Towards a new mix design method for asphalt mixtures containing rap

Gaetano Di Mino, Andre-Gilles Dumont, Nicolas Bueche, Sara Bressi

Risultato della ricerca: Conference contribution

Abstract

Recycling is one of the most important aspects to conceive the new construction or rehabilitation of sustainable road infrastructures. Even if Reclaimed Asphalt Pavement (RAP) is commonly used in the practice, its presence may lead to some critical aspects due to the physical and chemical phenomena occurring during the new mix process. For instance, the formation of RAP clusters during a new mix may inhibit the uniform distribution of the virgin binder as well as cause changes in the design grading curve of the mixture. Indeed, laboratory results demonstrate that small-size RAP particles stick together forming clusters. The amount of clusters depends on different parameters observed: The percentage of RAP bitumen trapped in the small-size fractions, the dimension of the grains and the percentage of RAP. Moreover, the partial re-Activation of the aged binder and the quality of the RAP aggregates should be considered in the design of a new mixture to ensure the same performance level as for a traditional mix. Therefore with the aim of meeting these needs this study helps, together with other initiatives, to address the challenge of defining a new mix design approach for HMA including (hot) RAP by taking into account the physical phenomena occurring during a new mix
Lingua originaleEnglish
Titolo della pubblicazione ospite8th International Conference on Maintenance and Rehabilitation of Pavements, MAIREPAV 2016
Numero di pagine9
Stato di pubblicazionePublished - 2016

Fingerprint

Asphalt mixtures
Asphalt pavements
Binders
Patient rehabilitation
Recycling
Chemical activation

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Civil and Structural Engineering

Cita questo

Di Mino, G., Dumont, A-G., Bueche, N., & Bressi, S. (2016). Towards a new mix design method for asphalt mixtures containing rap. In 8th International Conference on Maintenance and Rehabilitation of Pavements, MAIREPAV 2016

Towards a new mix design method for asphalt mixtures containing rap. / Di Mino, Gaetano; Dumont, Andre-Gilles; Bueche, Nicolas; Bressi, Sara.

8th International Conference on Maintenance and Rehabilitation of Pavements, MAIREPAV 2016. 2016.

Risultato della ricerca: Conference contribution

Di Mino, G, Dumont, A-G, Bueche, N & Bressi, S 2016, Towards a new mix design method for asphalt mixtures containing rap. in 8th International Conference on Maintenance and Rehabilitation of Pavements, MAIREPAV 2016.
Di Mino G, Dumont A-G, Bueche N, Bressi S. Towards a new mix design method for asphalt mixtures containing rap. In 8th International Conference on Maintenance and Rehabilitation of Pavements, MAIREPAV 2016. 2016
Di Mino, Gaetano ; Dumont, Andre-Gilles ; Bueche, Nicolas ; Bressi, Sara. / Towards a new mix design method for asphalt mixtures containing rap. 8th International Conference on Maintenance and Rehabilitation of Pavements, MAIREPAV 2016. 2016.
@inproceedings{fe2b493c661f472591be5617549b263c,
title = "Towards a new mix design method for asphalt mixtures containing rap",
abstract = "Recycling is one of the most important aspects to conceive the new construction or rehabilitation of sustainable road infrastructures. Even if Reclaimed Asphalt Pavement (RAP) is commonly used in the practice, its presence may lead to some critical aspects due to the physical and chemical phenomena occurring during the new mix process. For instance, the formation of RAP clusters during a new mix may inhibit the uniform distribution of the virgin binder as well as cause changes in the design grading curve of the mixture. Indeed, laboratory results demonstrate that small-size RAP particles stick together forming clusters. The amount of clusters depends on different parameters observed: The percentage of RAP bitumen trapped in the small-size fractions, the dimension of the grains and the percentage of RAP. Moreover, the partial re-Activation of the aged binder and the quality of the RAP aggregates should be considered in the design of a new mixture to ensure the same performance level as for a traditional mix. Therefore with the aim of meeting these needs this study helps, together with other initiatives, to address the challenge of defining a new mix design approach for HMA including (hot) RAP by taking into account the physical phenomena occurring during a new mix",
author = "{Di Mino}, Gaetano and Andre-Gilles Dumont and Nicolas Bueche and Sara Bressi",
year = "2016",
language = "English",
isbn = "978-981-11-0449-7",
booktitle = "8th International Conference on Maintenance and Rehabilitation of Pavements, MAIREPAV 2016",

}

TY - GEN

T1 - Towards a new mix design method for asphalt mixtures containing rap

AU - Di Mino, Gaetano

AU - Dumont, Andre-Gilles

AU - Bueche, Nicolas

AU - Bressi, Sara

PY - 2016

Y1 - 2016

N2 - Recycling is one of the most important aspects to conceive the new construction or rehabilitation of sustainable road infrastructures. Even if Reclaimed Asphalt Pavement (RAP) is commonly used in the practice, its presence may lead to some critical aspects due to the physical and chemical phenomena occurring during the new mix process. For instance, the formation of RAP clusters during a new mix may inhibit the uniform distribution of the virgin binder as well as cause changes in the design grading curve of the mixture. Indeed, laboratory results demonstrate that small-size RAP particles stick together forming clusters. The amount of clusters depends on different parameters observed: The percentage of RAP bitumen trapped in the small-size fractions, the dimension of the grains and the percentage of RAP. Moreover, the partial re-Activation of the aged binder and the quality of the RAP aggregates should be considered in the design of a new mixture to ensure the same performance level as for a traditional mix. Therefore with the aim of meeting these needs this study helps, together with other initiatives, to address the challenge of defining a new mix design approach for HMA including (hot) RAP by taking into account the physical phenomena occurring during a new mix

AB - Recycling is one of the most important aspects to conceive the new construction or rehabilitation of sustainable road infrastructures. Even if Reclaimed Asphalt Pavement (RAP) is commonly used in the practice, its presence may lead to some critical aspects due to the physical and chemical phenomena occurring during the new mix process. For instance, the formation of RAP clusters during a new mix may inhibit the uniform distribution of the virgin binder as well as cause changes in the design grading curve of the mixture. Indeed, laboratory results demonstrate that small-size RAP particles stick together forming clusters. The amount of clusters depends on different parameters observed: The percentage of RAP bitumen trapped in the small-size fractions, the dimension of the grains and the percentage of RAP. Moreover, the partial re-Activation of the aged binder and the quality of the RAP aggregates should be considered in the design of a new mixture to ensure the same performance level as for a traditional mix. Therefore with the aim of meeting these needs this study helps, together with other initiatives, to address the challenge of defining a new mix design approach for HMA including (hot) RAP by taking into account the physical phenomena occurring during a new mix

UR - http://hdl.handle.net/10447/358712

M3 - Conference contribution

SN - 978-981-11-0449-7

BT - 8th International Conference on Maintenance and Rehabilitation of Pavements, MAIREPAV 2016

ER -