| dc.description.abstract | This study introduces a semi- fabricated system for the construction of floor
slabs. A prefabricated half precast slab is a manufacturing process, where consist two
layer of concrete. Bottom layer fabricate in the factory initially as a formwork, and top
layer cast in-situ during construction. The use of prefabricated half precast slabs is an
alternative solution to overcome many problems in construction sector such as
formwork problem, concrete waste, construction delay, finishing and others.
Prefabricate half precast slab also one of the part Industrialized Building Systems (IBS).
The use of fabricated building component gives economic implication to the contractor
in term of labour shortage, reducing time consuming and others. In this study, the uses
of Lightweight Aggregates Concrete (LWAC) as bottom layer by using Palm Oil
Clinker (POC) give two more advantages. The product of half precast slab will lighter
than normal concrete and also will reduce residue of the boiler waste at palm oil mill.
To investigate the bond strength and compressive strength in composite slabs, seven
slab specimens having different materials, cases and presence of shear connectors
between the two layers were cast and tested under flexural test accordance to BS 5950:
Part 4: 1994. Test results shown that the presences of bar reinforcement as interlocking
mechanism produce higher horizontal shear bond strength and compressive strength in
composite slabs. Meanwhile, the structural behaviour and the horizontal shear bond
strength of the LWAC slabs are nearly similar to the conventional concrete slabs, which
in turn will reduce the cost of the composite slab. Capacity of half solid slab using
LWAC can sustains 20 kN as temporary structure. | en_US |
