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All Journal Media Teknik Sipil REKA RACANA Jurnal Mahasiswa Jurusan Teknik Sipil Sinergi Rekayasa Sipil
Sri Murni Dewi
Jurusan Teknik Sipil Fakultas Teknik Universitas Brawijaya
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering

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PENGARUH SEMEN GROUND GRANULATED BLAST FURNACE SLAG (GGBFS) PADA KOMPOSISI SEMEN TERHADAP KUAT TEKAN MORTAR NUR HAFIDHI, MUHAMMAD MUSYFIQ; Dewi, Sri Murni; Waluyohadi, Indra
Jurnal Mahasiswa Jurusan Teknik Sipil Vol 1, No 1 (2022)
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Brawijaya

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Abstract

Semen Portland merupakan semen hidrolis yang dihasilkan dengan menggiling terak semen portland terutama yang terdiri atas kalsium silikat yang bersifat hidrolis dan digiling bersama-sama dengan bahan tambahan berupa satu atau lebih bentuk kristal senyawa kalsium sulfat dan boleh ditambah dengan tambahan lain. Umumnya material ini digunakan dalam campuran beton yaitu Fly Ash, slag (semen GGBFS), dan silica fume. Digunakan material-material tersebut tentunya berpengaruh pada kualitas mortar, kecepatan pengerasan, kepadatan, dan lainnya. Pada penelitian ini menggunakan material menggunakan semen OPC, semen GGBFS, silica fume dan agragat halus. Masing-masing material tersebut memiliki komposisi semen GGBFS 25%, 45%, 55% dan 65%, silica fume 10%, dan 0%. Benda uji berbentuk balok berukuran (5x5x5) cm dan dilakukan pengujian menggunakan prosedur kuat tekan dengan memvariasikan umur mortar terdiri dari 7 hari, 14 hari, 28 hari, 56 hari, 90 hari dan 120 hari. Berdasarkan hasil penelitian variasi kadar semen GGBFS memberikan pengaruh terhadap nilai kuat tekan mortar yang dihasilkan. Untuk kadar semen GGBFS dengan kuat tekan terbesar pada kadar 45% dengan umur 28 hari tanpa silica fume sebesar 32,56 MPa. Variasi umur memberikan pengaruh terhadap nilai kuat tekan mortar. Untuk semuar umur pengujian mengalami peningkatan dan penurunan. Peningkatan stabil dari umur 7 hari sampai dengan maksimal 28 hari setelah itu mengalami penurunan sampai dengan 120 hari. Hal ini juga dipengaruhi oleh kadar semen GGBFS dan silica fume. Variasi kada silica fume memberikan pengaruh terhadap nilai kuat tekan mortar. Untuk kadar silica fume kekuatan terbesar didapatkan pada komposisi semen GGBFS 25% yang berumur 28 hari sebesar 25,76 MPa.   Kata Kunci : Semen OPC, Semen GGBFS, Silica Fume, Kuat Tekan  
Strength and permeability of ferrocement structure by using ground granulated blast furnace slag Purwaningsih, Anis; Dewi, Sri Murni; Susanti, Lilya
SINERGI Vol 28, No 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2024.2.021

Abstract

A reinforced mortar type that can be created with a relatively thin thickness is ferrocement. Using ferrocement as a mechanically sound and sustainable building material has produced several benefits, including less use of raw materials, decreased accumulation of waste materials, and reduced greenhouse gas emissions. Cement as a constituent material of ferrocement is an environmentally unfriendly material; therefore, a more environmentally friendly cement replacement material is needed, namely Ground Granulated Blast Furnace Slag (GGBFS). Thus, creating sustainable (green) fertilizers is the main goal of this work. There are three primary stages to experimental work: Using slag cement (GGBFS) in place of partial cement of 0%, 10%, 20%, and 30% is the initial step. The primary reinforcement in the second level is wire-welded mesh, with volume fractions of support (Vf) of 1.2%, 1.8%, and 2.4%. During the final phase, a maximum of three different test objects were tested for compressive strength, water penetration depth, and flexure at a 28-day age. According to the findings, employing GGBFS led to good mortar performance. According to studies on mortar, the percentage of GGBFS utilized in a work may be determined by comparing the GGBFS substitution rates of 10%, 20%, and 30%, which show no differences in tendency. The test findings did not considerably improve the bending strength and cracking behavior of ferrocement reinforced with wire-welded mesh. One of them is influenced by the age of the concrete; at 28 days, the added material GGBFS has not yet reached its maximum strength, which results in a negligible improvement in bending strength and cracking behavior.
Flexural Performance of a Semi-Precast Two-Way Slab with AAC Infill and Hybrid Bamboo–Steel Reinforcement under Point Loading Dwi Putra, Bagus Ginanjar; Dewi, Sri Murni; Wisnumurti
Rekayasa Sipil Vol. 19 No. 3 (2025): Rekayasa Sipil Vol. 19 No. 3
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2025.019.03.3

Abstract

This study investigates the flexural performance of a semi-precast two-way ribbed slab system composed of a ferrocement bottom layer, Autoclaved Aerated Concrete (AAC) infill, and a hybrid bamboo–steel reinforcement configuration, subjected to a centrally applied point load. Two specimens were tested experimentally to evaluate their deflection behavior, crack patterns, and ultimate load capacity. The Finite Element Method (FEM) was also used to simulate the slab’s response and validate the experimental outcomes. The experimental results indicated ultimate load capacities of 5277 kg and 5000 kg for specimens S1 and S2, with corresponding maximum deflections of 6.80 mm and 6.90 mm. Diagonal cracks were observed originating from the load application point, which was consistent with flexural behavior under concentrated loading. The FEM simulation predicted an ultimate load of 5500 kg and a maximum deflection of 6.38 mm, resulting in a load deviation of +4.44% and a deflection deviation of –6.97% relative to the experimental average. Despite idealized assumptions in the numerical model, the FEM results showed good agreement with experimental observations in terms of deformation patterns and stress distribution. These findings demonstrate the potential of the proposed slab system for structural applications incorporating lightweight materials and alternative reinforcements. Further studies are recommended to explore its dynamic performance and practical feasibility in sustainable construction practices.
Co-Authors ., Claudia Abadiah, Yuli Nur Achfas Zacoeb Adinda Maharani, Ghea Nabila Afrizal, Danny Zuan Agostinho Francisco Pinto, Agostinho Francisco Ahmad Fitri Sujatmiko, Ahmad Fitri Aji Wijaya, Dwi Prasetyo Alangnabil, Muhammad Alfianto, Alif Alhadad, Muhammad Alista, Fenty Putri Alwafi Pujiraharjo AmbarPratiwi, Isma Arum Anderson, Jordi Anggara Putra, Dyorizky Imaduddin Anggara, Rizal Tri Anugrah, Ahmad Yuri Aprillinda, Sylvia Ari Wibowo Aulia, Rahmi Bestari, Afif Zuhair Carina Riando, Shabrina Bella Chiquita, Theadeira Christin Remayanti Christin Remayanti N Christin Remayanti N. Desinta Nur Lailasari, Desinta Nur Dessanda, Ryan Radya Desy Setyowulan Devi Nuralinah Devi Nurlinah, Devi Dini, Hanita Nurilina Dwi Putra, Bagus Ginanjar Dwijo Wibowo, Christoforus Aditya Eva Arifi Faizal, Muhammad Fathurrohman, Muhammad Fauzi, Rifqi Eka Hamzah, Muhammad Hendro Suseno Herdianto, Muhammad Irfan Imran Jamaran Indra Waluyohadi, Indra Indradi Wijatmiko Insani, Muhammad Hanif Iqbal, Faishal Kamilah, Fauziyah Khalis, Adli Khamal Barlev Ruslie Khusnul Prianto, Khusnul Kurniawan, Ari Tri Kurniawan, Fajri Lilya Susanti Mahendra, Muhammad Reza Maulana, Farhana Irvan Maulidianto, Mohammad Irvan Ming Narto Wijaya Morrida, Adam Akbar Mufika, Neyla Rohmah Muttaqin, Abdillah Najida, Izza Abhan Narayana, Jalu Nawawi, Imam Novriadi, Ilham Nugroho, Bagus Prasetyo Nugroho, Mahening Desantoro Nugroho, Rahadian Dwi NUR HAFIDHI, MUHAMMAD MUSYFIQ Pambudi, Aji Kukuh Pangestu, Rizki Ayu Paramita, Riezka Prilly Permana, Muhamad Hilman Prasetyo, Ferry Singgih Prastyo, Roni Dwi Prayoga, Yopi Adi Purwaningsih, Anis Puspitasari, Linda Andita Putri, Nanda Kartika Rachman, Muhammad Arif Ramadhani, Candra Kurniawan Ramadhani Ridho, Achmad Ali Robertus, Aristo Yonghy Roland Martin Simatupang S, Rinaldi S.Utami, Putri Dewanti Sani, Firzi Maulana Saputra, Bagus Arista Sasmita, Mochamad Hadi Setiawan, Ronny Shoufika, Alifinia Sitanggang, Gilbert Siti Nurlina Sugeng P. Budio Susanti, Lilya Susanti Taffareld, Muhammad Firhand Tedy Wonlele Tennyson, Albany W., Ming Narto Wicaksono, Ananta Dzaky Widya A, Erwin Wisnumurti Wisnumurti . Wresniwira, Sastria Yanuar, Lucky