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All Journal Buletin Udayana Mengabdi Jurnal Energi Dan Manufaktur Bumi Lestari Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) Prosiding Seminar Nasional Teknoka International Journal of Engineering and Emerging Technology Natural Sciences Engineering and Technology Journal
Cok Istri Putri Kusuma Kencanawati
Program Studi Teknik Mesin Fakultas Teknik Universitas Udayana
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Pengaruh Perbandingan Fraksi Volume Getah Pinus Dan Epoxy Terhadap Biodegradasi Material Akustik Putu Deta Yoga Pramana; Cok Istri Putri Kusuma Kencanawati; I Ketut Gede Sugita
Jurnal Mettek: Jurnal Ilmiah Nasional dalam Bidang Ilmu Teknik Mesin Vol 8 No 2 (2022)
Publisher : Program Studi Magister Teknik Mesin Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/METTEK.2022.v08.i02.p07

Abstract

Pemanfaatan serat alam sebagai bahan penyusun suatu material baru telah banyak dikembangkan salah satunya yaitu material akustik, serat alam bersifat yang ramah lingkungan, harga lebih murah, sumber daya melimpah. Material akustik merupakan material yang difungsikan untuk meminimalisir tingkat kebisingan. Penelitian ini difokuskan untuk mengetahui pengaruh perbandingan fraksi volume getah pinus (90%, 87%, 84%, 81%) dan epoxy (0%, 3%, 6%, 9%) terhadap hasil uji biodegradasi material akustik menggunakan serat pelepah pisang (10%). Pengujian dilakukan dengan metode soil burial test (spesimen ditanam dalam tanah) selama 60 hari, pengamatan dilakukan setiap 7 hari sekali dan pemberian 20 mL air setiap 3 hari sekali. Dari empat sampel uji dengan total 12 spesimen uji yang dibuat memiliki rata-rata pengurangan massa yang berbeda. Sampel A rata-rata pengurangan massa sebesar 0,924%, sampel B 0,863%, sampel C 0,838%, dan sampel D 0,807%. Penurunan nilai pengurangan massa spesimen uji dikarenakan fraksi volume resin yang tinggi membuat serat terlindungi dari mikroorganisme pendegradasi dalam tanah, butuh waktu lama bagi mikroorganisme untuk menembus lapisan resin yang menempel pada serat, hal ini mengakibatkan mikroorganisme sulit berkembang karena kurangnya nutrisi dalam tanah, sehingga degradasi yang terjadi pada spesimen uji relatif rendah. Rendahnya pengurangan massa spesimen uji juga dipengaruhi oleh beberapa faktor kelembaban, cahaya, ph tanah dan banyaknya mikroorganisme yang terkandung dalam tanah. Perbedaan massa awal spesimen uji menyebabkan nilai pengurangan massa tidak linier pada penelitian ini. Utilization of natural fiber as a building material for a new material has been widely developed, one of which is acoustic material, natural fiber is environmentally friendly, cheaper prices, abundant resources. Acoustic material is a material that is used to minimize noise levels. This study was focused on knowing the effect of the volume fraction ratio of pine resin (90,87,84.81%) and epoxy (0.3,6,9%) on the results of the acoustic material biodegradation test using banana midrib fiber (10%). The test was carried out using the soil burial test method (specimens planted in the soil) for 60 days, observations were made every 7 days and 20 mL of water was given every 3 days. Of the four test samples with a total of 12 test specimens made have a different average mass reduction. Sample A averaged mass reduction of 0.0086%/day, sample B 0.0083%/day, sample C 0.0080%/day, and sample D 0.0076%/day. The decrease in the mass reduction value of the test specimen is due to the high volume fraction of the resin making the fiber protected from degrading microorganisms in the soil, it takes a long time for microorganisms to penetrate the resin layer attached to the fiber, this makes it difficult for microorganisms to grow due to lack of nutrients in the soil, resulting in poor degradation. occurs in the test specimen is relatively low. The low reduction in the mass of the test specimen is also influenced by several factors of humidity, light, soil pH and the number of microorganisms contained in the soil. The difference in the initial mass of the test specimen causes the mass reduction value to be non-linear in this study.
Pengaruh Waktu Perendaman terhadap Daya Serap Air dan Drop Test pada Paving Block Plastik-Pasir N P G Suardana; Rizki Andika Putra; C I P K Kencanawati
Prosiding Seminar Nasional Teknoka Vol 5 (2020): Prosiding Seminar Nasional Teknoka ke - 5
Publisher : Fakultas Teknik, Universitas Muhammadiyah Prof. Dr. Hamka, Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Garbage is a problem that exists in every province in Indonesia including th e Province of Bali. Most of it comes from plastic waste, which causes many problems for which the solution to handle them is still unsolved. Researchers used an alternative by means of the chopping process and the process of liquefying plastic waste which is used as a paving block. The materials used include sand with a grain size of 2 -3 mm as reinforcement and plastic waste as a cement substitute binder. Plastic and sand are mixed in a furnace heatedat 200 °C. The testing process for plastic-sand paving blocks uses several standards as a reference, such as SNI-03-0691 1996 for the quality requirements of concrete bricks and ASTM D440 -86 for the Standard Test Method of Drop Shatter Test for Coal. This research was conducted to determine the effect of water immersion time on the physical and mechanical characteristics of plastic-sand paving blocks. The immersion was carried out consecutively for 15, 30, 45, and 60 days, then a drop test was carried out from a height of 3m for each immersion time. The results showed that the immersion time affected the percentage value of absorption and damage to plastic-sand paving blocks. The highest value of absorption and damage was obtained in paving blocks with a ratio of 1: 4 and a long soaking time of 60 days.
Co-Authors I .G. P. Agus Suryawan I G. A. K. Diafari Djuni Hartawan I G. P. A. Suryawan I Gusti Bagus Wijaya Kusuma I Gusti Ngurah Priambadi I Ketut Adi Sugita I Made Bayu Artikajaya I Made Widiyarta I W BUDIARSA SUYASA Muhammad Raihan Dwi Wibowo Ni Made Dwidiani NPG Suardana Putu Deta Yoga Pramana Putu Lokantara Rizki Andika Putra