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All Journal G-Tech : Jurnal Teknologi Terapan Jadila: Journal of Development and Innovation in Language and Literature Education
Agil Fitri Handayani
Universitas Negeri Malang, Indonesia
Computer Science & IT Decision Sciences, Operations Research & Management Energy Engineering Languange, Linguistic, Communication & Media

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Journal : G-Tech : Jurnal Teknologi Terapan

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Cementitious Material of Marble Waste Industry as Alternative Approach to Sustainable Concrete Agil Fitri Handayani; Dzul Fikri Muhammad; Muhammad Arif Hidayatullah; Ninda Lufita Sari
G-Tech: Jurnal Teknologi Terapan Vol 7 No 3 (2023): G-Tech, Vol. 7 No. 3 Juli 2023
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/gtech.v7i3.2765

Abstract

Concrete needs to use alternative materials to reduce cement content to limit the effect of carbon emissions. Marble dust as a waste of the marble industry has very fine grains. X-Ray Fluorescence (X-RF) method was conducted to determine the mineral properties of marble dust. Marble dust was found to contain 98.62% Calcium Oxide (CaO), 0.17% Sulfur Trioxide (SO3) and some elements in small levels. To determine the impact of marble dust on the mechanical characteristics of concrete, an experimental study was conducted. Test specimens were made with four different levels of marble dust, namely 0%, 5%, 10%, and 15%. The experimental results showed that the optimum usage was 6.62% by weight of cement which gave the advantage of increasing the compressive strength of concrete by 11.77%.
Analisa Kerentanan Seismik pada Struktur Eksisting Menggunakan Metode Rapid Visual Screening di Kota Malang Dzul Fikri Muhammad; Syahidah Fani Nastiti; Agil Fitri Handayani; Gading Chempakadewi; Muhammad Hamza
G-Tech: Jurnal Teknologi Terapan Vol 7 No 4 (2023): G-Tech, Vol. 7 No. 4 Oktober 2023
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/gtech.v7i4.3136

Abstract

Several tectonic plates and a string of active volcanic mountain ranges encircle the Indonesian country, making a considerable part of Indonesia susceptible to both tectonic and volcanic earthquakes. The Indonesian National Standardization issued the latest earthquake regulations in 2019, replacing the regulations from 2012. As a result, the seismic map's PGA, Ss, and S1 values rose in comparison to the map from 2010.. With these elevated values, the regions in Indonesia become more vulnerable to earthquakes. The city of Malang itself falls within the moderate seismicity zone or is categorized as having a moderate level of vulnerability. The new regulations can be directly implemented for new buildings. To find out if they can handle the new seismic loads, existing structures must also be assessed.. This research focuses on assessing the vulnerability of old buildings to the new seismic loads in accordance with the updated regulations, using rapid visual screening. The results indicate that the examined buildings are still considered capable of withstanding the new seismic loads.
Co-Authors Dzul Fikri Muhammad Feny Martina Gading Chempakadewi Muhammad Arif Hidayatullah Muhammad Hamza Ninda Lufita Sari Syahidah Fani Nastiti Syamsul Rizal