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The choice of aggregate type in producingreinforced concrete depends on the availability of the sourcesometimes and the intended concrete requirements likelightweight or normal aggregate concrete or high strengthconcrete. The punching shear resistance is being considered tobe influenced by numbers of parameters including aggregatesize and types. These parameters have not accounted in most ofcodes of design and have given a little attention by researchers.Most of the available knowledge is based on outcomes fromexperimental works on beams. In this paper, the considerableslab tests without shear reinforcement are collected fromliterature in which aggregate types and sizes are given and theywere failed in punching. The test results are compared to thosecalculated by ACI, EC2 and CSCT. The deficits of shearresistance are found clear where high compressive strength iscombined with reinforcement ratio.

Aggregate interlocking --- Aggregate size --- Aggregate type --- Crack width