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All Journal Jurnal Teknik Sipil AGREGAT Jurnal Serambi Engineering Jurnal PROTEKSI (Proyeksi Teknik Sipil) Media Ilmiah Teknik Sipil Jurnal Kacapuri : Jurnal Keilmuan Teknik Sipil Jurnal Teknika : Jurnal Teoritis dan Terapan Bidang Keteknikan Diteksi : Jurnal Pengabdian Kepada Masyarakat Serambi Engineering
Okta Meilawaty
Universitas Palangka Raya
Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Transportation

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Journal : AGREGAT

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Pemanfaatan Limbah Pasir Sandblasting Sebagai Material Perkerasan Kaku Layang, Samuel; Thathit Suprayogi; Wiratno; Okta Meilawaty; Renna Jessica Sihombing; Frans Putra Ganesa
AGREGAT Vol 10 No 2 (2025)
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/ag.v10i2.27798

Abstract

This study aims to determine the compressive strength and flexural strength of concrete using Sandblasting Sand waste and to determine whether concrete using Sandblasting Sand waste can be used as a rigid pavement material. To achieve these objectives, experimental research was carried out in the laboratory using 10 beam specimens. The coarse aggregate used was a combination of Banjarmasin Gravel and Merak Gravel with a proportion of 50% each. There are two variations of the mixture, namely a concrete mixture using Tangkiling Sand and a concrete mixture using Sandblasting Sand. From the test results, it was obtained that the concrete mixture using Tangkiling Sand had an average compressive strength of 22.57 MPa and a flexural strength (fs) of 36.33 kg/cm2. The concrete mixture using Sandblasting Sand has an average compressive strength of 26.55 MPa and flexural strength (fs) of 39.40 kg/cm2. Concrete mixtures with proportions of 50% Banjarmasin Gravel and 50% Merak Gravel, both using Tangkiling Sand and Sandblasting Sand do not meet the requirements for use as rigid pavement because they do not meet the minimum flexural strength of 45 kg/cm2 as required.
Penanggulangan Longsor Dengan Dinding Penahan Tanah Atau Retaining Wall (Ruas Muara Teweh-Benangin STA 50+800) Stephanus Alexsander; Fatma Sarie; Okta Meilawaty; Yuan Hunter
AGREGAT Vol 10 No 2 (2025)
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/ag.v10i2.28698

Abstract

Longsor merupakan peristiwa bergeraknya material penyusun lereng akibat terganggunya kestabilan lereng, yang dipengaruhi oleh faktor morfologi, sifat fisik dan mekanik tanah, serta kondisi hidrologi. Kasus longsor yang terjadi pada Ruas Jalan Muara Teweh–Benangin STA 50+800 menunjukkan pentingnya perencanaan infrastruktur yang memperhatikan karakteristik tanah agar tidak membahayakan pengguna. Penelitian ini bertujuan untuk menghitung nilai safety factor (SF) awal lereng, menganalisis pemodelan dinding penahan tanah (retaining wall), serta mengevaluasi perubahan nilai safety factor setelah diberi perkuatan. Penelitian dilakukan dengan pendekatan studi kasus menggunakan data sekunder hasil pengujian lapangan dan laboratorium yang dianalisis melalui metode elemen hingga (FEM) dengan bantuan program PLAXIS 2D. Hasil analisis menunjukkan bahwa nilai safety factor (SF) awal lereng sebesar 2,169, namun melalui back analysis diperoleh nilai SF sebesar 1,057 yang mengindikasikan kondisi tidak stabil dan berisiko tinggi longsor. Untuk itu direncanakan dinding penahan tanah tipe kantilever dengan spesifikasi tinggi 4 m, lebar 0,2 m, panjang heel 1,5 m, panjang toe 1 m, tebal dinding batang bawah 0,4 m. Analisis stabilitas lereng setelah diberi perkuatan menunjukkan peningkatan nilai safety factor (SF) menjadi 1,690, yang menandakan lereng telah berada dalam kondisi aman dari risiko kelongsoran
Co-Authors Adi Wiratno, Adi Amiany, Amiany Ananta, Jonny Ari Anggraini W Dari Dadang Suriyana Dwitiun Novyeremia Ein Javier Antonia Fadia Aqila H.A.B. Fatma Sarie Frans Putra Ganesa Fransisco H.R.H.B Fransisco Happy Riadi Haputra Baru Frieda Frieda Frieda, Frieda Friskila, Ayunisha Gawei, Apria Brita Pandohop Ginting, Messy May Tania BR Gus Two Four, Selasten Jecky, Tara Jepri Kurniawan Lendra Lendra Liliana Sahay Maryanto - Muchamad Ardiansyah Muchamad Ardiansyah Nico A Simanjuntak Novi Novi Puah, Putri Sri Rahmania, Najwamuna Norazizah Renna Jessica Sihombing Rudi Waluyo Sahay, Abertun Sagit Salonten, Salonten Samuel Layang Sopariah, Iis Stephanus Alexsander Subrata Aditama K.A.Uda Thathit Suprayogi Widati, Titiani Yohanesio Yuan Hunter Yunita Yunita