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All Journal Civil Engineering Journal DINTEK Construction and Material Journal
Armin Aryadi
Sembilanbelas November Kolaka University
Civil Engineering, Building, Construction & Architecture Engineering

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BEHAVIOR OF CASTELLATED STEEL BEAM UNDER CYCLIC LOADS Armin Aryadi
DINTEK Vol 12 No 2 (2019): Dintek Vol 12 No. 2 September 2019
Publisher : Fakultas Teknik UMMU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (679.194 KB)

Abstract

Kastella steel profiles can be a practical solution in the construction , due to its characteristics which are quite favorable. The research aimed to determine (1) the failure shape of the castella beam, 2) the ability of castellan beam when used as the structural beam element resisting earthquake loads, and (3) the relationship of the behavioral parameters of the beam elements. The research used three types of tested beams made of the steel beams IWF 200 x 100 x 5.5 x 8; one pair of the normal beam (NB), one pair of the castella beam(CB), hexagonal-shape opening angle , the opening height of 0.6 H , the distance openings 9 cm , and the opening angle of 60. The testing used the portal system and loaded with the cyclicloads, in the form of displacement -controlled. The research results revealed that (1) indications failure of the tested beam due to yielding by flexure loads, (2) when compared to the flexure capacities of the NB beams, the increases of the flexure capacities of the CB were 84.36%, their partial displacement of ductility were 6,71, their full displacement of ductility were 6.86 beyond the limits of 5.2, the CB could be used as a structural element of the moment bearer frame system for the earthquake zone; (3) the flexural capacity was in proportion to the partial displacement and full displacement of ductility and inversely in proportion to the stiffness, the stiffness was inversely proportion to the partial displacement and full displacement of ductility. The relationship between these parameters is expressed in the model of equations.
Investigation of the Mechanical Behavior of Full-Scale Experimental Bugis-Makassar Timber House Structures Armin Aryadi; Herman Parung; Rita Irmawaty; Andi A. Amiruddin
Civil Engineering Journal Vol 10, No 6 (2024): June
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-06-04

Abstract

The Sulawesi region is located at the confluence of a smaller Philippine plate and three major global plates, namely the Indo-Australian, Pacific, and Eurasian. This strategic location makes Sulawesi and the surrounding earthquake-prone region in Indonesia. Recognizing the seismic vulnerability of this region, various measures, such as the use of houses on stilts, have been explored to enhance earthquake resistance. These structures are designed to avoid direct exposure to seismic energy, according to several reports on Indonesian earthquakes. In the last two years, an in-depth investigation has been carried out to analyze the behavior and resistance of Bugis Traditional Houses to earthquakes. Although simulation and computational studies are still in progress, the results show that Bugis-Makassar House on stilts maintains an elastic state with a high level of performance. Therefore, this study aimed to investigate the mechanical behavior of Bugis-Makassar stilt house structures using full-scale tests. During the investigation, experimental testing was conducted using house specimens measuring 1.5×2.3 m in the laboratory. A cyclic lateral loading analysis was performed using ISO 16670-2003 as a guide. The results showed that cyclic lateral loads caused house structures to sway, while the timber experienced minimal damage. Both the hysteresis energy, EH to EI, and the energy conversion ratio, GPE to ESE (ER), were found to be approximately balanced. This equilibrium suggested that seismic energy can be cyclically stored and released to reduce damage to structural elements. Doi: 10.28991/CEJ-2024-010-06-04 Full Text: PDF
EXPERIMENTAL STUDY OF COMPRESSIVE STRENGTH OF MORTAR K-50 WITH ADDITIVE MATERIALS FLY ASH AMP BAULA PT. SATRIA JASA SENTOSA Aryadi, Armin; Kadarinawati, Ana; Yatjong, Isramyano
Construction and Material Journal Vol. 7 No. 2 (2025): Construction and Material Journal Vol. 7 No. 2 Oktober 2025
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v7i2.7439

Abstract

The application of mortar is generally intended for non-structural work such as wall plastering, brick adhesive, mortar on river stone foundations, plastering for ceramic installation, brick, paving block, concrete pipes, rosters, and others. Mortar is widely used as a construction material because its ingredients are easily obtainable, and it is simple to work with. The quality of mortar is influenced by its constituent materials, the use of ingredients that meet the required specifications will result in good quality mortar. This study aims to determine the physical characteristics of fine aggregate and fly ash on K-50 mortar and the effect of adding fly ash on the compressive strength of K-50 mortar. The research methodology used is experimental, where experiments are conducted by manipulating or controlling natural conditions through the creation of artificial conditions. The test results of fine aggregate characteristics, including sieve analysis, density, specific gravity, water content, and quartz sand waste meet the specifications and suitable for use in mortar mixtures. The characteristics of fly ash obtained specific gravity of 2.436, loose content weight of 1.576 gr / cm3 and compacted content weight of 1.665 gr / cm³. The effect of adding fly ash on the compressive strength of K-50 mortar was examined for mixture ratios of 1Pcc: 3Psr, 1Pcc: 4Psr, 1Pcc: 5Psr, 1Pcc: 6Psr fly ash addition of 5% and 10%. The results show that the greater the amount of fly ash used, the higher the compressive strength of the mortar. The maximum compressive strength for 5% fly ash is 128.80 kg/cm², while for 10% fly ash it is 179.20 kg/cm², both achieved at the 1Pcc: 3Psr mixture ratio.
Co-Authors Andi A. Amiruddin Herman Parung Kadarinawati, Ana Rita Irmawaty Yatjong, Isramyano