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All Journal Jurnal Ecocentrism
I Gede Oka Darmayasa
Program Studi Teknik Lingkungan, Fakultas Teknik, Universitas Mahasaraswati Denpasar
Energy Engineering Environmental Science

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Kestabilan Lereng Model Tridatu Berkolaborasi Dengan Hydroseeding Berbasis Masyarakat (Studi Kasus: Desa Songan A dan B Kintamani) I Made Nada; Ida Bagus Suryatmaja; I Gede Oka Darmayasa
Jurnal Ecocentrism Vol. 2 No. 1 (2022): Jurnal Ecocentrism
Publisher : Program Studi Teknik Lingkungan Unmas Denpasar

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Abstract

Landslide disaster is one of the events that often occurs on the island of Bali, especially in Songan A and B Kintamani villages as happened on February 9, 2017 which claimed lives. One way ti characterize soil properties is to use geotechnical methods. Five slopes that have the potential for landslides in Songan A Village (dsa1, dsa2) and Songan B Village (dsb1, etc2, etc3) were characterized by physical soil properties such as cohesion, shear angle, density and slope geometry analyzed for slope stability using the Fellenius method manually. This study uses a quantitative approach, to determine the value of the factor of safety factor generated for each existing slope is 1.45, 1.35, 1.36, 1.13, 1.20 for the five slopes (FK < 1.5) if a landslide occurs, the landslide will piled up roads and houses. From the results of the characterization, mitigation is carried out in the form of slope arrangement of the Tri Datu Model in collaboration with community-based Hydroseeding 0.93 and 16.40 m3, 2.34 and 3.18 m3, 1.65 and 9.19 m3, 1.52 and 9.8 m3 all values of the factor of safety of slopes (FK > 1.5).
Pembuatan Batu Bata Dengan Memanfaatkan Abu Sisa Pembakaran Limbah Kayu I Gede Oka Darmayasa
Jurnal Ecocentrism Vol. 2 No. 2 (2022): Jurnal Ecocentrism
Publisher : Program Studi Teknik Lingkungan Unmas Denpasar

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Abstract

The wood processing industry in its production process will produce a waste or waste in the form of residual ash as a result of combustion in reducing the volume of waste that occurs. However, in the combustion process will produce a residue in the form of ash. The rest of this ash if not managed properly will cause pollution to the surrounding environment. One of the efforts made by utilizing the ashes from the combustion of wood waste as building materials is by using materials in a mixture of bricks. The research was conducted by mixing the remaining ash and clay in the proportions of 0%, 5%, 10%, 15%, 20% and 25%. From the results of the mixture tested the characteristics of the mixture such as compressive strength and water seepage. The results showed that the ash from the combustion of wood waste can be used as a material for making bricks as seen from the results of the physical characteristics test of the mixture.
Kuat Tekan Beton Dengan Substitusi Parsial Pecahan Keramik Pengganti Agregat Kasar Campuran Beton I Gede Oka Darmayasa
Jurnal Ecocentrism Vol. 3 No. 1 (2023): Jurnal Ecocentrism
Publisher : Program Studi Teknik Lingkungan Unmas Denpasar

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Abstract

With the rapid development at this time, the need for building materials continues to increase, especially concrete-forming aggregates. In this study, ceramic shards were used as an ingredient in the concrete mixture and compared with concrete in the same mixture composition. The research was conducted in the laboratory on the constituent materials in the concrete mix, namely cement, sand and crushed stone. To find out whether the alternative material, namely ceramic shards, meets the requirements, a test is carried out, namely through a concrete compressive strength test. The compressive strength test was carried out by making a mixture of normal concrete and concrete mixed with ceramic shards starting at a proportion of 10%, 20%, 30% and 40%. In this study, a cube test object measuring 15 x 15 x 15 cm was used. The mixed concrete mix was prepared in 8 trials for each proportion and the compressive strength test was carried out at 14 days and 28 days of age. The results of the research showed that the ceramic shards fulfill the requirements as aggregates in the concrete mix, according to the compressive strength value of the resulting concrete. namely concrete K225.
Penggunaan Limbah Batu Cadas Sebagai Agregat Kasar Dalam Campuran Beton I Gede Oka Darmayasa
Jurnal Ecocentrism Vol. 3 No. 2 (2023): Jurnal Ecocentrism
Publisher : Program Studi Teknik Lingkungan Unmas Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36733/jeco.v3i2.7311

Abstract

The current high development activity causes the need for building materials to continue to increase, especially concrete-forming aggregates. To overcome this problem, alternative materials are needed as substitute aggregates in the concrete mix. This study used rock waste as an ingredient in the concrete mix, and then the mixed results were compared with standard concrete in the same mix composition. The research was conducted in the laboratory, namely through testing the compressive strength of concrete using a cube test object measuring 15 x 15 x 15 cm. Mixed concrete mix was made in 8 trials with the composition of rock waste 10%, 20%, 30%, 40%, 50%. The compressive strength test was carried out on the specimens at 28 days. From the analysis of the compressive strength data, concrete with the utilization of rock waste in the concrete mix has a compressive strength value that increases according to the proportion of rock powder waste. From the compressive strength test results, it meets the requirements as planned concrete, namely K225.
Co-Authors I Made Nada Ida Bagus Suryatmaja