RESILIENT MODULUS AND PERMANENT DEFORMATION PERFORMANCE OF GAP GRADED HOT ROLLED SHEET (HRS-WC) USING POLYMER MODIFIED ASPHALT STARBIT E-55

• Main Author: ANDY VIC SINUHAJI , CHRIST
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/21507
• Institution: Institut Teknologi Bandung

Failure criteria in a flexible pavement are fatigue and permanent deformation. Deformation may occur in both subgrade and asphalt layer. Generally, deformation that occurs in the asphalt layer is caused by overload and high pavement temperature. Addition of polymers is one of several solution to improve asphaltic rheological properties. Using polymer modified bitumen is expected to improve pavement performance. <br /> <br /> <br /> This aim of the study is to observe the performance of gap graded Hot Rolled Sheet Wearing Course (HRS-WC) by using polymer modified asphalt Starbit E-55, with <br /> <br /> experimental testing method in laboratory. Resilient modulus and resistance to permanent deformation become the performance indicators of both mixed types. <br /> <br /> <br /> The results of the laboratory test provide a greater value of resilient modulus than the results of theoretical calculations, and also showed an increase in resilient modulus value of asphalt mixture using polymer modified asphalt Starbit E-55 than asphalt Pen 60/70. This increase occurs at all temperatures, which is 10%, 6% and 37,5%. Result of Wheel Tracking Test showed that asphalt mixture using polymer modified asphalt Starbit E-55 have a greater resistance to permanent deformation <br /> <br /> than asphalt Pen 60/70, in terms of the total deformation value, dynamic stability and rate of deformation. For 60°C test temperature, total deformation occurring in both mixed types of gap graded Hot Rolled Sheet Wearing Course showed that rutting curve has reached the tertiary stage, where asphalt mixtures has failed.