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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
Religion Astronomy Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Physics Other

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Experimental Study of The Effect of Activator Molarity on The Compressive Strength of Fly Ash-Based Geopolymer Concrete from Bengkayang Regency Power Plant Faraid, Luthi Armey; Herwani, Herwani; Faisal, Faisal; Parabi, Ashraf Dhowian
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.v24i4.88329

Abstract

Geopolymer concrete is a form of concrete where Portland cement is substituted with alternative materials like fly ash, rice husk ash, and other silica- and aluminum-rich sources as binders. The research employed an experimental method by preparing geopolymer concrete test specimens using fly ash, NaOH solution, Naâ‚‚SiO₃, fine aggregate, and coarse aggregate. Tests conducted included physical properties (slump test and unit weight) and mechanical properties (compressive strength, split tensile strength, and modulus of elasticity). The results showed a slump range of 130"“190 mm, an average unit weight between 2249.39 kg/m ³ and 2336.39 kg/m ³, a 28-day average compressive strength between 12.32 MPa and 15.92 MPa, an average split tensile strength between 1.46 MPa and 1.56 MPa, and an average modulus of elasticity (Chord Modulus) between 3011.67 MPa and 3881.8 MPa. The optimal variation was achieved with an NaOH solution concentration of 10 M, resulting in a slump of 160 mm, a 28-day average compressive strength of 15.92 MPa, an average split tensile strength of 1.56 MPa, and an average modulus of elasticity (Chord Modulus) of 3881.48 MPa. Therefore, fly ash-based geopolymer concrete demonstrates potential as a viable substitute for cement as a binder material.
CALCULATION OF EARTHQUAKE RESISTANT STRUCTURE OF MEDICAL CENTER BUILDING RUMAH SAKIT UMUM DAERAH (RSUD) SOEDARSO PONTIANAK USING PUSHOVER ANALYSIS Sutiono, Tansetiadi; Budi, Gatot Setya; Herwani, Herwani
Jurnal Teknik Sipil Vol 23, No 3 (2023): JURNAL TEKNIK SIPIL EDISI AGUSTUS 2023
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v23i3.67754

Abstract

Hospitals are essential in providing health services and must withstand the forces that may occur, even due to an earthquake. RSUD Soedarso is a hospital in Pontianak City that has been around for a long time. However, because it is already quite old, various problems must be addressed. The step taken by the government is to build a new building, namely the Medical Centre and Inpatient Building.The purpose of writing this final project is to evaluate the performance of the earthquake-resistant structure of the Soedarso Hospital Medical Centre building using the pushover analysis method. This method analyses the inelastic behaviour of the system due to the earthquake, where the result is a curve of the relationship between the shear force and the displacement of the roof that occurs. The guidelines for pushover rules used are based on the provisions of ATC-40 and FEMA 356. Further research was carried out on the dilation between the Medical Centre Building and the IRNA Building.The results are that both buildings are still in elastic condition when the performance point is reached. Based on ATC-40 and FEMA 356, the building is classified as in the Immediate Occupancy (IO) performance level, regarding drift ratio and from plastic hinges that occur in column and beam elements. Then the dilatation that arises due to pushover is smaller than the design dilation of 150 mm. Both buildings are protected from potential collisions, which is a relief.
Effect of Curing Temperature on Mechanical Properties of Fly Ash-Based Geopolymer Concrete from Bengkayang Power Plant Syavanka, Lucky Nur; 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.v25i1.88504

Abstract

The production of portland cement generates carbon dioxide emissions, which contribute to environmental degradation. To address this issue, researchers have explored the use of coal waste, such as fly ash, as a partial replacement for cement. This research investigates the potential of fly ash as a substitute in the production of geopolymer concrete. The research follows an experimental approach involving the fabrication of test specimens to evaluate the concrete's mechanical properties. The process encompasses material analysis, specimen preparation, curing, and testing for volume weight, compressive strength, split tensile strength, and elasticity modulus. The findings reveal that the volume weight values range between 2.260,000 kg/m ³ and 2.336,395 kg/m ³, while compressive strength varies from 10,152 MPa to 16,994 MPa. Additionally, the split tensile strength falls within 1,415 MPa to 1,556 MPa, and the elasticity modulus spans from 2.727,352 MPa to 3.325,204 MPa. The results emphasize the significant influence of temperature variations on the mechanical performance of geopolymer concrete, with 60 °C identified as the optimal curing temperature for achieving the highest compressive strength, split tensile strength, and elasticity modulus.
DESIGN OF REINFORCED CONCRETE STRUCTURE WITH ORDINARY MOMENT FRAME IN LOW SEISMIC REGION (CASE STUDY: MIDRISE SHOPPING BUILDING IN SINGKAWANG CITY) Zulshaec, Yongga; Herwani, Herwani; Yusuf, Muhammad
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.v24i1.75755

Abstract

This paper focuses on the design of a reinforced concrete structure for an eight-story shopping building in Singkawang City, located in a low to moderate seismic area. The study integrates relevant design considerations in response to the region's seismic conditions. Through structural analysis, the building is categorized as seismic design category B due to moderate seismic risk, leading to the selection of an ordinary moment-resisting frame system compliant with SNI 1726:2019. Emphasis is placed on the importance of using such a system to enhance ductility and prevent brittleness during earthquakes.The research emphasizes the need to design structures capable of withstanding various loads, including dead, superimposed dead, live, wind, and earthquake loads, particularly in West Kalimantan, known for its historically low to moderate seismic activity. Recent earthquake records highlight the necessity of earthquake-resistant design for safety and durability. Structural analysis confirms the building's stability against seismic forces, with a modal participation ratio meeting SNI 1726:2019 requirements, indicating robust response under seismic loads.The study also assesses inter-story drift and P-Delta effects to ensure they meet allowable limits, which is crucial for preserving structural integrity and preventing post-earthquake instability. A detailed reinforcement design following SNI 2847:2019 enhances structural strength and durability, especially when under seismic loading. The foundation design uses tailored hollow spun piles to provide sufficient bearing capacity and stability. This approach demonstrates resilience against potential seismic events in low-to-moderate seismic regions, highlighting the importance of integrating seismic design principles and ductility considerations for effective earthquake hazard mitigation.
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.
Pengembangan Strategi dan Metode Pembelajaran Pendidikan Agama Islam ., Jeprianto; ., Herwani; pengelola, pengelola
Tasyri` : Jurnal Tarbiyah-Syari`ah-Islamiyah Vol. 28 No. 02 (2021): Oktober 2021
Publisher : LPPM STAI Ihyaul Ulum Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52166/tasyri.v28i02.133

Abstract

Strategy is a very influential component in the world of education, one of which is in the learning process of islamic religious education. This islamic religious education learning strategy is one of the efforts to apply how the values of islamic teachings that axist in eact material can be learned, understood and can be practiced by students in veryday life. In this case strategies and methods in learning are needed by an aducator because strategies and methods are tools or ways to make it easier for an educator to convey learning material so that the results obtained re in accordance with what the educator wants to expect. Therefore strategies and methods must go hand in hand in the teaching process.
Sekolah sebagai Sarana Sosialisasi dan Perkembangan Kepribadian Anak ., Herwani; Awalia, Rubi; Saputra, Husyin; ., Supatmi
Tasyri` : Jurnal Tarbiyah-Syari`ah-Islamiyah Vol. 30 No. 1 (2023): April 2023
Publisher : LPPM STAI Ihyaul Ulum Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52166/tasyri.v30i1.217

Abstract

Sekolah mempunyai peran penting dalam pembentukan kepribadian siswa karena sekolah adalah wadah atau tempat proses belajar seseorang dari tidak tahu menjadi tahu, tidak mengerti menjadi mengerti dan tidak terdidik menjadi berpendidikan. Peranan sekolah sebagai lembaga yang membantu lingkungan keluarga, maka sekolah bertugas mendidik dan mengajar serta memperbaiki dan memperhalus tingkah laku siswa yang dibawa dari keluarganya. Pembentukan kepribadian akhlak mulia siswa melalui sosialisasi berupa pembinaan, bimbingan, dan pengawasan telah sekolah terapkan. Kepribadian adalah cara seseorang berinteraksi dengan orang lain. Hubungan sesorang dengan kepribadiaan dengan pembelajaran di sekolah yang telah di pelajari untuk di terapkan ke lingkungan masyarakat. Kepribadiaan seseorang berbeda-beda tergantung awal pembentukan kepribadian itu terjadi yaitu lingkungan keluarga. Jika seorang anak terlahir lingkungan berkepribadian pemalu maka akan bisa membentuk kepribadian yang malu baik dari awal memasuki tingkat sekolah hingga kepada lingkungan masyarakat.
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 Lase, Firman Kornel 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