kɛ wagati dɔɔni kɔnɔ wala minw be kɛ joona joona, yɔrɔ bele be Sugandili B la. Sanni latigɛli kunba tɛ ‘sugandili jumɛn lo ka fisa’ nka ‘o poroze ka dilan cogo ye mun ye, yala karibɔni bɔli bena jati bidɛrɛw sɛgɛsɛgɛli la wa, ani yala fɛnw bɛɛ lajɛnnin be to a nɔɔ na’ — ɲiningali saba nunu jaabiliw b’a yira ka gwɛ ko sugandili ɲuman lo.