PERFORMANCE EVALUATION OF STONE MATRIX ASPHALT (SMA) MIXTURE USING ADDITIONAL PALM BUNCH BIOASPHALT AND SEASHELL

• Main Author: Nurhasanah, Fitriani
• Format: Theses
• Language: Indonesia
• Subjects: Teknik tertentu, alat, perlengkapan, materi
• Online Access: https://digilib.itb.ac.id/gdl/view/78350
• Institution: Institut Teknologi Bandung

This research was a development in Stone Matrix Asphalt (SMA) mixture by using Palm Bunch Bioasphalt (BTS) and seashell. This study aims to determine the potential with the addition of a substitution percentage of 14% and 12% BTS from the total weight of Pen 60/70 Asphalt. Based on the modification of both aggregate and asphalt, the performance of the mixture was analyzed for volumetric compaction with Marshall compaction, draindown, resilient modulus, and fatigue resistance to the effect of shell substitution and BTS substitution in SMA mixture. Comparing the stiffness modulus between fatigue testing results and modulus testing using the Dynamic Testing System (DTS) tool. The SMA mixture will refer to the 2018 Bina Marga General Specifications. The SMA mixtures analyzed are smooth SMA mixtures in accordance with the specifications and modified SMA with the substitution of seashell, 12% BTS, and 14% BTS. Determination of KAO in each variation is carried out volumetric testing with marshall. Furthermore, Binder Draindown, Modulus with DTS tool and Indirect Tensile Fatigue Test (ITFT) with controlled stress loading mode were tested. Based on the results of the study that the mixture with substitution with 25% seashell on retained sieve no.16, if the KAO determination still needs to be reconsidered. But especially in this study, the KAO value was 7%. Where in the composition of the mixture means that the asphalt content that fills the cavity is getting more while the aggregate used is getting less. The results obtained have a stability value that meets the specifications > 750 kg. Based on this, the draindown value that occurs is not much different from the control SMA and the modulus and resistance to fatigue in the strain response that occurs with maximum limit of 430 ?e in the SMA variation with the use of seashells. Based on the research results, SMA mixtures with substitution with BTS have an increased resistance to marshall stability compared to control SMA. Where in SMA with 14% BTS substitution has the highest stability than other variations. This can be the potential of the use of BTS itself. Furthermore, the draindown that occurs in SMA mixtures with BTS substitution has an asphalt flow that tends to decrease. The modulus and fatigue tests obtained results on the strain response that occurred with maximum limit of 370 ?e in the SMA variation with the use of BTS. Where the SMA mixture with BTS has the highest modulus value and is followed by better fatigue resistance. So the potential of using BTS itself can be done further research. Based on the results of the stiffness modulus compared with the Shell equation, of the 12 data compared had 8 data with a ratio close to 1,0. Then 67% of the two data is not too much different. So that the test results of the trend data are still acceptable.