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Advances in Materials Science and Engineering
Volume 2016, Article ID 5126436, 9 pages
http://dx.doi.org/10.1155/2016/5126436
Research Article

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

1College of Transport & Communications, Shanghai Maritime University, 1550 Haigang Avenue, Shanghai 201306, China
2Department of Civil and Environmental Engineering, Chung-Ang University, 84 Heukseok-Ro, Dongjak-Gu, Seoul 06974, Republic of Korea
3Department of Transportation Engineering, Myongji University, San 38-2 Nam-dong, Yongin-si, Gyeonggi-do 449-728, Republic of Korea

Received 28 December 2015; Revised 12 April 2016; Accepted 19 April 2016

Academic Editor: Peter Majewski

Copyright © 2016 Wuguang Lin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

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.