Finite element modelling approach to determine optimum dimensions for interlocking concrete blocks used for road paving
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Date
2019
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Publisher
Taylor & Francis
Abstract
Interlocking concrete block paving (ICBP) is one of the foremost construction methods used
in most of the developing countries due to its economic benefits. Although it has emerged
as a cost-effective paving material, it is yet being developing as a full-fledged construction
technique. The aim of this study was to develop a finite element modelling (FEM) approach to
determine optimum dimensions for concrete blocks and to evaluate the deflections and stresses
induced in pavements with the application of loads. A three-dimensional FEM was built using
the ANSYS FEM software to analyse pavements with different block shapes and laying patterns.
Uni 3 block in a herringbone bond pattern induced the lowest deflections and stresses,
and therefore the dimensions of Uni 3 block were considered as the optimum dimensions in
this analysis. Based on that, a new block shape which incorporated the same behaviour was
proposed. Angles 110° and 100° were recommended instead of 137° for the uni-style block
shape. Furthermore, the stress and deflection distributions observed in the pavement for a
change in the wheel wander indicated significant variations in the stresses when the wheel
wander was closer to the pavement edge.
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Citation
Gunatilake, D., & Mampearachchi, W. (2019). Finite element modelling approach to determine optimum dimensions for interlocking concrete blocks used for road paving. Road Materials and Pavement Design, 20(2), 280–296. https://doi.org/10.1080/14680629.2017.1385512