Article Per Year (5 Year)
p-Index From 2021 - 2026
0.659
P-Index
This Author published in this journals
All Journal IPTEK The Journal of Engineering Indonesian Journal of Multidisciplinary on Social and Technology
M. Sigit Darmawan
Institut Teknologi Sepuluh Nopember
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Mechanical Engineering Social Sciences

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
Environmental Effects of Sulphate on Conventional Concrete Based on Portland Composite Cement Yuyun Tajunnisa; Nur Ahmad Husin; M. Sigit Darmawan; M. Faishal Darmawan; Suwandi; Mitsuhiro Shigeishi
IPTEK The Journal of Engineering Vol. 9 No. 1 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v9i1.a16230

Abstract

Concrete performances have weaknesses; one of those weaknesses is that it is significantly affected when put in a high sulfate and chloride environment. This study aims to investigate sulfate's effect on PCC concrete's performance. In this research, PCC concrete was immersed in water for 28 days and conducted after the casting. After being soaked in water, three immersed specimens were removed and immersed in magnesium sulfate solution for 24 days and 84 days, whereas three others were removed and immersed in natrium sulfate solution for 24 days and 84 days. The observation showed that PCC concrete's average compressive strength test with water immersion was 42.17 Mpa. It meets the SNI 2847:2019 Indonesian standard for sulfate classification S1. The specimens decreased to 30.74 Mpa after being soaked in the magnesium sulfate solution for 28 days and again reduced to 25.39 Mpa at 84 days. The average compressive strength of specimens bathed in the sodium sulfate solution for 28 days was 32.19 Mpa. It decreased to 28.03 Mpa at the age of 84 days. The results of this study show that the compressive strength of PCC concrete soaked in sodium sulfate meets the SNI 2847:2019 standard for sulfate classification S1, which is more than 28 Mpa. The compressive strength of PCC concrete immersed in magnesium sulfate for 1 month (28 days) is more than 28 MPa. It meets the standard as well. Yet, the compressive strength of PCC concrete soaked in magnesium sulfate for 3 months (84 days) does not meet the standard.
Numerical Analisys of Segmental Box Girder’s Stress with Eccentric Tendon Anchoring on Balanced Cantilever Box Girder Bridge Kevin Raenaldo; M. Sigit Darmawan; Nur Ahmad Husin
IPTEK The Journal of Engineering Vol. 11 No. 1 (2025)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v11i1.a22591

Abstract

Diagonal crack damage on the web of balanced cantilever box girder bridges has frequently occurred worldwide, including in Indonesia. Previous studies have shown that these cracks can result from additional shear stress caused by prestressed tendon anchoring. In this study, an analysis was conducted using a 2D element model verified through a numerical approach. The evaluation of box girder web stress values was used to assess the potential for cracking and confirm the results of crack mapping conducted on site. The research found that shear stress from prestressed tendon anchoring increases the total shear stress on the box girder web by up to 46.6% of the total shear stress value. The distribution of shear stress from prestressed tendon anchoring is concentrated in the anchoring areas on the top slab and bottom slab sides of the box girder web. The evaluation of principal tensile stress shows that the observed crack locations in the field correspond to areas where the principal tensile stress values exceed the allowable design limit.
Analisis perilaku sambungan replaceable dengan mekanisme kuncian dan sambungan konvensional pada Sistem Rangka Baja Pemikul Momen Khusus Luqman Baskara; M. Sigit Darmawan; Afif Navir Revani
Indonesian Journal of Multidisciplinary on Social and Technology Vol. 4 No. 3 (2026): Juli - Oktober
Publisher : PT Ilmu Data Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69693/ijmst.v4i3.13033

Abstract

Sistem Rangka Baja Pemikul Momen Khusus (SRPMK) dirancang untuk memberikan daktilitas dan kapasitas disipasi energi yang tinggi saat gempa. Namun, sambungan konvensional dengan pengelasan permanen memiliki keterbatasan dalam aspek repairability karena kerusakan plastis umumnya berkembang pada balok utama, sehingga rehabilitasi pascagempa menjadi lebih sulit serta meningkatkan waktu dan biaya perbaikan. Penelitian ini mengembangkan sambungan replaceable dengan locking mechanism yang dirancang untuk melokalisasi kerusakan pada elemen sekering (structural fuse) tanpa mengurangi kinerja seismik struktur. Evaluasi dilakukan secara numerik menggunakan metode elemen hingga. Pemodelan global pada ETABS digunakan untuk memperoleh gaya dalam, kemudian dilanjutkan dengan pemodelan detail sambungan pada Abaqus berdasarkan AISC 341-22, AISC 358-22, ASTM A992, dan ASTM A572 Gr.50. Kinerja sambungan dievaluasi melalui pembebanan monotonik dan siklik berdasarkan kapasitas beban, kekakuan, respons histeresis, disipasi energi, dan regangan plastis ekuivalen (PEEQ). Sambungan replaceable mencapai kapasitas maksimum 1.015,7 kN, meningkat 92,94% dibandingkan sambungan konvensional sebesar 526,4 kN, dengan kekakuan sekan 44,0 kN/mm dibandingkan 17,2 kN/mm. Sebaliknya, sambungan konvensional menghasilkan disipasi energi total lebih besar, yaitu 276.156,94 kN.mm dibandingkan 178.612,43 kN.mm, karena plastisasi terjadi pada balok utama. Pada sambungan replaceable, kerusakan terkonsentrasi pada structural fuse, yang dikonfirmasi oleh nilai PEEQ sebesar 1,156, sekitar 2,49 kali nilai pada balok konvensional sebesar 0,464. Kedua sambungan mencapai rotasi inelastik mendekati target 0,04 rad, yaitu 0,0399 rad. Hasil ini menunjukkan bahwa sambungan replaceable efektif menerapkan controlled damage mechanism dan berpotensi meningkatkan efisiensi perbaikan struktur pascagempa.
Co-Authors Afif Navir Revani Kevin Raenaldo Luqman Baskara M. Faishal Darmawan Mitsuhiro Shigeishi Nur Ahmad Husin Suwandi Yuyun Tajunnisa