EXPERIMENTAL AND NUMERICAL ANALYSIS ON THE LOCALIZED STRESS-STRAIN BEHAVIOR OF HOLLOW CONCRETE MASONRY WALLS
DOI:
https://doi.org/10.11113/aej.v16.25369Keywords:
Concrete hollow block; stress-strain, axial compression; numerical; experimentAbstract
This study examines the experimental and numerical analysis of the stress-strain behavior of full-scale hollow concrete block (HCB) masonry walls under axial compressive loading, considering the influence of different boundary conditions. Four wall panels were constructed using standardized HCB and bond beam blocks (BBB), with consistent dimensions and mortar compositions. Following a 28-day curing period, the panels were subjected to gradually increasing axial loads under four distinct boundary configurations: fixed–fixed, fixed–free, fixed–pinned, and pinned–pinned. The investigation aims to assess how these boundary conditions affect the structural performance and failure characteristics of HCB wall systems. Key parameters, including lateral deflection, axial displacement, and crack formation, were measured using LVDTs and a data logging system. Results indicate that boundary conditions significantly affect the deformation and failure behavior of the walls. The highest failure load (504 kN) was observed in the panel with fixed-fixed supports, while the lowest (342 kN) occurred in the fixed-free configuration. Cracking initiated in vertical mortar joints and progressed through bed joints and HCB units, with failure primarily governed by mortar degradation. The findings highlight the importance of support conditions in evaluating the structural performance of HCB walls and offer valuable data for improving design practices.
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