Rutting performanc
Rutting performance of
Polyethylene, Lime and Elvaloy modified Asphalt Mixes
Kamran Muzaffar Khan 1,
Hanifullah 2, Mujaddad Afzal 3, Faizan
Ali 4, Afaq Ahmed 5, Tahir Sultan6
1* Associate Professor,
Department of Civil Engineering, UET Taxila, Pakistan. [email protected]
2 Lecturer, Department of Civil Engineering, UET Taxila, Pakistan. [email protected]
3, 4 Research Associate, Department of Civil Engineering, UET Taxila,
Pakistan. [email protected]
5 Lecturer, Department of Civil Engineering, UET Taxila, Pakistan. [email protected]
6 Lecturer, Department of Civil Engineering, BZU Multan, Pakistan. [email protected]
Abstract: A key element in the performance of asphalt is its resistance to
rutting. Many modifiers can be used
to improve the properties of asphalt and to enhance its rut
resistance. This research is aimed to evaluate the
effectiveness of Polyethylene modified, Lime modified and Elvaloy modified
asphalt mixes in improving the performance of asphaltic concrete regarding
rutting resistance and to compare it with the performance of conventional NHA
(National Highway Authority Pakistan) Class-A mix. In this study the compacted
asphalt mixes were tested for resistance to rutting by subjecting all the
specimens to 10,000 repetitions of a loaded wheel and the rut depth for each
specimen was determined using wheel tracking machine. Polyethylene modified
mixes showed better resistance to rutting than all the other mixes and the
conventional NHA class-A mix showed the poorest performance. The order of
performance is polyethylene modified mix performed best, then lime modified
mix, then elvaloy modified mix and then conventional (unmodified) NHA class-A
mix. Results indicated that better quality asphalt concrete mixes regarding rut
resistance can be prepared using lime modified mixes, polyethylene modified
mixes and using polymer modified bitumen (PMB) in the HMA instead of unmodified
bitumen.[Kamran M.K, Haniffulah, Mujaddad A., Faizan A., Afaq A., Tahir
S. Rutting performance of Polyethylene modified, Lime modified and
Elvaloy modified Asphalt Mixes Life
Sci J 2013;10(7s): 363-371] (ISSN: 1097-8135).] http://www.lifesciencesite.com. 58
Keywords: Hot
Mix Asphalt (HMA), Rutting, Low Density Polyethylene (LDPE), hydrated lime,
PMB, Wheel tracker.
