KINERJA CAMPURAN BETON ASPAL DENGAN BAN BEKAS SEBAGAI PENGGANTI SEBAGIAN AGREGAT TERHADAP FLEXURE FATIGUE TEST

• Main Author: Vivi
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/3169
• Institution: Institut Teknologi Bandung

THE PERFORMANCE OF ASPHALT CONCRETE CONTAINING SCRAPPED RUBBER TIRE ON A FLEXURE FATIGUE TEST, VIVL, ST, 2004, Transportation Engineering, Magister Program of Civil Engineering, Faculty of Planning and Engineering, Institute of Technology Bandung. The main objective of this research was to evaluate Asphalt Concrete performance containing scrapped rubber tire on flexure fatigue test using DARTEC machine. The test were conducted in the controlled stress, sinusoidal wave on 10 Hz of loading frequency and using three point bending mode of loading. Fatigue test were conducted at optimum binder content of bituminous mixtures, Bina Marga type IV gradation and carried out at room temperature. The type of scrapped rubber tire used is which contents of 50% and 100% as substitution of aggregate at fraction of No. 50. Marshall analysis showed that the mix without scrapped rubber tire has an optimum asphalt content of 7.1%, the mix containing 50% substitution of aggregate at fraction of No. 50 has an optimum asphalt content of 7.4% and the mix containing 100% substitution of aggregate at fraction of No.50 has an optimum asphalt content of 7.2%. The result of test indicated that fatigue life of bituminous mixtures containing scrapped rubber tire as substitution of aggregate was comparably low in comparison with the fatigue life of bituminous mixtures without scrapped rubber tire. Based on regression analysis result, the initial stiffness of mix without scrapped rubber tire, the mix containing 50% and 100% substitution of aggregate at fraction of No. 50 were 99,919 Mpa, 68,008 Mpa and 53,938 Mpa respectively. There is no difference on the crack mechanism between the bituminous mixtures containing scrapped rubber tire and without scrapped rubber tire, the cracks begin at the bottom in the middle of specimen and then propagate to the surface