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All Journal MEDIA KOMUNIKASI TEKNIK SIPIL Rang Teknik Journal SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan WAKTU: Jurnal Teknik UNIPA AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT Community Development Journal: Jurnal Pengabdian Masyarakat JURNAL TEKNIK SIPIL UNAYA Jurnal Teknik Sipil PROSIDING SEMINAR NASIONAL PENELITIAN DAN PENGABDIAN KEPADA MASYARAKAT (SNPPM) UNIVERSITAS MUHAMMADIYAH METRO
Rahma Nindya Ayu Hapsari
Universitas Negeri Semarang
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Peningkatan Ketahanan Kelelahan Sambungan Pelat Baja untuk Konservasi dan Pemeliharaan Bangunan dengan Menggunakan Teknik Cold-Expansion Hapsari, Rahma Nindya Ayu; Taveriyanto, Arie; Sutarto, Agung; Sholahudin, Farhan; Turhamun; Audia Putri, Anggi; Oberto Simanugkalit, Amjel; Anfasa Aulia, Faiq
Jurnal Teknik Sipil Vol. 18 No. 1 (2025): Juni 2025
Publisher : Faculty Of Engineering University 17 August 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/fkwf5y07

Abstract

Sambungan pelat baja merupakan komponen penting dalam sistem struktur bangunan, namun rentan terhadap kerusakan akibat beban berulang yang dapat menyebabkan inisiasi retak di sekitar lubang baut. Teknik cold-expansion bekerja dengan menciptakan tegangan sisa kompresif di sekitar lubang baut melalui deformasi plastis, sehingga mampu menghambat pertumbuhan retak dan meningkatkan kapasitas tarik sambungan. Metode penelitian ini menggunakan pendekatan eksperimen dengan pengujian tarik statik pada dua kelompok benda uji: tanpa perlakuan dan dengan perlakuan cold-expansion. Variasi yang digunakan meliputi diameter baut 6 mm dan 8 mm pada pelat baja setebal 3 mm. Hasil menunjukkan bahwa teknik cold-expansion mampu meningkatkan tegangan maksimum rerata sebesar 11,87% untuk baut 6 mm dan sebesar 6,71% untuk baut 8 mm. Dengan demikian, cold-expansion terbukti efektif sebagai metode perkuatan sambungan baja dalam mendukung konservasi dan pemeliharaan bangunan terhadap beban ekstrem.
Penguatan kesadaran akan pentingnya marka jalan untuk keselamatan anak sekolah di SDN 04 Karangsari Nurti Kusuma Anggraini; Rahma Nindya Ayu Hapsari; Nurul Yuhanafia; Retno Mayasari; Muhammad Faizal Ardhiansyah Arifin; Rifky Raif Setianto; Sayful Ammar; Nathanael Legawa Christian
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 9, No 5 (2025): September
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v9i5.33945

Abstract

AbstrakKawasan sekolah pada jam masuk dan pulang selalu ramai, sehingga berpotensi menyebabkan terjadinya kecelakaan lalu lintas. Salah satu solusi mengurangi dampak terjadinya kecelakan lalu lintas dengan membuat marka jalan. Marka jalan menjadi satu hal penting dalam keselamatan, kenyamanan, dan ketertiban untuk pengguna jalan, baik untuk anak-anak sekolah, guru, maupun warga masyarakat setempat. Marka jalan berfungsi sebagai tanda pemberi isyarat lalu lintas dan alat pengendali serta pengaman bagi pengguna jalan. Permasalahan yang ada yaitu belum adanya marka jalan yang terpasang di SDN 04 Karangsari. Sehingga tidak terjaminnya keselamatan khususnya anak sekolah, maka perlu direncanakan fasilitas marka jalan yang memenuhi kebutuhan di SDN 04 Karangsari. Tujuan dari kegiatan pengabdian kepada masyarakat ini adalah memberikan fasilitas marka jalan guna meningkatkan keselamatan dan memberikan rasa aman kepada anak sekolah ketika menyeberang. Solusi permasalahan yang diberikan pada kegiatan ini adalah dilakukannya pembuatan marka jalan dan memasang rambu lalu lintas seperti rambu menyeberang, rambu hati-hati dan rambu menurunkan kecepatan serta melibatkan partisipasi aktif masyarakat dalam pelaksanannya. Hasil kegiatan ini diharapkan dapat bermanfaat bagi anak-anak sekolah, guru, maupun masyarakat setempat, sehingga dapat meningkatkan keselamatan anak-anak sekolah dengan mengurangi risiko kecelakaan lalu lintas di area sekolah. Kata kunci: keselamatan anak sekolah; marka jalan; rambu lalu lintas. AbstractThe school area is always crowded during the hours of entry and exit, so it has the potential to cause traffic accidents. One solution to reduce the impact of traffic accidents is to make road markings. Road markings are one of the important factors in the safety, comfort, and order for road users, both for school children, teachers, and the local community. Road markings function as a traffic signal and a control and safety device for road users. The existing problem is that there are no road markings installed at SDN 04 Karangsari. So that the safety is not guaranteed, especially for school children, it is necessary to plan road marking facilities that meet the needs at SDN 04 Karangsari. The purpose of this community service activity is to provide road marking facilities to improve safety and provide a sense of security to school children when crossing. The solution to the problem given in this activity is to make road markings and install traffic signs such as crossing signs, caution signs and speed signs and involve active community participation in its implementation. The results of this activity are expected to be beneficial for school children, teachers, and the local community, so that it can improve the safety of school children by reducing the risk of traffic accidents in the school area. Keywords: road markings; school safety; traffic signs.
THE EFFECT OF SEASHELL WASTE AS FINE AGGREGATE SUBSTITUTION ON THE COMPRESSIVE STRENGTH OF ECO-FRIENDLY CONCRETE Rahma Nindya Ayu Hapsari; Indra Agung Hermawan; Faudi Rahmat Riyadi; Neriska Aurenia
Rang Teknik Journal Vol 9, No 1 (2026): Vol. 9 No. 1 Januari 2026
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31869/rtj.v9i1.6268

Abstract

The widespread use of concrete in the construction industry contributes significantly to environmental degradation, primarily through CO₂ emissions from cement production and natural resource depletion for aggregate sourcing. This study investigates the feasibility of using seashell waste as a partial replacement for fine aggregate in concrete, aiming to maintain structural performance while promoting sustainability. A control concrete mix and an innovative mix incorporating seashell waste were prepared, with compressive strength tests conducted at 28 days. The results show that the seashell concrete achieved a compressive strength of 35.09 MPa, slightly surpassing the control concrete's 35 MPa. This minor increase is attributed to the calcium carbonate content of seashells, which contributes to a stable cementitious matrix similar to that of limestone.The findings suggest that seashell waste, abundant in coastal regions, can be effectively utilized as an eco-friendly alternative in concrete production without compromising structural integrity. By partially substituting fine aggregates with seashells, this study highlights a potential solution for reducing reliance on natural sand while supporting marine waste management. This research provides a basis for future studies on optimizing seashell content in concrete and exploring its durability under varying environmental conditions, contributing to sustainable construction practices.
Co-Authors Adhe Verdianto Hidayat Agung Sutarto Agus Bambang Siswanto Amrita Winaya Shita Dewi Anak Agung Istri Sri Wiadnyani Anfasa Aulia, Faiq Anggraini, Nurti Kusuma Ardiyan Adhi Wibowo Arie Taveriyanto, Arie Audia Putri, Anggi Budiono Joko Nugroho Dhony Priyo Suseno Dicky Nasokha Edrial Sulistiyo Fadli Bondan Sugiharta Faudi Rahmat Riyadi Ilham Nurhuda Indra Agung Hermawan Istianti, Monica Ayu Khirza Faiz Dzikrillah Listiyono Budi Luthfiyyatus Sa'diyyah M. Faizal Ardhiansyah A. Mayasari, Retno Muhammad Faizal Ardhiansyah Arifin Muna, Yunita Miftahul Nathanael Legawa Christian Neriska Aurenia Nicko Fadhil Muhammad Nuroji Nuroji Nurti Kusuma Anggraini NURUL YUHANAFIA Nurul Yuhanafia Oberto Simanugkalit, Amjel Rifky Raif Setianto Sayful Ammar Sholahudin, Farhan Syamsul Karim Syamsul Ma’arif Teguh Prihanto Turhamun Zulfiqor, Rizal Ahmad