Development of Environmental Friendly Rubberized Asphalt

DOI

10.2991/apte-18.2019.11How to use a DOI?

Keywords

rubberized asphalt

Abstract

Greenhouse gas emission from the construction of asphalt pavement affect the environment during the production and laying of hot mix asphalt which are carried out at high temperatures. Asphalt mixes be produced and compacted at about 20oC to 40oC lower than the corresponding hot mix asphalt mixes. The lower temperatures reduce greenhouse carbon emission and energy used. In Singapore, about 32,700 tonnes of scrap tyres were produced in 2016 and recycling rate is 91% [1]. The applications of the recycled scrap tires are typically low in economic value and some are disposed in landfills, caused environmental problems and there is limited land fill space in Singapore. To maximize the use of scrap tires, a previous study was conducted to evaluate the use of crumb rubber (processed from scrap tires) in asphalt mix. The results showed that the rubberized asphalt containing crumb rubber has high potential to be used in Singapore roads. This study is a continuation of the previous research work, and aims to investigate the use of warm mix technologies to reduce the production and compaction temperatures of rubberized asphalt, which the type is open-graded asphalt mix. Two types of bitumen, straight-run bitumen of penetration grade 60/70 and polymer modified bitumen of performance grade PG76 were used as reference samples for comparison. Different types of warm mix additives were evaluated. The performance of the rubberized asphalt was determined based on various types of laboratory tests which include resilient modulus, Los Angeles abrasion loss, tensile strength ratio and dynamic creep tests

Copyright

© 2019, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Moe Lwin
AU  - Lee Kelvin
AU  - Ho Yong
AU  - Wang Xuechun
PY  - 2019/10
DA  - 2019/10
TI  - Development of Environmental Friendly Rubberized Asphalt
BT  - Proceedings of the 11th Asia Pacific Transportation and the Environment Conference (APTE 2018)
PB  - Atlantis Press
SP  - 268
EP  - 273
SN  - 2352-5401
UR  - https://doi.org/10.2991/apte-18.2019.11
DO  - 10.2991/apte-18.2019.11
ID  - Lwin2019/10
ER  -