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All Journal Matriks Teknik Sipil Cakrawala: Journal of Citizenship Teaching and Learning
Arjun Prasetyo
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Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Education Engineering Materials Science & Nanotechnology Other

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KAPASITAS GESER BALOK BETON BERTULANG HVFA MEMADAT SENDIRI DENGAN KADAR FLY ASH 60% TERHADAP BETON NORMAL Arjun Prasetyo; Agus Setiya Setiya Budi; Stefanus Adi Kristiawan
Matriks Teknik Sipil Vol 7, No 4 (2019): DESEMBER
Publisher : Program Studi Teknik Sipil FT UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (660.375 KB) | DOI: 10.20961/mateksi.v7i4.38477

Abstract

Fly ash adalah sisa-sisa pembakaran batu bara yang berbentuk partikel halus dan merupakan bahan anorganik yang terbentuk dari perubahan bahan mineral karena proses pembakaran dari proses pembakaran batubara. Sifat kimia fly ash memiliki kandungan silica (SiO2) yang tinggi, sifat inilah yang menjadikan fly ash digunakan sebagai bahan pengganti semen, sehingga pemanfataan fly ash sebagai bahan pengganti semen dapat mengurangi produksi semen. Penelitian ini akan mengkaji seberapa besar kapasitas geser balok beton bertulang High Volume Fly Ash - Self Compacting Concrete (HVFA - SCC) dengan kadar fly ash 60 % dan kemudian akan dibandingkan dengan balok beton normal. Benda uji yang digunakan balok beton bertulang dengan luas penampang 10 cm x 15 cm dengan panjang 150 cm. Pengujian kapasitas geser menggunakan alat loading frame dengan melakukan 2 titik pembebanan pada 1/3 bentang balok. Dari pengujian ini akan didapatkan grafik hubungan beban-lendutan serta perhitungan kapasitas geser balok beton HVFA-SCC 60%. Berdasarkan hasil penelitian ini kapasitas geser pengujian balok beton HVFA-SCC 60% memiliki nilai yang lebih besar dibandingkan dengan kapasitas geser hasil pengujian balok beton normal yang diuji pada umur 28 hari yakni sebesar 26,125 kN untuk HVFA-SCC 60% dan 21,500 kN untuk beton normal.
Challenges of Implementing Merdeka Curriculum in Pancasila Education Subjects in Elementary Schools Arjun Prasetyo; Anam, Edy Choirul; Rawanoko, Endrise Septina
CAKRAWALA: Journal of Citizenship Teaching and Learning Vol 2 No 1 (2024): June
Publisher : Academic Solution Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70489/92sr7689

Abstract

This study aims to identify the challenges faced by teachers in implementing Merdeka Curriculum in Pancasila Education subjects in grade 5 of Al-Islam 2 Elementary School in Jamsaren Surakarta, and formulate solutions to overcome these difficulties. This research uses a qualitative approach with a case study design. The study population consisted of 5th grade students, with a sample of class 5A consisting of 30 students. Data were collected through observation, semi-structured interviews, and literature study. The instruments used include observation sheets that contain aspects of planning, implementation, evaluation, challenges, and learning models. Data analysis was conducted through data reduction, data presentation, and conclusion drawing. The results showed that teachers experienced the main obstacle in the form of lack of time in implementing learning, which had an impact on not achieving a deep understanding of the material. In addition, student evaluation results are often not in accordance with teacher predictions, both in LOTS (Low Order Thinking Skill) and HOTS (Higher Order Thinking Skill) questions. The proposed solutions include the implementation of more efficient learning models such as flippedclassroom and more structured Project-Based Learning, as well as the use of learning technology to speed up the evaluation process. The study suggests that teachers pay attention to more effective planning time, as well as conducting early diagnostic analysis and reflection on evaluation results to adjust future questions and teaching methods.
Co-Authors Agus Setiya Setiya Budi Anam, Edy Choirul Rawanoko, Endrise Septine Stefanus Adi Kristiawan