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All Journal Pondasi Indonesian Journal of Innovation Science and Knowledge
Hastu Tatas Herarkhi
Universitas Islam Sultan Agung
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Physics Social Sciences Transportation

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STUDI EVALUASI DIMENSI DAN PENULANGAN KOLOM BANGUNAN GEDUNG TERMINAL TIPE A DI SALATIGA Hastu Tatas Herarkhi; Sumirin Sumirin; Rachmat Mudiyono
Pondasi Vol 30, No 2 (2025): Desember 2025
Publisher : UNISSULA Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/pondasi.v30i2.52748

Abstract

The development of transportation infrastructure demands structural designs that are efficient, economical, and compliant with safety standards. Columns, as primary structural elements in buildings, play a critical role in supporting vertical loads and maintaining overall structural stability. This research aims to analyze and optimize the dimensions and reinforcement of columns in the Terminal Type A Building in Salatiga to achieve material efficiency without compromising structural strength. This study is based on the existing condition of the revitalized terminal building, taking into account gravitational and seismic loads in accordance with SNI 2847:2019 and SNI 1726:2019 standards. Structural analysis was conducted using building structure software to obtain the structural response and evaluate the strength of the column elements. Optimization was carried out by varying the column dimensions and reinforcement configurations to obtain the most efficient outcome in terms of concrete volume and reinforcement weight. The results of the study indicate significant potential for material savings while maintaining compliance with strength performance standards. The optimization process offers an alternative column design that is more economical and efficient, providing valuable reference for practitioners and academics in the planning of similar building structures.
Tensile Property Characterization of Fiber-Reinforced Polymer as an External Strengthening Material for Reinforced Concrete Columns Hastu Tatas Herarkhi
Indonesian Journal of Innovation Science and Knowledge Vol. 3 No. 4 (2026): IJISK 2026
Publisher : Fakultas Pendidikan Ilmu Keguruan, Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/ijisk.v3i4.986

Abstract

The strengthening of existing reinforced concrete columns requires materials that can improve structural performance without significantly increasing member dimensions and self-weight. Fiber-Reinforced Polymer (FRP) offers a lightweight and high-strength alternative; however, its tensile properties must be experimentally characterized to establish reliable material parameters for external strengthening applications. This study aims to characterize and compare the tensile properties of Tyfo SCH 7UP and SCH-7UP FRP materials for potential application in reinforced concrete column strengthening. Tensile testing was conducted at the BRIN Polymer Laboratory, Serpong, Indonesia, in accordance with ASTM D3039/D3039M-17, using five specimens from each material group. The test data were analyzed based on tensile strength, nominal strain at break, coefficient of variation, and statistical comparison using Welch’s t-test and the Mann–Whitney test. The results showed that Tyfo SCH 7UP (R24080341) achieved a higher mean tensile strength of 1,384.37 ± 102.30 MPa, approximately 13.4% higher than SCH-7UP (R24080342), which recorded 1,220.77 ± 141.17 MPa. Conversely, SCH-7UP exhibited a higher mean nominal strain at break of 4.44 ± 1.15%, compared with 2.68 ± 0.32% for Tyfo SCH 7UP. The tensile-strength difference was not statistically significant (p = 0.072), whereas the strain-at-break difference was statistically significant (p = 0.024). These findings indicate distinct strength–deformation characteristics between the two FRP materials and provide initial material parameters for subsequent reinforced concrete column strengthening studies.
Co-Authors Rachmat Mudiyono Sumirin Sumirin