ABSTRACT

Split Mastic Asphalt (SMA) mixture is mostly used on heavy traffic roads. SMA mixture has high percentage of coarse aggregate, it is better able to withstand deformation due to heavy vehicles, and consist of high levels of asphalt, that makes the mixture more durable. High levels of asphalt in SMA require an additive as fiber, polymer, filler, and PET which functions to stabilize and increase the strength of the mixture. This study to determine the performance of the Split Mastic Asphalt mixture by adding kapuk fiber as an additive. The method used is a quantitative comparison of the marshall SMA test results without the addition of additives and the SMA mixture with the addition of cotton fiber as an additive. The variation of cotton fiber content used in the mixture is 0.01%, 0.025%, 0.05%, 0.075% and 0.1% of weight mixture. Based on the results of the study the addition of cotton fiber to the mixture can improve Marshall performance in terms of strength, density, and durability of the mixture. The strength of the mixture with the addition of cotton fiber will increase to the optimum limit, which is 0.075% cotton fiber. The density of the mixture (density) with the addition of cotton fiber will increase. Durability based on flow and MQ values decreased, but increased again at high cotton fiber levels, which is 0.1%