Laboratory Performance of Asphalt Concrete containing Foamed Bitumen from extraction of Buton Natural Asphalt
DOI:
https://doi.org/10.5614/jts.2024.31.3.2Keywords:
Foamed Bitumen, Asbuton, Penetration Asphalt, Marshall Stability, Indirect Tensile StrengthAbstract
This study examines the performance of asphalt concrete mixtures using foamed bitumen derived from extracted Buton natural asphalt (Asbuton) in comparison to conventional penetration asphalt (Pen 60/70). The research focuses on evaluating key parameters such as aggregate properties, Marshall stability, indirect tensile strength, and other mix characteristics, benchmarked against Indonesian national standards. Asbuton, known for its high viscosity and resistance to extreme conditions, offers an alternative binder for sustainable road infrastructure development. The results demonstrate that foamed Asbuton significantly outperforms Pen 60/70 in critical metrics. Foamed Asbuton achieved higher stability (2440.8 kg) and a superior tensile strength ratio (92.78%), reflecting its robustness under heavy loads and resistance to moisture-induced damage. In contrast, Pen 60/70 exhibited reduced stability and rigidity when subjected to the foaming process. The enhanced performance of foamed Asbuton is attributed to its dense structure and the benefits of the foaming process, which improves aggregate coating and binder distribution at lower mixing temperatures. This study highlights the potential of foamed bitumen technology, particularly when paired with high-performance binders like Asbuton, to improve the durability and sustainability of road infrastructure. Foamed Asbuton emerges as a promising material for high-stress applications and extreme environmental conditions.
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