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All Journal Borneo Engineering: Jurnal Teknik Sipil REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development JCOMENT (Journal of Community Empowerment) Paulus Civil Engineering Journal Jurnal Surya Teknika
Wahidin, Suci Amalia Namira
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The Prospects for the Development of Souraja Cultural Heritage Area for Community-Based Tourism Development, Palu City Harifuddin Thahir; Irdinal Arief; Noor Riefma Hidayah; Suci Amalia Namira
JCOMENT (Journal of Community Empowerment) Vol. 4 No. 1 (2023): Community Empowerment
Publisher : The Journal Publishing

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

Abstract

Community-based tourism can create employment opportunities for local communities and reduce poverty, were tourism revenues from tourism service. In the development of facilities and infrastructure needed by the development prospects, apart from being a tourist object, the community plays a role in its development and is integrated with the surrounding environment. The thing of tourism is in the form of cultural heritage buildings located in urban areas so that this becomes integrated with the local community and the Government. This happened in Palu City, but a natural disaster (earthquake, liquefaction and tsunami) occurred on 2018 which resulted in damage some buildings, one of which was the Souraja traditional house located in Kampung Lere, Palu. The "Souraja" Traditional House is one of the physical remains of the cultural heritage of the past ancestors, namely the Kingdom of Palu, which was founded in 1892. After the disaster, the Souraja cultural heritage will be rehabilitated. Still, it will also revitalize the area because since long ago, the people of Kampung Lere, who are local people from the environment around Souraja, have wanted to be fully involved in developing and reviving Kampung Lere to be better known in urban cultural tourism which has past historical values of the Kaili tribe on the coast of Palu City. The finding is that the prospect of development will be an opportunity to revive the environmental area around Souraja for the Kampung Lere community to develop urban tourism with the Souraja cultural heritage as a regional landmark.
Studi Pengaruh Penambahan Abu Batu Sebagai Pengganti Pasir Pada Beton Mutu K-250 Listiawaty, H.; Namira, S.A.; Aryasin, M.; Muhajir, M.; Martani, S.W.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 6 Issue 1 (March 2025)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v6i1.712

Abstract

The handling of stone ash waste from the by-product of the Quarry C crushed stone factory with the number of factories along the Palu-Donggala road has not been handled properly until now. The potential for utilization for building materials such as lightweight concrete, paving blocks and rosters as well as fillers for asphalt concrete mixtures and rigid pavements at airports is still large to be developed. Based on this, stone ash waste can be used as a building material to build structures and infrastructure. However, the characteristics of the basic materials and building materials made from stone ash waste must be re-tested. The analysis was carried out on the results of the concrete compressive strength test (SNI 03-1974-2011), which is a comparative analysis of various conditions of the age of the test object and the percentage of stone ash addition to the weight of fine aggregate obtained from the laboratory. The addition of stone ash as a partial replacement for fine aggregate can increase the compressive strength of concrete by up to 9.64% compared to the compressive strength of normal concrete. The optimum level of stone ash addition as a partial replacement for fine aggregate occurs at a variation of 20% stone ash from the weight of fine aggregate. The compressive strength of 28-day concrete that occurs in this variation is 23.590 MPa, while the compressive strength of concrete without the addition of stone ash is 21.515 MPa. The compressive strength value of concrete with 50% rock ash content has the lowest compressive strength value of 21.137 MPa, where there is a decrease in the compressive strength value of 1.75% compared to the compressive strength value of concrete without the addition of stone ash..
ANALISIS STABILITAS LERENG MENGGUNAKAN DINDING PENAHAN TANAH DENGAN PERKUATAN BOR PILE (STUDI KASUS PADA RUAS JALAN PALELEH – LOKODOKA KM. 685+100) Wahidin, Suci Amalia Namira; Arief, Dede Irham; Ramadhan, Bayu Rahmat; Allo, Misel Boro
Surya Teknika Vol. 2 No. 1 (2025): Jurnal Surya Teknika Volume 2 Nomor 1 2025
Publisher : Fakultas Teknik Universitas Muhammadiyah Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31934/jst.v2i1.7642

Abstract

Tanah longsor merupakan salah satu ancaman utama terhadap infrastruktur jalan di wilayah Sulawesi Tengah yang memiliki kondisi topografi kompleks. Penelitian ini bertujuan untuk menganalisis stabilitas lereng pada ruas jalan Paleleh–Lokodoka KM 685+100 dengan pendekatan penggunaan dinding penahan tanah tipe kantilever yang diperkuat dengan bored pile. Metode analisis yang digunakan adalah Finite Element Method (FEM) menggunakan pemodelan numerik 2D, dengan mempertimbangkan beban lalu lintas dan beban gempa bumi. Hasil analisis menunjukkan bahwa desain dinding penahan tanah dengan perkuatan bored pile menghasilkan nilai faktor keamanan (SF) sebesar 1,561 pada kondisi layan dan 1,120 pada kondisi gempa, yang telah memenuhi ketentuan dalam SNI 8460-2017. Disimpulkan bahwa penggunaan bored pilesebagai perkuatan memberikan kontribusi signifikan terhadap kestabilan lereng dan dapat menjadi solusi teknis yang efektif untuk kawasan rawan longsor.
Evaluasi Perilaku Mekanik Mortar Berkelanjutan menggunakan Butiran Plastic PET (Polyethylene Terephthalate) sebagai Substitusi Agregat Halus Allo, Misel Boro; Ramadhan, Bayu Rahmat; Wahidin, Suci Amalia Namira; Verucha, Novacharisma V.; Akifa, Sri Nur; Said, Sugira; Seril, Boroallo
Paulus Civil Engineering Journal Vol. 7 No. 2 (2025): Paulus Civil Engineering Journal V7N2 2025
Publisher : Universitas Kristen Indonesia Paulus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/qk4qny98

Abstract

Transformasi penggunaan material tidak terbarukan menjadi terbarukan menjadi material inovatif yang berkelanjutan. Limbah plastik tahunan meningkat dan memperparah kerusakan lingkungan. Peningkatan limbah plastic yang sulit terurai, dan menimbulkan gas beracun saat di bakar dapat merusak alam. Memanfaatkan sampah ini dalam produksi beton dapat membantu melestarikan sumber daya bangunan. Penelitian ini untuk menguji perilaku mekanik mortar dengan pengantian agregat menggunakan limbah plastic PET (butiran) dengan variasi 0%, 3% dan 5% dari berat pasir. Pengujian dilakukan pada umur 7 dan 28 hari. Penelitian ini mengevaluasi flow mortar, density, dan kuat tekan. Penggantian agregat halus menggunakan agregat plastik PET sampai 5% dalam campuran mortar menunjukkan dampak positif pada nilai kuat tekan mortar dan material dapat menyerap energi yang baik. Penelitian ini menunjukkan peningkatan kekuatan tekan mortar hingga 1.16 kali dibandingkan campuran kontrol saat menggunakan 5% agregat limbah PET sebagai agregat limbah plastik PET dalam campuran mortar sehingga mendukung pengembangan bahan konstruksi yang berkelanjutan
Pengaruh Rasio Air–Pengikat terhadap Waktu Pengikatan dan Kuat Tekan Pasta Geopolimer Wahidin, Suci Amalia Namira; Rasyid, Moh. Iqbal; Adam, Andi Arham; Akifa, Sri Nur; Ramadhan, Bayu Rahmat
Paulus Civil Engineering Journal Vol. 7 No. 3 (2025): Paulus Civil Engineering Journal V7N3 2025
Publisher : Universitas Kristen Indonesia Paulus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/kad1vv33

Abstract

Penelitian ini bertujuan untuk mengevaluasi pengaruh rasio air terhadap bahan pengikat terhadap waktu pengikatan dan kuat tekan pasta geopolimer berbasis abu terbang tipe F dari PLTU Mpanau, Palu, dengan penambahan kapur padam (Ca(OH)₂) sebesar 10% dari berat bahan dasar. Aktivator yang digunakan terdiri dari sodium silikat dan sodium hidroksida, serta air murni tanpa kandungan mineral. Variasi dosis Na₂O yang digunakan adalah 6%, 8%, dan 10%, dengan rasio air terhadap bahan pengikat bervariasi dari 0,24 hingga 0,42. Benda uji berbentuk silinder berdiameter 2,5 cm dan tinggi 5 cm, dengan pengujian kuat tekan dilakukan pada umur 3, 7, 14, dan 28 hari. Hasil menunjukkan bahwa setiap dosis Na₂O memiliki rentang rasio air terhadap bahan pengikat tertentu yang menghasilkan waktu pengikatan ideal. Dosis Na₂O 10% menunjukkan rasio optimal antara 0,26 – 0,34, sedangkan pada dosis 8% optimum terjadi pada rasio 0,42, dan pada dosis 6% berada pada kisaran 0,38 – 0,40. Kuat tekan tertinggi sebesar 22,68 MPa diperoleh pada dosis Na₂O 10% dengan rasio air terhadap bahan pengikat sebesar 0,28 pada umur 28 hari.
Performa Kuat Tekan Mortar Geopolimer Berbasis Fly Ash dengan Variasi Rasio Alkali Aktivator: Performa Kuat Tekan Mortar Geopolimer Berbasis Fly Ash dengan Variasi Sri Nur Akifa; Akifa, Sri Nur; Tikara, Medi; Adam, Andi Arham; Ramadhan, Bayu Rahmat; Wahidin, Suci Amalia Namira
Paulus Civil Engineering Journal Vol. 7 No. 3 (2025): Paulus Civil Engineering Journal V7N3 2025
Publisher : Universitas Kristen Indonesia Paulus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/3y5tev29

Abstract

Penelitian ini bertujuan untuk mengevaluasi pengaruh variasi komposisi alkali aktivator terhadap kuat tekan mortar geopolimer berbasis abu terbang tipe F. Abu terbang diperoleh dari PLTU Mpanau dan diaktivasi menggunakan kombinasi Sodium Silikat (Na₂SiO₃) dan Sodium Hidroksida (NaOH). Benda uji berupa mortar berbentuk kubus berukuran 50 × 50 × 50 mm, dengan rasio massa abu terbang terhadap pasir sebesar 1 : 2,75 dan rasio air terhadap padatan (w/s) sebesar 0,35. Variasi dosis aktivator yang digunakan adalah 25%, 40%, dan 55% terhadap berat abu terbang, dengan perbandingan Sodium Silikat terhadap total aktivator (W/A) sebesar 0; 0,3; 0,5; 0,7; dan 1. Pengujian kuat tekan dilakukan pada umur 3, 7, 14, dan 28 hari untuk mengevaluasi perkembangan kekuatan mekanik seiring waktu. Hasil menunjukkan bahwa peningkatan dosis aktivator dan nilai W/A secara signifikan mempengaruhi karakteristik kuat tekan mortar. Kuat tekan optimum sebesar 24,72 MPa tercapai pada komposisi dosis aktivator 55% dan rasio W/A 0,5 pada umur 28 hari. Nilai tersebut menunjukkan bahwa mortar geopolimer dengan komposisi tersebut memiliki potensi untuk diaplikasikan sebagai elemen struktural alternatif yang ramah lingkungan.
Effect of Activator Composition on the Setting Time and Compressive Srength Of Fly Ash–Lime-Based Geopolymer Paste Ramadhan, B.R.; Lonardya, C.J.; Adam, A.A.; Akifa, S.N.; Wahidin, S.N.; Payung, F.R.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 6 Issue 2 (September 2025)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v6i2.766

Abstract

This study aims to investigate the optimal composition of geopolymer paste based on fly ash and lime to achieve ambient temperature hardening, ideal setting time, and high compressive strength. The primary materials used include Class F fly ash from the Mpanau coal-fired power plant and hydrated lime (calcium hydroxide) at 5% of the fly ash weight. The activators employed were Sodium Silicate (Na2SiO3) and Sodium Hydroxide (NaOH), with Na2O dosage variations of 7.5%, 10%, and 12.5%, and activator modulus (SiO2/Na2O ratio) variations of 0.75, 1.00, and 1.25. The specimens were cylindrical with a diameter of 25 mm and a height of 50 mm, and compressive strength tests were conducted at 3, 7, 14, and 28 days. The results showed that the optimum setting time was achieved at a Na2O dosage of 7.5% with an activator modulus of 0.75 and 1.00, yielding setting times of 88.67 and 60.94 minutes, respectively. The highest compressive strength was recorded at a Na2O dosage of 10% with an activator modulus of 1.25, reaching 29.76 MPa at 28 days. These findings suggest that the composition of the alkaline activator significantly influences the early-age properties and mechanical performance of fly ash–lime-based geopolymer paste
Effect of Multi-Variable Mix Composition on the Setting Time and Flow Properties of Fly Ash-GGBFS Geopolymer Mortar Ramadhan, Bayu Rahmat; Adam, Andi Arham; Akifa, Sri Nur; Wahidin, Suci Amalia Namira; Verucha, Novacharisma Vindiantri; Allo, Misel Borro
Borneo Engineering: Jurnal Teknik Sipil Volume 9 Nomor 2 Tahun 2025
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/be.v9i2.310

Abstract

The development of eco-friendly construction materials increasingly emphasizes the utilization of industrial waste, with fly ash being a prominent alternative binder to Portland cement. However, Type F fly ash exhibits limitations due to its inherently low calcium (CaO) content, which results in slow geopolymerization reactivity and typically necessitates high-temperature curing to achieve optimal early strength. This research aims to optimize the utilization of 100% fly ash as a binder in geopolymer mortar by incorporating Ground Granulated Blast Furnace Slag (GGBFS). GGBFS serves as a source of reactive calcium, specifically to accelerate C-A-S-H gel formation. The alkaline activator used comprises NaOH and Na₂SiO₃ solutions, varied at specific ratios. The experimental program investigates the influence of three key parameters: GGBFS content (10%, 20%, and 30% by fly ash weight), activator/binder ratio (30%, 35%, and 40%), and aggregate/binder ratio (2.25, 2.5, and 2.75). The primary focus is to evaluate their effect on the fresh properties of geopolymer mortar, particularly flowability and setting time, under ambient curing conditions (without heat treatment). The findings of this study are expected to demonstrate that GGBFS addition significantly enhances early reactivity and facilitates the development of geopolymer mortar suitable for ambient temperature applications. This research is anticipated to contribute to the advancement of sustainable construction materials through the optimal utilization of industrial waste, especially for applications where high-temperature curing is impractical.
Co-Authors Adam, A.A. Allo, Misel Borro Andi Arham Adam Arief, Dede Irham Aryasin, M. Bayu Rahmat Ramadhan Harifuddin Thahir Irdinal Arief Listiawaty, H. Lonardya, C.J. M. Muhajir, M. Martani, S.W. Misel Boro Allo Noor Riefma Hidayah Payung, F.R. Rasyid, Moh. Iqbal Said, Sugira Seril, Boroallo Sri Nur Akifa Tikara, Medi Verucha, Novacharisma V. Verucha, Novacharisma Vindiantri