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Natural rubber as a renewable and sustainable bio-modifier for pavement applications: a review

The increasing demand for non-renewable resources such as bitumen is a significant problem in the pavement industry. Flexible pavement primarily relies on and consumes a large quantity of bitumen, which has become a significant problem in terms of environmental sustainability and economic standpoint...

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Main Authors: Ansari, Anwaar Hazoor, Mohd Jakarni, Fauzan, Muniandy, Ratnasamy, Hassim, Salihudin, Elahi, Zafreen
Format: Article
Published: Elsevier 2021
Online Access:http://psasir.upm.edu.my/id/eprint/94338/
https://www.sciencedirect.com/science/article/pii/S0959652620357735?via%3Dihub
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spelling my.upm.eprints.943382023-04-05T02:42:18Z http://psasir.upm.edu.my/id/eprint/94338/ Natural rubber as a renewable and sustainable bio-modifier for pavement applications: a review Ansari, Anwaar Hazoor Mohd Jakarni, Fauzan Muniandy, Ratnasamy Hassim, Salihudin Elahi, Zafreen The increasing demand for non-renewable resources such as bitumen is a significant problem in the pavement industry. Flexible pavement primarily relies on and consumes a large quantity of bitumen, which has become a significant problem in terms of environmental sustainability and economic standpoints. Hence, researchers strive to explore alternative solutions such as bitumen modifiers to prolong the lifespan of flexible pavements. One such modifier is natural rubber (NR), and it has exhibited some beneficial effects for bitumen and asphalt mixtures. However, its adoption as a modifier in the pavement industry is constrained. Hence, the main objective of this review is to analyse the literature in depth to reveal the possibilities of alternative uses of NR as a modifier in the pavement industry. NR in the forms of latex and cup lump was observed to improve the physical, rheological, and mechanical performance of bitumen. The uncross-linked polymer of fresh NR can easily swell and be absorbed by bitumen. In addition, the effect of blending variables is interdependent on the physical properties of the modified bitumen. However, NR decreases the workability of the asphalt mixture, which can be compensated for by warm mix additives. The optimum content of NR for bitumen to improve pavement performance is 4–6 wt.%. Meanwhile, NR absorbs 24.9 kg of CO2 to produce 1 kg of NR latex. This paper also discusses improved field condition indicators of NR-modified pavements. Finally, recommendations for future research and development are provided to promote the utilisation of NR in the forthcoming sustainable pavement industry. Elsevier 2021-03-20 Article PeerReviewed Ansari, Anwaar Hazoor and Mohd Jakarni, Fauzan and Muniandy, Ratnasamy and Hassim, Salihudin and Elahi, Zafreen (2021) Natural rubber as a renewable and sustainable bio-modifier for pavement applications: a review. Journal of Cleaner Production, 289. art. no. 125727. pp. 1-16. ISSN 0959-6526 https://www.sciencedirect.com/science/article/pii/S0959652620357735?via%3Dihub 10.1016/j.jclepro.2020.125727
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description The increasing demand for non-renewable resources such as bitumen is a significant problem in the pavement industry. Flexible pavement primarily relies on and consumes a large quantity of bitumen, which has become a significant problem in terms of environmental sustainability and economic standpoints. Hence, researchers strive to explore alternative solutions such as bitumen modifiers to prolong the lifespan of flexible pavements. One such modifier is natural rubber (NR), and it has exhibited some beneficial effects for bitumen and asphalt mixtures. However, its adoption as a modifier in the pavement industry is constrained. Hence, the main objective of this review is to analyse the literature in depth to reveal the possibilities of alternative uses of NR as a modifier in the pavement industry. NR in the forms of latex and cup lump was observed to improve the physical, rheological, and mechanical performance of bitumen. The uncross-linked polymer of fresh NR can easily swell and be absorbed by bitumen. In addition, the effect of blending variables is interdependent on the physical properties of the modified bitumen. However, NR decreases the workability of the asphalt mixture, which can be compensated for by warm mix additives. The optimum content of NR for bitumen to improve pavement performance is 4–6 wt.%. Meanwhile, NR absorbs 24.9 kg of CO2 to produce 1 kg of NR latex. This paper also discusses improved field condition indicators of NR-modified pavements. Finally, recommendations for future research and development are provided to promote the utilisation of NR in the forthcoming sustainable pavement industry.
format Article
author Ansari, Anwaar Hazoor
Mohd Jakarni, Fauzan
Muniandy, Ratnasamy
Hassim, Salihudin
Elahi, Zafreen
spellingShingle Ansari, Anwaar Hazoor
Mohd Jakarni, Fauzan
Muniandy, Ratnasamy
Hassim, Salihudin
Elahi, Zafreen
Natural rubber as a renewable and sustainable bio-modifier for pavement applications: a review
author_facet Ansari, Anwaar Hazoor
Mohd Jakarni, Fauzan
Muniandy, Ratnasamy
Hassim, Salihudin
Elahi, Zafreen
author_sort Ansari, Anwaar Hazoor
title Natural rubber as a renewable and sustainable bio-modifier for pavement applications: a review
title_short Natural rubber as a renewable and sustainable bio-modifier for pavement applications: a review
title_full Natural rubber as a renewable and sustainable bio-modifier for pavement applications: a review
title_fullStr Natural rubber as a renewable and sustainable bio-modifier for pavement applications: a review
title_full_unstemmed Natural rubber as a renewable and sustainable bio-modifier for pavement applications: a review
title_sort natural rubber as a renewable and sustainable bio-modifier for pavement applications: a review
publisher Elsevier
publishDate 2021
url http://psasir.upm.edu.my/id/eprint/94338/
https://www.sciencedirect.com/science/article/pii/S0959652620357735?via%3Dihub
_version_ 1762394209769226240
score 13.211869

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