Density and Strength of Foamed Concrete: The Influence on Dynamic Characteristics of Lightweight Profiled Composite Slabs

Rum, R. H. M.; Norhalim, A. F.; Jaini, Zainorizuan Mohd; Ghafar, Nor Hayati Abd; Kozłowski, Marcin

doi:10.30880/ijie.2019.11.06.030

Cited by 3 publications

(3 citation statements)

References 16 publications

(23 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Vibration responses and energy dissipation are governed by the FC topping thickness on the composite slab [92]. The composite slab of FC has a damping ratio of approximately 3-5% [92,93], whereas the damping ratio for floor systems is typically 1-3% [94]. The lowest fundamental natural frequency of the FC composite slab satisfies the minimum requirement of the standard code of practice for the design of floors [95].…”

Section: Overview Of Composite Floor Systemsmentioning

confidence: 99%

Suitability of Foamed Concrete for the Composite Floor System in Mid-to-High-Rise Modular Buildings: Design, Structural, and Sustainability Perspectives

Rahardjo,

Navaratnam,

Zhang

et al. 2024

Sustainability

View full text Add to dashboard Cite

This study investigates the application of lightweight foamed concrete (FC) in modular building floor systems to address challenges in lifting and transportation within modular construction. Initially, a literature review identifies FC’s characteristics and optimum mix design, considering its sustainability and strength. The comprehensive review highlights that FC can be a lightweight alternative to replace traditional concrete in floor structures. Further, this study conducted the life cycle assessment and indicates that FC with coarse fly ash substitution is the optimum mix, which releases less greenhouse gas emission (i.e., 740.89 kg CO2-eq/1 m3) than other mixes. Subsequently, the study conducted design verification and parametric study of composite floor systems (i.e., cold-formed steel-FC, timber-FC, and steel deck-FC). The results show similar flexural and shear performance compared to normal-weight concrete despite its lower density (1600 kg/m3) compared to normal-weight concrete (2400 kg/m3). Further, the reduction of modulus of elasticity (43% of normal-weight concrete’s value) in FC increases deflection by 22–46% and 11–15% for steel-FC and timber-FC floor systems, respectively. Overall, the outcome shows that FC can be an efficient alternative for mid-to-high-rise modular building floor construction. Its lightweight nature can reduce the module’s weight, making modular construction more cost-effective.

show abstract

Section: Overview Of Composite Floor Systemsmentioning

confidence: 99%

Suitability of Foamed Concrete for the Composite Floor System in Mid-to-High-Rise Modular Buildings: Design, Structural, and Sustainability Perspectives

Rahardjo,

Navaratnam,

Zhang

et al. 2024

Sustainability

View full text Add to dashboard Cite

show abstract

“…Microspheres can be fabricated from different types of natural and synthetic materials or even inorganic materials. Cases of fabrication of microspheres from commercially available ceramics microspheres, glass microsphere, or polymers microsphere have been reported in literatures [2,[4][5][6]. Depending on the technique, solid or hollow microspheres are widely used in density and, therefore, are used for different or specific intended applications [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Failure Mechanism of Two-Phase Syntactic Foam Polymer Composites under Different Coating Conditions

Afolabi

Ariff

Mutalib³

2019

IJIE

View full text Add to dashboard Cite

In this study, the impact of coated hollow microsphere (HMs) on syntactic foams (SFs) failure analysis is performed. The HMs was made from polystyrene beads and were coated with CaCO3 and cementite powder to produce the SFs by Vacuum Assisted Mould Fill Technique (VAMFT). The morphological analysis was performed using Scanning Electron Microscope (SEM) and the compressive test conducted using INSTRON 5982 machine model. From the results, the HMs failure mechanism showed the cementite surface coating enhanced the shellrigidity by 65%. The physical and compressive properties of the SFs increased with increase in % vol. fraction of the HMs. The SFs compressive modulus, flexural strength and tensile strength for the CaCO3 and cementite specimen are 470,44, 36 MPa and 582,48,41 MPa, respectively. The energy absorption characteristic of the SFs was enhanced by 14% and 25% for the CaCO3 and cementite HMs surface coating, respectively. But the optimal concentration for the SFs was 20% vol. weight for both HMs coating.

show abstract

“…There is no available literature on accidental loads such as impact and seismic. Rum et al [13] investigated the vibration behaviour of lightweight composite slabs subjected to the hammer-impact test. Of interest are the effects of the density of foamed concrete.…”

mentioning

confidence: 99%

Natural Frequency of Lightweight Composite Slabs Based on Experimental Study and Numerical Modelling

Jaini,

Sugiura,

Abdul Kudus

et al. 2023

IJIE

View full text Add to dashboard Cite

Recently, lightweight composite slabs have become increasingly popular. Lightweight composite slabs are an innovation that provides a better and more convenient construction method for floor systems. Under dynamic loads, lightweight composite slabs may experience meagre inertia forces due to poor stiffness or low mass. Compared to conventional composite slabs, lightweight composite slabs are 40% lighter and more susceptible to structural resonance. Therefore, the vibration behaviour must be controlled to avoid discomfort issues. This study investigates the natural frequency of lightweight composite slabs through experimental study and numerical modelling. In the experimental study, lightweight composite slabs were prepared for the hammer-impact test. The slab thickness ranges from 100 mm to 200 mm. In numerical modelling, lightweight composite slabs were modelled in SAP2000 using a unique technique called the simplified equivalent plate model. The effective material properties were derived from the rule of mixtures and depend exclusively on elastic properties with strength characteristics. The results of the experimental study and numerical modelling agree positively. The natural frequency decreased with slab thickness, signifying that the natural frequency is dominated by mass rather than stiffness. Overall, the natural frequency of lightweight composite slabs is around 27.23Hz to 31.45Hz.

show abstract

Density and Strength of Foamed Concrete: The Influence on Dynamic Characteristics of Lightweight Profiled Composite Slabs

Cited by 3 publications

References 16 publications

Suitability of Foamed Concrete for the Composite Floor System in Mid-to-High-Rise Modular Buildings: Design, Structural, and Sustainability Perspectives

Suitability of Foamed Concrete for the Composite Floor System in Mid-to-High-Rise Modular Buildings: Design, Structural, and Sustainability Perspectives

Failure Mechanism of Two-Phase Syntactic Foam Polymer Composites under Different Coating Conditions

Natural Frequency of Lightweight Composite Slabs Based on Experimental Study and Numerical Modelling

Contact Info

Product

Resources

About