The effect of bedding thickness on interlocking block pavement performance
SCIE
SCOPUS
Cited 0 time in
WEB OF SCIENCE
Cited 0 time in
Scopus
-
Title
- The effect of bedding thickness on interlocking block pavement performance
-
Author(s)
- Kim, Inhyun; Ryu, Jung-Hyun; Oh, Myoung Hak; Chung, Choong-Ki
- KIOST Author(s)
- Oh, Myoung Hak(오명학)
-
Alternative Author(s)
- 오명학
-
Publication Year
- 2024-12
-
Abstract
- An interlocking block pavement (IBP) comprises discrete blocks, joints, bedding sand, and base and subbase layers. The thickness of the bedding sand layer gives significant impact on IBP performance. However, previous laboratory model tests have often overlooked the geotechnical properties of paving materials and the deformation characteristics of the sublayers, leading to conflicting recommendations regarding appropriate thickness. This study performed laboratory tests on IBP models with varying bedding thicknesses (30, 50, and 80 mm), considering the geotechnical properties (relative density, shear strength, and stress–strain behaviour) of the paving materials. In addition, a novel two-dimensional (2D) model chamber with a transparent wall was designed for particle image velocimetry (PIV) analysis to assess the overall deformation of the sublayers. The test results demonstrated that a bedding thickness of 50 mm exhibited higher load-dispersion ability, allowing the blocks to settle and rotate appropriately and achieving a full interlocking effect. Consequently, the deflection in the sublayer was distributed over a wide area at shallow depths. However, a bedding thickness of 30 mm provided a better performance in terms of resistance to deflection, imposing a higher stress on the base layer.
-
ISSN
- 1029-8436
-
URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/45635
-
DOI
- 10.1080/10298436.2024.2328129
-
Bibliographic Citation
- International Journal of Pavement Engineering, v.25, no.1, 2024
-
Publisher
- E. & F.N. Spon
-
Keywords
- relative density; particle image velocimetry (PIV) analysis; Interlocking block pavements (IBPs); interlocking effect; bedding sand thickness; block thickness
-
Type
- Article
-
Language
- English
-
Document Type
- Article
- Files in This Item:
-
There are no files associated with this item.
Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.