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All Journal TECHNO-SOCIO EKONOMIKA Sistem Infrastruktur Teknik Sipil (SIMTEKS) Jurnal Teknik Sipil
Chandra Afriade Siregar
Universitas Sangga Buana
Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Languange, Linguistic, Communication & Media Social Sciences Other

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PENGARUH GROUND GRANULATED BLAST FURNNACE (GGBF) SLAG SEBAGAI BAHAN TAMBAH SEBAGIAN SEMEN TERHADAP KUAT TEKAN BETON Rano Noviana Anwar; Abdul Chalid; Chandra Afriade Siregar
Sistem Infrastruktur Teknik Sipil (SIMTEKS) Vol. 3 No. 1 (2023): SIMTEKS - Maret
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Sangga Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32897/simteks.v3i1.2619

Abstract

Beton adalah bahan konstruksi yang paling banyak digunakan di dunia setelah air . Permintaan konsumsi yang tinggi ini hanya dapat dipenuhi dengan produksi semen yang tinggi. Semen merupakan bahan utama pembentuk beton, dan juga penyumbang pencemaran udara terbesar. Ground Granulated Blast Furnace Slag (GGBFS) atau Semen Slag yang merupakan hasil pengolahan limbah industri baja menjadi salah satu alternatif yang diminati karena proses produksi dan lebih ekonomis bila dibandingkan dengan Portland Cement (PC). Material yang mempunyai sifat cementitious ini berpotensi untuk menggantikan sebagian semen dalam campuran beton dengan tetap mempertahankan kelebihan sifat mekanis beton. Penelitian ini dilakukan di laboratorium dengan pengujian benda uji yang telah didesain dengan komposisi substitusi semen slag sebesar 0%, 50%, dan 70% dari berat semen yang dibutuhkan dan pada umur 3, 7, 14, 28 dan 60 hari pada suhu ruangan. Sebagai benda uji kontrol beton direncanakan dengan kuat tekan f’c = 40 MPa. Penelitian dilakukan untuk mengetahui kinerja semen slag pada beton melalui pengamatan kuat tekan (f’c). Pengujian menunjukkan bahwa substitusi slag menyebabkan terjadinya penurunan kuat tekan pada semua umur beton.
PENGARUH PERMEABILITAS TERHADAP STABILITAS KEAMANAN BENDUNGAN GUNUNGROWO Afrizon Kamiruddin; Abdul Chalid; Agus Sulaeman; Chandra Afriade Siregar
Jurnal Teknik Sipil Vol 18 No 2 (2022): Jurnal Teknik Sipil
Publisher : Universitas Kristen Maranatha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28932/jts.v18i2.4648

Abstract

Gunungrowo Dam has been establishing in 1925, it is located on the Wadi River. This dam is a homogeneous earthfill dam with a height of 20.5 m, with a storage capacity of 5.11 million m3 to supply irrigation water for an area of 6,000 Ha. Because the operational period is approaching 100 years, it is necessary to evaluate the level of stability and safety of the dam. The purpose of this study was to 1) determine the stability of the seepage safety in various reservoir water levels; 2) determine the slope safety stability (Safety Factor) of the dam in various reservoir water level conditions; 3) determine the effect of the dam body core permeability variable on seepage, and 4) determine the effect of the dam body core permeability variable on slope stability. The main discussion in this study is to analyze the stability of the dam safety using the GeoStudio-2012 computer program with SEEP/W features on seepage discharge and SLOPE/W on SF (Safety Factor) slopes. The SEEP/W modeling uses the concept of saturated soil mechanics. The input parameters for slope stability analysis are dam dimensions, type of material, bulk density (γ), cohesion (c), and shear angle (j). The study was conducted on all seepage discharge values and all SF values at minimum water level, normal water level, flood water level and fast receding with calculations without earthquake loads. The results of the study obtained that the SF value, discharge value, stable against landslide hazards and piping hazards met the safety requirements. Furthermore, from the seepage discharge value and the SF value, it is studied how the influence of the dam core permeability variable on the piping hazard and the potential for landslide hazard. From the results of the analysis, it is concluded that the greater the value of the permeability, the greater the seepage discharge and the greater the value of the permeability, the smaller the value of the safety factor.
Co-Authors Abdul Chalid Afrizon Kamiruddin Agus Rachmat Agus Subekti Agus Sulaeman Angga Brata Azeglio Fenichi Correia Pinto Bonny Wijaya Doni Romdoni Witarsa Fahmi Rizki Kurniawan Farid Darulhanif Abdarraafi Favian Aqib Arsada Feri Amiruddin Hanif Ahmad Ma'sum Hendra Garnida Imas Pupu Marpuah Muhammad Syukri Nuke Julfah Nur Asiah Jamil Nur Nilasari Raka Priyadinata Rangga Jumena Rano Noviana Anwar Reza Lingga Rully Savitri Nurvita Serta Denius Daeli Tri Ananda Bangkit Kusuma Wardana Yudi Khardiman