| Summary: | ABSTRAK
This paper discusses the resistance to permanent deformation behaviour of the dense graded AC-Plastiphalt mixture, asphaltic concrete mixture containing granulated recycled polyethylene waste plastic as aggregate replacement. The permanent deformation observed in this investigation is presented in the rutting value calculated from the data resulted from the dynamic creep test conducted in the laboratory.
The dynamic creep tests were conducted using the MATTA at two level test temperature, i.e. 40 and 60 °C. Dynamic creep test results indicated that the AC-Plastiphalt mixtures at higher test temperatures have better deformation resistance than the control mixtures and the LDPE incorporation increased the elastic recovery response of the AC-Plastiphalt. At both test temperature of 40 and 60 °C, the AC-Plastiphalt mixtures had lower estimated rut depth values compared to the control mixtures. For instance, the estimated rut depth for AC-Control increases from 2.3mm at 40°C to 4.5mm at 60°C (increase 1.9 times) after ten million standard axles wheel passes on the pavement. According to these results, it can be concluded that the AC-Plastiphalt has better resistance to permanent deformation compared to the conventional AC mixture,
Key words: Permanent deformation behaviour, asphaltic concrete mixture
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