Punching Strength of Reactive Powder Reinforced Concrete Flat Slabs
This research is devoted to investigating experimentally the punching shear strength of reactive powder concrete slabs under monotonic loading. All slabs have the same flexural reinforcement and same dimensions (1000mm length,600mm width,50mm thickness). The experimental program includes cas...
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| Autores principales: | , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
Tikrit University
2021
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| Materias: | |
| Acceso en línea: | http://dx.doi.org/10.25130/tjes.28.3.03 https://doaj.org/article/ab5881070fe24966a252a88bab51f393 |
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| Sumario: | This research is devoted to investigating experimentally the punching
shear strength of reactive powder concrete slabs under monotonic
loading. All slabs have the same flexural reinforcement and same
dimensions (1000mm length,600mm width,50mm thickness). The
experimental program includes casting and testing of sixteen slabs tested
under monotonic loading. The major parameters adopted in the current
research include the shape of column (circle, square), column size (twocolumn sizes), number of columns (one, two), and the distance between
two columns (3d,5d,7d). Results showed that, the slabs with circular
column sections have slightly higher ultimate load than those with square
column sections. An increasing column area increases the load of
punching shear failure. It was found that the ultimate failure load for
slabs with two columns is greater than the slabs with one column. Related
to the effect of distance between the two columns for monotonic, it was
found that the slabs maximum load reaches the maximum value at
distance between the two columns equal to(7d) for a circular section with
a diameter of 85mm and 113mm and square section with dimensions of
(100*100)mm. While the maximum failure load reaches the maximum
value when the distance between two columns (d) for a square section
with the dimension of (75*75)mm. Related to the crack patterns, it was
noticed that for slabs with larger columns sections with the distance
between columns equal to 7d, the failure zone extended (in a large
direction) to the slab sides. |
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