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All Journal POROS TEKNIK Jurnal Teknik Sipil Jurnal Ilmu Pendidikan Indonesia Literasi: Jurnal Pengabdian Masyarakat dan Inovasi Journal of Research and Inovation in Civil Engineering as Applied Science Jurnal Inovasi Pendidikan Sains dan Terapan
Ravi, Ahmad
Unknown Affiliation
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Mathematics Physics Other

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Pemanfaatan Limbah Perusahaan Daerah (Cangkang Ale-Ale, Kernel, Serbuk Kayu, dan Lem Plywood) sebagai Pengganti Agregat Kasar Campuran Beton ‘Ain, Hurul; Polonia, Betti Ses Eka; Ravi, Ahmad
POROS TEKNIK Vol. 12 No. 1 (2020)
Publisher : P3M Politeknik Negeri Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31961/porosteknik.v12i2.894

Abstract

Kabupaten Ketapang Provinsi Kalimantan Barat merupakan daerah yang kaya dengan sumber daya alam laut dan perkebunan. Kerang Ale-ale merupakan sumber daya alam laut potensial. Sumber daya alam hasil perkebunan yaitu sawit yang dikelola oleh perusahaan dan menghasilkan limbah berupa cangkang kernel dan sumber daya alam hasil perkebunan yaitu kayu yang dikelola menjadi plywood yang menghasilkan limbah serbuk kayu dan lem sisa mesin produksi. Limbah-limbah tersebut belum dikelola secara maksimal. Hal tersebut menjadi suatu tantangan untuk melakukan penelitian supaya cangkang kerang Ale-ale, cangkang kernel, serbuk kayu plywood, dan lem plywood tersebut dapat digunakan sebagai bahan pengganti agregat kasar dalam campuran beton. Hasil penelitian menunjukkan bahwa pemanfaatan limbah-limbah berpotensi sebagai bahan pengganti agregat kasar dalam campuran beton ringan struktural serta bahan-bahan tersebut berpengaruh terhadap kuat tekan beton. Hasil Uji Kuat Tekan Beton Normal dengan umur 28 hari adalah 172,12 kg/cm2. Untuk bahan cangkang ale-ale diperoleh hasil kuat uji tekan sebesar 136,64 kg/cm2, bahan campuran kernel sebesar 25,02 kg/cm2, bahan serbuk kayu sebesar 40,41 kg/cm2, dan bahan lem plywood sebesar 177,05 kg/cm2. Limbah lem Plywood mempunyai nilai kuat tekan yang lebih tinggi dari beton normal dan mempunyai nilai kuat tekan yang paling tinggi di antara campuran limbah lainnya.
The EFFECT OF RISE HUSK ASH ON CONCRETE MIXING QUALITY FORMULA 'Ain, Hurul; Putranto, Alan; Polonia, Betti Ses Eka; Ravi, Ahmad
Jurnal Teknik Sipil Vol 4 No 1 (2020): Jurnal Gradasi Teknik Sipil - Juni 2020
Publisher : P3M Politeknik Negeri Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31961/gradasi.v4i1.878

Abstract

The effect of the addition of rice husk ash (rice husk ash) to the K-175 formula quality concrete mixture, as an aggregate mixture to the concrete compressive strength test using a Compression Testing Machine to get the compressive strength value of concrete and can be used as an alternative material as an additional material in making concrete in improving the quality of building construction. The study uses K-175 concrete quality characteristics as a test material. Test object in the shape of a cube with a size of 15cm x 15cm. With 4 variations in levels of addition of rice husk ash by 0%, 1.5%, 3.5%, and 5% by weight of cement. The husk ash used is the husk ash that escaped the 2.36 mm filter size. From each type of mixture made 9 test specimens, every 3 specimens for the age of concrete 7 days, 14 days and 28 days. Concrete mortar design using ASTM method. With material sources using fine aggregate from the Pawan Ketapang River and coarse aggregate from Merak, Banten. Stages of implementation include examining the nature of aggregate materials, sample making, and testing of concrete compressive strength.
Karakteristik Marshall Penggunaan Slag Sebagai Penambah Agregat Kasar Pada Campuran Asphalt Concrete Binder Course (AC-BC) Cahyadi, Lutfi; Suratmin, Suratmin; Ravi, Ahmad
Journal of Research and Inovation in Civil Engineering as Applied Science (RIGID) Vol 2 No 2 (2023)
Publisher : Teknik Sipil, Politeknik Negeri Ketapangg

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58466/rigid.v2i2.1168

Abstract

Asphalt concrete is one type of bending pavement that is commonly used in Indonesia. Asphalt concrete is a layer on highway construction consisting of a mixture of hard asphalt and aggregates that well graded, mixed, spread and compacted in hot state at a certain temperature. In this study, aggregate substitute materials the rough used is waste from steel smelting (Slag). The utilization of Slag as a substitute for coarse aggregates can be reducing environmental problems due to Slag being included in waste B3 (Hazardous and Toxic Materials) and its huge amount. Purpose from this study is to find out the physical properties of Slag used as a substitute material for coarse aggregates and the influence of the use of Slag against Marshall's characteristics in the AC-BC mixture. In this study Slag is used as a coarse aggregate enhancer material in AC-BC (Asphalt Concrete-Binder Course) mixture with asphalt content obtained from the optimum asphalt content of 6% and Slag used is 10% and 20%. The results of this study show that slag cannot be used as a coarse aggregate enhancing agent. The influence on Marshall's characteristics is also seen from the lower stability values of the normal mixture. For VFA, VIM, VMA, Flow and MQ values indicate that do not meet the specification
Bimbingan & Pelatihan KTI (Karya Tulis Ilmiah) Bagi Siswa-Siswi Smp Negeri Di Kabupaten Ketapang Ses Eka Polonia, Betti; Ravi, Ahmad; Desita Jumiar, Alfath
Literasi Jurnal Pengabdian Masyarakat dan Inovasi Vol 2 No 2 (2022)
Publisher : Pengelola Jurnal Politeknik Negeri Ketapang Jl. Rangga Sentap, Dalong Sukaharja, Ketapang 78813. Telp. (0534) 3030686 Kalimantan Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58466/literasi.v2i2.1405

Abstract

PKM programs are implemented to increase students' creativity in writing scientific papers improve critical thinking skills and problem-solving abilities. The implementation of PKM has presented information in the implementation of training activities and guidance for writing scientific papers. It can equip students to take part in regional and national LKTIs. The materials presented during the training were: 1) Understanding of KTI; 2) Preparation of KTI; 3) KTI Preparation Practice, and 4) Sharing and assistance in the preparation of KTI. At the end of the activity, 70% of students are expected to be able to make a KTI design. Furthermore, of the students who made the KTI design, 50% of them succeeded in making a scientific paper and were included in the regional and national LKTI
DIGITAL TEXTBOOK OF ENGINEERING MECHANICS WITH A SCIENCE PROCESS AND ETHNOSCIENCE APPROACH FOR VOCATIONAL COLLEGE STUDENTS Polonia, Betti Ses Eka; Ravi, Ahmad
Jurnal Ilmu Pendidikan Indonesia Vol 12 No 2 (2024): JURNAL ILMU PENDIDIKAN INDONESIA
Publisher : Master of Science Education Program, Postgraduate Program of Cenderawasih University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jipi.v12i2.3875

Abstract

Students at the vocational higher education level prepare to become graduates and are ready to be used by industry. The objectives of vocational higher education are to develop other skills and valuable training for students facing the industry world in the future. This skill is called scientific skill. Students need to be involved in various appropriate activities in the learning process to develop students' scientific skills. Students need scientific skills to design their work steps, process skills, and report practicum results in reports and presentations. Ethnoscience is related to the culture of a society. It contains local or original science, where knowledge has become part of a society's culture and is passed down from generation to generation. Students learn by integrating scientific science with original science so that students make more sense in learning. Living knowledge in society can be transformed into scientific knowledge and used as a good learning resource for students. Ethnoscience-based textbooks can be a suitable learning resource to support culture-based learning activities from the natural environment realized in textbooks and audio-visuals. The validation of ethnoscience-based textbooks obtained 3.28 points over 4, which includes the feasible-to-use category
Lembar Kerja Peserta Didik dengan Pendekatan Pemecahan Masalah Ravi, Ahmad; Ses Eka Polonia, Betti
Jurnal Inovasi Pendidikan Sains dan Terapan (INTERN ) Vol 3 No 2 (2024)
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Ketapang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58466/intern.v3i2.1699

Abstract

Problem-solving worksheets are educational resources that serve as a roadmap for instruction that give students methodical steps to hone their analytical, creative, and critical thinking abilities. This student problem-solving worksheet facilitates learning both individually and in groups by helping students comprehend the subject matter and practice skills. The purpose of this study is to evaluate the caliber of students' worksheets using a legitimate and useful technique to fluid material problem-solving. The four stages of a 4D research design—define, design, develop, and disseminate—are used in the process of product development. The study's findings demonstrate that employing a problem-solving strategy to validate students' worksheets produced a score for reliability of 1 with a suitable category. The proportion of responses from students
Membangun Generasi Tanggap Bencana: Edukasi dan Kesiapan Siswa Suratmin, Suratmin; Purnomo, Julyan; Faisal, M.Hanif; Kurnila, Nely; Kamil, Firmanilah; Ravi, Ahmad; Aida, Nur; Harahap, Saima Putrini R; Muttaqin, Khairul; Iswandi, Agung; Kalsum, Syf Umi; Putranto, Alan; Mastura, Syf
Literasi Jurnal Pengabdian Masyarakat dan Inovasi Vol 5 No 1 (2025)
Publisher : Pengelola Jurnal Politeknik Negeri Ketapang Jl. Rangga Sentap, Dalong Sukaharja, Ketapang 78813. Telp. (0534) 3030686 Kalimantan Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58466/literasi.v5i1.1720

Abstract

Indonesia is a country with a high risk of natural disasters, due to its position between major tectonic plates and in the Pacific Ring of Fire. This condition makes Indonesia prone to disasters. However, the low level of student understanding of disaster response measures shows the importance of disaster education from an early age. This community service activity aims to improve the understanding and preparedness of SMKN 1 Ketapang students in facing disasters through socialization and simulation of disaster management. The activity method consists of socializing disaster material with the help of visual aids and direct simulations guided by the BPBD team. Through the stages of preparation, socialization, and simulation, students were given an in-depth understanding of the types of disasters, evacuation techniques, and the use of light fire extinguishers (APAR). The evaluation results showed a significant increase in understanding from 30% to 80% after this activity was implemented. This increase shows that disaster education involving theory and practice is effective in building students' awareness and preparedness. This program is expected to be continued regularly to build a culture of disaster preparedness among school students.
Co-Authors 'Ain, Hurul Alan Putranto ‘Ain, Hurul Cahyadi, Lutfi Desita Jumiar, Alfath Faisal, M.Hanif Harahap, Saima Putrini R Iswandi, Agung Jayawarsa, A.A. Ketut Kalsum, Syf Umi Kamil, Firmanilah Kurnila, Nely Mastura, Syf Nur Aida Polonia, Betti Ses Eka Purnomo, Julyan Ses Eka Polonia, Betti Suratmin