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INDONESIA
Civil Engineering Journal
Published by C.E.J Publishing Group
ISSN : 24763055     EISSN : 24763055     DOI : -
Core Subject : Engineering,
Civil Engineering Journal is a multidisciplinary, an open-access, internationally double-blind peer -reviewed journal concerned with all aspects of civil engineering, which include but are not necessarily restricted to: Building Materials and Structures, Coastal and Harbor Engineering, Constructions Technology, Constructions Management, Road and Bridge Engineering, Renovation of Buildings, Earthquake Engineering, Environmental Engineering, Geotechnical Engineering, Highway Engineering, Hydraulic and Hydraulic Structures, Structural Engineering, Surveying and Geo-Spatial Engineering, Transportation Engineering, Tunnel Engineering, Urban Engineering and Economy, Water Resources Engineering, Urban Drainage.
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Articles 20 Documents
Search results for , issue "Vol 10, No 11 (2024): November" : 20 Documents clear
Assessment of Mechanical Properties of Corroded Reinforcement in Chloride Environment Based on Corrosion Rate Monitoring Grandić, Davor; Grandić, Ivana Štimac; Šćulac, Paulo
Civil Engineering Journal Vol 10, No 11 (2024): November
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-11-02

Abstract

Existing models for the evaluation of mechanical properties of corroded reinforcement, defined as a function of the mean cross-sectional loss or mass loss of the reinforcement, are not suitable in the case of chloride-induced corrosion, which causes irregular corrosion attack with pronounced localized damage—pits, whose geometry and spacing have a major influence on the mechanical properties of the reinforcement. Models that consider the irregularity of damage due to chloride corrosion are efficient, but as with models based on cross-sectional or mass loss, it is necessary to extract corroded rebars from the reinforced-concrete structure, which is a destructive procedure that can only be performed to a limited extent on an in-service building. To fill the above gaps, a new method based on the non-destructive measurement of corrosion parameters is proposed. The corrosion depth determined from the monitoring correlates directly with the remaining mechanical properties of the reinforcement; therefore, it is not necessary to determine the remaining cross-sectional area and geometry of the pits. The proposed models are based on experimental research on reinforced-concrete beam specimens subjected simultaneously to sustained loading and accelerated chloride corrosion in an environmental chamber in order to induce corrosion similar to that on real structures. Doi: 10.28991/CEJ-2024-010-11-02 Full Text: PDF
Kinematic Seismic Isolation System with Magnetic Dampers Lapin, Vladimir; Kim, Boris; Shakhnovich, Alexandr; Shokbarov, Yeraly; Aldakhov, Yerken
Civil Engineering Journal Vol 10, No 11 (2024): November
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-11-018

Abstract

The aim of this study is to experimentally and theoretically investigate the behavior of a three-story fragment of a frame building constructed using the PGF-SIKF system—Prefabricated girderless frame with seismic-isolating kinematic foundations. Magnetic dampers are employed at the support level. The novelty of the research lies in the combination of a girderless frame with kinematic foundations and innovative magnetic dampers. The experimental research method involved loading the system with horizontal static force using a stationary winch, followed by the release of the load. Vibration measurements were recorded using a digital measurement system. The normative live load was simulated by applying additional static load. It was determined that the oscillation period varies between 1.8 and 2.1 seconds, depending on the amplitude of the impact. The dissipative characteristics of the seismic isolation system were obtained, with acceleration values during the testing phases ranging from 95 to 177 cm/s². The experimental results confirmed that the building fragment showed no visible damage. The logarithmic decrement of oscillations was found to range between 0.08 and 0.16. Theoretical studies involved calculations based on a sample of 14 real accelerograms, with parameters corresponding to the magnitudes of local earthquakes (M=6), the maximum magnitude expected in Shymkent. The main result is the reduction of seismic loads achieved by using kinematic foundations in the girderless frame system. It was established that, under 7-8 intensity seismic events, the average displacements at the foundation level will not exceed the experimental values. Doi: 10.28991/CEJ-2024-010-11-018 Full Text: PDF
Study of Reversible Nozzle Apparatuses Using Euler Methodology and CFD Technologies Sazonov, Yuri A.; Mokhov, Mikhail A.; Bondarenko, Anton V.; Voronova, Victoria V.; Tumanyan, Khoren A.; Konyushkov, Egor I.
Civil Engineering Journal Vol 10, No 11 (2024): November
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-11-013

Abstract

This research aims to study multiflow nozzle apparatuses designed to control the thrust vector within a full geometric sphere when the deflection angle of the thrust vector can vary in the range from +180 °to -180 °in any direction. The distribution of the working gas energy was considered as exemplified by a reversible nozzle apparatus with two outlet channels. It was shown that when using wedge-shaped diaphragms, the critical section area can be regulated while maintaining a constant pressure and flow rate of the working gas entering the inlet of the multiflow nozzle. In this case, the mass flow rate of the gas and jet thrust in each outlet channel change in direct proportion to the linear displacement of the diaphragm. Known conical diaphragms do not provide these results. To create promising control systems and train designers, it is proposed to use the Euler methodology and CFD technologies more widely based on the philosophy of technology. In the course of the numerical experiments, the options for the thrust cutoff (tailoff) were considered. A scientific basis has been prepared for solving problems with six degrees of freedom in three-dimensional space, considering Euler angles, when controlling the thrust vector within a full geometric sphere. Issues in flight trajectory planning (for example, for an unmanned aerial vehicle) are discussed with regard to new possibilities for extreme maneuvering. Two main areas for the development of scientific research are considered: energy-saving power generation and transportation systems (land, sea, and air). Doi: 10.28991/CEJ-2024-010-11-013 Full Text: PDF
Polyethylene Terephthalate Modified Asphalt Concrete with Blended Recycled Aggregates: Analysis and Assessment Suddeepong, Apichat; Akkharawongwhatthana, Kongsak; Horpibulsuk, Suksun; Buritatum, Apinun; Hoy, Menglim; Yaowarat, Teerasak; Pongsri, Nantipat; Chinkulkijniwat, Avirut; Arulrajah, Arul; Horpibulsuk, Jitwadee
Civil Engineering Journal Vol 10, No 11 (2024): November
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-11-08

Abstract

The research study attempts to ascertain the mechanical performance of asphalt concrete, using reclaimed asphalt concrete pavement (RAP) and recycled concrete aggregate (RCA) blends with polyethylene terephthalate (PET) as a modifier. The influence factors were evaluated, including RAP/RCA ratios and PET contents on static and cyclic performances. The static performance was assessed through the indirect tensile strength (ITS) tests, while the cyclic performance was assessed through the indirect tensile resilient modulus (ITMR), indirect tensile fatigue life (ITFL), and wheel tracking tests. Compared to asphalt concrete using natural aggregate (NA), the ITMR of RAP-RCA-PET asphalt concretes was higher when PET contents were between 0.2% and 0.6% for RAP/RCA = 80/20. The ITFL of RAP-RCA-PET asphalt concretes was found to be higher than that of NA asphalt concrete when PET contents ranged from 0.2% to 0.6% for RAP/RCA < 90/10. The ITFL was also higher when PET content was between 0.4% and 0.6% for RAP/RCA = 100/0. RAP-RCA-PET asphalt concretes exhibited lower rut depth than NA asphalt concrete with RAP/RCA = 90/10 and 60/40 at PET contents of 0.4% to 1.0% and with RAP/RCA = 80/20 at PET contents of 0.2% to 1.0%. The RAP/RCA = 80/20 and PET content = 0.6% were found to be the best ingredient in term of both fatigue cracking and rutting resistances. As per the systematic analysis, the fatigue distress models of RAP-RCA-PET asphalt concretes for various PET contents were developed in term of ITFL and tensile strain (????????) relationship and useful for mechanistic design. The results of this research will contribute to promoting RAP-RCA-PET asphalt concrete as a greener material in pavement construction. Doi: 10.28991/CEJ-2024-010-11-08 Full Text: PDF
A Formula for Predicting Primary Settlement of Tropical Highly Organic Soil and Peat in the Field Prativi, Ayu; Mochtar, Noor Endah; Mochtar, Indrasurya B.
Civil Engineering Journal Vol 10, No 11 (2024): November
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-11-03

Abstract

Highly organic soil and peat are problematic soils due to their low bearing capacity and high compressibility. In tropical regions, the presence of woody material in these soils often affects the stress-compression and time-compression curves in load-increment consolidation tests, leading to unusual shapes. Consequently, conventional inorganic soil theory and the Cα/Ccconcept are inadequate for analyzing their compression behavior. As an alternative, the Gibson and Lo model can be used to obtain compression parameters from single-load consolidation tests. However, this method introduces considerable discrepancies when predicting the primary settlement. To address this issue, this paper proposes a formula for predicting the primary settlement in highly organic soil and peat in the field, especially in tropical regions. Samples were collected from several locations in Indonesia. The formula was constructed from the stress-strain relationship during the primary compression stage, obtained from numerous single-load consolidation tests. Long-term field settlement is predicted by combining this empirical equation for primary settlement with the Gibson and Lo model for secondary settlement. The proposed formula was verified using field soil monitoring data, demonstrating reasonable accuracy in predicting the primary settlement of highly organic soil and peat. Doi: 10.28991/CEJ-2024-010-11-03 Full Text: PDF
Analyzing the Future Climate Change Impacts on Meteorological Parameters Using the LARS-WG Model Dheyaa, Mohammed A.; Al-Mukhtar, Mustafa M.; Shemal, Khalid
Civil Engineering Journal Vol 10, No 11 (2024): November
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-11-019

Abstract

This research aims to evaluate the impacts of climate changes and reveal the future trends on meteorological parameters, i.e., precipitation and temperature effects, in three major cities in Iraq, namely Baghdad, Wasit, and Maysan, which are located along the Tigris River basin. The LARS-WG8.0 model was employed, and five GCMs were used within CMIP6 under three different scenarios, i.e., SSP126, SSP245, and SSP585, for the period 2021-2100. The observed and simulated data were tested by the statistical criteria R, R2, NSE, and RMSE through the baseline period 2003-2022. In addition, using the K-S test for validation of the LARS-WG8.0 model resulted in accuracy and reliability. The future projections indicate that the average temperatures will increase until the end of the current century, with a difference of 1.86, 2.85, and 5.36°C. The fluctuations in precipitation occur throughout the winter, spring, and autumn months. The highest precipitation was recorded in December and January. Therefore, all GCMs give a unified indicator of future climate forecasts. Rising temperatures and fluctuations in precipitation negatively impacted water and food security. As a result, this will impact the water resources and agricultural sectors. This research contributes to exploring the future climate behavior of the study area. Doi: 10.28991/CEJ-2024-010-11-019 Full Text: PDF
Effects of Varied Soil Leveling Methods on Physical Properties: A Comparative Analysis Sabahy, Amr; EL-Sheshny, Abdel-Rahman A.; Elsamra, Essam A.; Eid, Mohamed M. M.; Essam, Mohamed
Civil Engineering Journal Vol 10, No 11 (2024): November
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-11-014

Abstract

The total cultivated land area in this context is 8,664,000 square meters, which constitutes about 4% of Egypt's territory. The cultivation relies on old land dams, lines, and furrow surface irrigation systems. A significant portion (76%) of the cultivated land is irrigated with high-density leveled soil instead of unlevelled soil. Leveled soil has very low clay and organic matter content. Land leveling is a preparation or modification process that provides a suitable surface for seeding production. It involves reducing high areas and raising low or deep spots to create a more even surface. Laser-controlled land leveling is a technique that helps create a more even surface by reducing high areas and raising low spots. This process aims to eliminate surface irregularities and create a level plane, which can significantly impact crop germination, uniformity, and, ultimately, the yield of field crops. Laser technology allows for precision in land leveling, ensuring a more consistent seed depth, better water distribution, and improved crop-growing conditions. By creating a more uniform surface, the potential for more consistent crop growth, better water retention, and improved distribution of nutrients is increased. The study's main objective appears to be to determine the most appropriate types of land leveling that can be implemented and to analyze how land leveling treatments affect the physical properties of the soil during different seasons. The data shows that the leaser treatment decreased soil porosity in both seasons, dropping values from 57.36% to 54.34% in the first season and from 55.47% to 51.32% in the second season. In contrast, the "rotary treatment" had the opposite effect, increasing soil porosity in both seasons. The values rose from 57.34% to 59.62% in the first season and from 57.74% to 59.25% in the second. Observing how these treatments had different impacts on the soil over time is intriguing. Doi: 10.28991/CEJ-2024-010-11-014 Full Text: PDF
Evaluation of an Outdoor Pilot Scale Hybrid Growth Algal-Bacterial System for Wastewater Bioremediation Hassan, Khalid; Khalifa, Abdelkawi; Hegazy, Mohamed; Helmy, Mohamed
Civil Engineering Journal Vol 10, No 11 (2024): November
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-11-09

Abstract

Synergistic cooperation and interaction between algae and bacteria had made it easy by using one single step only to efficiently eliminate the impurities found in wastewater. High pollution levels triggered by the disposal of untreated wastewater and the harsh social and economic conditions, together with high construction and operation costs of conventional wastewater treatment systems, made it vital to find simple, efficient, cost-effective treatment systems. In this research work, a hybrid microalgae-bacteria pilot outdoor system comprised of a series of Algaewheel® rotating algae contactors (RACs) that receive preliminary treated domestic wastewater at a hydraulic retention time (HRT) of 8 hours was monitored for a period of 5 months. An average dissolved oxygen (DO) value of 3.04 ± 1.02 mgL⁻¹ was obtained in the effluent-treated wastewater. While the average removal efficiencies recorded for the parameters monitored were 90.73% for BOD5, 89.10% for COD, 93.45% for TSS, 77.05% for NH3-N, and 70.40% for TN. All the effluent values for the parameters monitored were below the limits of both the local and international standards. The pilot system was found to be suitable and adaptable for small communities with low discharges of 5000 m³/day or less due to its low operation and maintenance requirements, as its electricity consumption is 80% less compared with the conventional wastewater treatment systems. Doi: 10.28991/CEJ-2024-010-11-09 Full Text: PDF
Enhancement of Expansive Soil Properties by Water Treatment Sludge Ash in Landfill Liners Al-Soudany, Kawther Y. H.; Fattah, Mohammed Y.; Rahil, Falah H.
Civil Engineering Journal Vol 10, No 11 (2024): November
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-11-04

Abstract

This study aims to enhance the suitability of expansive clayey soils for use as landfill liners by incorporating water treatment sludge ash (WTSA). Expansive soils, prone to swelling and desiccation cracking, compromise landfill liner integrity, increasing the risk of groundwater contamination. Local soils often do not meet the requirements for hydraulic conductivity and stability, prompting the use of additives like bentonite. However, bentonite-treated soils still face challenges in tropical regions due to moisture loss and cracking. This research investigates the effects of adding WTSA to bentonite-treated soils to mitigate swelling and shrinkage issues. Several geotechnical tests were conducted, including hydraulic conductivity, free swell percentage, swelling pressure, volumetric shrinkage, and desiccation cracking. Results show that WTSA significantly reduces hydraulic conductivity, free swell percentage, and swelling pressure, meeting the standard requirements for liners (hydraulic conductivity of at least 1×10-9m/s and volumetric shrinkage of at least 4%). Moreover, WTSA addition reduces desiccation cracking to acceptable levels, demonstrating its potential as an effective reinforcement material. This study introduces an innovative approach to using WTSA, a waste product, as a sustainable alternative to conventional liner materials, reducing environmental impact and enhancing landfill liner performance. Doi: 10.28991/CEJ-2024-010-11-04 Full Text: PDF
Green Construction and Local Wisdom Integration for Sustainability: A Systematic Literature Review Sri Kristinayanti, W.; Zaika, Yulvi; Padma Devia, Y.; Solimun, .; Agung Wibowo, M.
Civil Engineering Journal Vol 10, No 11 (2024): November
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-11-020

Abstract

The construction industry's environmental impact necessitates a sustainable shift to mitigate resource depletion, emissions, and biodiversity loss. Integrating local wisdom offers innovative, adaptive solutions grounded in deep environmental understanding, potentially transforming construction practices toward sustainability. This study aims to identify aspects, challenges, impacts, and strategies in green construction practices integrated with local wisdom. The PRISMA framework methodology was used to conduct a comprehensive systematic review with qualitative analysis using NVivo software. Nine aspects of green construction integrated with local wisdom were identified, with cultural heritage preservation the dominant aspect. Eleven challenges were uncovered, with balancing tradition and innovation as the main challenges. Seven impacts on the economy, society, and environment were identified, with construction cost efficiency, improvement of community quality of life, and promotion of a circular economy and sustainable waste management as the dominant impacts. Thirteen strategies were identified, with active engagement of local communities in the construction process as the main strategy. The novelty of this research is a comprehensive review of the integration of green construction with local wisdom, which can be used as a guide in sustainable construction practices responsive to local environmental and social conditions and promote economically, socially, and environmentally sustainable development. Doi: 10.28991/CEJ-2024-010-11-020 Full Text: PDF

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