Work

High impact resistance with less material: a comparative study of Kagome truss and conventional rebar in concrete panels

Year: 2025

Type: article

Abstract: This study experimentally validated a three-dimensional Kagome truss as a highly efficient alternative to conventional rebar for enhancing the projectile impact resistance of concrete panels. In this experiment, three types of panels with identical dimensions were fabricated: conventional RC panel (CP-2), RC panel with increased rebar (CP-4), and Kagome truss reinforced concrete panel (CP-K). High-velocity projectile impact tests were conducted to analyze the failure patterns on the front and rear faces, penetration depth, mass loss ratio, and damaged area of each panel. The experimental results showed that the CP-K panel withstood a greater number of impacts before perforation compared to the CP-2 and CP-4 panels. Furthermore, the CP-K panel exhibited smaller front and rear failure zones, less penetration depth, and a lower mass loss ratio. Notably, despite using a lower weight of reinforcement than the CP-4 panel, the Kagome truss-reinforced CP-K panel demonstrated superior impact resistance, establishing its potential as a material-efficient alternative for protective structures.

Source: Developments in the Built Environment

DOI: 10.1016/j.dibe.2025.100741

Authors: Se-Eon Park, Eunyoung Hwang, Jeong-Il Choi, Bang Yeon Lee

Institution: Chonnam National University

Language: English

Topic: High-Velocity Impact and Material Behavior

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $3,230