Structural Behavior of Lightweight Composite Slab System

Sutiman, Nur Adidah; Majid, Masni A.; Jaini, Zainorizuan Mohd; Roslan, Aina Syafawati

doi:10.30880/ijie.2021.13.03.007

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…The lightweight composite slabs were examined to obtain the failure mechanism under full load capacity. In another study by Sutiman et al [27], foamed concrete was used as the infill material for the lightweight composite slabs, which consist of Primaflex dry board and PEVA 50. It was found that foamed concrete has a minor impact on serviceability.…”

Section: Lightweight Composite Slabsmentioning

confidence: 99%

Application of Foamed Concrete and Cold-Formed Steel Decking as Lightweight Composite Slabs: Experimental Study On Structural Behaviour

Jaini¹,

Rum²,

Hakim³

et al. 2023

IJIE

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This paper presents an investigation of ultimate load, maximum deflection and failure mode of foamed concrete composite slabs (FCCS). Of interest are the effects of dry density and slab thickness. Unlike conventional composite slabs, FCCS has the advantage of eliminating the selfweight penalty and thus reducing the underlying structural members.With the advanced research in concrete technology, foamed concrete with sufficient strength propertiesto meet the requirements of standard code of practise has been successfully introduced. Foamed concrete isknown for its lightweight and versatility.In the experimental study, the slab specimens with a span of 1800 mm, a width of 840 mm and different slab thicknessesof100 mm to 150 mm were prepared for the three-point bending test. The dry density of foamed concrete is 1400 kg/m3, 1600 kg/m3, and 1800 kg/m3, which has a compressive strength of about 20 MPa to 40 MPa. Dry density and slab thickness have been observed to have significant effects on ultimate load and maximum deflection. Higher dry density of foamed concrete provides better slip resistance and thus reduces shear bond failure. On the other hand, slab specimens with a higher slab thickness tend to have better bearing capacity due to greater bending stiffness. The main failure mode is dominated by localised bending on the profiled steel deck, slip-displacement and fracture ofthe foamed concrete.

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Section: Lightweight Composite Slabsmentioning

confidence: 99%

Application of Foamed Concrete and Cold-Formed Steel Decking as Lightweight Composite Slabs: Experimental Study On Structural Behaviour

Jaini¹,

Rum²,

Hakim³

et al. 2023

IJIE

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“…Jaini et al [21] fabricated cemboardfoamed concrete panel using PRIMAflex. Similarly, Sutiman et al [22] used PRIMAflex to prepare specimens for the lightweight steel composite slab.…”

Section: Primaflexmentioning

confidence: 99%

Force and Slip Displacement of Fibre Cemboard Panels Subjected To Four-Point Bending Test

Mohammed¹,

Norhalim²,

Jaini³

et al. 2022

IJIE

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For many years, fibre cemboard has been widely used in the construction industry. This material has many advantages, including a long-life span, ease of installation and low maintenance, which can reduce the cost of maintenance. However, due to its limitation of being unable to support heavy loads, it is only suitable for the lightweight floor system. Therefore, the fibre cemboard panel is introduced. Basically, the fibre cemboard panel consists of several layers of fibre cemboard that stack together using a special bond mechanism. This study aims to investigate the flexural capacity and slip displacement of fibre cemboard panels with different bond mechanisms (polyurethane glue, steel bolts and polyurethane glue + steel bolts) and spacings (50 mm, 75 mm, 100 mm, 150 mm, and 200 mm). The specimens were fabricated with a size of 305 mm width, 1220 mm span and 2@16 thickness. The four-point bending test was carried out using Universal Testing Machine (UTM) that yield the force-slip displacement curves.The results of experimental testing indicate that the bond mechanism has an apparent impact on the flexural capacity and slip displacement. The fibre cemboard panels bonded by steel bolts have the best performance. Meanwhile, the spacing was found to control the slip displacement the most than the flexural capacity. Close distance of spacing may increase the stiffness that appreciably contributes to better performance. The optimum spacing for the polyurethane glue is 50 mm, while the specimens bonded by steel bolts and polyurethane glue + steel bolts should have 75 mm and100 mm spacings. The polyurethane glue can hold the stress concentration before the detachment. When polyurethane glue fails, the steel bolts resume the function to resist the slip displacement until the rapture.

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“…Even with these limitations, a higher volume of studies focusses on the development of steel-concrete infill systems [14], owing to the increase in compressive strength and increased panel stiffness delaying the buckling offered by these composite slabs [15]. Moreover, the profile sheeting provides support by acting as a formwork taking the selfweight of concrete under large spans, avoiding the need for temporary props [16,17]. However, some studies identify that using conventional concrete as an infill material would negatively affect the sustainability aspect of the modular construction concept due to the high amount of carbon emissions associated with the production of Ordinary Portland Cement [18].…”

Section: Introductionmentioning

confidence: 99%

Structural Performance of Modular Sandwich Composite Floor Slabs Containing Basalt FRP-Reinforced Self-Compacting Geopolymer Concrete

et al. 2022

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A newly developed innovative steel–geopolymer concrete composite floor slab for use in modular construction is investigated in this study. We present experimental results on the flexural behaviour of eight modular sandwich composite floor slabs with different configurations containing self-compacting geopolymer concrete (SCGC) as infill and Basalt FRP (BFRP) bars as reinforcement. The use of sustainable infill material such as SCGC and non-corrosive BFRP in the proposed composite floor slabs is beneficial from the perspective of environmental sustainability. This study also compares the performance of these composite floor slabs against their hollow counterparts. The overlap between the cells in multi-cell panels acts as additional partitioning walls. The infill material offers the sandwich composite floor slabs significant advantages by improving their load-carrying capacity. A critical analysis of the composite floor slabs for load displacement, failure modes, and strain behaviour is also conducted. The study concludes that the sandwich panels with multiple smaller cells and infill materials exhibit a sound structural performance, reporting a 6–8 times higher load-carrying capacity than their hollow counterparts. A comparison of hollow and infilled panels shows that the infill sandwich panels are suitable as structural slabs. At the same time, the former is more suitable for temporary formworks, shelter, and pedestrian platform applications.

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Structural Behavior of Lightweight Composite Slab System

Cited by 3 publications

References 10 publications

Application of Foamed Concrete and Cold-Formed Steel Decking as Lightweight Composite Slabs: Experimental Study On Structural Behaviour

Application of Foamed Concrete and Cold-Formed Steel Decking as Lightweight Composite Slabs: Experimental Study On Structural Behaviour

Force and Slip Displacement of Fibre Cemboard Panels Subjected To Four-Point Bending Test

Structural Performance of Modular Sandwich Composite Floor Slabs Containing Basalt FRP-Reinforced Self-Compacting Geopolymer Concrete

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