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All Journal Civil Engineering Forum Teknik Sipil Inersia : Jurnal Teknik Sipil dan Arsitektur MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Teknik Sipil Jurnal Teknik Sipil dan Perencanaan Jurnal Tata Kota dan Daerah Journal of Engineering and Technological Sciences Jurnal HPJI (Himpunan Pengembangan Jalan Indonesia) Semesta Teknika Teknisia Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil JURNAL SIPIL SAINS Civil Engineering Journal Rang Teknik Journal Jurnal Pengembangan Rekayasa dan Teknologi Journal of the Civil Engineering Forum Jurnal Ilmiah Multidisiplin Indonesia ASEAN Natural Disaster Mitigation and Education Journal Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir

Iman Satyarno

Universitas Gadjah Mada

Author-ID : 374648

Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation Other

Published : 41 Documents Claim Missing Document

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PENGARUH SERAT BAJA (DRAMIX) TERHADAP KUAT LENTUR PADA ROLLER COMPACTED CONCRETE (RCC) Adita Dwi Sampurno; Iman Satyarno; Agus Taufik Mulyono
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 15, No 1 (2019): Mei
Publisher : Universitas Negeri Yogyakarta

ABSTRACTRigid pavement for highways in Indonesia started as an alternative for road pavement. Roller compacted concrete (RCC) is one type of dry concrete mixture with low water cement ratio (slump 5 cm). The RCC spreading is the same as the asphalt concrete pavement that uses the finisher and is compacted using a roller. This research uses RCC mix design with cement water factor value 0,25. Additional silicafume materials of 10%, superplasticizer 2.4%, and steel fiber (dramix) with variations of 0.5% and 1%. RCC Compaction using standard proctor tools. Testing of bending forces and compression of concrete in 1 day and 28 days. The result of research of RCC variation of 0.5% steel fiber and 1 day old concrete obtained Flexural Strength of 4,2 MPa while 28 days concrete gained Flexural Strength of 5,7 MPa. The variation of 1% steel fiber 1 day concrete obtained 3.4 MPa Flexural Strength, while the 28 days concrete obtained 6.1 MPa Flexural Strength.Keywords: Roller Compacted Concrete (RCC), Steel Fiber (dramix), Flexural Strength ABSTRAKPerkerasan kaku di Indonesia semakin banyak digunakan sebagai alternatif perkerasan jalan raya. Roller Compacted Concrete (RCC) atau beton padat giling (BPG) merupakan salah satu jenis campuran beton kering dengan faktor air semen (FAS) yang rendah (slump 5 cm). Penghamparan RCC sama seperti penghamparan perkerasan beton aspal yang menggunakan finisher dan dipadatkan menggunakan roller. Kajian ini menggunakan mix design RCC dengan nilai faktor air semen 0,25. Bahan tambah silicafume sebesar 10%, superplasticizer 2,4%, dan serat baja (dramix) dengan variasi 0,5% dan 1%. Pemadatan RCC menggunakan alat standar proctor. Pengujian kuat lentur pada beton umur 1 hari dan 28 hari. Hasil kajian RCC variasi serat baja 0,5% beton umur 1 hari diperoleh kuat lentur 4,2 MPa, sedangkan beton umur 28 hari diperoleh kuat lentur 5,7 MPa. Variasi serat baja 1% beton umur 1 hari diperoleh kuat lentur 3,4 MPa, sedangkan beton umur 28 hari diperoleh kuat lentur 6,1 MPa. Kata kunci: Roller Compacted Concrete (RCC), Beton Padat Giling (BPG), Serat baja (dramix), Kuat lentur

Mix Design of Ambient Cured Geopolymer Concrete with Fly Ash, GGBFS, and Borax Hanani, Eklisia; Satyarno, Iman; Sulistyo, Djoko
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 2 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i2.74464

Geopolymer cement, using fly ash (FA), presents a viable alternative to Portland cement. However, FA-based geopolymers often lack reactivity and strength, necessitating combination with calcium-rich materials like ground granulated blast furnace slag (GGBFS). However, GGBFS could accelerate setting and decrease workability, requiring a retarder. Borax is recognized for its retarding properties in FA-based geopolymers, but its impact in FA-GGBFS systems remains understudied. This study evaluated the influence of varying proportions of FA and GGBFS with the addition of borax, on the setting time, workability, and mechanical strength of the geopolymer paste, mortar, and concrete under ambient curing conditions. Setting time test was conducted for the geopolymer paste, flow table test for workability assessment of mortar, and compressive strength testing at 1, 7, and 28 days for the mechanical strength of paste and concrete. Various FA:GGBFS ratios (100:0, 70:30, 50:50, and 0:100) were examined. Alkali activator consists of NaOH and Na2SO3 with Na2SO3/NaOH ratio (R) of 1.5 and alkali to precursors ratio (A) of 0.45 was used. Borax was added at a constant 3% by weight of the precursors. Both the volume ratios of paste to fine aggregate voids (Rm) and mortar to coarse aggregate voids (Rb) were set to 1.5. Borax increased initial setting time by 7-33 minutes for FA-GGBFS geopolymer. GGBFS replacement decreased the workability of mortar, with flow index ranging from 83-158%. Increasing GGBFS content significantly improved compressive strength in both paste and concrete samples. Notably, 100% GGBFS replacement yielded the highest concrete strength at 74.86 MPa after 28 days. However, the optimal balance of properties was achieved with a 50% GGBFS replacement, resulting in satisfactory strengths of 100.29 MPa for paste and 69.08 MPa for concrete, along with a 40-minute initial setting time and a flow index of 138%. These findings surpass prior studies on similar geopolymers.

Mix Design of Geopolymer No-fines Concrete with Fly Ash and Ground Granulated Blast Furnace Slag Yuhasnita, Angeline; Siswosukarto, Suprapto; Satyarno, Iman
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 2 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i2.74239

The use of geopolymers as a cement replacement in no-fines concrete can be a solution to address the impact of cement production on global warming. The absence of standardized mix designs for geopolymer paste poses a challenge, particularly concerning workability in no-fines geopolymer concrete mixes, where insufficient workability can hinder compacting, while excessive workability may cause segregation. Additionally, geopolymer often exhibits a quick hardening time, necessitating the use of retarders such as borax. This study aims to evaluate the impact of varying the ratio of alkali activator to cementitious material (A) at 0.25, 0.30, and 0.35, with the addition of borax (C) at 3% and 5%, on the flow and hardening time of geopolymer paste. Additionally, the study aims to investigate the effect of the cement-to-aggregate volume ratio (P) on geopolymer no-fines concrete properties, particularly compressive strength and unit weight. In no-fines geopolymer concrete formulation, the absolute volume of geopolymer paste is equivalent to the volume of cement paste with a 0.4 water-to-cement (w/c) ratio, with a cement-to-aggregate volume ratio of 1:4 and 1:6. The geopolymer mixture consists of fly ash and GGBFS in a 50:50 ratio. The geopolymer activator consist of NaOH (10 M) and Na2SiO3 in a SS/SH (R) ratio of 2. The research results indicate that reducing the A ratio from 0.35 to 0.25 decreases flow and accelerates the hardening time of the geopolymer paste. Increasing the borax (C) content from 3% to 5% can prolong the hardening time and reduce flow (from 20.25 to 19.25 cm at an A ratio of 0.30). The test results of geopolymer no-fines concrete properties that increasing the volume ratio (P) from 1:4 to 1:6 can reduce the compressive strength from 30.95 to 13.27 MPa and the unit weight from 2158.83 to 1843.38 kg/m³ at (A) 0.35. However, in the concrete samples at this ratio, some voids were covered by paste. Therefore, it is recommended to use ratio (A) 0.30.

PANEL DINDING GEOPOLIMER DENGAN PERKUATAN WIREMESH Putri, Andini Pratiwi; Satyarno, Iman; Saputra, Ashar
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol 16, No 1 (2020): Mei
Publisher : Universitas Negeri Yogyakarta

ABSTRAK Pengembangan fly ash berbasis geopolimer sangat cocok untuk memperluas aplikasi pracetak khususnya panel dinding pada lingkungan asam sulfat. Panel berbahan abu terbang ini dapat dijadikan pertimbangan karena memiliki keunggulan diantaranya kekerasan tinggi, ramah lingkungan, tidak menghasilkan gas karbon (CO2), tahan pada temperatur panas antara 600-800° C, tahan lingkungan asam, dan tidak memerlukan perawatan panas. Untuk pembuatan struktur panel pracetak menggunakan bahan pengisi berupa mortar berbahan geopolimer dengan komposisi NaOH 14 M, rasio NaOH/Na2SiO3 sebesar 1 :2, rasio alkaline : fly ash sebesar 35%, dan menggunakan variasi wiremesh sebagai perkuatan, dengan ukuran benda uji panel 800x400x40 mm. Hasil yang didapat kuat tekan umur 1 hari sebesar 11.27 MPa umur 28 hari 60,84 MPa, dengan nilai modulus 28 hari sebesar 13808 MPa. Pengujian kuat tarik 1 hari sebesar 1.02 MPa dan 28 hari sebesar 2,95 MPa Pengujian kuat lentur didapatkan 3,52 MPa tanpa perkuatan dan 4,52 dengan perkuatan. Kata kunci: Geopolymer, panel, wiremesh ABSTRACT Geopolymer-based fly ash development is perfect for expanding precast applications especially wall panels in sulfuric acid environments. Panels made of fly ash can be considered because it has the advantage of high hardness, environmentally friendly, does not produce carbon gas (CO2), resistant to heat temperature between 600-800 ° C, resistant to acidic environment, and not require hot maintenance.To create the structure of precast panels using mortar filling material with geopolymer with composition NaOH 14 M, ratio of NaOH/Na2SiO3 is 1:2, ratio alkaline ratio: fly ash 35%, and use wiremesh variation, size of panel 800x400x40 mm. Results obtained compressive strength of 1 day 11.27 MPa, age 28 Days 60.84 MPa, modulus elasticity 28-day 13808 MPa. Result tensile strength 1-day 1.02 MPa and 28 days 2.95 MPa, frexural strength panel 3.52 MPa without wiremesh and 4.52 with wiremesh. Keywords: Geopolymer, panels, wiremesh

Preparedness of Tsunami Disaster in Pandeglang Region Due to The Activity of Mount Krakatau Ningtyas, Nadya Nur; Satyarno, Iman; Triatmadja, Radianta
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 18 No. 2 (2022): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v18i2.54054

Pandeglang Regency is one of the areas with the most building damage in The 2018 Anak Krakatau Tsunami. The tsunami in 2018 was caused by the activity of Anak Krakatau Volcano in the form of an avalanche of material on the volcano's cliffs. The subdistricts in Pandeglang Regency affected by the tsunami were Carita Subdistrict, Labuan Subdistrict, and Panimbang Subdistrict. This research evaluates potential damage to buildings to determine the condition of the existing land, determines an evacuation route to a temporary evacuation site (TES), and simulates a tsunami evacuation using this evacuation route. Parameters of run-up height and building type are used as parameters for assessing building damage. The determination of TES is influenced by run-up height, elevation, and distance from the shoreline. Evacuation route planning and evacuation simulation are based on the assumed number of evacuees and the scenario of a tsunami evacuation. The results showed moderate damage to buildings in Carita Subdistrict, Labuan Subdistrict, and Panimbang Subdistrict. The examination of existing land as TES, namely Carita Vacant Land, Carita 1 Middle School, LDII Labuan Mosque, Labuan Shelter Building, Panimbang Vacant Land. According to the tsunami evacuation scenario during the day, evacuation time results for 25-30 minutes with an average speed of > 1 m/s. The tsunami evacuation time at night is free of obstacles or with obstacles for 50-85 minutes with an average speed of 1 m/s. The tsunami evacuation time at night is full of free and obstacle-free tours for 60-100 minutes with an average speed of 0.5 m/s. Evacuation time based on simulation results is compared with evacuation time calculated by ETA and other studies as data validation to determine the probability of community preparedness in the Pandeglang Regency. The preparedness community in Pandeglang Regency is in the ready category by 25% in the Carita subdistrict, Labuan subdistrict, and Panimbang Subdistrict.

Long-Term Health Monitoring Data Processing on Post-Tensioned Concrete Box-Girder Bridge by Wavelet-Based Zulkifli, Rifdah Rofifah; Aminullah, Akhmad; Satyarno, Iman
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 19 No. 1 (2023): May
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v19i1.54918

The concrete box-girder bridge is designed to have a long service life of around 100 years. To ensure safety and performance degradation during long service life, a Structural Health Monitoring System (SHMS) has been implemented in the box-girder bridge. SHMS can reliably assess structural response due to real-time applied loads, detect anomaly activities and locate the structural damage in the structure. Several sensors have been implemented in the bridge to continuously record the behavior of the bridge in all environmental conditions. Due to real-time natural conditions, false alarms occur frequently in SHM due to the disruption of noises and lead to misunderstanding of who is evaluating. Nevertheless, numerous SHM data that have been collected make it complicated to determine the anomaly of the structures. Therefore, it required signal processing to maximize the potentialities of the massive SHM data, as well as the efficiency of the time work. In this study, wavelet transformation, a rapid and unsupervised signal processing approach, was used to analyze the huge signal data by removing noise, and separating different signal sources as well. Further, with time-frequency analysis and multi-resolution capabilities, the transformation of wavelet is a promising tool for analyzing long-term SHM data. The suggested approach is shown by using long-term strain data from a 40 m concrete box-girder bridge in 24h. The results showed that after the denoising process, the highest discrepancy between the reconstructed and original strain signal is 2.73 Î¼Æ and lost their energy less than 1%. Hence, the strain gauge sensor was successfully able to eliminate the noise through wavelet technology.

Co-Authors Adita Dwi Sampurno Agung Harijoko Agus Budhie Wijatna Agus Taufik Mulyono Ahmad Rifa'i Ahmad Wancik Ali Awaludin Aminullah, Akhmad Ananto Nugroho, Ananto Andreas Triwiyono Anisa Ardha, Yusufa Kholifa Arfiati FArdhani, Arfiati Ari Dwi Hariyanto Arief Gunarto Ashar Saputra Ashar Saputra Danang Purwanto Darmawan, M. Fauzi Dedy Sumaryanto Dian Rifany K. Diarto Trisnoyuwono Djoko Sulistyo Fathurrachman, Muhammad Puja Gatot Subagio Gayatri Indah Marliyani Gerson Pongajow Hanani, Eklisia Haroki, Yusuf Haryadi Widodo Hendra Putra Howardy Howardy Hsuan-Teh Hu INTAN SUPRABA Juandra Hartono Juandra Hartono, Juandra Kardiyono T. Kardiyono T. Kardiyono Tjokrodimuljo Kardiyono Tjokrodimulyo Kukuh Adhi Kafie Latif Budi Suparma Lilis Tiyani Md Nor, Noorsuhada Muslikh Muslikh Ningtyas, Nadya Nur Pratama, Hamdi Y. Priyosulistyo Priyosulistyo Purnomo, Sidiq Putra, Whelly T. Putri, Andini Pratiwi R. Abadirulian Ervantara Radianta Triadmadja Rimindubby, Vriska D.S Satmoko, Tranggono Aji Setiaji, Abimanyu Bondan Wicaksono Setiawan, Angga F. Setiawan, Angga Fajar Subyakto Subyakto Sumartono, Ignatius Harry Suprapto Siswosukarto Suratmin Syarif, Syafitri Talitha Zhafira Utomo, Adityo Budi Vernandest, Effri Widiana, Niza Widiasmoro Widiasmoro Yanuar Haryanto Yudhi Ardiansyah Yudhi Arnandha Yuhasnita, Angeline Zulkifli, Rifdah Rofifah

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