Characteristics of the Stone Matrix Asphalt Coarse using the Tabu River Stone North Toraja Regency

Abstract

The purpose of this research is to make use of Tabu River’s stones as a Stone Matrix Asphalt (SMA) mixture. The methodology used in this research is to do multiple inspections and examining characteristics of course, fine, and filler aggregates and devise a mixture composition of Stone Matrix Asphalt. The Marshall testing method was used to determine the mixture characteristics and Marshall Immersion Testing to ascertain Immersion Index (IP) / Residual Strength Index (IKS) / durability of the mixture with optimum asphalt content. The research was done at Road and Asphalt Laboratorium, Department of Civil Engineering, Christian University of Indonesia, Makassar, Indonesia. The research demonstrated that the composition of aggregates produced by Tabu River’s Stones at Tikala Sub-District fulfills the specifications of Bina Marga 2018 as a paving material. Marshall Examination showed the characteristic mixture of Stone Matrix Asphalt with asphalt levels of 6.00%, 6.25%, 6.75%, 7.00%. The Marshall Immersion Examination determined that the optimal asphalt level of 7.00% with an immersion index (IP)/Residual Strength Index (IKS)/Durability as high as 95.05% satisfies the Bina Marga 2018 requirements of at least 90%.