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Analytical Studies on the Compressive Properties of Mortise-Tenon Interlocking Grouted Masonry
Shugang Yu1, Zhongmin Han2, Kaiwei Liu1
1School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China.
Materials (Basel, Switzerland)
|February 13, 2026
Summary
This study introduces a novel mortise-and-tenon grouted masonry (MTGM) structure. Steel fiber-reinforced concrete (SFRC) enhances MTGM ductility, improving its performance under compression and providing new design tools.
Area of Science:
- Civil Engineering
- Materials Science
- Structural Engineering
Background:
- Traditional masonry structures have limitations in mechanical performance and engineering applicability.
- There is a need for advanced masonry systems with improved strength, ductility, and design methodologies.
Purpose of the Study:
- To propose and investigate a novel mortise-and-tenon grouted masonry (MTGM) structure.
- To systematically analyze the axial and eccentric compressive behavior of MTGM.
- To develop reliable theoretical and practical design tools for MTGM.
Main Methods:
- Experimental testing and numerical simulations using a refined 3D finite element model (DIANA).
- Parametric analysis of 52 numerical models to study various influencing factors.
- Theoretical analysis to derive calculation formulae and establish constitutive relationships.
Main Results:
- Steel fiber-reinforced concrete (SFRC) as core filling significantly enhances MTGM ductility and toughness (1.6% SFRC increased ultimate strain by 37%).
- Increased eccentricity (0.1 to 0.3) reduced load-bearing capacity by an average of 40%.
- Developed accurate stress-strain constitutive relationship (R² = 0.992) and a practical design method for eccentric compression.
Conclusions:
- MTGM structure offers enhanced mechanical performance and engineering applicability.
- SFRC is a highly effective core material for improving MTGM ductility.
- The study provides validated theoretical and computational tools for MTGM structural design.
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