Karakteristik Marshall Campuran Aspal Emulsi Dingin Menggunakan Fly Ash Sebagai Filler

Ajeng Aissah; I Dewa Made Alit Karyawan; Ratna Yuniarti; Hasyim

doi:10.22487/renstra.v7i2.878

Authors

Ajeng Aissah Program Studi Magister Teknik Sipil, Fakultas Teknik, Universitas Mataram, Mataram, Indonesia
I Dewa Made Alit Karyawan Program Studi Magister Teknik Sipil, Fakultas Teknik, Universitas Mataram, Mataram, Indonesia dan Jurusan Teknik Sipil, Fakultas Teknik, Universitas Mataram, Mataram, Indonesia
Ratna Yuniarti Program Studi Magister Teknik Sipil, Fakultas Teknik, Universitas Mataram, Mataram, Indonesia dan Jurusan Teknik Sipil, Fakultas Teknik, Universitas Mataram, Mataram, Indonesia
Hasyim Jurusan Teknik Sipil, Fakultas Teknik, Universitas Mataram, Mataram, Indonesia

DOI:

https://doi.org/10.22487/renstra.v7i2.878

Keywords:

CAED, fly ash, Marshall characteristics, filler, asphalt emulsion

Abstract

Filler is a fine material that plays a crucial role in determining the performance of asphalt mixtures by influencing their physical and mechanical properties. This study aimed to evaluate the use of fly ash as an additional filler to enhance the performance of Cold Emulsified Asphalt Mixtures (CAED). An experimental method was employed through Marshall testing. The study involved material characterization, determination of the Optimum Residual Asphalt Content (KARO), and evaluation of the Marshall characteristics of CAED containing fly ash at replacement levels of 0%, 25%, 50%, 75%, and 100% by filler weight. A total of 15 specimens with a filler blend consisting of 50% fly ash and 50% stone dust were prepared to determine the KARO, followed by 15 additional specimens to evaluate the Marshall characteristics of each fly ash variation. The results demonstrated that the fly ash content significantly influenced the Marshall characteristics of CAED. Based on compliance with the applicable specifications, the optimum fly ash content was 50% of the total filler weight, which resulted in a balance of volumetric properties (VIM 3.56%; VMA 23.43%; VFA 84.93%) and mechanical properties (stability 658.4 kg; MQ 259.80 kg/mm). Meanwhile, the mixture containing 25% fly ash exhibited the best mechanical performance with the highest stability value among other fly ash variations (758.45 kg) and an MQ of 264.39 kg/mm. The addition of fly ash as a filler has been shown to improve the characteristics of Marshall CAED when compared to mixtures without fly ash. Further research is recommended to evaluate its long-term performance through the Wheel Tracking Test

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