| Title |
A Study on the Current Status and Improvement of Shape Specifications for Concrete Interlocking Blocks in Korea |
| DOI |
https://doi.org/10.5659/JAIK.2026.42.7.329 |
| Keywords |
Concrete Interlocking Block; Geometric Standard; Aspect Ratio; Side Area to Top Area Ratio; Interlocking Performance |
| Abstract |
Concrete interlocking block pavements rely on a mechanical interlocking mechanism to distribute traffic loads. Despite the increasing demand
for diverse block designs in South Korea, the current national standard (KS F 4419) lacks specific geometric constraints, leading to structural
failures and the misuse of large-format slabs. This study evaluates domestic and international standards (ASTM, EN, JIS, and GB) using key
geometric indicators: the Aspect Ratio (Ratio of Length to Thickness, L/T) and the Ratio of Side Area to Top Area (S/A). The analysis
reveals that international guidelines strictly limit the aspect ratio to ensure structural stability. Furthermore, this research identifies a critical
error in domestic administrative guidelines that misapply the "failure threshold" from Japanese manuals as a "success criterion." To ensure
pavement durability, this paper proposes two essential geometric thresholds for the Korean standard: an Aspect Ratio (L/T) ≤ 4.0 and a Side
Area to Top Area Ratio (S/A) ≥ 1.0. Implementing these standards will establish a clear technical identity for interlocking blocks and
prevent premature deterioration. |