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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, Building, Construction & Architecture
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.
Arjuna Subject : -
Articles 24 Documents
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Search results for , issue "vol. 12 no. 3 (2026): march" : 24 Documents clear
Development and Calibration of Empirical and Statistical Models for SPT-N Prediction in Fine Grained Soils Kampala , Apichit; Thirakultomorn , Tinn; Arngbunta, Anukun; Kaewhanam , Nopanom; Amornpinyo, Prach; Sirisriphet , Yongyuth; Bubpi, Attaphol
Civil Engineering Journal Vol. 12 No. 3 (2026): March
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2026-012-03-020

Abstract

This study aims to develop and calibrate predictive models for the Standard Penetration Test number (N-SPT) in cohesive soils with a Liquid Limit between 20% and 60%. The objectives were to evaluate and compare empirical estimations based on the Consistency Index (CI) against statistical models derived from Multiple Linear Regression (MLR). Methods involved the analysis of a comprehensive dataset containing 469 samples obtained from the Thailand-China High-Speed Railway project and established literature, utilizing soil index properties (Liquid Limit (LL), Plastic Limit (PL), and water content (wn)) alongside unit weight (γ) as independent variables. Findings demonstrate that the MLR model provides significantly higher predictive reliability with a coefficient of determination (R2) of 0.982, compared to the empirical method (R2 = 0.667). To enhance practical application, both models were calibrated using a 90% confidence level modification factor. Novelty/Improvement: This research identifies unit weight as a critical parameter that, when integrated with index properties, substantially improves the accuracy of N-SPT estimations. The resulting framework provides geotechnical engineers with a validated, high-precision tool for soil strength estimation, effectively accelerating soil investigation processes while maintaining high reliability in design parameters.
Synergistic Effects of Nano Titanium Dioxide and Nano Zinc Oxide on the Physical and Rheological Properties of Asphalt Binder Obaidi, Hadel; Mohammad, Hussein K.; Albayati, Amjad H.
Civil Engineering Journal Vol. 12 No. 3 (2026): March
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2026-012-03-013

Abstract

Enhancing asphalt binder performance against anticipated distresses is a critical focus in pavement engineering. This study investigates the synergistic influence of nano titanium dioxide (NT) and nano zinc oxide (NZ) on asphalt binder performance. Nine NT:NZ combinations (1:1 to 3:3) were prepared with 1–3% by binder weight, in addition to a reference binder (RB). The performance test program included; conventional tests (penetration, softening point, viscosity, and ductility), Dynamic Shear Rheometer (DSR) for performance grading, Multiple Stress Creep Recovery (MSCR) for rutting evaluation, and Linear Amplitude Sweep (LAS) for fatigue resistance. Furthermore, Statistical analysis (ANOVA) was performed to determine the significance of nanomaterial interactions, and a cost–performance evaluation assessed economic feasibility. The results revealed that the combined use of these types of NM increased binder stiffness and resistance to aging. Additionally, the high-temperature PG grade increased from 70°C to 76°C for all NM-modified asphalt binders, except for the combinations of 1% NT and 1% NZ, as well as the (1:2) binder. On the other hand, MSCR results showed a reduction of up to 32% in non-recoverable creep compliance (Jnr3.2), whereas the LAS test verified extended fatigue life at a 2.5% strain level for low dosages of the NM combination, i.e., (1:1). The 1:1 NT:NZ blend exhibited the highest cost–performance efficiency, providing a balanced improvement in rutting and fatigue resistance. Overall, the synergistic incorporation of NT and NZ significantly enhanced the binder performance, offering practical insights for selecting nanomaterials in sustainable pavement engineering.
Experimental Study of Cold-Formed Steel Bridge Girder in Various Shapes Under Static Loads Allami, Ali; Hussain, Haleem K.; Majeed, Fareed H.
Civil Engineering Journal Vol. 12 No. 3 (2026): March
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2026-012-03-021

Abstract

To facilitate accelerated bridge construction and reduce the cost of bridge design and construction, a cold-formed steel composite bridge girder has been suggested recently as an economical alternative. The new technology for the composite bridge girder includes a cold-formed steel plate and either a precast or cast-in-place reinforced concrete (RC) slab. Previous research on cold-formed steel concrete composite girders has introduced two new shapes for short-span bridge girders: a cold-formed steel tub girder and a folded plate girder system. No study has been conducted on the impact of shape on the static structural behavior of cold-formed composite girders for short-span bridges. This paper investigated the behavior of the cold-formed steel composite girders with different shapes in terms of ductility, stiffness, the ultimate failure load, crack resistance, and interfacial slip. Four shapes were carried out in this research: tub, open-box, and double C with and without lips. Six simply supported girder specimens were designed, fabricated, and subjected to static load tests. The results showed that the cold-formed steel double C lipped girder increased the ultimate load by 12.12% compared to the cold-formed steel tub girder. Additionally, the initial stiffness of the cold-formed steel double C girder increased by 21% compared to the cold-formed steel tub girder. The open-box shape specimen can effectively improve the cracking resistance of cold-formed steel composite girders compared to the cold-formed steel tub girders.
A Comparative Study on Cyclic Behavior of S-Shaped and U-Shaped Steel Plate Dampers Zhai, Zhipeng; Shu, Qi; Yao, Kaiying; Hu, Yao; Wang, Linfa
Civil Engineering Journal Vol. 12 No. 3 (2026): March
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2026-012-03-01

Abstract

The widely used U-shaped steel plate damper (USPD), featured by large deformation capacity and excellent energy dissipation efficiency, is incapable of achieving multi-level seismic control due to single-stage energy dissipation. To tackle this issue, a new S-shaped steel plate damper (SSPD) derived from USPD and sharing identical geometric dimensions is presented, which exploits a bending-tensile yield mechanism to form double-stage energy dissipation behavior. This paper carries out comprehensive numerical investigations with the aim of comparing the cyclic behavior of USPD and SSPD. Firstly, their configuration and working principle are elaborated, and an experimentally validated numerical modeling approach is proposed. Subsequently, numerical parametric analyses are conducted on models with various geometric dimensions. The performance of USPD and SSPD under cyclic loading is evaluated in terms of hysteresis characteristics, damage development, stiffness degradation, energy dissipation, and residual displacement, as well as their performances under low-cycle fatigue loading, which are analyzed. Finally, the calculation formulas for critical mechanical parameters of the dampers are recommended to facilitate the design in engineering practice. The results show that the ability of multi-level seismic control and superior cyclic performance support the application of SSPD in scenarios requiring the demand of multi-level seismic control and dual function of loading-bearing and energy-dissipating.

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