Numerical Modeling and Optimization of the Geometric Properties Influencing the Deflection Behavior of Interlocking Concrete Block Pavement

Abstract

Interlocking Concrete Block Pavement (ICBP) is a pavement type consisting of a discrete wearing layer with a unique load transfer mechanism. The main objective of the present study was to understand the influence of geometric properties of Interlocking paver block (IPB) on the deflection behavior of ICBP. The geometric parameters considered in the study include the block laying pattern, laying angle, laying thickness, and laying shape. Plate load tests were used to evaluate the deflection of the ICBP, and numerical modeling was carried out using PLAXIS Software. The PLAXIS software was validated using experimental and case study deflection test results. The optimization and significance of the geometric parameters were analyzed using Design Expert software. The test result showed that less deflection was experienced for the ICBP when laid in a herringbone pattern, 90° angle, 80–100-mm thickness, and zigzag shape.