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All Journal BERKALA SAINSTEK IJIMCE : International Journal of Innovation in Mechanical Construction and Energy
Oni Guspari
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Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemistry Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Physics

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Concrete Durability Performance Against Seawater As Curing And Mixing Water Zulfira Mirani; mukhlis, Mukhlis; Oni Guspari; Andini Meysi Ullanda; Yosi Arista
IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Vol. 1 No. 3 (2024): IJIMCE : International Journal of Innovation in Mechanical Construction and Ene
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/ijimce.v1i3.45

Abstract

This research aims to determine the effect of seawater on concrete durability and to assess the compressive strength of concrete based on variations in concrete mixtures and curing methods. The tests conducted include testing the characteristics of coarse and fine aggregate materials to obtain accurate concrete mix planning, followed by compressive strength testing after curing for 3, 7, 14, 21, and 28 days with four different mix and curing variations. The results show that in variation 1, the compressive strength of concrete cured with seawater for 14 days was 9.81% higher than that cured with freshwater. In variation 2, the compressive strength of concrete mixed with seawater and freshwater cured for 3 days was 43.91% higher compared to seawater curing. In variation 3, the compressive strength of concrete with a freshwater-seawater mix cured for 14 days was 44.65% higher than that of the seawater-only mix. In variation 4, the compressive strength of concrete with a seawater-freshwater mix cured for 3 days was 15.54% higher than that of the freshwater-only mix.
Design of Special Moment Resisting Frame Structure (SRPMK) for 5 Floor Buildings Based on SNI 2847-2019 and SNI 1726-2019 in Padang City Yanto, Heri; Oni Guspari
BERKALA SAINSTEK Vol. 14 No. 2 (2026)
Publisher : University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v14i2.60008

Abstract

Padang City is located in one of the highest seismic hazard zones in Indonesia, situated near the Sunda Megathrust and the Sumatran Fault System. Constructing earthquake-resistant buildings in this region is not only a technical necessity but also a life-safety imperative. This research outlines the design of a five-storey office building utilizing the Special Moment Resisting Frame (SMRF) system in accordance with SNI 2847-2019 and SNI 1726-2019 standards. Seismic forces were modeled with the response spectrum approach, and a 3D Structural Analysis Software was utilized for structural evaluation. The site's soil classification resulted in a medium soil (SD) category, with SDS = 1.024 g and SD1 = 0.702 g, and the seismic response modification coefficient (R) = 8. The structural dimensions were established as follows: slab thickness of 130 mm, column size of 650 mm × 650 mm, primary beam size of 400 mm × 650 mm, secondary beam size of 250 mm × 450 mm, and tie beam size of 400 mm × 600 mm. Every reinforcement derived from each structural component meets the standards of SNI 2847-2019, the Standard of Structural Concrete for Buildings.
Co-Authors Andini Meysi Ullanda Heri yanto Mukhlis Mukhlis Yosi Arista Zulfira Mirani