EVALUATION OF HOT MIXED PERFORMANCE WITH ADDITION OF NATURAL RUBBER (LATEX) FOR ASPHALT CONCRETE BINDER COURSE (AC-BC)

• Main Author: Utami, Faradina
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/43588
• Institution: Institut Teknologi Bandung

This study aims to evaluate the performance of the Hot Asphalt Mixture for Asphalt Concrete Binder Course (AC-BC) with addition of natural rubber (latex) at variations of 0%, 2% and 3% by weight. The method used in this study is an experimental method in a laboratory consists of natural aggregate testing, rheology testing for asphalt pen 60/70 and asphalt pen 60/70 plus natural rubber (latex) and AC-BC mixture testing. The method used is Marshall Test to obtain optimum bitumen content (OBC) and another consists of UMATTA Resilient Modulus Test and strain controlled Four Points Fatigue Test. The addition of natural rubber in the AC-BC mixture reduced the optimum bitumen content (OBC) and increased the Marshall stability value, the optimum percentage is 3% natural rubber (latex) with the lowest OBC of 5.4% and the highest Marshall stability of 1380.645 kg. The UMATTA test with 2% natural rubber (latex) resulted in the highest Resilient Modulus value compared to the other two blends i.e 1691 MPa and 500 MPa.. Fatigue testing at strain 500 ??, 600 ??, and 700 ?? resulted that the mixture of AC-BC with 3% natural rubber produced the highest fatigue life value compared to the other two mixes, there were 101,110 cycles, 29,890 cycles, and 15,230 cycles, respectively. In general, the result of testing and its analysis concluded that the use of natural rubber (latex) can reduce the use of asphalt in the mixture. This can be relified by decreasing the value of OBC in the mixture with natural rubber. The mixture 3% natural rubber (latex) gives the highest resistance to fatigue cracks in the laboratory.