PERFORMANCE ANALYSIS OF COCONUT SHELL BIO-ASPHALT (BTK) ON AC-WC HOT MIX ASPHALT OF RECLAIMED ASPHALT PAVEMENT (HMA-RAP)

• Main Author: Putri Syahfani, Arthika
• Format: Theses
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/72093
• Institution: Institut Teknologi Bandung

According to data from the Ministry of PUPR Bina Marga, the need for asphalt in 2021 will reach 1.2 million tons. If the annual need for asphalt is around that number, natural resource as asphalt will be required. Therefore, asphalt modification is needed. The use of RAP is considered effective in addressing domestic asphalt needs. Thus, some rejuvenators must be found to effectively use RAP or waste from old road pavements and utilize natural waste. Such as bioasphalt from coconut shells, which are processed to obtain oil from pyrolysis results. The use of coconut shell bio asphalt (BTK) as a rejuvenator in this study was reviewed by adding asphalt to RAP asphalt with a percentage of 35%, 40%, and 45% to the AC-WC HMA mixture. Testing the asphalt mixture was carried out by the marshall test, the resilience modulus using the UMATTA in KAO conditions, and the groove resistance test using the Wheel Tracking Machine. The results of bioasphalt research on RAP show: 1) the addition of BTK as a fluxing agent to a mixture containing up to 45% RAP can produce KAO that meets the AC-WC criteria, this shows that bioasphalt can be used as a rejuvenator; 2) based on testing the modulus AC-WC RAP 35% + BTK, AC-WC RAP 40% + BTK, AC-RAP 45% + BTK each having a resilient modulus of 2.25; 2.57 and 2.87 times greater than the resilient modulus of conventional AC-WC HMA or ACWC without RAP + BTK; 3) Testing the groove resistance on the 1260th track, the groove depth that occurs on HMA AC-WC without RAP + BTK, HMA AC-WC RAP 35% + BTK, HMA AC-WC RAP 40% + BTK and HMA AC-WC RAP 45 % + BTK at 25oC and 45oC were 1.25; 1.20; 1.19; 0.91; 0.58; 0.49; 0.32 and 0.21 mm. By the results of the advanced performance of asphalt mixtures, proves that the use of RAP above 30% can be carried out and provides better performance as well.