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Siegfried Syafier, Siegfried
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Humanities Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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KONSISTENSI LWD (LIGHT WEIGHT DEFLECTOMETER) PUSJATAN UNTUK JALAN KERIKIL Azzidul Piktor, Riqqi; Taufik Hudaya, Asep; Syafier, Siegfried
Cerdika: Jurnal Ilmiah Indonesia Vol. 3 No. 12 (2023): Cerdika : Jurnal Ilmiah Indonesia
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/cerdika.v3i12.720

Abstract

Infrastruktur jalan merupakan tulang punggung dalam sistem transportasi suatu negara. Perkerasan jalan sangat penting dalam mendukung infrastruktur transportasi yang efisien dan berkelanjutan. Salah satu jenis perkerasan jalan yang sering digunakan adalah perkerasan jalan berkerikil. Perkerasan jalan berkerikil sering digunakan di wilayah pedesaan atau daerah dengan lalu lintas ringan hingga sedang. LWD (Light Weight Deflectometer) merupakan salah satu alat yang digunakan untuk mengukur kekuatan struktural dari suatu sistem perkerasan jalan terutama untuk jalan-jalan yang tanpa penutup. LWD Pusjatan merupakan alat yang sudah dikembangkan oleh Puslitbang Jalan dan Jembatan. Penelitian ini dilakukan pada ruas jalan Rancabali – Sukaati, Kab. Bandung. Pengujian ini diambil pada 3 titik dengan masing-masing 15 kali pengambilan. Terdapat 3 sensor yang membaca defleksi yakni D0 pada pusat pembebanan, D1 pada geophone 1 dan D2 pada geophone 2. Hasil dari penelitian ini adalah defleksi pada D0 dan D1 memiliki nilai koefisien variasi yang relatif kecil (konsisten) sedangkan D2 memiliki nilai koefisien variasi yang besar sehingga tidak dapat digunakan untuk perencanaan. Dapat disimpulkan bahwa penelitian konsistensi LWD (Light Weight Deflectometer) Pusjatan untuk jalan kerikil hanya membutuhkan satu geophone dan tidak memerlukan geophone tambahan
Perbaikan Sifat Aspal Penetrasi 60-70 Menggunakan Bahan Tambah Polimer Polypropylene (PP) Nugraha, Gilang; Budiarti, Rina; Syafier, Siegfried
Jurnal Teknik Sipil dan Teknologi Konstruksi Vol 11, No 2 (2025): JURNAL TEKNIK SIPIL DAN TEKNOLOGI KONSTRUKSI
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jts-utu.v11i2.12614

Abstract

Asphalt modification using polymer-based additives is one approach to improving resistance against plastic deformation and high temperatures. This study evaluates the effect of adding pure polypropylene (PP) on the physical and thermal properties of penetration grade 60/70 asphalt. PP was added at 0%, 1%, 3%, and 5% by weight. A reflux method was used to soften the polypropylene prior to mixing. Tests included penetration, softening point, viscosity, ductility, flash point, solubility, specific gravity, and TFOT. Results show reduced penetration from 61.8 to 49.7, increased softening point from 49.5°C to 53.2°C, and increased viscosity from 424 cSt to 592 cSt. Ductility decreased significantly from >140 cm to 122 cm, indicating reduced flexibility. The 5% PP addition gave the best stiffness and thermal stability. Storage stability tests were not conducted due to equipment limitations, suggesting the need for further study.
Safety Analysis of Gedebage Station Equipment Building against Vibration with Microtremor and PPV Methods Febrinzaghi, Mohammad Gerald; Syafier, Siegfried; Sudarsono, Ignatius
JURNAL TEKNIK SIPIL Vol 14, No 2 (2025): Volume 14 Nomor 2 November 2025
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jts.v14i2.47840

Abstract

This study evaluates the impact of railway-induced vibrations on an equipment building near Gedebage Station, Bandung. Proximity to the railway track raised concerns about occupant comfort and structural integrity. The assessment employed microtremor analysis to determine natural frequencies of the soil (using HVSR method) and the building (using FSR method), alongside PPV analysis to measure vibration levels against regulatory standards. Results revealed that the train-induced vibration frequency (~37 Hz) did not coincide with the buildings natural frequency (~23 Hz), eliminating resonance risks. However, moderate natural resonance vulnerability was detected on the first floor in the east-west direction. While some PPV values exceeded Indonesias environmental thresholds (Kepmen LH) for minor plaster cracks (category B), all remained within DIN 4150-3 safety limits for commercial structures. In conclusion, the building faces no immediate structural threat, but train vibrations may cause minor non-structural disturbances, such as cosmetic cracks. Mitigation measures could enhance occupant comfort, though structural reinforcement appears unnecessary. The findings highlight the importance of vibration monitoring in infrastructure planning near railways.
Pengaruh Nano Silika Terhadap Nilai Karakteristik Aspal Pen 60/70 Wibowo, Angga; Hakim, Karica Maulidina; Syafier, Siegfried
TECHNO-SOCIO EKONOMIKA Vol 18 No 2 (2025): Jurnal Techno-Socio Ekonomika - Oktober
Publisher : LPPM Universitas Sangga Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32897/techno.2025.18.2.4457

Abstract

Roads are very important because they help the economy of a region grow. Many roads are still poorly designed and constructed, especially in Indonesia. One way to improve the quality of asphalt is to add additives. One material that could make asphalt more valuable and be used as an additive is nanomaterial. This test was done to learn about pen 60/70 asphalt with 2% and 4% nano silica additives. The test uses an experimental research method. It involves testing in the laboratory. The results of testing pen 60/70 asphalt with 2% and 4% nano silica additives showed an increase in values for penetration, softening point, flash point, viscosity, and specific gravity, and a decrease in values for ductility, solubility, and oil weight loss (TFOT).
Co-Authors Abdullah, Arif Chandra Andriyana, Dian Azzidul Piktor, Riqqi Bahy, Fransiskus Roystone Budiarti, Rina Dafa Syafrizal, Mochamad Fadhila, Raisa Febrinzaghi, Mohammad Gerald Gilang Nugraha Hakim, Karica Maulidina Hanifah, Witri Siti HM, Muhamad Rofi Irma Damayanti Jaelani, Fajar Syiar Kaok, Kasius Kaok Mulyawati, Fauzia Mulyawati, Firda Jelita Nurjaman, Reza Agung Permana, Nesta Robby Gunawan Yahya Saputra, Moch Azis Septiani, Teni Sudarsono, Ignatius Taufik Hudaya, Asep Utomo, Eko Wahyu Wibowo, Angga Wijaya, Aldi Latna Wildan, Wili