Article Per Year (5 Year)
p-Index From 2021 - 2026
0.61
P-Index
This Author published in this journals
All Journal Jurnal Teknik Sipil Kokoh Jurnal Abmas
Istiqomah Istiqomah
Universitas Pendidikan Indonesia
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Engineering Transportation

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
KARAKTERISTIK BETON GEOPOLIMER PADA AKTIVATOR NATRIUM HIDROKSIDA (NAOH) DAN NATRIUM SILIKAT (NA2SIO3) Ben Novarro Batubara; Istiqomah Istiqomah; Budi Kudwadi; Diza Alfan
Kokoh Vol 20, No 2 (2022): Juli 2022
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Geopolymer concrete is concrete composed of cystesis material of non-organic materials that go through a polymerization process so that it is environmentally friendly, so it can reduce the amount of carbon dioxide produced in Portland cement in the normal concrete manufacturing process which can cause a greenhouse effect. Geopolymer concrete requires a lot of silica and alumina. In geopolymer concrete, the most common alkaline activators used in geopolymer concrete are Sodium Hydroxide (NaOH) and Sodium Silicate (Na2SiO3). Fly Ash has a lot of silica and alumina and the role of alkali activator to dissolve the elements of silica and alumina. The method carried out is an experiment. This study used a ratio between fly ash and activator of 70%:30%, and used a ratio of activators between Na2SiO3 and NaOH of 5:2, 6:2, 7:2, 8:2, 9:2, with a cylinder test object of 20x10 cm with a test result of 42.71 MPa.Keywords: Activator, Compressive Strength, Geopolymer Concrete,
ANALISIS KINERJA STRUKTUR GEDUNG ASIMETRIS AKIBAT BEBAN GEMPA (Studi Kasus :Gedung Kantor Pelayanan Pemerintah (POLRES) Kota Bekasi) Fajar Abdilah; Istiqomah Istiqomah; Ben Novarro Batubara; Budi Kudwadi; Odih Supratman
Kokoh Vol 20, No 1 (2022): Januari 2022
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The infrastucture of high-rise buildings must have an earthquake resistance. As a mitigation effort, a building must be symmetrical. When an earthquake occurs the response of the structure easily predictable. However, along with the development of architectural design, many buildings with irregular shapes (asymmetrical). So, it is necessary to analyze the behavior of structures in irregular buildings. The purpose of this study was to determined the maximum displacement value and a structural performance due to an earthquake loads based on ATC-40. The earthquake analysis used a Response Spectrum and Time History with the help of ETABS V17.0.1 software, case study located in Bekasi City Government Service Office (POLRES) building. The research used quantitative descriptive method. Based on the analysis, the maximum displacement value due to earthquake loads using the Response Spectrum analysis method for the X direction were 74,655 mm and 54,566 mm for the Y direction.Keywords: Asymmetrical, Displacement structure, Earthquake loads, Earthquake Resistance, Structure performance,
EVALUASI KINERJA STRUKTUR BANGUNAN GEDUNG TAHAN GEMPA DENGAN METODE ANALISIS RESPONS SPEKTRUM DAN TIME HISTORY Muhammad Irsan Arrasyid; Istiqomah Istiqomah; Ben Novarro Batubara; Budi Kudwadi
Kokoh Vol 21, No 2 (2023): Juli 2023
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The city of Bandung is one of the cities that is prone to earthquakes because it is passed by the Lembang fault. Therefore, buildings in the city of Bandung should have implemented the concept of earthquake-resistant buildings in their construction. To avoid the occurrence of damage or collapse of the structure of the building against an earthquake, it is necessary to analyze the building against the earthquake. This study aims to determine how many deviations occur in the building due to the earthquake and the performance of the building structure. The method used is the response spectrum and time history analysis method and then evaluates the performance of the structure against earthquakes using the ATC-40 standard. The building that is the case study is the Directorate of Drugs and the Directorate of Intelligence and Security for the West Java Police, which consists of 5 floors. Structural modeling and analysis were performed using ETABS v20. Earthquake records used are Imperial Valley, Kobe and Trinidad earthquakes. Based on the results of the analysis of the maximum deviation with the response spectrum method 26.74 mm in the X direction and 26.46 mm in the Y direction. Meanwhile, for the time history analysis, it was obtained 33.05 mm in the X direction and 28.96 in the Y direction. The maximum value of the total deviation obtained 0.0016 m and the maximum value of inelastic deviation obtained 0.0014 m so that it shows the level of performance of this building structure based on ATC-40 is Immediate Occupancy (IO), which means the structure is in a safe condition.Keywords : ATC-40, earthquake resistant buildings, spectrum response, time history,
Program pelatihan pembuatan dan pengelolaan pompa hydram bagi masyarakat di Kecamatan Parongpong Kabupaten Bandung Barat Nandan Supriatna; Istiqomah Istiqomah; Dedi Purwanto
Jurnal Abmas Vol. 15 No. 1 (2015): Jurnal Abmas
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/abmas.v15i1.38810

Abstract

Pompa hidram adalah pompa air dijalankan dengan tenaga air itu sendiri. Pompa tersebut bekerja dengan menggunakan energi air yang jatuh ketinggian kecil untuk mengangkat sebagian kecil dari jumlah air ke ketinggian yang lebih besar. Dengan cara ini, air dari mata air atau sungai di lembah dapat dipompa ke daerah di lereng bukit. Keuntungan utama dan keunikan pompa hidram adalah bahwa dengan aliran air yang kontinu, pompa hidram beroperasi secara otomatis dan terus menerus tanpa sumber energi eksternal lainnya — baik itu listrik atau bahan bakar hidrokarbon, sehingga biaya operasionalnya rendah. Pompa hidram ini sangat sesuai untuk digunakan di daerah di mana terdapat sumber air yang mempunyai head rendah, serta diperlukan memompa air ke lokasi pemukiman yang mempunyai elevasi lebih tinggi dari sumber air tersebut. Pada kondisi seperti inilah pompa hidram menjadi sangat bermanfaat sekali, karena pompa ini tidak membutuhkan sumber daya lain selain energi kinetik dari air yang mengalir itu sendiri. Kegiatan pelatihan pembuatan dan pemeliharaan pompa hidram bertujuan untuk meningkatkan pengetahuan masyarakat dalam hal pembuatan dan pemeliharaannya, sebagai alternatif penghematan tenaga listrik dan pemenuhan kebutuhan air bersih. Metode kegiatan yang digunakan dalam pelatihan ini adalah ceramah dan demonstrasi serta praktek dan pembimbingan. Metode ceramah dan demonstrasi digunakan untuk memberikan informasi dan pengetahuan peserta berbagai hal yang berkaitan dengan teknologi hidram. Adapun praktek dan pembimbingan digunakan untuk memberikan kesempatan berlatih membuat hidram.
Co-Authors Ben Novarro Batubara Budi Kudwadi Dedi Purwanto Diza Alfan Fajar Abdilah Muhammad Irsan Arrasyid Odih Supratman Supriatna, Nandan