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Pengaruh Penambahan Pasir Sirkon, Abu Kayu Dan Fly Ash Pada Tanah Lempung Terhadap Daya Dukung Dan Kuat Geser Tanah AMANIA, AMANIA; Sarie, Fatma; Okrobianus, Okrobianus
PUBLIKASI RISET ORIENTASI TEKNIK SIPIL (PROTEKSI) Vol 3 No 2 (2021)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/proteksi.v3n2.p63-70

Tanah lempung yang diteliti berasal dari Desa Mantaren, Kecamatan Kahayan Hilir, Kabupaten Pulang Pisau, Provinsi Kalimantan Tengah. Tujuan dari penelitian ini menganalisis pengaruh pasir sirkon, abu kayu dan fly ash sebagai bahan stabilisasi tanah, dengan uji kuat geser dan kuat tekan bebas. Penelitian ini dilakukan uji sifat fisik tanah dan sifat mekanik tanah yaitu uji kuat geser tanah, uji kuat tekan bebas perencanaan campuran dengan persentase pasir sirkon, abu kayu, dan fly ash sekitar 5%, 10% dan 15%. Hasil penelitian sifat fisik tanah didapat nilai, kadar air (w) = 61,28%, berat isi tanah kering (gd) = 1,20 g/cm3; berat jenis (Gs) = 2,70, batas cair (LL) = 61,50%, batas plastis (PL) = 53,10%, batas susut (SL) = 21,21%, indeks plastisitas (PI) = 8,4%. Berdasarkan sifat fisik tanah asli, lanau dengan plastisitas sedang tanah ini termasuk ke dalam kelompok MH. Sedangkan berdasarkan klasifikasi AASHTO tanah tersebut merupakan tanah berlanau kelompok A-5 (4). Pengujian kuat geser yang dilakukan menghasilkan nilai daya dukung tanah (qult) sebelum distabilisasi sebesar 1,509 kg/cm2, setelah distabilisasi sebesar 4,362 kg/cm2. Pengujian kuat tekan bebas nilai daya dukung tanah (qult) sebelum distabilisasi sebesar 0,171 kg/cm2, setelah distabilisasi sebesar 0,642kg/cm2.

Innovation in Road Construction Materials: A Study on the Combination of Biochar and Cement in Improving Subgrade Bearing Capacity Respati, Rida; Salampak, Salampak; Sarie, Fatma; Jaya, Adi
JSE Journal of Science and Engineering Vol. 4 No. 1 (2025): Journal of Science and Engineering
Publisher : LPPI Universitas Muhammadiyah Kalimantan Timur (UMKT)

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

Road infrastructure development often faces significant challenges due to low bearing capacity of the subgrade, especially when dealing with peat soil. This condition can lead to excessive settlement, deformation, and premature damage to the road pavement, resulting in high maintenance costs. Peat soil is inherently poor in quality, making it uneconomical to use as a subgrade for road pavements. The condition of peat soil significantly impacts road construction in Central Kalimantan Province. Therefore, one effective way to address this issue is through soil stabilization. This research aims to explore the potential of biochar and cement as stabilizing agents to improve the bearing capacity of peat soil. The study involves a series of laboratory tests, including initial physical property tests of the original peat soil, as well as index and mechanical strength tests after the addition of a combination of biochar and cement. The biochar used in this research is derived from coconut shells.The conducted tests include compaction tests to determine the maximum dry density and optimum moisture content, and CBR (California Bearing Ratio) tests to evaluate the soil's bearing capacity. The variations in biochar and cement addition were: 5% biochar with 5% cement, 5% biochar with 6% cement, 5% biochar with 7% cement, and 5% biochar with 8% cement. The research results indicate that the addition of biochar to peat soil stabilization mixtures using cement significantly increases the CBR value. Specifically, adding 8% cement and 5% biochar to peat soil was able to increase the CBR value by up to 9% from the original soil's CBR of 2.2%. Therefore, it can be concluded that the combination of biochar and cement can transform peat soil into a usable subgrade for road construction

The Effect of Environmental Assurance Statements and Digital Reporting Platforms on the Relevance of Financial Information in Agricultural Sector Issuers Sarie, Fatma; Novitasari, Salwa Aulia; Arini, Rani Eka
West Science Interdisciplinary Studies Vol. 3 No. 09 (2025): West Science Interdisciplinary Studies
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsis.v3i09.2226

This study examines the effect of environmental assurance statements and digital reporting platforms on the relevance of financial information in agricultural sector issuers in Indonesia. The increasing demand for transparent, credible, and timely financial reporting that incorporates sustainability issues motivated this research. Using a quantitative approach, data were collected from 160 respondents through a structured questionnaire with a five-point Likert scale. The data were analyzed using SPSS version 25, employing validity and reliability tests, classical assumption tests, regression analysis, and hypothesis testing. The results reveal that environmental assurance statements significantly improve the relevance of financial information by increasing the credibility and reliability of disclosures. Similarly, digital reporting platforms significantly enhance relevance by improving accessibility, timeliness, and transparency of financial data. Simultaneous testing further confirms that both variables jointly strengthen the relevance of financial reporting. These findings contribute to the literature on financial reporting quality and provide practical implications for issuers, regulators, and investors in the agricultural sector, emphasizing the integration of sustainability assurance and digital transformation as strategic drivers of decision-useful financial information.

The Effect of Environmental Assurance Statements and Digital Reporting Platforms on the Relevance of Financial Information in Agricultural Sector Issuers Sarie, Fatma; Novitasari, Salwa Aulia; Arini, Rani Eka
West Science Interdisciplinary Studies Vol. 3 No. 09 (2025): West Science Interdisciplinary Studies
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsis.v3i09.2226

This study examines the effect of environmental assurance statements and digital reporting platforms on the relevance of financial information in agricultural sector issuers in Indonesia. The increasing demand for transparent, credible, and timely financial reporting that incorporates sustainability issues motivated this research. Using a quantitative approach, data were collected from 160 respondents through a structured questionnaire with a five-point Likert scale. The data were analyzed using SPSS version 25, employing validity and reliability tests, classical assumption tests, regression analysis, and hypothesis testing. The results reveal that environmental assurance statements significantly improve the relevance of financial information by increasing the credibility and reliability of disclosures. Similarly, digital reporting platforms significantly enhance relevance by improving accessibility, timeliness, and transparency of financial data. Simultaneous testing further confirms that both variables jointly strengthen the relevance of financial reporting. These findings contribute to the literature on financial reporting quality and provide practical implications for issuers, regulators, and investors in the agricultural sector, emphasizing the integration of sustainability assurance and digital transformation as strategic drivers of decision-useful financial information.

Enhancing Sustainability in Urban Transportation with Innovative Mechanical Engineering Solutions for Electric Buses in Jakarta Sarie, Fatma; Tahir, Abdul; Pahrijal, Rival
West Science Interdisciplinary Studies Vol. 1 No. 10 (2023): West Science Interdisciplinary Studies
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsis.v1i10.299

This study looks into how novel mechanical engineering solutions for electric bus technology in Jakarta could change the industry, with an emphasis on improving sustainability, efficiency, and performance. Quantitative data was gathered through technical inspections, stakeholder questionnaires, and real-time monitoring. According to the results, buses with regenerative braking systems, lightweight construction, and cutting-edge drivetrain technologies consume 15% less energy. A comparative investigation revealed a 12% boost in overall speed and responsiveness and a 20% improvement in braking efficiency. The environmental benefits were highlighted by the environmental impact evaluations, which showed a notable 25% reduction in particulate matter and emissions. Positive responses to surveys conducted among passengers and bus operators demonstrated the practical viability and user pleasure of these advances. Although they recognized the potential, city officials stressed the need for a thorough and gradual implementation strategy. According to the research, creative mechanical engineering solutions might completely transform Jakarta's urban transportation system and serve as a template for effective and sustainable mobility.

The Effect of Agricultural Policy, Infrastructure, and Market Quality on the Sustainability of Food Crop Farming in West Java Lubis, Mitra Musika; Sarie, Fatma; Judijanto, Loso; Ramlan, Winarto
West Science Interdisciplinary Studies Vol. 1 No. 11 (2023): West Science Interdisciplinary Studies
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsis.v1i11.343

This research investigates the interplay between agricultural policy, infrastructure, market quality, and the sustainability of food crop agriculture in West Java through a quantitative analysis. A sample of 148 participants provided insights into their perceptions, contributing to a comprehensive understanding of the factors influencing agricultural sustainability. The measurement model demonstrated high reliability and validity, while the structural model revealed significant positive relationships between agricultural policy, infrastructure, market quality, and sustainability. Model fit indices confirmed the adequacy of the proposed framework. The findings have implications for policymakers and practitioners, guiding strategies to enhance agricultural sustainability. While the study enriches the existing literature, limitations and avenues for future research are acknowledged.

Measuring the Impact of Pesticide Use, Labor Availability, and Agricultural Technology on Vegetable Farming Efficiency in Central Java Sarie, Fatma; Harsono, Iwan
West Science Interdisciplinary Studies Vol. 2 No. 01 (2024): West Science Interdisciplinary Studies
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsis.v2i01.615

This research investigates the intricate dynamics influencing vegetable farming efficiency in Central Java, focusing on the interplay of Agricultural Technology, Labor Availability, and Pesticide Use. A quantitative approach employing Structural Equation Modeling (SEM) with Partial Least Squares (PLS) is employed, analyzing data from a diverse sample of 171 vegetable farms. The results reveal significant positive relationships between Agricultural Technology, Labor Availability, and Pesticide Use with Vegetable Farming Efficiency. The study sheds light on the nuanced associations among these factors, highlighting the potential benefits of technological adoption and skilled labor while emphasizing the need for sustainable and responsible pesticide use. Subgroup analyses based on farm size and geographical location provide insights into tailored interventions for different contexts. The findings contribute to the discourse on sustainable agricultural development, providing actionable insights for policymakers, farmers, and stakeholders in Central Java.

The Effect of Environmentally Friendly Transportation Implementation and Supporting Policies on Air Pollution Reduction in Central Kalimantan Sari, Ade Risna; Sarie, Fatma; Suparni, Sri; Berkah Nadi , Muhammad Abi; Karunia , Meutia Nadia
West Science Interdisciplinary Studies Vol. 2 No. 03 (2024): West Science Interdisciplinary Studies
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsis.v2i03.739

This research investigates the effect of green transport implementation and supporting policies on air pollution reduction in Central Kalimantan through quantitative analysis. The study employs survey methods to collect data from residents, policymakers, and stakeholders, focusing on perceptions of green transport adoption, policy effectiveness, and air quality. Structural Equation Modeling (SEM) using Partial Least Squares (PLS) path modeling is utilized to analyze the relationships between latent constructs and test research hypotheses. The findings reveal significant positive associations between environmentally friendly transportation implementation, supporting policies, and air pollution reduction. Specifically, both green transport adoption and policy effectiveness are found to positively influence perceptions of air quality. The results underscore the importance of promoting sustainable transportation solutions and implementing effective policy interventions to mitigate air pollution and promote environmental sustainability in Central Kalimantan. These findings contribute valuable insights to the literature on green transport strategies, policy interventions, and air pollution reduction, informing evidence-based decision-making and guiding the development of targeted interventions to address environmental challenges in the region.

Nur Puspita Sari: Analisis Kenaikan Nilai California Bearing Ratio (CBR) Laboratorium Tanah Lunak Dengan Penambahan Masker Medis Puspita, sari; Sarie, Fatma; Ikhwan Yani, M.
AGREGAT Vol 9 No 1 (2024)
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/ag.v9i1.21020

Limbah masker yang sulit didaur ulang secara alami menjadikan masalah bagi lingkungan. Masker memiliki sifat terluar menolak air, bagian tengah bersifat menahan virus, dan paling dalam bersifat menyerap air. Serat pada umumnya banyak digunakan untuk bahan stabilisasi tanah. Stabilisasi tanah dilakukan apabila tanah tersebut memiliki daya dukung yang buruk. namun sebelum dilakukannya stabilisasi tanah maka perlu adanya analisis tanah asli. Oleh karena itu penelitian ini bertujuan untuk menganalisis sifat fisik dan karakteristik tanah lunak, menganalisis nilai California Bearing Ratio (CBR) tanah lunak asli, dan menganalisis nilai CBR tanah lunak setelah diberikan bahan tambah masker medis.Tanah yang dianalisis merupakan tanah lunak yang berasal dari salah satu Desa Gambah Luar Muka, Kecamatan Kandangan, Kabupaten Hulu Sungai Selatan. Analisis dilakukan pada Laboratorium Mekanika Tanah, Jurusan Teknik Sipil, Fakultas Teknik, Universitas Palangka Raya untuk pengujian sifat fisik dan sifat mekanik tanah. Berdasarkan Hasil pengujian sifat-sifat fisik tanah asli didapat nilai, kadar air (w) = 37,26%; berat isi tanah (g)= 2,05 g/cm3; berat jenis (Gs) = 2,64; batas cair = 37,44%; Batas plastis = 33,87%; Indeks plastisitas = 3,57% ; batas susut = 7,79%; analisis saringan persentase lolos saringan no. 200 = 58,33%; Menurut sistem klasifikasi USCS tanah tersebut termasuk sebagai tanah ML yaitu tanah lanau tak organik; sedangkan menurut sistem klasifikasi AASHTO tanah diklasifikasikan sebagai tanah berlanau dalam kelompok A-4(2). nilai pemadatan laboratorium, untuk sampel tanah asli didapat OMC = 22,86%, dan gdmax = 1,58 g/cm3 dan untuk nilai CBRrencana tanah asli adalah 2,55%. Pada campuran masker medis 1,5% nilai CBR naik menjadi 3,82% meningkat sebesar 50,20% dari tanah asli, pada campuran masker medis 1,75% nilai CBR naik menjadi 5,56% meningkat sebesar 118,04% dari tanah asli, dan pada campuran masker medis 2% nilai CBR naik menjadi 8,40% meningkat 229,41% dari tanah asli pada masa pemeraman 3 hari.

The Role of Soil Type and Environmental Conditions in Increasing Soybean Production Judijanto, Loso; Suparwata, Dewa Oka; Sarie, Fatma; Safruddin, Safruddin; Sutrisno, Eko
West Science Agro Vol. 2 No. 02 (2024): West Science Agro
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsa.v2i02.943

Soybean stands as a critical crop globally, serving as a primary source of protein and oil. Optimizing soybean production is imperative to meet increasing demand amid evolving environmental and agronomic challenges. This qualitative analysis delves into the role of soil type and environmental conditions in enhancing soybean yield. Through a synthesis of existing literature and insights from interviews with key stakeholders, patterns and trends influencing soybean cultivation are identified. The findings underscore the complex interplay between soil properties, climatic factors, and agronomic practices in shaping soybean production dynamics. Tailored management strategies are essential for optimizing soil health, water management, and varietal selection to enhance soybean resilience and sustainability in the face of ongoing climate change and variability.

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