THE EFFECT OF USING PALM KERNEL SHELL-MODIFIED ASPHALT ON THE DESIGN OF WARM MIX ASPHALT MIXTURES

• Main Author: Juantare, Mugianto
• Format: Theses
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/73576
• Institution: Institut Teknologi Bandung

This study aims to identify the performance of the hot rolled sheet-wearing course (HRS-WC) with gap gradations by adding the Evotherm additive to reduce the temperature and substituting palm kernel shells to substitute the fillers employing experimental methods in the laboratory. The researcher employed the Marshall method to determine the optimum asphalt content and the Universal Testing Machine (UTM) at 25 ????C and 35 ????C to test the resilient modulus. In this study, the permanent deformation test was carried out using the Hamburg Wheel Tracking Device (HWTD) in dry conditions with a temperature of 60 ????C, while the Indirect Tensile Strength (ITS) test was performed using the Marshall testing device. As a Warm Mix Asphalt (WMA) additive, 3% Evotherm could reduce the mixing and compaction temperatures of asphalt (PEN 60/70) from 159 ????C to 148 ????C and from 148 ????C to 138 ????C, respectively. In addition, adding palm kernel shells has increased the optimum asphalt content in the asphalt mixture and resulted in a lower resilient modulus value compared to the control WMA. Meanwhile, in a test under a high temperature of 35 ????C, the value of the resilient modulus was higher than that of the control WMA mixture. Based on the Hamburg Wheel Tracking Device test results, adding palm kernel shells resulted in more significant deformation, particularly the total deformation and deformation rate, than the control WMA. Moreover, in the Indirect Tensile Strength (ITS) test, the palm kernel shells produced a lower tensile strength ratio than the control WMA mixture.