Effect of buton's granular asphalt gradation on marshall stability of cold emulsified asphalt mixtures under wet condition

Abstract

Abstract This study aims to compare the performance of Cold Mix Asphalt with Buton’s Granular Asphalt taking into account gradation of BGA and gradation of BGA Mineral in a combined gradation under wet condition. The specimens were made with optimum bitumen content of 8%, water content of 5%, and Buton’s Granular Asphalt content of 6-13.5%. Marshall Stability testing refers to National Standard of Indonesia number 06-2489-1991. The maximal Marshall Stability of CEAM under wet condition which takes into account gradation of BGA in combined gradation is obtained at BGA content of 11.75%. The maximal Marshall Stability of CEAM under wet condition which takes into account gradation of BGAM in combined gradation is obtained at BGA content of 11%. The Marshall stability of CEAM taking into account BGA gradation in combined gradation were higher of 3-14% than which takes into account the gradation of BGA Mineral. Therefore, design gradation of Cold Mix Asphalt using Buton’s Granular Asphalt which be recommended in The Construction and Building Guideline, Public Work Department of Republic of Indonesia of 2006, should be revised to take into account gradation of BGA in combined gradation.

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