Abstract
The design and use of Ultra-thin reinforce concrete pavements (UTRCP) are well known and are implemented successfully in residential streets and low volume roads in South Africa. Various authors and publications are available to assist engineers and contractors to successfully design and construct roads using this labor intensive construction technique. The current structural design of UTRCP is for low volume road applications with a total expected traffic of less than 1 million equivalent single 80kN axle loads. This paper deals with an analytical evaluation based on laboratory results and computer modeling to determine the stress condition under loading and to determine the design life of the UTRCP pavement system. The analysis showed that initial design guidelines for the design of UTRCP may have underestimated the required stiffness of the foundation for the pavements. These results are in agreement to visual observations of early failures at UTRCP constructed urban roads and streets. The use of mechanistic-empirical software is recommended for design of the pavements.
Published Version
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