Forthcoming and Online First Articles

International Journal of Structural Engineering

International Journal of Structural Engineering (IJStructE)

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International Journal of Structural Engineering (5 papers in press)

Regular Issues

  • Study of the influence of water saturation on main mechanical properties of laterite dimension stones from Burkina Faso   Order a copy of this article
    by Hassane Seini Moussa, Abdou Lawane, Decroly Djoubissié Denouwé 
    Abstract: This scientific paper presents the findings of a study on the hydromechanical behaviour of laterite stones (LS) from four quarries in Burkina Faso. The study examines the impact of water saturation on the compressive strength, tensile strength, Young modulus, and Poisson's ratio of the stones. The results indicate that water saturation significantly reduces the mechanical characteristics of the stones, with up to a 71% decrease in compressive strength and a 61% decrease in Young modulus. The study also highlights the influence of pore size and distribution on strength loss and identifies correlations between physical and mechanical properties under dry and saturated conditions. Furthermore, it reveals that the behaviour of LS varies depending on block size, with large blocks exhibiting brittle behaviour and smaller blocks showing ductile behaviour. The study also discusses the influence of the hydric state on the behaviour change of the stones. Additionally, it identifies novel correlation functions between mechanical and physical properties under dry and saturated conditions, which can provide an alternative to costly laboratory experiments. The study offers valuable insights into the mechanical behaviour of stones under different hydric states and provides practical implications for selecting and using stone materials in various environments.
    Keywords: influence of water; mechanical properties; laterite stone; Burkina Faso.
    DOI: 10.1504/IJSTRUCTE.2025.10069072
     
  • Theoretical and experimental analysis on impact resistance of metal rubber vibration isolator   Order a copy of this article
    by Yongsheng Zhang, Qingshun Bai, Yangyang Sun, Maiyong Zhou, Weidong Wu, Dan Zhang 
    Abstract: Metal rubber is recognised as an innovative high-efficiency damping material with excellent damping characteristics and energy dissipation capabilities, enabling effective vibration control. In this study, the focus is on the static characteristics and vibration damping performance of metal rubber vibration isolators under impact loads. Quasi-static test results demonstrate significant hysteresis and nonlinear stiffness properties in metal rubber, with its performance significantly influenced by relative density and wire diameter. The vibration isolating performance of metal rubber vibration isolators can be effectively evaluated using the impact isolation coefficient and logarithmic decrement rate. Impact tests reveal that metal rubber vibration isolators with varying relative densities and wire diameters exhibit distinct energy dissipation behaviours. Metal rubber samples with minimum wire diameter and maximum relative density demonstrate excellent vibration isolation performance at a pre-compression of 2 mm. This provides a new damping solution for applications in heavy machinery impact scenarios.
    Keywords: metal rubber; MR; quasi-static test; impact isolation coefficients; logarithmic decrement rate.
    DOI: 10.1504/IJSTRUCTE.2025.10069075
     
  • Study of torsion and combined shear stresses in the central core of tall twisting buildings   Order a copy of this article
    by Tooba Arshad, Syed Majid Hashmi, Mohd. Nazim Raza, Abdullah Shariff 
    Abstract: Twisted building features gradually rotating floors throughout its height and serves as a picturesque addition to a city's skyline. However, it is important to acknowledge the risks associated with its structural performance due to the torsion induced in these structures as a consequence of its twisting nature. There is also an increase in shear stresses in structural elements, especially in the vertical members. Elevated shear stresses can lead to shear failures, which are critical for the overall integrity of the building. Thus, this research aims to study the torsion generated in a twisted building due to gravity and lateral loads using CSI ETABS 20. The study was conducted on several models that varied in terms of angle of twist and height of the building. Additionally, a manual calculation of torsion developed in the core of twisted building is also worked out to verify the results obtained from the software. When comparing straight building models to twisted building models, it was evident that the latter experienced notably increased torsion when exposed to gravity and seismic loads, however, twisted buildings demonstrated superior performance against wind loads, attributed to their aerodynamic helical shape.
    Keywords: twisting building; circular core wall; torsion; shear stress; gravity load; wind load; seismic load; base shear; storey displacement.
    DOI: 10.1504/IJSTRUCTE.2025.10069069
     
  • Multi-criteria analysis of impact strength in concrete with PET bottle waste additives   Order a copy of this article
    by Sudhir Bhaskarrao Gayake, Shubham V. Jadhav, Saiprasad G. Gaikwad, Rushikesh S. Kasar, Pravin R. Parhe, Atul K. Desai 
    Abstract: This study investigated the impact strength properties of M25 grade concrete at both the initial and ultimate cracking stages after incorporating waste polyethylene terephthalate (PET) bottles as an additive. Various concrete mixes with PET waste components, such as fibres, caps, cap rings, and labels, were tested at different percentages (1%, 2%, and 3% by volume of cement). To identify the optimal mixture for impact strength and explore alternative options, the analytical hierarchy process (AHP), a multi-criteria decision-making tool, was employed. The results demonstrated significant improvements in impact strength with the inclusion of PET fibres and cap rings, while PET caps and labels contributed only marginally to the enhancement. The optimal mixture was achieved with a 2% addition of PET fibres (3 mm × 60 mm), as larger fibres led to matrix debonding. The AHP tool effectively identified the best mix, consistent with the experimental findings. This study highlights the potential of using PET waste in concrete to promote sustainable production while maintaining structural integrity.
    Keywords: impact strength properties; drop hammer test; PET waste; decision making; MCDM; AHP.
    DOI: 10.1504/IJSTRUCTE.2025.10069071
     
  • Composition and performance of chopped carbon fibre-reinforced self-consolidating concrete: a review   Order a copy of this article
    by Ahmed Abdullah Alawi Al-Naghi 
    Abstract: Incorporating chopped carbon fibres (CCFs) into self-consolidating concrete (SCC) has recently become of interest to researchers due to their potential to enhance the mechanical properties and durability of this concrete. This review is intended to offer a clear vision of the possibility of integrating CCFs into SCC with different proportions and ingredients. Therefore, a comprehensive examination of the composition and performance of carbon fibre-reinforced self-consolidating concrete (CCFRSCC) was conducted, drawing from referenced studies. This paper first outlines the formulation of this concrete in terms of the materials, mix proportions, and mixing procedures employed. Then, it presents, analyses, and discusses this concrete's related fresh, mechanical, electrical, and durability properties compared to conventional SCC. Consequently, outcomes and recommendations derived from discussions made in this article can serve as a valuable scientific reference for future applied research, aimed at improving the performance of CCFRSCC while mitigating any adverse impacts associated with CCF usage.
    Keywords: self-consolidating concrete; SCC; chopped carbon fibre; CCF; chopped carbon fibre-reinforced self-consolidating concrete; workability; mechanical properties; durability.
    DOI: 10.1504/IJSTRUCTE.2025.10069070