PENGARUH PENGGUNAAN LIMBAH KERAK TANUR CANGKANG SAWIT DENGAN BAHAN PENGIKAT RETONA BLEND 55 TERHADAP CAMPURAN LASTON AC-WC

Chaira Chaira, Muhammad Isya, Sofyan M. Saleh

Abstract


Abstract: Indonesia is an area that has oil palm plantations are quite extensive.Aceh Barat is one of the districts in the Province of Aceh which is boastful of palm oil industry.  Palm oil production generates waste including palm kernel shells and palm pulp; which is used to fuel the furnace/boiler/steam boiler during the extraction process of Crude Palm Oil (CPO). Shells and pulps that has been burned at high temperature ranging between 500°C to 700°C will deform into clinker which is later known as Palm Oil Clinker (POC). This study aims to investigate the physical properties of the POC to use as substitutes of fine aggregate in asphalt concrete mixture. The study also inspects the Marshall characteristics and the performance characteristics of the mixture of Asphalt Concrete Wearing Course (AC-WC) constituted of partial replacement of its fine aggregate.Furnace crush will be crushed where the results of the collision must pass the filter 8 (2.36 mm) and retained on a sieve No. 200 in accordance with the specifications for fine aggregate issued by Department of Public Work 2010.Results of the study displays that there are characteristics value of the AC-WC mixture which compliant with the Specification for Asphalt Concrete Mix by Department of Public Work 2010. The highest stability value revealed at 100/0 percentage furnace crust and split variation of the AC-WC mixture; however, this variant bears the lowest flow value with the consequences that the asphalt concrete mix is potentially high in crack failure thus it is unacceptable to use. An array of tests revealed that the ideal value for optimum durability of asphalt concrete mixture is at ≥75%; therefore, the mixture of AC-WC with 75/25 of percentage furnace crush and split variation is recommended by the study.

Keywords : Palm oil furnace crust, Marshall characteristics, Retona Blend 55

Abstrak: Indonesia merupakan daerah yang memiliki areal perkebunan kelapa sawit yang cukup luas. Aceh Barat adalah salah satu kabupaten di Provinsi Aceh merupakan daerah penghasil minyak kelapa sawit dengan limbah diantaranya cangkang kelapa sawit dan serat buah kelapa sawit. Limbah ini digunakan sebagai bahan bakar tanur/boiler/ketel uap yang digunakan dalam proses ekstraksi buah kelapa sawit menjadi crude palm oil (CPO). Cangkang dan serat sawit yang telah digunakan sebagai bahan bakar dapur tungku tanur dengan pemanasan 500o – 700o nantinya akan menjadi limbah tanur berupa kerak tanur cangkang sawit. Penelitian ini bertujuan untuk mengetahui sifat-sifat fisis material alternatif, dan mengetahui karekteristik Marshall serta mengetahui kinerja Campuran aspal beton AC-WC (Asphalt Concrete-Wearing Course) dengan menggunakan material alternatif sebagai pengganti sebagian agregat halus.Kerak tanur akan ditumbuk dimana hasil tumbukan harus lolos saringan No.8 (2,36 mm) dan tertahan pada saringan No. 200 sesuai dengan spesifikasi untuk agregat halus yang dikeluarkan oleh Bina Marga. Dari Hasil penelitian yang telah dilakukan menunjukkan bahwa nilai karakteristik pada campuran AC-WC memenuhi persyaratan. Nilai stabilitas tertinggi padavariasi perbandingan persentase penggunaan kerak tanur dan batu pecah 100/0 pada campuran AC-WC, tetapi mempunyai nilai flow terendah sehingga campuran beton aspal mudah mengalami keretakan sehingga tidak layak digunakan. Nilai durabilitas untuk campuran aspal beton AC-WC masih memenuhi persyaratan ≥ 75% dan dapat dianjurkan untuk campuran beton aspal AC-WC dengan variasi perbandingan persentase penggunaan kerak tanur dan batu pecah75/25%, karena memiliki nilai durabilitas tertinggi.

Kata kunci : Kerak Tanur Cangkang Sawit,Karakteristik Marshall, Retona Blend 55

Keywords


Palm oil furnace crust, Marshall characteristics, Retona Blend 55

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