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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Prosiding Seminar Nasional Sains dan Teknologi Terapan
Kurniawan, Mochammad Rizky
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Materials Science & Nanotechnology Physics

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Studi Pengaruh Korosi Terhadap Kapasitas Tarik Besi Tulangan Kurniawan, Mochammad Rizky; Pertiwi, Dewi; Istiono, Heri; Propika, Jaka; Komara, Indra
Prosiding Seminar Nasional Sains dan Teknologi Terapan 2023: Transformasi Riset, Inovasi dan Kreativitas Menuju Smart Technology dan Smart Energy
Publisher : Institut Teknologi Adhi Tama Surabaya

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Abstract

Korosi yang terjadi pada tulangan baja akibat terpapar klorida dianggap sebagai penyebab utama kerusakan struktur beton bertulang. Kontak langsung dengan pengaruh lingkungan dapat mengakibatkan terjadinya reaksi oksidasi yang mengakibatkan korosi. Metode kehilangan berat digunakan dalam perhitungan laju korosi dengan menggunakan variable waktu perendaman sehingga mendapatkan hasil berupa jumlah atau berat kehilangan akibat laju korosi yang terjadi. Terjadinya peningkatan berat hilang dan laju korosi yang terjadi seiring dengan lama waktu pada saat perendaman besi tulangan. Tetapi pada pengujian tarik, besi tulangan mengalami penurunan pada kuat tarik dan regangan yang terjadi dimana terpengaruh oleh besar dari laju korosi dan lama waktu perendaman besi tulangan. Berdasarkan pengujian didapatkan nilai berat hilang dan laju korosi terkecil dialami besi S10 dengan waktu 1 hari yaitu 2 gram 3,4389 Mpy , untuk yang terbesar S16 dengan waktu 2 minggu yaitu 109 gram 13,3873 Mpy. Sedangkan dari uji tarik didapatkan prosentase penurunan terkecil dan terbesar dialami oleh besi S13 dengan prosentase 2,35% pada 24 jam, dan 22,97% pada 336 jam. Penurunan elongitas terbesar dialami oleh besi S13 dengan nilai 4,67%.
Analysis of Learning Strategies of Students with Intellectual Disabilities Using E-LAPD-Based Liveworksheets in Chemical Compound Nomenclature Kurniawan, Mochammad Rizky; Santoso, Teguh; Sari, Rahmania Fitrah; Muchlis; Novita, Dian
Jurnal Penelitian Pendidikan IPA Vol 11 No 11 (2025): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i11.12986

Abstract

This study aims to analyze the learning strategies of students with intellectual disabilities using E-LAPD-based Liveworksheets on the nomenclature of chemical compounds by applying the UDL (Universal Design for Learning) approach. The research method used is a mixed of quantitative and qualitative. Quantitative analysis uses validation results and pretest and posttest scores. Pretest and posttest data were analyzed using N-gain. Qualitative analysis uses the results of interviews with students with intellectual disabilities, which will be analyzed using the NVivo application. The results of this study indicate that the application of the UDL (Universal Design for Learning) approach to students with intellectual disabilities is practical to implement. This is evidenced by the results of student interviews analyzed using the NVivo application using Cluster Analysis, grouping codes or themes based on their similarities in the text, producing a similarity matrix. In addition, this is evidenced by the pretest and posttest data analyzed using N-gain scores showing a good category with an N-gain score of ≥ 0.7. Based on these findings, it can be concluded that the application of the UDL (Universal Design for Learning) approach with E-LAPD to students with intellectual disabilities on the nomenclature of chemical compounds is practical to implement.
Co-Authors Dewi Pertiwi Dian Novita Indra Komara, Indra Istiono, Heri Jaka Propika MUCHLIS Sari, Rahmania Fitrah Teguh Santoso