Published: 2012-04-01

Investigation of the load bearing capacity of precast manhole covers to be embedded in road pavements

Danuta Bebłacz , Michał A. Glinicki , Maciej Sobczak , Jolanta Wołowicz

Abstract

Concrete manhole covers of underground cable networks, placed into pavements of roadways and footways, are often subjected to premature damage posing a threat to traffic safety. That is why the investigation was undertaken to increase the durability of precast concrete covers. New concrete mixtures for precast elements as well as the structure of elements (the type of a chassis, the number and arrangement of reinforcement bars) were designed. Experimental research into the load bearing capacity of concrete elements manufactured in multiple precast plants according to the assumed mix design was carried out. The impact of the type of cement, chemical admixtures and fibre reinforcement on the load capacity of precast concrete elements was assessed. The high effectiveness of fibre reinforcement enhancing the load bearing capacity of concrete covers was found.

Keywords:

concrete, concrete precast elements, fibreconcrete, load capacity, manhole covers

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Bebłacz, D., Glinicki, M. A., Sobczak, M., & Wołowicz, J. (2012). Investigation of the load bearing capacity of precast manhole covers to be embedded in road pavements. Roads and Bridges - Drogi I Mosty, 11(3), 183–194. Retrieved from https://www.rabdim.pl/index.php/rb/article/view/v11n3p183

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