الفهرس 
History of voided slab systemOnly 14 pages are availabe for public view
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Abstract
Usage of voided slabs (V.S) has been extensively spread out in roofing and flooring
systems around the globe due to benefits of mass production, fast site construction, low
construction costs and a lot of another benefits. This flooring system can be casted in place
and it can be precasted. A few research works focused on voided slab system, because this
system is still new to many construction market. This research work presents numerical and
experimental study conducted to investigate the effects of using high density polyethylene
(HDPE) balls inside cast in situ concrete slabs. Six full scale specimens of reinforced
concrete slabs will be cast in laboratory and classified into 2 groups. group (1) includes
three specimens, first of solid slab, second of voided slab, third of hollow block slab, and
all three specimens with full scale dimensions 1200 × 6600 × 220 mm (width × length ×
thickness) it will be compared together to show efficiency of voided slab against flexural
force. group (2) contains three specimens, first of solid slab, second of voided slab, third of
hollow block slab, and all three specimens with full scale dimensions 1200 × 4100 × 180
mm (width × length × thickness) it will be compared together and with hollow core
specimens investigate in previous research work to show efficiency of voided slab against
shear force. All test specimens were tested under static 4 point loading until failure.
Cracking patterns, failure modes, cracking and ultimate failure moment capacities, and
moment-deflection relationship have been illustrated, discussed, and analyzed in this study.
A finite element model was also developed using DIANA program to validate the
experimental tests. A comparison between experimental and finite element results was also
represented.