Date of Award
2-1-2025
Publication Type
Thesis
Degree Name
M.A.Sc.
Department
Civil and Environmental Engineering
Keywords
3D Construction Printing; Flexural and Shear Behaviors; Lintels
Supervisor
Sreekanta Das
Rights
info:eu-repo/semantics/embargoedAccess
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Abstract
3D construction printing (3DCP) presents numerous advantages for the construction industry. The primary benefits of 3DCP include enhanced architectural flexibility, reduced material consumption and waste, shortened construction times, and decreased dependence on labor work. The absence of established structural codes and standards poses a significant challenge for the implementation of 3DCP technology in the construction industry. Furthermore, additional research is needed to evaluate the structural performance of 3D-printed elements, particularly 3D-printed lintels reinforced with traditional reinforcement. While several studies have explored the mechanical performance of small-scale 3D-printed materials, only a few have assessed the structural performance of 3D-printed components such as walls and beams. None of the past studies investigated the flexural and shear performances of 3D printed reinforced lintels. In this study, the flexural and shear performance of the 3D printed lintels reinforced with longitudinal and shear reinforcement is assessed using the experimental tests. The results of this experimental study indicated that factored flexural capacities calculated using concrete design standards (CSA A23, 2024; ACI 318-19, 2022) were closer to the experimental flexural capacities than those derived from the masonry design standard (CSA S304-14, R2019). The shear test findings revealed that CSA A23 (2024) provided the most accurate estimates of both factored and unfactored shear capacities for the lintel compared to ACI 318-19 (2022) and CSA S304-14 (R2019). The presence of stirrups in the flexural specimens increased ductility by 7.3%. Additionally, the service loads for both flexural specimens corresponded to approximately 60% of their ultimate load. The outcomes of this research will also help develop urgently needed new building codes for 3D printed structures.
Recommended Citation
Haddadi, Ali, "Flexural and Shear Behaviors of 3D-Printed Lintels" (2025). Electronic Theses and Dissertations. 9642.
https://scholar.uwindsor.ca/etd/9642