Advances in Materials Science and Engineering (Jan 2016)

Development of Deflection Prediction Model for Concrete Block Pavement Considering the Block Shapes and Construction Patterns

  • Wuguang Lin,
  • Yoon-ho Cho,
  • In Tai Kim

DOI
https://doi.org/10.1155/2016/5126436
Journal volume & issue
Vol. 2016

Abstract

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Concrete block pavement (CBP) is distinct from typical concrete or asphalt pavements. It is built by using individual blocks with unique construction patterns forming a discrete surface layer to bear traffic loadings. The surface structure of CBP varies depending on the block shapes and construction patterns, so it is hard to apply a general equivalent elastic modulus estimation method to define the surface structural strength. In this study, FEM analysis and dynamic loading test were carried out to develop a deflection prediction model for CBP considering the block shapes and construction patterns. Based on the analysis results, it was found that block shapes did not have much effect on load distribution, whereas construction patterns did. By applying the deflection prediction model to the rutting model for CBP proposed by Sun, the herringbone bond pattern showed the best performance comparing with stretcher bond or basket weave bond pattern. As the load repetition increased to 1.2 million, the rutting depth of CBP constructed by herringbone bond pattern was 2 mm smaller than those constructed by the other two patterns.