Laboratory versus plant production: impact of material properties and performance for RAP and RAS mixtures

Rahbar-Rastegar, Reyhaneh; Daniel, Jo Sias

doi:10.1080/10298436.2016.1258243

Cited by 8 publications

(4 citation statements)

References 7 publications

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“…The phase angle is a direct indicator of the viscoelastic properties of the asphalt mix. A higher value of the phase angle indicates that the material demonstrates a more viscous behavior ( 38 ).…”

Section: Resultsmentioning

confidence: 99%

Moisture Sensitivity of Asphalt Mixtures using Cycling Pore Pressure Conditioning

Sulejmani

Said

Agardh

et al. 2019

Transportation Research Record

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One of the major causes of premature failure in asphalt pavements is moisture damage. Asphalt mixtures designed without considering climate impacts may suffer from durability problems caused by movement of water inside the asphalt mixture. Rolling traffic over wet pavement builds up pore pressure in the mixture, which will consequently accelerate deterioration. The objective of the study was to assess the moisture damage to asphalt concrete mixtures by means of complex modulus testing of dry and moisture-conditioned asphalt specimens with various mixture compositions. The asphalt mixtures were conditioned with the Moisture Induced Sensitivity Tester (MIST), which aims to replicate pore pressure in field conditions. The results showed a decline in stiffness modulus and a reduction in elastic properties after MIST conditioning. In addition, the results indicated that binder content and air void content had a significant influence on the reduction in stiffness. To capture the relationship between air void content, binder content, and the reduction in stiffness, a relationship was developed and validated with measurements on cores extracted in the field.

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Section: Resultsmentioning

confidence: 99%

Moisture Sensitivity of Asphalt Mixtures using Cycling Pore Pressure Conditioning

Sulejmani

Said

Agardh

et al. 2019

Transportation Research Record

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“…The specimens required for the tests were cored direct from the +ield, both cylindrical (for IDT tests) and prismatic (for the 4PBB tests). The procedure allowed evaluating the actual in situ density condition, as mixtures produced in an asphalt plant and in the laboratory may display differences in performance (Rahbar-Rastegar and Daniel, 2016). Binder content for the hot mix asphalt was 5.24% by weigh and featured apparent speci+ic gravity of 2.289.…”

Section: Laboratory Testsmentioning

confidence: 99%

Fatigue behavior study of a dense graded HMA using the four point bending beam test aided by an in-situ instrumentation at BR-116/RS, Brazil

et al. 2020

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A fadiga é caracterizada pela deterioração estrutural de um material quando submetido a repetidos esforços de tensão-deformação. O ensaio laboratorial comumente empregado no Brasil para análise de fadiga em misturas asfálticas é o ensaio de tração indireta (IDT). Como alternativa ao ensaio IDT, o ensaio de flexão em quatro pontos (4PBBT) submete o material a um estado de tensões mais realístico em relação ao campo. Este trabalho avaliou o comportamento à fadiga de uma mistura asfáltica com ligante modificado por polímero (PG76-11) usando os ensaios IDT e 4PBBT. Um segmento da rodovia BR-116/RS, pavimentado com o mesmo material, foi instrumentado para monitorar as respostas mecânicas na camada asfáltica, permitindo a avaliação do material sob condições de tráfego real, e através do monitoramento ao longo do tempo, permitindo melhor entendimento do desgaste estrutural. Em relação aos ensaios laboratoriais, o ensaio 4PBBT apresentou uma melhor relação com o observado em campo.

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“…Successful results have also been achieved by adding this material to asphalt mixes [25]. Reclaimed asphalt pavement (RAP) is a very commonly reused material, and it is mainly employed in subbase layers and bituminous layers [26][27][28][29]. AC with high proportions of RAP can exhibit similar mechanical performance [30].…”

Section: Introductionmentioning

confidence: 99%

Mastic asphalt modified with recycled polyurethane foam

2018

JCE

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Lijevani asfalt s dodatkom reciklirane poliuretanske pjene U radu se analizira mogućnost upotrebe reciklirane poliuretanske pjene kao veziva/ modifikatora za lijevani asfalt. Rezultati pokazuju da se tvrđi bitumen dobiva s povećanjem poliuretanske pjene do 5 % kada obradivost mješavine postaje nepovoljna. Proizvedena je mješavina lijevanog asfalta s 4 % poliuretanske pjene u bitumenu. Zabilježena je manja vrijednost dubine utiskivanja u usporedbi s uzorkom bez dodataka te je ustanovljeno da se modificirani lijevani asfalt može koristiti na cestama s teškim prometnim opterećenjem. Dobiveni rezultati pokazuju da postoje dobri izgledi za širu primjenu ovog otpadnog polimera.

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Laboratory versus plant production: impact of material properties and performance for RAP and RAS mixtures

Cited by 8 publications

References 7 publications

Moisture Sensitivity of Asphalt Mixtures using Cycling Pore Pressure Conditioning

Moisture Sensitivity of Asphalt Mixtures using Cycling Pore Pressure Conditioning

Fatigue behavior study of a dense graded HMA using the four point bending beam test aided by an in-situ instrumentation at BR-116/RS, Brazil

Mastic asphalt modified with recycled polyurethane foam

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