Sustainable Use of Polymer in Asphalt Mixture: A Review

Abstract

Polymer modified asphalt (PMA) mixtures are commonly employed in flexible pavement and overlays with large traffic volumes. In contrast, a number of laboratory and field tests have been conducted to evaluate the performance of PMA with that of conventional hot mix asphalt (HMA) mixtures. This paper presents an overview of the various polymers utilised in asphalt mixtures and their effects on the rheological, morphological, physical, and mechanical properties of polymer-modified asphalt binders. According to a review of the relevant literature, a good modifier affects the failure characteristics of the binder, allowing it to withstand greater stresses and strains before failing. In asphalt pavement, adding polymers to asphalt binders to improve their qualities has a long history. Due to polymers' limited solubility, polymer-modified asphalt binders may have several disadvantages. In addition, a brief description of the general approach to mixing polymers is provided. A summary of the benefits and drawbacks of the most common polymers used to alter asphalt binders Styrene-butadiene-styrene (SBS), Styrene-butadiene–rubber (SBR), Polyethylene Terephthalate (PET), Polypropylene (PP), Polyvinyl Chloride(PVC) etc. are illusrated. The paper continues with a discussion of the lasting effects of PMAs on asphalt pavement. To evaluate the economic and environmental impacts, a life cycle assessment (LCA) is required.

The Performance of a Hybrid Asphalt Mixture in Modifying Hot Mix Asphalt Properties

“…15 showcases the correlations between stability, bulk density, and hybrid asphalt content. The maximum bulk density value for the 6% hybrid asphalt mixture was 2.36 g/cm 3 . Hence, the equation ( 4) representing the bulk density correlation is expressed as follows:…”

“…The maximum bulk density value of 2.38 g/cm 3 was observed for the 6% and 9% hybrid asphalt mixtures. Meanwhile, the lowest bulk density value of 2.35 g/cm 3 was calculated for the 3% hybrid asphalt mixture. The difference between the highest and lowest bulk density values of the hybrid asphalt was 0.03 g/cm 3 .…”

“…Meanwhile, the lowest bulk density value of 2.35 g/cm 3 was calculated for the 3% hybrid asphalt mixture. The difference between the highest and lowest bulk density values of the hybrid asphalt was 0.03 g/cm 3 . This outcome was attributed to the voids between the aggregate particles and the asphalt 60/70 in the asphalt mixture, in which the void spaces impacted the overall density of the mixtures.…”

“…Nevertheless, the conventional manufacturing process of hot mix asphalt (HMA) depends on virgin aggregates and asphalt, contributing to environmental issues and depleting finite natural resources. Waste material incorporations into asphalt mixtures have revealed a growing interest in addressing these challenges and promoting sustainable infrastructure development in recent years [2][3][4]. These modifiers can enhance specific properties of the binder and mixture of the modified asphalt.…”

Studi Komparasi Dampak Lingkungan Produksi Campuran Aspal Hangat Modifikasi Polimer EVA dengan Campuran Aspal Panas Skala Laboratorium Menggunakan Life Cycle Assessment (LCA)

“…Penelitian yang mencoba menganalisis dampak lingkungan dari konstruksi jalan aspal di Indonesia selama ini mencoba menganalisis dampak lingkungan dari pekerjaan pengaspalan jalan maupun perbandingan aplikasi konstruksi jalan aspal dan beton yang mengambil data berdasarkan panduan dari Intergovernmental Panel on Climate Change (IPCC) (Fistcar, 2020;Wirahadikusumah & Sahana, 2012). Selain itu, studi LCA mengenai aspal modifikasi polimer pun saat ini kebanyakan berfokus pada pencampuran langsung ke bitumen, yang disebut dengan metode campuran basah (wet mix), seperti penggunaan polimer plastik daur ulang serta lignin (Khater et al, 2021;Masri et al, 2022;Salehi et al, 2022). Metode pencampuran basah (wet mix) sendiri merupakan metode untuk memodifikasi bitumen sebagai bahan pengikat campuran menggunakan polimer, dimana polimer juga dapat dicampurkan langsung pada saat pencampuran bitumen dengan agregat, yang dinamakan metode pencampuran kering (dry mix) (Brasileiro et al, 2019;McNally & Pötschke, 2011).…”