Marshall characteristics of asphalt concrete binder course (AC-BC) mixture containing modificated asbuton (retona blend 55) type

Abstract

The distribution of asphalt mixing plant (AMP) has not been evenly distributed in Indonesia, making it difficult to process road procurement and development in areas without AMP. It is currently available on the market of cold paving hot mix Asbuton products, comprising aggregates, grain Asbutons, perennials and other additives when necessary in accordance with the requirements of the specifications, which are spread and compressed at air temperature. The hot mixing is done by fabrication then marketed in packaged form. While the spraying and compaction is done cold (air temperature), so this product can also be an alternative choice especially for road construction in areas that have limitations of asphalt mixing units such as in remote areas and small islands. This study aims to determine the effect of modified Asbuton contents on the characteristics of Marshall AC-BC (Asphalt Concrete Binder Course). The results showed that the value of Marshall stability obtained on the content of modified Asbuton content of 4.5%, 5.0%, 5.5%, 6.0%, and 6.5% of 1218.57 kg, 1415.22 kg, 2251.01 kg, 1548.67 kg, and 1243.15 kg. From this result the most optimal is the content of modified Asbuton content 5.5% and the smallest content of modified Asbuton content 4.5%. Based on the relationship between the content of modified Asbuton content and stability, it was found that the content of optimum asphalt content was at 5.5%. The value of the test results is in accordance with the specification of effective asphalt level determination by the Bina Marga Indonesia requirement.

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