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Scholars Journal of Engineering and Technology | Volume-3 | Issue-01
Utilization of Waste Plastic Materials as Bitumen-Blends for Road Construction in Oman
Sukaina Kazmi, Dubasi Govardhana Rao
Published: Jan. 15, 2015 |
128
303
DOI: 10.36347/sjet
Pages: 9-13
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Abstract
Studies are reported in the present work to focus on blending of waste plastic materials (in the form of
shredded polyethylene bags) being used as a binding agent in asphalt for road construction. This study compared the
results with the standards set by Oman as per MOTC (Ministry of Transportation & Communications) guidelines for
asphalt as a road laying material. Polyethylene was used as a binding agent along with bitumen (60/70) grade and dolerite
as the aggregate material. The studies showed that not only did the road become a receptacle for plastic waste, but it also
had a better strength and durability which were verified by determining the bulk density, stability test, flow test and the
density and voids analysis. The experiments have showed that 9 % of low density polyethylene to be an effective binder
proportion of polyethylene by weight of bitumen which were in agreement with previous studies. With a stability value
of 1590.2 kg, it was 32.5% greater than the standard of a minimum 1200kg; and a flow value of 2.9-3.0 mm was well
within the required range. The specific gravity of the material was 2.446. The VMA (voids in mineral aggregate) was 5%
while the given range was 4-7%, and the air voids were up to 66.7% showing that it was well within the standard range
of 50-70% as per MOTC standards.