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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur Jurnal Teknik Sipil dan Perencanaan Bangunan Civil Engineering Dimension SIKLUS: Jurnal Teknik Sipil Jurnal Aplikasi Teknik Sipil Martabe : Jurnal Pengabdian Kepada Masyarakat Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Journal of Community Development Jurnal Sistem Informasi Dan E-Bisnis JAPI: Jurnal Akses Pengabdian Indonesia Jurnal Inovasi Teknologi dan Edukasi Teknik Proceeding of The International Conferences on Engineering Sciences
Nindyawati Nindyawati
Universitas Negeri Malang
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Nursing Public Health Social Sciences Transportation Other

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Capillary Imbibition of Concrete Containing Cold Bonded Fly Ash-Based Lightweight Aggregate in a Salt Environment Risdanareni, Puput; Sulton, Mohammad; Nindyawati, Nindyawati; Rosyidi, Ditya Hafidz; Ekaputri, Januarti Jaya; Razak, Rafiza Binti Abd.; Abdullah, Mohd Mustafa Al Bakri
Civil Engineering Dimension Vol. 28 No. 1 (2026): MARCH 2026
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.28.1.23-33

Abstract

Cold bonded lightweight aggregate generated from fly ash (FA LWA) has become an interesting approach to increase the consumption of fly ash and prevent over-mining of natural aggregate. However, using the cold-bonded hardening method could increase the number of open pores in LWA, making the concrete containing this LWA face an increased risk of degradation due to water ingress. Thus, in this research, the effect of using FA LWA in concrete on the mechanical and transport properties in a salt environment is being investigated. Three aggregate replacement ratios of 0, 50, and 100% were applied, while the salt environment was mimicked with NaCl and Na2SO4 solutions. The results show that the optimum replacement rate of FA LWA was 50%. Regarding the transport properties, exposing concrete to a salt environment (NaCl or Na2SO4) proved to slow down the capillary imbibition rate slightly.
Ductylity Behavior of Laminated Hollow Section Bamboo Beam-Column Connections with Glue-in-Rod–Bracket System: An Environmentally Friendly Construction Material Solution Achmad Saiful Arifin; Karyadi Karyadi; Nindyawati Nindyawati; Eka Nurul Qomaliyah; Imam Mustofa
Proceeding of the International Conferences on Engineering Sciences Vol. 3 No. 1 (2026): January : Proceeding of the International Conferences on Engineering Sciences
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/iconfes.v3i1.185

Abstract

Wood consumption in Indonesia, which is expected to reach more than 64.84 million m³ by 2025, is putting enormous pressure on forests, as evidenced by the reduction in forest area through the clearing of 96,230 hectares of forest in 2023. To reduce dependence on wood as a building material, alternative materials with comparable physical and mechanical properties are needed. Bamboo, especially laminated bamboo, was chosen because it has high tensile strength, a short harvest time, and abundant availability. This study examines the behavior of hollow section laminated bamboo beam-column connections with a glue-in-rod-bracket system to determine the ductility of the connection under unidirectional (static) loads. An experimental method was used with the independent variables of diameter and number of bolts, while the dependent variables included the moment-rotation of the connection, stiffness, strength, and ductility. The results show that the average ductility values for 4 and 6 thread rods D6, D8, and D10 mostly meet the SNI 1729 (≥1.25) and AISC 360 (rotation >0.03 rad) standards, with classifications ranging from "partially ductile" to "fully elastic." However, the 10-diameter 6-thread rod only achieved a ductility of 1.2, thus failing to meet the SNI standard. Based on the Handbook of Structural Steel Connection Design and Details, all connections fall into the non-seismic category because their ductility values are less than 3. These findings confirm the potential of laminated bamboo as an environmentally friendly construction material, while also providing technical guidelines for the design of non-seismic beam-column connections.
Analysis of the Use of Longbolt Type Connections Used as Main Connections in Folding Bridges Haniya Fatmawati; Nindyawati Nindyawati; Fajar Tamami
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 10, No 1 (2025): EDISI MARET 2025
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v10i1.6673

Abstract

This research examines the use of folding bridges as an alternative to mitigate the impact of natural disasters that frequently occur in Indonesia. Folding bridges have been used in Japan, but they are not commonly used in Indonesia. The use of folding bridges in Japan has been designed to accommodate vehicles with a maximum load of 13.8 kN, in addition to pedestrians. The folding bridge used in Japan takes up to 5 minutes to stretch over the river. This research was conducted by determining the design of the folding bridge, starting from the dimensions used to make test objects. The analysis conducted in this study is a numerical analysis of a folding bridge with a span size of 5,000 mm, utilizing a longbolt type A490 bolt connection with a diameter of 12 mm. In the longbolt connection, a 32 mm ball bearing is also installed to provide driving force for the folding bridge when it opens and closes. The main profile used in this study is the UNP profile with dimensions 75 x 40 x 5 mm. The steel girder used is a steel border plate with a thickness of 3 mm and plate specifications that have a pattern to prevent it from slipping easily. The manufacture of folding bridge test objects focuses on the primary function for pedestrians when evacuating an area affected by natural disasters. This research focuses on the numerical analysis of static loads, providing the results of deflection values, as well as the need for bolts used as connections on the main profile. Calculations related to the bolt requirements used refer to the requirements of SNI 1729: 2020. The determination of the deflection value produced by the folding bridge, which has been designed using software, refers to the requirements of RSNI T-03-2005.
Efektivitas Strategi Pelatihan Participatory Action Research (PAR) berbasis Corporate Social Responsibility (CSR)Terhadap Performa Hard Skill dan Soft Skill dalam Berwirausaha: Studi Kasus di Lembaga Pemasyarakatan Perempuan Deka Utami; Herlina Ike Oktaviani; Inawati Inawati; Katherine Ananda Yuliani; Yulias Prihatmoko; Nindyawati Nindyawati; Keppi Sukesi; Adi Santosa
Journal of Community Development Vol. 6 No. 2 (2025): Desember
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/comdev.v6i2.1783

Abstract

Penelitian ini mengkaji efektivitas strategi pelatihan berbasis Participatory Action Research (PAR) berbasis Corporate Social Responsibility (CSR) dalam meningkatkan Performa Hard Skill dan Soft Skill warga binaan perempuan (WBP) di Lembaga Pemasyarakatan Perempuan. Isu utama yang dibahas adalah kurangnya keterampilan berwirausaha dan stigma negatif yang melekat sehingga mempersulit WBP untuk mendapatkan pekerjaan setelah masa pembebasan. Jenis penelitian adalah kualitatif dengan pendekatan PAR dengan siklus Perencanaan–Aksi– Observasi – Refleksi. Jumlah sampel terlibat sebanyak 93 responden warga binaan wanita. Program pelatihan dilakukan dengan melibatkan kolaborasi pendidikan tinggi, dunia industri, instansi pemerintahan dan mitra productive. Hasil penelitian menunjukkan bahwa pendekatan strategi pelatihan berbasis PAR melalui kolaborasi dengan beberapa mitra, dapat meningkatkan keterampilan hardskill dan softskill dalam berwirausaha. Temuan ini merekomendasikan potensi PAR sebagai strategi efektif untuk memberikan perubahan positif dan pengetahuan kepada warga binaan perempuan (WBP) yaitu dengan cara membekali WBP dengan kompetensi mandiri yang diperlukan untuk reintegrasi ke masyarakat secara sukses.
Co-Authors Abdullah, Mohd Mustafa Al Bakri Achmad Saiful Arifin Adi Santosa Adi Susetyo Adjib Karjanto Agung Hariyono Ahmad Dardiri Al farisi, Moh. Salman Alfan Bramantya Aliyah Ardhana Riswari Ardhana Riswari, Aliyah Arifin, Achmad Saiful Blima Oktaviastuti Cantikawati, Khristia Ningsih Cynthia Permata Dewi Deka Utami Dewi, Permata Dwi Prastiyo Dzul Fikri Muhammad Edi Santoso Eka Nurul Qomaliyah Eka Sahputra Fajar Tamami Gede Agung Shri Parta Handayani, Agil Fitri Haniya Fatmawati Hariyono, Agung Herlina Ike Oktaviani Imam Mustofa Inawati inawati Indriyani Indriyani Irfan Adhe Mashudi Januarti Jaya Ekaputri Jayawarsa, A.A. Ketut Kanzenna Kurnia Ashshiddieqy Karyadi Karyadi Karyadi Karyadi Katherine Ananda Yuliani Keppi Sukesi Kristian, Matthew Hassel Kurnia Ashshiddieqy, Kanzenna Kusuma, Kadek Adyatma Teja M Husni Rifqo Maskur Efendi, Maskur Mohammad Sulton Muhammad Sulton Permata Dewi Puput Risdanareni Putri, Nadiyah Mulia Rahayuningsih Rahayuningsih Rahayuningsih Rahayuningsih, Rahayuningsih Razak, Rafiza Binti Abd. Risdanareni Risdanareni Risdanareni, Risdanareni Roro Sulaksitaningrum Rosyidi, Ditya Hafidz Rozali Toyib Sri Untari Sri Untari Syarif Abdullah, Daffa Tamami, Fajar Titi Rahayuningsih Titi Rahayuningsing Wahyo Hendarto Yoh Wahyu Risky Nurpitasari Yulias Prihatmoko