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All Journal JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang Jurnal Teknik Sipil Journal of Mathematical and Fundamental Sciences Journal of Engineering and Technological Sciences Tasyri` : Jurnal Tarbiyah-Syari`ah-Islamiyah Portal: Jurnal Teknik Sipil Chalim Journal of Teaching and Learning Realism: Law Review ILJ: Islamic Learning Journal
Herwani .
JurusanTeknik Sipil Universitas Tanjungpura, Pontianak
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Journal : Jurnal Teknik Sipil

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Analysis of the Structural Behavior of the 6-Story the Pastoral Center of the Archdiocese of Pontianak to Earthquake Loads Vian, Ryan Al; Herwani, Herwani; Elvira, Elvira
Jurnal Teknik Sipil Vol 24, No 4 (2024): Vol 24, No 4 (2024): JURNAL TEKNIK SIPIL EDISI NOVEMBER 2024
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v24i4.83863

Abstract

This study analyzes the structural behavior of the 6-story Pastoral Center of the Archdiocese of Pontianak under earthquake loads, emphasizing its stability, safety, and performance in soft soil conditions. The analysis includes evaluating load combinations, response spectrum curves, stability coefficients, and P-Delta effects. Results indicate that the building's structural stability meets seismic standards, with load combinations effectively calculated and deviations between design and actual conditions remaining within allowable tolerances. The response spectrum curve highlights peak accelerations during short periods, corresponding to the region's soft soil characteristics. The P-Delta effect does not significantly impact stability, confirming that the structure performs well under seismic loads. Future research is recommended to optimize earthquake-resistant designs for buildings with six or more stories, focusing on innovative materials, advanced foundation systems, and real-time monitoring technologies. This study concludes that the Pastoral Center structure provides adequate safety and stability while offering pathways for improving structural resilience in seismic-prone areas.
Investigation Study of Additional Water's Effect on Ash-Based Geopolymer Concrete Fitrahaldi, Naufal; Herwani, Herwani; Faisal, Faisal
Jurnal Teknik Sipil Vol 25, No 1 (2025): Vol 25, No 1 (2025): JURNAL TEKNIK SIPIL EDISI FEBRUARI 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i1.88404

Abstract

Geopolymer concrete is a form of concrete where the traditional Portland cement binder is substituted with alternative materials rich in silica and aluminum. Cement production involves a high-temperature combustion process, reaching 1.500 °C, which produces large amounts of carbon dioxide (COâ‚‚) emissions, roughly equivalent to the amount of cement produced. Due to the significant environmental impact of traditional cement production, there has been a growing emphasis on developing geopolymer concrete that uses fly ash as an alternative binder in concrete mixtures. This study adopts an experimental approach to fabricate geopolymer concrete specimens incorporating fly ash. The study involves testing to assess both the physical and mechanical properties. The findings indicated a slump range of 16-28 cm, an average density ranging from 2.274,501 Kg/m ³ to 2.322,177 Kg/m ³, a 28-day compressive strength between 11,247 MPa and 15,915 MPa, split tensile strength varying from 1,179 MPa to 1,721 MPa, and elasticity modulus between 2.003,573 MPa and 3.417,811 MPa. The optimal variation was achieved by adding 0% water. Thus, geopolymer concrete incorporating fly ash holds considerable promise as an environmentally sustainable substitute for traditional cement-based binders.
THE EFFECT OF USING EPOXY RESIN VARIATIONS ON THE VALUE OF COMPRESSIVE STRENGTH, SPLIT STRENGTH, AND ELASTIC MODULUS OF POLYMER MORTARS USING RIVER SAND Novita, Arisia; Elvira, Elvira; Priadi, Eka; Herwani, Herwani
Jurnal Teknik Sipil Vol 24, No 1 (2024): Vol 24, No 1 (2024): JURNAL TEKNIK SIPIL EDISI FEBRUARI 2024
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v24i1.67500

Abstract

The rapid development of physical and infrastructure projects in Indonesia necessitates efficient building materials. Mortar, a standard construction material comprising fine aggregate, water, and cement, has strength, environmental resistance, and flexibility limitations. This study investigates using epoxy resin as a substitute for cement in mortar production. Epoxy resin, a liquid material that hardens into a strong binder, offers potential benefits such as accelerated setting time and increased strength. The research uses river sand as the fine aggregate and varies the epoxy resin content from 5%, 10%, 15%, 20%, and 25% of the material volume. Tests will measure compressive strength, split tensile strength, and modulus of elasticity across different epoxy resin compositions. Results from Tanjung Pura University's Materials and Construction Laboratory in Pontianak indicate that adding epoxy resin significantly improves compressive strength (up to 35.92 MPa at 25% resin) and tensile strength (up to 3.82 MPa at 25% resin). However, adding epoxy resin leads to a decreased modulus of elasticity, indicating increased deformability. This research sheds light on epoxy resin's impact on mortar strength and informs potential applications in concrete repair and construction.
Effect of Activator Age on Fly Ash-Based Geopolymer Concrete Hutajulu, Jacob Hasiholan; Faisal, Faisal; Herwani, Herwani; Parabi, Ashraf Dhowian
Jurnal Teknik Sipil Vol 25, No 1 (2025): Vol 25, No 1 (2025): JURNAL TEKNIK SIPIL EDISI FEBRUARI 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i1.88409

Abstract

Geopolymer concrete is a sustainable alternative that replaces Portland Cement (PC) with fly ash. This research aims to analyze the mechanical properties of geopolymer concrete with variations in NaOH solution aging. An experimental method was applied through a series of tests, including slump, compressive strength, split tensile strength, and modulus of elasticity. The results indicate that the slump value ranges from 9,5 cm to 15,5 cm. The bulk density of geopolymer concrete varies between 2.313,052 Kg/m ³ and 2.387,324 Kg/m ³. The maximum compressive strength at 28 days was achieved after a 24-hour NaOH curing period, reaching 15,915 MPa, whereas the minimum strength of 10,186 MPa was observed with no curing time. The highest split tensile strength was observed at 24 hours (1,556 MPa), whereas the lowest occurred at 0 hours (1,085 MPa). Using the Chord Modulus method, the modulus of elasticity reached its highest value at 24 hours (3.625,261 MPa) and its lowest at 48 hours (2.152,499 MPa). Thus, this research concludes that a 24-hour NaOH curing period results in geopolymer concrete with optimal compressive strength and mechanical properties.
Co-Authors - Faisal, - ., Jeprianto Ali Akbar Andreas, Ricky Arfan ., Arfan Aryanto Aryanto Asep Supriyadi B. Budiono Bambang Budiono Bambang Budiono Bayu Emilsyah Bin Ilias, Mohd. Faeez Cek Putra Handalan, Cek Putra Chrisna Djaya Mungok Crisna Djaya Mungok DWI SANTOSO Ediansjah Zulkifli Eka Priadi Elsa Tri Mukti Elvira . Elvira Elvira Erwin Sutandar Faisal Faisal Faraid, Luthi Armey Fitrahaldi, Naufal Gagas Bagus Pradewa Hermanus, Hermanus Hutajulu, Jacob Hasiholan Insan Ari Maulana Iswadi Iswadi Iswandi Imran Ivindra Pane Kardianto, Arie Lusiana Lusiana Mahazir, Muhamad Manah . MUHAMMAD YUSUF Muhammad Yusuf Novita, Arisia Nurhayati Nurhayati Odie Sulung, Odie Parabi, Ashraf Dhowian pengelola, pengelola Rafie Rafie Ramadhany, Ajmal Randy Factsah Rubi Awalia, Rubi Salsabila, Putri Najwa Samsul Saputra, Husyin Sonny Franata Supatmi . Sutiono, Tansetiadi Syahmil, Muhammad Syavanka, Lucky Nur Ubabuddin, Ubabuddin Udi Wijayadi Vian, Ryan Al Yasin, Usman Z, Yosafat Zulshaec, Yongga