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All Journal Jurnal Teknologi Berkelanjutan METAL : Jurnal Sistem Mekanik dan Termal
Dwianto, Dwianto
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Sessile Drop Method Prediction of Particleboard Mechanical Properties Pinem, Mekro Permana; Adiwinoto, Aldiansyah Rudy; Yusuf, Yusvardi; Satria, Dhimas; Dwianto, Dwianto; Sunardi, Sunardi; Hendra, Hendra; Kanani, Nufus; Demustila, Harly; Triwibowo, Dimas
METAL: Jurnal Sistem Mekanik dan Termal Vol. 8 No. 1 (2024): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.8.1.6-13.2024

Abstract

Agriculture waste-based materials have considerable potential as wood-based particleboard alternatives. It has been produced abundantly from nature and considers an eco-friendly material. One of the enormous resources is the paddy by-product, rice straw (about 500 million tonnes per year worldwide). In this work, the mechanical properties of rice straw-based particleboard are predicted easily and quickly using the sessile drop method.  Rice straw was crushed into 2-5 mm diameter powder-like materials, and corn starch was used as the binder. The rice straw particleboard was formed under a hot press machine (5 MPa, 180°C and 120 minutes). Conventionally, the sample mechanical property was tested through Universal Testing Machine (UTM). Unfortunately, the process is costly and difficult to access. It is necessary to have a rapid and low-cost presumption of the mechanical particleboard properties toward more efficient manufacturing. This work proposes a simple sessile drop method to indicate particleboard mechanical properties. Multiple linear regression was performed to see the correlation between sessile drop and UTM testing. It was found statistically that the sessile drop method could be used as an early prediction of particleboard mechanical properties.
Cost-Effectiveness Ratio (Cer) Pembangunan Bangunan Perlindungan Lereng Utama, Komang Arya; Dwianto, Dwianto; Damayanti, Reny Khairina
Jurnal Teknologi Berkelanjutan Vol 14 No 02 (2025): Vol 14 No. 02
Publisher : Lambung Mangkurat University Press

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Abstract

The construction of slope protection is an essential measure for maintaining soil stability and infrastructure integrity in landslide-prone areas. However, cost efficiency often becomes a point of contention due to variations in construction treatment types, geotechnical conditions, execution methods, and material selection. This study aims to analyze the cost-effectiveness of various slope reinforcement alternatives using the Cost-Effectiveness Ratio (CER) approach. The analysis was conducted on three critical slope locations along the national road sections of Gorontalo Province: Sta. 32+140, Sta. 34+340, and Sta. 5+540. Numerical simulations using Plaxis 8.2 software were employed to calculate the Safety Factor (SF) under both static and dynamic conditions. The results indicate that the implementation of slope protection measures increased the SF values by 30–73% (static) and 3–24% (dynamic). CER values demonstrated efficiency variations ranging from 3.7% to 54.68%, with the combination of retaining walls and bored piles yielding the highest cost-effectiveness. This study emphasizes the importance of design selection based on cost-effectiveness analysis in planning landslide mitigation for national roads to achieve effective and efficient designs.
Co-Authors Adiwinoto, Aldiansyah Rudy Damayanti, Reny Khairina Dhimas Satria Harly Demustila Hendra Hendra Komang Arya Utama Mekro Permana Pinem, Mekro Permana Nufus Kanani, Nufus Sunardi Sunardi Triwibowo, Dimas Yusvardi Yusuf