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All Journal Sinergi Construction and Material Journal Jurnal Pengabdian Masyarakat Indonesia
Mudiono Kasmuri
Politeknik Negeri Jakarta
Humanities Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Public Health Social Sciences

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Effect of one-year corrosion on steel bridge materials in the maintenance stage with the Charpy impact test method Fauzri Fahimuddin; Mudiono Kasmuri; Rikki Sofyan; Syarif Junaidi; Latha MS
SINERGI Vol 27, No 2 (2023)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2023.2.002

Abstract

Corrosion of steel bridges is a major problem because it has the potential to reduce the performance of the structure over its lifetime. One factor that should not be reduced is fracture toughness, so this should be a very important concern in the maintenance program. Existing guidelines do not specify when corrosion conditions are hazardous and when corrosion conditions are not hazardous to structural performance. This study aims to explain how long corrosion does not cause danger, and when corrosion becomes dangerous. The Charpy Impact Test was used in this study to examine the effect of corrosion with a corrosion duration of weekly up to one year on fracture toughness. The series of tests in this research program used SM-490-type specimens which are steel plates commonly used for bridge structures. Specimens with variations in corrosion duration which were the result of immersion in sulfuric acid solution to simulate corrosion growth were then subjected to crack toughness testing. The toughness of each specimen was tested with a corrosion period starting from 1 week and so on up to 1 year to determine the level of fracture toughness. The results obtained from all tests showed that there was no decrease in the toughness of the corroded specimens for up to 1 year. The data presented in this study is very helpful for the designers and maintainers to plan corrosion treatment programs with clearer and more accurate considerations in assessing the structural integrity of steel bridges affected by corrosion.
PENGARUH ALKALI SILIKA REAKTIF PASIR TERHADAP KUAT TEKAN MORTAR RENDAMAN Mudiono Kasmuri; Ajeng Ayuningtias
Construction and Material Journal Vol. 5 No. 1 (2023): Construction and Material Journal Vol. 5 No. 1 Maret 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i1.4773

Abstract

Mortar is a building material made of cement, fine aggregate, and water. To get a good mortar strength, the properties, and characteristics of each of the mortar constituents must also be studied further. Aggregates containing silica can be reactive or non-reactive to alkaline elements in cement. The purpose of this study was to determine the effect of alkaline silica reactive sand on the compressive strength and flexural strength of mortar immersed in seawater. This research uses an experimental method, namely Rangkas sand, Bangka sand and Lumajang sand which have gone through the XRF (X-Ray Fluorescence) testing process to determine the percentage of compound content contained. The research method to determine the reactivity of the sand refers to ASTM C 1260. The compressive strength and flexural strength of the mortar were tested with two variations of immersion, namely by using fresh water and sea water. The immersion of the mortar was carried out for 7, 14, 28 and 56 days. From the results of testing the compressive strength and flexural strength of mortar at the age of 28 days had the same results for fresh water and seawater immersion, namely sand with high potential for reactive alkali silica has low compressive strength and flexural strength values ​​for all types of immersion. The freshwater immersion method has been used to test the mortar's flexural and compressive strength. It has a higher compressive and flexural strength value than the seawater immersion mortar, with a percentage ratio of 27.1% of compressive strength and 17.3% of flexural strength in mortar, with an immerse age of 28 days.
Pendampingan Peningkatan Bangunan Sekolah Gedung Riyadul Falah Menjadi Bangunan 2 Lantai Setelah Dilakukan Perkuatan Bangunan Mudiono Kasmuri; Ega Edistria; Sukarman Sukarman
Jurnal Pengabdian Masyarakat Indonesia Vol 3 No 3 (2023): JPMI - Juni 2023
Publisher : CV Infinite Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jpmi.935

Abstract

Yayasan Riyadul Falah merupakan Lembaga yang bergerak di bidang Pendidikan. Saat ini bangunan sekolah yang ada di Yayasan teresbut sudah difungsikan untuk proses atau kegiatan belajar mengajar. Namun masih mengalami kekurangan kelas ruangan belajar untuk para siswa sehingga dilakukan penambahan ruangan dengan meningkatlkan bangunan menjadi bangunan 2 lantai setelah dilakukan perbaikan dan perkuatan pada struktur bangunan. Tujuan dari kegiatan pengabdian ini adalah membantu pihak pengelola dalam melakukan pembangunan penambahan ruangan kelas dengan meningkatkan bangunan menjadi 2 lantai setelah dilakukan perbaikan dan perkuatan struktur bangunan yang telah dilakukan sebelumnya. Deskripsi kegiatan dimulai dengan persiapan tim survei untuk melakukan pemeriksaan kelayakan bangunan, berkoordinasi juga dengan pengelola Yayasan kemudian dilanjutkan dengan kegiatan gotong royong untuk melakukan pembangunan Gedung 2 lantai dari pekerjaan pembesian, pengecoran, pembuatan dinding ruangan, pembuatan ring balok atas dan pemasangan pintu, jendela ruangan kelas dan finishing.
Co-Authors Ajeng Ayuningtias Ega Edistria Fahimuddin, Fauzri Latha MS Rikki Sofyan Sukarman Sukarman Syarif Junaidi