Enhancing Performance Graded Specification of Asphalt Binder for More Sustainable Pavement in Singapore

DOI

10.2991/978-94-6463-972-8_8How to use a DOI?

Keywords

Superpave Performance Graded (PG) Specification; Non-recoverable creep compliance Jnr; Percent Recovery R; Fatigue Performance

Abstract

Polymer modified binder (PMB) is used in Singapore and the surrounding region for purpose of enhancing the durability and strength in asphalt pavements, particularly with high traffic volumes and heavy traffic loads. The selection of an appropriate PMB is crucial, as its properties significantly depend on the type of modifiers, content percent, and binder-modifiers compatibility. The Superpave Performance Graded (PG) specification was developed in the 1990s to characterize the properties and performance of asphalt binders. In Singapore, the PG specification has been used to specify the properties of PMBs used in asphalt pavements for highways and airport pavements. The local specification focuses mainly on the performance at high temperature mainly rutting resistance due to the hot climate conditions. However, binder’s rutting factor (G*/sin δ) by the Superpave PG specification does not correlate well to the asphalt mixture’s rutting based on research studies. To address the issue, the multiple-stress creep and recovery (MSCR) test was introduced as improvement to the Performance Graded specification. The current study aims to evaluate the performance of different modified binders using the Superpave PG specification as well as MSCR tests. Five types of PG 82 binders were tested which include four PMBs from different suppliers and one recycled plastic (RP) modified binder. The results showed that the PG 82 binders showed significantly different performance when tested using the MSCR test. The study also demonstrated that the MSCR test can provide more accurate assessment of the modified binders and will provide a more durable and sustainable asphalt pavement if included in the current binder specification.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Aye Nandar Win Maung
AU  - Tiah Guo Wei
AU  - Lee Yang Pin Kelvin
AU  - Ho Nyok Yong
PY  - 2025
DA  - 2025/12/29
TI  - Enhancing Performance Graded Specification of Asphalt Binder for More Sustainable Pavement in Singapore
BT  - Proceedings of the 14th Asia-Pacific Conference on Transportation and the Environment (APTE 2025)
PB  - Atlantis Press
SP  - 72
EP  - 82
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-972-8_8
DO  - 10.2991/978-94-6463-972-8_8
ID  - Maung2025
ER  -