Ñalnde 20 suwee 2025
Gila e mahngo defterdu RAP haa e jillondirde e diisnondiral e jaɓgol, ndee winndannde ina rokka laawol kuuɓtodinngol ngam ɓeydude loowdi reclaimed-asphalt gila e 30% haa 60%+.
Laawol gadanol ngam hollirde loowdi RAP wonaa mix design — ko mahde defterdu RAP. RAP wonaa huunde wootere — RAP ummoraade e taƴe laabi ceertuɗi, luggiɗde millo ceertuɗo, e yontaaji mahdi ceertuɗi ina ceerti no feewi e njuuteendi bitumen, e njuuteendi aggregate, e tolno duuɓi. Huutoraade RAP tawa alaa toɓɓere ina foti e naatnude ŋakkeende hoolaare e nder diisnondiral mix. Mahngo defterdu RAP ina waɗi geɗe tati. Arano oo, ko ƴettude sampleeji : ƴettude sampleeji wakilaaji e nder sahaaji jokkondire e kala taƴre millo, tawa ina sudda njaajeendi laana kaa fof. Ɗiɗaɓere ndee, tolno : feccude RAP e tolnooji keewɗi tuugiiɗi e njuuteendi bitumen (yeru, 4-5%, 5-6%, 6-7%) e tolno tolnooji kuuɓtidinɗi, mooftude e limtude kala tolno ceertuɗo. Tataɓol, fayndaare : waɗde jarribooji timmuɗi e kala tolno — ko woni e bitumen (laabi ɓuuɓgol), tolno mooftirgel (analyse sieve), golle bitumen (ɓurɗo yirlaade, naatde, nokku softinde), e golle mooftirgel (nafoore ɓuuɓnde, ɓuuɓgol Los Angeles, ɓuuɓgol ndiyam). So defterdu RAP sosaa, mix design ina jogii tuugnorgal doosɗe koolniingal tawa tuugnaaki e limtooji empirik.
Caggal nde defterdu RAP sosaa, faɗo mix design fuɗɗotoo. Laawol diisnondiral ngal ina nanndi e diisnondiral asfalt mix gaadoraangal, kono ina waɗi geɗe tati teeŋtuɗe. Arandeere ndee, ‘jokkondiral’ bitumen keso e mbayliigu — ina woodi peeje jillondirɗe e jokkondire hakkunde bitumen ɓooyɗo e nder RAP e bitumen keso ɓeydaaɗo oo, tawa kadi keewal bitumen ngal waawataa hiisaade tan ko ɓeydude bitumen RAP e bitumen keso oo. Ɗiɗaɓere, doseeji ɓuuɓɗi — ɓuuɓɗi ɗii ina keewi ɓeydeede e teemedere e nder teemedere (100) e maslahaa bitumen e nder RAP (yeru, 5-15%), tawa keewal keeringal ina fawii e tolno duumingol bitumen RAP e golle paandaale. Tataɓol, diisnondiral toɗɗagol — aggregaat ɓooyɗo e nder RAP oo, ɓuuɓnaama, ɓuuɓnaama no feewi, sifaaji toɗɗagol mum ina ceerti e aggregaat keso mo ɓe keɓi oo ; ko ɓuri heewde ko aggregat RAP ɓuri laaɓtude (index flakiness ɓurɗo toowde), ko ɗum waɗi njuuteendi coarse-to-fine aggregat keso ina foti ƴeewteede no haanirta nii. Doggol diisnondiral ngal ko : diisnondiral mbayliigu (laboratoire Marshall walla Superpave Gyratory) → hoolkiso mbayliigu peewnugol (ƴeewndo leɗɗe) → hoolkiso mbayliigu jarribo (ƴettugol taƴre paabi).
No RAP ɓeydortoo nii, tiiɗnaare ɓuuɓri ndii (doole ɓuuɓɗe ɗe ngonaa tiiɗɗe, modulus dinamiik) ina ɓeydoo heewde — ɗum ina moƴƴi sabu tiiɗnaare toownde firti ko pavement oo ina famɗi no feewi e les njiimaandi (risk rutting) ina famɗi. Kono kadi, tiiɗnaare toownde no feewi ina addana kadi caɗeele : ko adii fof, ɓeydagol baasal ɓuuɓde e nguleeki les — ɓuuɓri toowndi ina addana nguleeki ɓurtuki so nguleeki ina ustoo, kadi so semmbe ɓuuɓgol waawaano jogaade, ɓuuɓgol gonngol e dow ŋorol ngol ina feeña ; ɗiɗmo, nguurndam fatigue ina waawi ustaade — e les njiimaandi keewndi, geɗe toowɗe tiiɗɗe ina njogii mbaawka ɓurka famɗude e ustude baasal. Ko ɗum waɗi, sifaa loowdi RAP waawaa ƴeewde golle rutting tan ; lowre ɓuuɓnde e golle fatigue ina poti ƴeewteede e sahaa gooto. Laawol injiniyaagal ngol ko : waɗde ceŋol tiiɗngol (yeru, modulus dinamiik 10 000-15 000 MPa @ 20°C, 10 Hz), e yuɓɓinde mbaydi ɓuuɓndi e njuuteendi bitumen keso ngam jogaade tiiɗgol jillondirngol ngol e nder nokku mo njiɗ-ɗaa. Dowlaaji poozaaɗi ina kollita wonde 60% e njuuteendi RAP huutortoo ko rejuvenator ummoraade e FangService ina jogii modulus dinamiik e nder njuuteendi 30% e njuuteendi RAP ɓooyndi, tawi nguurndam fatigue ina ɓeydoo ko ɓuri 15%.
So tawii ko RAP ɓurii 40%, golle jillondiral ina ustoo no feewi, ina feeñira e laabi tati. Arano oo, ɓeydagol semmbe jillondirde — bitumen ɓooyɗo ina jogii ɓuuɓri toowndi, e ɓuuɓri RAP ina heɓa semmbe ɓurɗo mawnude e nder mbaydi jillondirde, ko famɗi fof ina addana jillondirde nde fotaani. Ɗiɗaɓere, caɗeele paving — ɓuuɓri toowndi ina ilna no feewi e nder hopper masiŋ paving e renndinde no moƴƴi rewrude e conveyor vis, ina waawi saabaade seerndude e dow paving surface. Tataɓol, caɗeele ɓuuɓgol — ɓuuɓgol ngol ina waasa ɓuuɓgol e nguleeki ɓurki famɗude, ina ɗaɓɓi e rogere nde rewata ko ɓuri ɓadaade e huutoraade paasuuji ɓurɗi heewde. Feereeji injiniyaagal ina njeyaa heen : ko adii fof, huutoraade ƴulɓe warm-mix ngam ustude ɓuuɓri keewndi (ƴulɓe gila FangService ina addana nguleeki ƴulɓe haa 120-140°C, ina ɓeyda no feewi golle ); ɗimmo oo, moƴƴinde nguleeki RAP — ustude nguleeki RAP haa 60-80°C hade mum jillondirde ngam ustude ceerungal nguleeki e aggregat keso ; tataɓol, yuɓɓinde golle compaction — huutoraade compaction vibration toowɗo, lowre-amplitude ngam ɓeydude kattanɗe tawa ina usta ɓuuɓri aggregate.
Laabi jaɓgol mbaydiiji RAP toowɗi mbaawaa tan koppirde ɗi mbaydiiji gaadoraaɗi ɗii, tee ina poti yuɓɓineede tuugnaade e sifaaji karallaagal mbayliigu. Ko adii fof, darnde Marshall e doggol — darnde ina hollita mbaawka jogaade teddeendi e doggol ina hollita mbaawka deformaasiyoŋ. Jillondirɗe RAP toowɗe ina keewi jogaade darnde ɓurnde toowde kono ina waawi jogaade doole ɓurɗe famɗude (kaɓirgal ɓurngal tiiɗde), ɗum noon jaɓgol ina foti tiiɗnaade e njuuteendi darnde-to-ɓuuɓri wonaa e kollirooje ɗiɗi ɗee tan. Ɗiɗaɓere, ɓuuɓri henndu — ɓuuɓri henndu diisnondiral ina heewi 4-6%, e ɓuuɓri henndu ladde ngam jillondiral toowngal RAP ina foti wonde e nder ±1,5% e diisnondiral. Tataɓol ngol, VMA (boɗeeje e nder aggregat miniraal) — VMA ina heewi lesɗude wonande jillondirɗe toowɗe RAP sabu aggregat ɓooyɗo ina jogii tawo feccere e nokku oo. Nayaɓol ngol, golle fati — wonande taƴe njulaagu no feewi, nguurndam fati ko famɗi fof 1 000 000 cirkooji jolngo ina foti ɗaɓɓireede. Joyaɓere, golle ɓuuɓɗe — jarribooji ɓuuɓɗi ɓuuɓɗi walla jarribooji BBR ina poti waɗeede ngam tabitinde ɓuuɓol ɓuuɓngol ɓuuɓol ngol e -10°C tawa ustaani 2 000 με.
Ko adii nde cifoto-ɗaa loowdi RAP e soodde rejuvenator, ƴeewndo mbaawkaaji dokkoowo ina tiiɗi. Geɗe jeegom ina poti tabitineede. Ko adii fof, sifaa rejuvenator — mbele ko sifaa dilution-oil jibinannde adannde walla sifaa regeneration moleculaire jibinannde ɗiɗmere ? Ko sakkitii koo ɓuri heewde e golle juutɗe. Ɗiɗaɓere, ɓataake karallaagal — ɗaɓɓude paaraaji fisik e kemikal timmuɗi : ɓuuɓri, ɓuuɓri, ɓuuɓri, pecce (saturate/aromatik/resin/asfaltene), e golle duumingol caggal RTFOT. Rejuvenator ummoraade e FangService ina yaltina ɗeeɗoo kollitooje fof, tee fof ko e toɓɓe ardiiɗe e nder dingiral. Tataɓol, dokke teskinɗe e ƴellitaare — ɗaɓɓude dokke keso injiniyaaruuji kuutortooɗi ooɗoo rejuvenator, ina heen naatgol bitumen rewtinaaɗo e laboratuwaar, nokku softeende, dokke ƴellitgol ductility, e dokke golle jillondiral ladde. Nayaɓol ngol, ko nanondiral — tabitinde nanondiral hakkunde njuumri e bitumen kuutorteeɗo e eɓɓaande ndee (yeru, bitumen mo SBS wayli, bitumen rubberized). Joyaɓere, darnde jokkere enɗam — tabitinde mbaawka peewnugol jokkere enɗam e tolnooji jokkere enɗam ngam tabitinde jokkere enɗam nde taƴaaka e nder eɓɓaande ndee. Go’o, ballal karallaagal — tabitinde so tawii balloowo oo ina waawi rokkude ballal karallaagal e nokku hee e ballal diisnondiral jillondirngal. So tawii heen huunde e ɗee geɗe jeegom ina ŋakki, ko balloowo oo foti lomtineede.
E nder sifaaji karallaagal nanondiral innde, kuule jowitiiɗe e mbayliigu RAP ina poti winndeede no laaɓiri ngam daɗndude luural caggal ɗuum. Ko adii fof, loowdi RAP — hollir loowdi RAP ndi njiɗ-ɗaa (yeru, 60%) e tolno mbayliigu jaɓaangu (yeru, ±5%). Ɗiɗaɓere, marque e model rejuvenator — hollirde geɗel gootel ngam haɗde kontraktor oo lomtaade ɗum. Tataɓol, nguleeki jillondirde — hollirde nguleeki jillondirde cirƴam ɓuuɓɗam (120-140°C) e nguleeki ɓuuɓki (100-120°C). Nayaɓo, laabi jaɓgol — tuugnorgal laabi jarribooji keertiiɗi e tolnooji paas (yeru, ɓuuɓri henndu 4-6%, modulus dinamiik ≥10,000 MPa). Joyaɓere, kuule mbayliigu — so tawii loowdi RAP ina haani wayleede sabu mbayliigu kaɓirɗe, laawol mbayliigu e mbaadi mbayliigu coggu ina foti laaɓtineede. E nder ɗeeɗoo kuule joy binndaaɗe laaɓtuɗe, keeri kuuɓtodinɗi hakkunde golloowo e joom mum ina laaɓti.
Haalan min senaare eɓɓoore maa e sarɗiiji, min mbaɗata heen feere moƴƴere e rokkude min limto e nder waktuuji 24.
Heɓde Quote mo alaa ko yoɓi3-in-1 ɓuuɓnoowo asfalt (jillondiral nguleeki + waylude + mbayliigu), RAP >=60% (ɓurɗo heewde 100%), nguleeki jillondiral 120-140°C, nguurndam ŋakkeende >=85% asfalt keso, njoɓdi kuuɓtodinndi 25-40% les. Ɓooygol 280 mPa·s, ɓuuɓol 231°C, ɓuuɓol 0,96 g/cm3, ina tawee e mbaydiiji 25 kg walla 1000 kg. Wallude fooruuji keertiiɗi e dow naamnal e rokkude ciimtol jarribo batch, e sarɗiiji njulaagu cuɓaaɗi EXW/FOB/CIF/DDP.
Janngu ko fayti e suɓagol agent regeneration asfalt e quotation →