Concrete paving blocks: an overview.
Abate, Michael K.
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There is a widespread perception in the U.S. that a concrete block pavement (CBP) is an untried pavement alternative. However, each year more of these pavements are being installed. The available literature concerning this type of pavement is limited in the U.S. as most research papers are published elsewhere. This report examines CBP's from several perspectives in order to provide an overview of this alternative pavement technology. First, the CBP system is described. The importance of using the proper bedding sand gradations is stressed and the phenomenon of lock-up, or interlock, is explained. The various design methods for CBP's are also presented. Here, the concept of equivalency factors is discussed. Next, the structural performance of several CBP projects varying from 1 to 10 years are reviewed. Finally, the range of,, CBP costs in the Puget Sound area are provided, and a review of those prices paid by WSDOT for asphaltic concrete and Portland cement concrete is made to determine cost competitiveness with a CBP. Concrete paving blocks, Pavement performance, Pavement design, Pavement costs
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