Speakers - 2026

Title: Seismic behavior of energy saving self insulating masonry walls under in plane cyclic loading

Abstract

This study investigates the seismic performance of a novel energy-saving concrete self-insulating load-bearing block wall (ECSLBW) system under in-plane low-cycle lateral loading. Masonry walls are commonly subjected to lateral and gravity loads from wind or earthquakes; however, conventional concrete masonry units often lack the structural efficiency and thermal performance needed for modern seismic zones. To address this, a new block system with specially designed interlocking configurations was developed to enhance bonding strength and overall wall integrity. Three full-scale ECSLBW specimens were designed, constructed, and tested. A self-supporting structural system consisting of integrated column and ring beams was implemented to simulate realistic boundary conditions and to assess failure modes. The experimental program focused on key seismic performance indicators, including hysteresis behavior, stiffness degradation, ductility, and energy dissipation capacity. Results showed that the ECSLBW system meets the seismic shear requirements for rare earthquakes in regions classified with a seismic intensity of 8 degrees. The self-contained structural configuration significantly enhanced the lateral load resistance and energy absorption capacity of the walls. A method for calculating the seismic shear capacity of concrete column block masonry was proposed, along with practical recommendations for the application of this system in earthquake-resistant construction.