p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal Jurnal Teknik Sipil
Hamdany, Abdul Halim
Unknown Affiliation

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

Analisis Numerik Pengaruh Beban Hujan dan Gempa pada Stabilitas Lereng Tanah Tak Jenuh Koven, Wilson; Hamdany, Abdul Halim
Jurnal Teknik Sipil Vol 31 No 2 (2024): Jurnal Teknik Sipil - Edisi Agustus
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2024.31.2.8

Abstract

Abstract Rain and earthquake affect the stability of the slope. Rain results in infiltration on the slope which causes a decrease in negative pore water pressure on the slope and increases the groundwater level. Meanwhile, the seismic load from earthquake causes deformation on the slopes. Slope will experience even more critical condition if the effects of rain and earthquake are combined. This study aims to determine the influence of rain followed by earthquake on the stability of the unsaturated slope. This study consists of two stages of numerical analysis, which are seepage analysis to determine changes in pore water pressure on the slope and followed by non-linear time history dynamic analysis to calculate the deformation that occurs due to the ground motion. The soil-water characteristic curve from the field measurement will be incorporated in the upper layer of unsaturated soil and the Loma Prieta (1989) earthquake acceleration recording will be used. Six scenarios of rain followed by earthquake will be analyzed and compared, which are the scenario of rain intensity not changing for three days, the scenario of rain intensity gradually increasing and decreasing gradually, and the scenario of random rain intensity.
Pengukuran Langsung Kurva Karakteristik Air – Tanah (SWCC) Pada Limbah Beton Dengan Metode Tempe Cell Adinegara, Aldo Wirastana; Ramadhan, Rabbani Isya; Hamdany, Abdul Halim; Sagitaningrum, Fathiyah Hakim
Jurnal Teknik Sipil Vol 32 No 1 (2025): Jurnal Teknik Sipil - Edisi April
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2025.32.1.4

Abstract

Abstrak Terjadinya peningkatan volume limbah padat akibat pekerjaan konstruksi, sangat berdampak terhadap permasalahan ekologi serius. Dalam praktik rekayasa geoteknik, Capillary Barrier System dikenal sebagai suatu sistem konstruksi ramah lingkungan yang tersusun dari material limbah beton. Secara eksperimental, studi terhadap karakteristik material limbah beton pada kondisi takjenuh masih belum banyak dilakukan saat ini. Tujuan penelitian ini ialah untuk melakukan pengukuran secara langsung terhadap SWCC dan permeabilitas takjenuh pada material limbah beton dengan menggunakan alat Tempe Cell. Pengukuran SWCC berdasarkan alat Tempe Cell dilakukan secara bertahap, dengan mengaplikasikan tekanan udara sebesar 0.5, 1, 3, 5, 10, 20, dan 40 kPa. Adapun hasil data pengukuran, selanjutnya direpresentasikan dalam kurva best fit SWCC yang dianalisis dengan menggunakan fungsi regresi non-linier. Secara statistik, estimasi terhadap fungsi permeabilitas juga dilakukan berdasarkan hasil data pengujian permeabilitas jenuh dan representasi dalam kurva best fit SWCC. Berdasarkan hasil analisis, dapat diketahui bahwa karakteristik dari sifat hidraulik pada material limbah beton memiliki kemampuan penyimpanan air sebesar 31 %, serta pengaliran air dalam kondisi jenuh sebesar 1.12 x 10-5 m/s dan takjenuh sebesar 3.76 x 10-16 m/s. Kata Kunci : Fungsi permeabilitas, kurva karakteristik tanah-air, limbah beton, tempe cell. Abstract  The rise in solid waste from construction activities significantly impacts ecological issues. In geotechnical engineering practice, the Capillary Barrier System is an environmentally friendly construction system composed of concrete waste materials. Experimental studies on the characteristics of concrete waste materials under unsaturated conditions haven't been widely conducted at this time. The purpose of this study was to directly measure the SWCC and unsaturated permeability of concrete waste materials using the Tempe Cell. SWCC measurements based on the Tempe Cell were performed in stages, applying air pressures of 0.5, 1, 3, 5, 10, 20, and 40 kPa. The measurement data results were then presented in the SWCC best-fit curve, which was analyzed using a non-linear regression function. A statistical estimation of the permeability function was carried out using data from the saturated permeability tests and the SWCC best-fit curve. Based on the analysis results, it is evident that the characteristics of the hydraulic properties of concrete waste material have a water storage capacity of 31 % and water flow in saturated conditions of 1.12 x 10-5 m/s and unsaturated conditions of 3.76 x 10-16 m/s. Keywords: Concrete waste, permeability function, soil-water characteristic curve, tempe cell.