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Title: Bearing Strength of Hollowcore Concrete

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Publication: CIA

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Date: 2/13/2011

Abstract:
There is a limited amount of literature regarding the bearing strength and detailing requirements for hollowcore planks in Australia, with most of the literature being provided by the National Precast Concrete Association of Australia (NPCAA). The majority of all other research undertaken in this area is from Europe and New Zealand where the necessary information is documented in their design codes. This report outlines the performance in bearing of five hollowcore planks supplied by Delta Corporation. Some of these planks were cut longitudinally along their cores to create smaller width specimens. The results documented in this report were provided by loading the plank specimens in a simply supported arrangement until failure, and by varying the bearing length of one support only for each experimental test. The failure of the specimens supported on a short length of bearing was a combination of bearing and shear, while most of the other specimens provided with a larger bearing area predominantly failed due to web-shear cracking.