Abstract:
Polymer modified bitumen (PMB) has been widely used in asphalt
mixtures as it provides better performance and durability as compared to unmodified
binders. Styrene Butadiene Styrene (SBS) is one of the most common additives
used in PMB.With the advent of bitumen technology, PMB can be further enhanced
to improve its performance in terms of properties such as viscosity, ageing resistance,
stiffness etc. This study aims to evaluate the effects of recycled plastics on the
performance of SBS-modified binder. The recycled plastics involved in this study
as partial substitute of SBS are low density polyethylene (LDPE) and high density
polyethylene (HDPE). The analysis was conducted using a series of tests which
include elastic recovery, dynamic shear test (before and after short term ageing),
viscosity test, multiple-stress creep and recovery test and storage stability.
