PERFORMANCE ANALYSIS OF ASPHALT CONCRETE BINDER COURSE (AC-BC) AND HOT ROLLED ASPHALT USING PURE ASBUTON (FULL EXTRACTION)

• Main Author: Azka, Afina
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/46689
• Institution: Institut Teknologi Bandung

Asbuton production technology is currently being developed in order to make effective Asbuton, both in terms of function and number of uses, one them is Asbuton with full extraction. The use of pure Asbuton as an added material is expected to improve the rheological properties of asphalt and reduce the proportion of viscous in the mixture because the phase angel value decreases so that the mixture is more durable and more resistant to damage criteria, especially in fatigue. There are two mixes used in this researches, mixtures of Asphaltic Concrete Binder Course (AC-BC) and Hot Rolled Asphalt (HRA). Based on previous research, the optimum proportion of Asbuton content suggested to improve the rheological properties of asphalt are 8% and 10%. To obtain the improvement in the quality of asphalt mixtures performances, a research using 3 variations of Asbuton content in asphalt pen 60/70 that are 0%, 8% and 10%. The physical properties of asphalt were tested and compared with Bina Marga Specifications 2018, while the mixed performance was obtained through Marshall testing. Resilient modulus with Dynamic Testing System and fatigue strength with Four Point Bending Test. Based on the physical properties of asphalt testing showed that the addition of Asbuton has a smallest value of penetration, the highest softening point, the highest Penetration Index, and also the viscosity value gets greater so that the mixing and compaction temperatures have increased. Marshall test showed that increasing Asbuton content in asphalt pen 60/70 can increasing stability value both AC-BC and HRA. Based on the Marshall Immersion test the best IKS values are in the ACBC mixture with 10% Asbuton is 97.465%, in the HRA mixture with 8% Asbuton is 97.254%. Based on the DTS results, the value of Resilient Modulus (temperature 25?C) in the AC-BC mixture with 10% Asbuton increased by 25.88% and the HRA mixture with 10% Asbuton increased 55.88% compared to conventional mixtures. The results of fatigue testing with the Four Point Bending Test showed that the HRA mixture of 10% Asbuton produced a higher fatigue life value than AC-BC because HRA mixture was more flexible characterized by a small phase angle (?) value so that the mixture was more resistant to fatigue cracking. In terms of cost, the HRA 10% Asbuton mixture produces a lower cost than the other two mixes because the fatigue life of the HRA 10% Asbuton mixture is longer compared to other mixtures. In general, based on the results of testing and analysis shows that the HRA mixture with the addition of 10% Asbuton tends to be better than AC-BC mixture to produce an effective mixture both in terms of performance and cost. The addition of optimum levels of pure Asbuton in each mixture can be one solution to improve pavement performance.