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All Journal Jurnal Qua Teknika G-Tech : Jurnal Teknologi Terapan
Syahidah Fani Nastiti
Universitas Negeri Malang
Computer Science & IT Decision Sciences, Operations Research & Management Energy Engineering

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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.
PENGARUH RASIO L/D ANTARA LAPISAN MORTAR GEOPOLIMER BERBAHAN DASAR FLY ASH TERHADAP KUAT TEKAN BETON DENGAN SEAWATER CURING Syahidah Fani Nastiti
Jurnal Qua Teknika Vol 13 No 2 (2023): September 2023
Publisher : Universitas Islam Balitar Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35457/quateknika.v13i2.2840

Abstract

ABSTRAK The performance and durability of concrete in construction is essential to maintain the sustainability and protection of the material. Particularly in construction in marine environments, the attack of aggressive chemical compounds can affect concrete and accelerate deterioration. This research aims to improve the performance and durability of concrete in construction in marine environments by using additional protection methods such as Surface Applied Protection. One of the materials used is geopolymer mortar that uses fly ash as a base material. This study shows that geopolymer mortar contributes positively to the compressive strength and durability of concrete. The thickness of the geopolymer mortar layer affected the mechanical properties of the concrete, and 4 cm thick gave the highest compressive strength results. The addition of geopolymer mortar needs to be adjusted to the compressive strength of the concrete and pay attention to the layer thickness for optimal results. Kata kunci: repair material, marine environment, L/D ratio, geopolymer mortar, compressive strength
Co-Authors Agil Fitri Handayani Dzul Fikri Muhammad Gading Chempakadewi Muhammad Hamza