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INFLUENCE OF PEAT WATER ON MECHANICAL PROPERTIES OF COCONUT SHELL AND FLY ASH BASED CONCRETE Yulin Patrisia; Topan Eka Putra
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 7 No. 2 (2019): Journal Balanga Edisi Juli-Des 2019
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/balanga.v7i2.1542

Abstract

This study aimed to determine the influence of peat water on the mechanical properties of the paving block (compressive strength and water absorption) using coconut shell waste and fly ash as raw material. The background of the research were the lack utilization of fly ash, preparation for the handling and utilization of fly ash from power station at Pulang Pisau and Tumbang Kajuei (under construction), and the utilization of coconut shell to be more effective and economical. Paving block specimens were immersed in peat water to determine the effect of peat water and the rest were immersed in plain water. This experiment used fly ash as a partial replacement of cement and 2% coconut shell as a partial replacement of fine aggregate. The results of the analysis showed that: (a) Paving block using fly ash and coconut shells which were immersed in plain water experienced the increase in compressive strength and the decrease in water; (b) Paving block using fly ash and coconut shells soaked in peat water showed that by the increase of age, compressive strength was decrease and water absorption was increase; (c) The compressive strength of paving block specimens immersed in plain water and peat water showed relatively similar values at 7 and 28 days age, (d). Water absorption in paving block specimens soaked both in plain water and peat water showed relatively similar values at 7 days age, but at 28 days age the specimens immersed in peat water had greater water absorption.
Persepsi Guru dan Siswa terhadap Pembelajaran Tatap Muka (PTM) Terbatas pada Masa Pandemi Covid-19 Sekolah Dasar di Pinggiran DAS Sungai Kahayan SDN-1 Desa Hanua, Kabupaten Pulang Pisau Revianti Coendraad; Whendy Trissan; Topan Eka Putra
Jurnal Ilmiah Kanderang Tingang Vol 13 No 2 (2022): Jurnal Ilmiah Kanderang Tingang
Publisher : FKIP Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/jikt.v13i2.167

Abstract

Many students feel bored studying online due to the impact of the Covid 19 pandemic since March 2020 because they cannot interact directly with their teachers and friends. On March 30, 2021, 4 Ministerial Joint Decrees (SKB) were issued, namely the Minister of Education and Culture, Minister of Religion, Minister of Health and Minister of Home Affairs Number 03/KB/2021, Number 384 of 2021, Number HK.01.08/MENKES/4242/ 2021, Number 440-717 of 2021 concerning Guidelines for Organizing Learning During the 2019 Coronavirus Disease (COVID-19) Pandemic. Through this joint decision, the government encourages limited face-to-face learning (PTM) acceleration while still implementing strict health protocols. Since the publication of the Joint Decree of 4 ministers concerning Guidelines for Organizing Learning During the 2019 Corona Virus Disease (COVID-19) Pandemic, many schools have conducted face-to-face learning. A limited face-to-face learning process has been carried out from mid-July 2021 until now. Limited Face-to-Face Learning (PTM) was carried out in one of the elementary schools at SDN-1 in Hanua Village, which is located on the outskirts of the Kahayan River watershed, Pulang Pisau Regency. This school as a whole has 8 teachers and 33 students, which in the implementation of limited PTM are scheduled from the school. The type of research used is a descriptive qualitative research approach. The place where the research was carried out at the research subject was a source for obtaining information and information from the research desired in this study. The subjects were teachers and high school students at SDN-1 Hanua Village, Pulang Pisau Regency. From the results of observations and interviews with teachers and students, it was found that according to teachers' perceptions they strongly agreed with limited PTM during the pandemic because it was more effective in using direct learning methods and resources to students so that it was easier to coordinate learning in class than online because it is indeed a network in the village not smooth so that it becomes an obstacle to online meetings. Meanwhile, according to student perceptions, they stated that students were very happy with limited face-to-face meetings during the pandemic because they could interact with their friends and felt comfortable studying at school, conducting learning in question and answer classes and understanding better the lessons given by the teacher in class.