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INDONESIA
Jurnal Teknik Sipil
Published by Universitas Tanjungpura
ISSN : 14123576     EISSN : 26218429     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Jurnal Teknik Sipil Universitas Tanjungpura merupakan publikasi ilmiah berkala yang diperuntukkan bagi peneliti yang hendak mempublikasikan hasil penelitiannya dalam bentuk studi literatur, peneltian, dan pengembangan teknologi sebagai bentuk penerapan metode, algoritma, maupun kerangka kerja. Melalui penulisan Jurnal Teknik Sipil yang terbit pada bulan Juni dan Desember setiap tahun. Redaksi Jurnal Teknik Sipil Universitas Tanjungpura mengundang para profesional dari dunia usaha, pendidikan dan peneliti untuk berpartisipasi mengembangkan profesi serta menyebarluaskan perkembangan ilmu dalam bidang Teknik Sipil termasuk geoteknik, transportasi, struktur, sumberdaya air dan lingkungan dengan penekanan khusus pada pengurangan resiko bencana termasuk pendekatan sosio-teknik untuk penanggulangan.
Arjuna Subject : -
Articles 588 Documents
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The Effects of Quartz Sand Variation as an Additive on Concrete Compressive Strength (No Air Added) Faisal, Faisal; Sutandar, Erwin; Supriyadi, Asep
Jurnal Teknik Sipil Vol 25, No 4 (2025): Jurnal Teknik Sipil: Vol 25, No. 4, November 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i4.92086

Abstract

Concrete is a composite material widely used in construction due to its high compressive strength. However, variations in constituent materials can influence its quality and durability. One approach to improving concrete performance is to add quartz sand (SiO₂) as an additive. This study aims to analyse the effect of varying quartz sand content (0%, 5%, and 10%) on the compressive strength of non-air-entrained concrete. The research employed an experimental laboratory approach, producing cylindrical specimens cured for 28 days and tested using a compression testing machine in accordance with SNI 1974:2011. The test results showed that concrete with a 5% quartz sand addition achieved the highest compressive strength of 26.483 MPa, followed by regular concrete (26.087 MPa) and concrete with a 10% quartz sand addition (23.824 MPa). The results indicate that a moderate addition of quartz sand effectively enhances the compressive strength and density of concrete, whereas excessive dosage tends to increase porosity and reduce strength. Overall, 5% quartz sand is recommended as the optimal proportion to improve the performance of conventional concrete.
Analysis of Barriers and Strategies to Enhance Community Participation in Utilizing Centralized Domestic Wastewater Treatment Systems in Jambi City, Indonesia Putra, Dicky Nurfandi; Fitriani, Heni; Hadinata, Febrian
Jurnal Teknik Sipil Vol 25, No 4 (2025): Jurnal Teknik Sipil: Vol 25, No. 4, November 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i4.100916

Abstract

The development of Centralized Wastewater Treatment Plants (WWTPs) in Indonesia often faces negative public responses, leading to low community willingness to connect to the system. Through the Metropolitan Sanitation Management Investment Project (MSMIP), the government has initiated construction of WWTPs in several regions, including Jambi City, to address domestic wastewater issues. This study applies a mixed-methods approach to assess existing sanitation conditions and identify key factors inhibiting public participation across technical, economic, cognitive, perceptual, and institutional dimensions, analyzed using the Relative Importance Index (RII). Results show that 68.9% of households discharge wastewater without prior treatment, and 3.9% release both toilet and non-toilet waste directly into rivers. The community’s Average Ability to Pay (ATP) is IDR 103,000/month, considerably higher than the tariff of IDR 22,500/month, indicating that affordability is not a primary constraint. Instead, the main inhibiting factors include concerns about damage to the building during household connection installation, perceived increases in monthly maintenance costs, and the absence of clear local regulations. Limited public knowledge, assumptions that wastewater management is a government responsibility, and negative perceptions during construction further reduce willingness to participate. The study recommends strengthening regulatory frameworks, ensuring maintenance cost coverage, providing subsidies for low-income households, and enhancing outreach through collaboration with local academic institutions and community self-help groups.
The Impact of Incorporating Varied Sand Powder on the Compressive Strength of Concrete (Including Air Addition) Sutandar, Erwin; Budi, Gatot Setya; Aryanto, Aryanto; Parabi, Ashraf Dhowian
Jurnal Teknik Sipil Vol 25, No 4 (2025): Jurnal Teknik Sipil: Vol 25, No. 4, November 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i4.92395

Abstract

Concrete is a primary construction material composed of a mixture of aggregates, cement, and water, where the proportion of each component significantly influences its physical and mechanical properties. A common issue in conventional concrete production is a reduction in strength due to uncontrolled porosity and poor air distribution. This study aims to evaluate the effect of sand powder substitution on concrete characteristics and to determine the optimal composition that enhances mechanical performance without compromising material efficiency. The experimental tests were conducted at the Materials and Construction Laboratory, Faculty of Civil Engineering, Universitas Tanjungpura, using a sand powder variation of 0%, 5%, and 10%. The tested parameters included unit weight, compressive strength, splitting tensile strength, flexural strength, and elastic modulus at curing ages of 3 to 28 days. The results showed that conventional concrete achieved the highest compressive strength of 34.802 MPa at 28 days, while the mixtures with 5% and 10% sand powder reached 26.26 MPa and 25.917 MPa, respectively. Although the substitution of sand powder reduced mechanical strength, its use has the potential to enhance construction sustainability by reducing the consumption of natural sand and utilising mineral waste as a replacement material.
Effect of Foam Agent & Bioball Addition on Physical and Mechanical Properties of Lightweight Concrete Tanjaya, Christy Andhika; Supriyadi, Asep; Sutandar, Erwin
Jurnal Teknik Sipil Vol 25, No 4 (2025): Jurnal Teknik Sipil: Vol 25, No. 4, November 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i4.92468

Abstract

The growing demand for lightweight building materials that maintain adequate structural integrity has prompted research endeavors into lightweight concrete. This concrete possesses a lower specific gravity compared to conventional concrete, rendering it particularly well-suited for applications in soft soil and peatland environments, such as those prevalent in West Kalimantan. A notable innovation in the development of lightweight concrete involves the incorporation of foam agents and bioballs as supplementary materials, aiming to reduce the overall weight of the mixture without significantly compromising its mechanical properties. This research aims to analyze the effect of the addition of foam agent and bioball on the physical and mechanical properties of lightweight concrete, focusing on volume weight, porosity, compressive strength, split tensile strength, and modulus of elasticity. The research methodology comprised laboratory experiments with variations in the percentage of foam agent and bio ball. Compressive strength, split tensile strength, and modulus of elasticity tests were conducted at 7, 14, and 28 days of concrete age. Additionally, specific gravity and porosity measurements were taken to analyze the impact of additional materials on the physical properties of lightweight concrete. The findings indicated that incorporating foam agent and bioballs in the concrete mixture led to a reduction in the weight content of lightweight concrete to ≤ 1850 kg/m ³ and an enhancement in porosity, without substantial compromise to the compressive strength within structural lightweight concrete standards.The optimal amalgamation of foam agent and bioballs yielded lightweight concrete with optimal characteristics in terms of mechanical strength and structural efficiency. Consequently, this renders it a suitable alternative solution for construction applications in areas with low soil bearing capacity, where structural weight reduction is a major factor in design planning.
Performance and Optimization of Normal Concrete with Binary Cementitious Blends of Bagasse Ash and Rice Husk Ash Lase, Firman Kornel; Herwani, Herwani; Mukti, Elsa Tri
Jurnal Teknik Sipil Vol 25, No 4 (2025): Jurnal Teknik Sipil: Vol 25, No. 4, November 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i4.93362

Abstract

This study evaluates the use of Bagasse Ash (BA) and Rice Husk Ash (RHA) as partial cement replacements in standard concrete. The experiment used cylindrical specimens with diameters of 10 cm and 15 cm, with cement replaced by BA and RHA at 0% (control), 2.5%+2.5%, 5%+5%, and 7.5%+7.5%. Tests on material properties and concrete performance—including slump, unit weight, compressive strength, and splitting tensile strength—were conducted in accordance with Indonesian National Standards (SNI). The results show that increasing BA and RHA content reduces slump values, from 90 mm in the control mixture to 75 mm at the highest substitution level, but all mixtures remained within the acceptable workability range of 75–100 mm and met the criteria for normal-weight concrete. The highest 28-day compressive strength, 32.900 MPa, was achieved with the 2.5% BA + 2.5% RHA mixture, slightly exceeding that of the control concrete. The greatest splitting tensile strength, 2.924 MPa, occurred at the 5% BA + 5% RHA level. Overall, the findings indicate that moderate substitution using BA and RHA can maintain satisfactory mechanical performance while offering a more sustainable alternative to conventional cement.
Seismic Performance of Reinforced Concrete Frames with Clay and Lightweight Brick Infill Walls Using Response Spectrum Analysis Rabbani, Nauval
Jurnal Teknik Sipil Vol 25, No 4 (2025): Jurnal Teknik Sipil: Vol 25, No. 4, November 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i4.101543

Abstract

Indonesia faces a high earthquake risk due to its location at the convergence of major tectonic plates, necessitating earthquake-resistant building design that accounts for both structural and non-structural components, including infill walls. This study evaluates the effect of infill wall materials—clay bricks and lightweight bricks—on the seismic response of a four-story reinforced concrete frame building located on soft soil in Pekalongan City. The analysis was performed using the response spectrum method in ETABS. Two structural models were developed by representing the infill walls as uniformly distributed dead loads on beams, with each load corresponding to the wall material. The results show that the use of lightweight bricks reduces lateral and vertical forces at the ground floor by approximately 9–11% and decreases the maximum inter-story drift by up to 7.6% compared to clay bricks. In addition, the lightweight brick model exhibits a shorter fundamental vibration period, indicating increased structural stiffness due to reduced mass. All models satisfy the mass-participation requirements specified in the Indonesian seismic code. These findings indicate that lightweight bricks provide a more efficient alternative for infill walls and improve the seismic performance of mid-rise buildings in earthquake-prone regions.
Pavement Damage Assessment on the Soekarno Hatta Km 1–5 Section in Balikpapan Through the PCI Method Asmaningrum, Tri Hardiyanti; Zamzani, Muhamad Imron; Isabella, Mayati; Friber, Friber; Achmad, Radja Nikra
Jurnal Teknik Sipil Vol 25, No 4 (2025): Jurnal Teknik Sipil: Vol 25, No. 4, November 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i4.101909

Abstract

Pavement conditions along corridors with high volumes of heavy vehicle traffic tend to deteriorate more rapidly than their design service life would allow. Soekarno Hatta Road, Km 1–4 in Balikpapan City, is a strategic roadway that accommodates intensive freight traffic and exhibits significant pavement surface distress. This study aims to evaluate pavement surface condition along this segment using the Pavement Condition Index (PCI) method to determine damage levels and maintenance requirements. The data used consist of primary field survey data, including the identification of distress types, severity levels, and distress density for each 100-meter sample unit. The analysis results indicate that the dominant distresses are edge cracking (17.61%), depressions (15.91%), and surface corrugation (15.34%), suggesting the presence of both structural and functional pavement problems. PCI values vary along the roadway: the Km 1 and Km 3 segments are classified as Fair (average PCI of 63), whereas the Km 2 and Km 4 segments are classified as Poor (average PCI of 48 and 43, respectively). The findings demonstrate that heavy traffic loading, base-layer conditions, and pavement aging significantly influence pavement degradation, underscoring the need for targeted, sustainable maintenance and rehabilitation measures.
Comparative Analysis of Rainfall-Runoff Model Calibration Using Limited Discharge Data in Landak Sub-Watersheds Teofano, Enrico; Soeryamassoeka, S. B.; Gunarto, Danang
Jurnal Teknik Sipil Vol 25, No 4 (2025): Jurnal Teknik Sipil: Vol 25, No. 4, November 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i4.94640

Abstract

The limited availability of long-term discharge data remains a significant challenge for rainfall–runoff modeling in Indonesian watersheds, including the Landak Sub-Watershed. This study aims to evaluate the performance of the Mock and Sacramento rainfall–runoff models in simulating river discharge in the Landak Sub-Watershed during the 2022–2023 period. The data used include rainfall, river discharge, and climatological parameters obtained from relevant institutions. The analysis was conducted through model calibration and validation, with model performance evaluated using the correlation coefficient (r) and the RMSE–Standard Deviation of Observations Ratio (RSR). The results show that the Mock model produced moderate correlation coefficients during both the calibration and validation stages (r = 0.64 and 0.65), but with high RSR values, indicating limited agreement with the observed discharge. The Sacramento model demonstrated better performance, with strong calibration (r = 0.73) and moderate validation (r = 0.66), although the RSR values remained high. Overall, both models can represent flow patterns but are not yet capable of accurately reproducing discharge magnitudes due to data limitations and high rainfall variability
Feasibility Analysis and Implementation Strategy of Multi-Lane Free Flow on the Kayuagung–Palembang–Betung Toll Road Winanti, Lisa Ayu; Fitriani, Heni; Agustien, Melawaty
Jurnal Teknik Sipil Vol 25, No 4 (2025): Jurnal Teknik Sipil: Vol 25, No. 4, November 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i4.101376

Abstract

Traffic congestion at toll gates, caused by long queues of vehicles, remains a significant operational challenge for toll road management in Indonesia. Although the electronic toll collection (E-Toll) system has reduced cash-based transactions, vehicle stops during card tapping continue to limit toll gate capacity during peak traffic. This condition underscores the need for a more efficient toll-collection system. This study aims to evaluate the technical and operational feasibility of implementing the Multi-Lane Free Flow (MLFF) system at the Keramasan–Kayuagung Toll Gate on the Trans-Sumatra Toll Road. Primary data were obtained through direct observation of service time and expert interviews, while secondary data included traffic volume, queue length, and traffic growth rates from relevant agencies. Technical analysis was conducted using queueing system models and time-series traffic forecasting. The results indicate an average service time of 8.381 seconds per vehicle, with an average queue length of 5–7 cars and a service utilization rate of 0.7635 under existing E-Toll operations. Traffic projections indicate that optimal technical conditions for MLFF implementation are expected to be achieved by 2043; however, accelerated implementation by 2034 is feasible through improvements in regulation, infrastructure readiness, and user awareness.
Development of IDF Curve for Pontianak City Based on BRIN Rainfall Data During the 2014–2022 Observation Period Hui, Sin; Soeryamassoeka, S. B.; Umar, Umar
Jurnal Teknik Sipil Vol 25, No 4 (2025): Jurnal Teknik Sipil: Vol 25, No. 4, November 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i4.94750

Abstract

This study aims to develop an Intensity–Duration–Frequency (IDF) curve for Pontianak City using short-duration rainfall data recorded at the BRIN automatic weather station from 2014 to 2022. The RAPS consistency test confirmed that the data were statistically valid and suitable for hydrological analysis. Frequency analysis was conducted using several probability distributions, including Normal, Gumbel Type I, Log Pearson Type III, and Log-Normal (2- and 3-parameter), with the Normal distribution selected as the best fit based on goodness-of-fit and chi-square tests. Rainfall intensities were then calculated using the Mononobe method, with a locally calibrated sensitivity parameter m = 0.846. The resulting intensity equations for return periods of 2, 5, 10, 20, 50, and 100 years follow the exponential form I = a⋅t−0.846, where I is the rainfall intensity (mm/hour), t is the duration (minutes), and a is a return period–specific coefficient. The IDF curves demonstrate an inverse relationship between intensity and duration, confirming expected tropical rainfall behavior. These results provide a reliable tool for urban drainage design and flood risk assessment in Pontianak City

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