Investigation of asphalt properties in flexible pavement by using pellet hdpe as additive mixture for binder course

摘要

The permanent deformation or rutting is a longitudinal surface depression in the vehicle wheel paths. It can occur on any types of pavement either high or low volume road. The udaim of this study is to determine the permanent deformation properties of HDPE modified asphalt with Portland cement and Fly ash as filler by using Repeated Load udAxial Test that comply with Public Work Department in Malaysia. The percentage .of addictive added to asphalt mixture is up to 10%. A 80/100 penetration grade bitumen udwas used in this experiment and the grade is usually used in Malaysia. The 5% weight of bitumen content used to conduct this experiment. To achieve the permanent uddeformation on modified asphalt mixture, 20°C temperatures are selected to conduct the Repeat Load Axle Test (RLAT). The testing (RLAT) was used to determine the udpermanent deformation properties of asphalt mixture. The result indicates that the permanent deformation at 10% additive with Fly ash gives the optimum value udperformance for this research. It also shows the additive value of asphalt mixture resist rutting compared with unmodified sample. In addition, the HDPE additive would give udpositive affects to the permanent deformation performance of road at flexible pavement. In conclusion, the HDPE additive has capability to improve permanent deformation and udalso suitable to be used for road pavement.