Muhammad Malik Ibrahim
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Studi Perancangan Campuran Beton Menggunakan Abu Batu Sebagai Agregat Halus Muhammad Malik Ibrahim; Priyanto Saelan
RekaRacana: Jurnal Teknil Sipil Vol 5, No 3: September 2019
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaracana.v5i3.108

Abstract

ABSTRAKSalah satu limbah yang dapat digunakan sebagai pengganti bahan pembuat beton adalah abu batu. Abu batu merupakan limbah dari proses pemecahan bongkahan batu. Ditinjau dari ukuran butirannya maka abu batu merupakan agregat halus. Abu batu memiliki penyerapan air yang lebih tinggi daripada pasir alami, maka dari itu untuk mendapatkan kelecakan campuran beton yang sama dengan kelecakan campuran beton menggunakan pasir alami, penggunaan abu batu sebagai agregat halus dalam campuran beton perlu tambahan air. Namun hal ini akan menyebabkan faktor air-semen bertambah. Sehingga hasil kuat tekan akan menurun. Hal ini sesuai dengan hubungan antara kuat tekan beton dengan faktor air-semen. Perekayasaan yang dilakukan adalah dengan menaikkan faktor granular (G) dan menaikkan kuat tekan rencana berdasarlan teori Dreux. Abu batu pada penelitian ini digunakan sebagai substitusi pasir alami dengan proporsi 0%, 20%, 40%, 60%, 80%, dan 100%. Hasil penelititan ini memperlihatkan penggunaan abu batu sebagai agregat halus lebih dari 40% akan sangat drastis menurunkan kuat tekan beton.Kata kunci: perekayasaan, substitusi, campuran beton, abu batu, agregat halus ABSTRACTOne of the wastes that can be used as a substitute for concrete materials is stone ash. Stone ash is a waste from the process of stone crusher. Consider from the size of the grain, stone ash as fine aggregate. Stone ash has a higher water absorption than natural sand, therefore to get the concrete workability that is the same as the concrete workability using natural sand, the use of stone ash as fine aggregate in the concrete mixture needs additional water. But this will cause the cement-water ratio to increase. So that the compressive strength will decrease. This is following the relationship between the compressive strength of concrete and the cement-water ratio. Engineering is done by increasing the granular factor (G) and increasing the compressive strength of the plan based on Dreux theory. Stone ash in this study was used as a substitute for natural sand with a proportion of 0%, 20%, 40%, 60%, 80%, and 100%. The results of this research show that the use of stone ash as fine aggregate of more than 40% will greatly reduce the compressive strength of the concrete.Keywords: engineering, substitute, concrete mixture, stone ash, fine aggregate
ANALISIS DESKRIPTIF KELENGKAPAN PENGISIAN DAN KETERLAMBATAN PENGEMBALIAN BERKAS REKAM MEDIS RAWAT INAP DI RSUD dr. R. SOEDARSONO KOTA PASURUAN Ratna Ratna; Muhammad Malik Ibrahim; Ika Puspita Sari
Jurnal Rekam Medis dan Informasi Kesehatan Indonesia Vol. 2 No. 1 (2022): Jurnal Rekam Medis dan Informasi Kesehatan Indonesia
Publisher : program studi Rekam Medis dan Infomasi Kesehatan ITSK RS dr Soepraoen Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62951/jurmiki.v2i1.24

Abstract

The number completeness of filling and returning medical record files on time in Indonesia is still relatively low. One of them happened at RSUD dr. R. Soedarsono, Pasuruan City. Where the results of the preliminary study showed in January, 83% incomplete medical record files and 17% complete medical records. Meanwhile, the return of medical record files was 79% late and 21% not late. The purpose of this study  to analyze the completeness of filling and delay in returning inpatient medical record files at Soedarsono Hospital, Pasuruan City. This type of research is quantitative descriptive with cross sectional approach. The sample of this study amounted 161 medical record files of BPJS patients were returned from inpatient room to the assembly unit. Data collection techniques using checklists and data analysis using univariate analysis. The results showed 28.6% (46 files) of complete medical record files, and 71.4% (115 files) were incomplete. Meanwhile, the return of medical record files was 55.9% (90 files) late and 44.1% (71 files) not late. The conclusion of this study is the completeness of filling and delay in returning medical record files at the dr.R.Soedarsono Hospital, Pasuruan City is still quite high.