Effect of Aggregate Size on Punching Strength of Reinforced Concrete Slabs

Dickson Fong Wen Jing; Lau Teck Leong

doi:10.4028/www.scientific.net/AMM.835.450

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 835Effect of Aggregate Size on Punching Strength of...

Effect of Aggregate Size on Punching Strength of Reinforced Concrete Slabs

Abstract:

This paper reports test results of flat slab cast from micro-concrete and normal concrete subjected to concentric punching shear. Although the punching shear failure mechanism of micro-concrete slabs was very similar to that of normal-concrete slabs, the punching shear capacity is reduced to about 73% due to the reduction in transferred shear stresses across shear cracks by aggregate interlock. Therefore, a shear retention factor of 0.7 is suggested to be applied in estimating the punching shear strength of micro-concrete slabs.

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Periodical:

Applied Mechanics and Materials (Volume 835)

Pages:

450-454

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.835.450

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Online since:

May 2016

Authors:

Dickson Fong Wen Jing, Lau Teck Leong

Keywords:

Aggregate Size, Flat Slabs, Micro-Concrete, Punching Shear

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