Composite Behavior of a Novel Insulated Concrete Sandwich Wall Panel Reinforced with GFRP Shear Grids:  Effects of Insulation Types

Kim, Jun Hee; You, Young Chan

doi:10.3390/ma8030899

Cited by 80 publications

(34 citation statements)

References 15 publications

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“…During the initial stage of the test, the CTR and HFC specimens remained plane and failed due to the initiation of shear cracking so that they followed the assumption made for the theoretical framework. Meanwhile, the JFC specimens did not follow this as the collapsed mechanism initiated was a debonding mechanism, such as reported in Reference [26], so that the cross section did not remain plane when bending took place. In short, it can be inferred that debonding mechanism is also an important aspect when further developing this new hybrid panel in the future.…”

Section: Comparison Of Load-deflection Behaviourmentioning

confidence: 99%

“…The early separation of the intermediate layer and the EPS core was resulted from the low bond strength of the two adjacent materials. Such failure mechanism was also reported previously for the sandwich structure with EPS and XPS foam core [26]. Furthermore, the theoretical concept of sandwich panel was developed based on the assumption that the cross-sections are plane and perpendicular to the longitudinal axis of the unloaded beam [2,46].…”

Section: Comparison Of Load-deflection Behaviourmentioning

confidence: 99%

“…Included in this category is the sandwich panel with irregular arrangement of fibrous core [3], the sandwich panel with Kagome lattice cores reinforced by carbon fibres [16], and also the sandwich panel with a honeycomb core [17][18][19][20][21]. In the third category, a few studies have also been carried out on introducing a new element to improve the properties of composite sandwich panel such as sandwich panel with additional sheets inserted within the core [25], and more recently, insulated concrete sandwich wall panel reinforced with glass fiber reinforced polymer as the shear connector [26]. Furthermore, sandwich panel with intermediate layers inserted between the face sheets and the core developed by Mamalis et al [27] provided a more practicable choice.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Flexural behaviour of hybrid sandwich panel with natural fiber composites as the intermediate layer

Fajrin¹,

Zhuge²,

Bullen³

et al. 2016

J. MECH. ENG. SCI.

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Polymeric composites reinforced with natural fibers have raised more attention as the alternative building materials. In this work, natural fiber composites prepared from jute and hemp fiber were proposed for the intermediate layer of a hybrid sandwich panel. This paper presented the flexural behavior of the newly developed hybrid sandwich panel which included the comparison of the ultimate load, load-deflection behavior, load-strain behavior and failure modes. The study was designed as a single factor experiment where the performance of hybrid sandwich panels containing jute fiber composite (JFC) and hemp fiber composite (HFC) as the intermediate layer was compared to the control (CTR) which was a conventional sandwich panel without an intermediate layer. A static flexural test under a four-point bending load scheme was performed in accordance with the ASTM C 393-00 standard. Aluminium sheet was used as the skins, while expanded polystyrene (EPS) was employed for the core. The testing was performed using a 100 kN servohydraulic machine with a loading rate of 5 mm/min. The applied load, displacement and strains were obtained using data logger. The results demonstrated that the hybrid sandwich panel exhibited a more superior performance than the conventional sandwich panels. The intermediate layer contributed significantly to enhancing the load carrying capacity of the hybrid sandwich panel. The load carrying capacity of hybrid panel with the JFC intermediate layer was 29.60% higher than the conventional sandwich panel, and correspondingly 93.46% higher for the sandwich panel with the HFC intermediate layer.The hybrid sandwich panels also developed a much larger area under the load-deflection curve, indicating greater toughness. The introduction of intermediate layer helped the hybrid sandwich panels to sustain a larger strain prior to reach their ultimate loads, resulting in a higher deformation capability. Indentation and core shear were observed as the failure mode of the conventional sandwich panel. Meanwhile, core shear and delamination were identified as the failure mode of the hybrid sandwich panel.

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Section: Comparison Of Load-deflection Behaviourmentioning

confidence: 99%

Section: Comparison Of Load-deflection Behaviourmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Flexural behaviour of hybrid sandwich panel with natural fiber composites as the intermediate layer

Fajrin¹,

Zhuge²,

Bullen³

et al. 2016

J. MECH. ENG. SCI.

View full text Add to dashboard Cite

show abstract

“…The early delamination process at the interface of the intermediate layers and the core may have resulted from the low bond strength of the two adjacent materials. Kim and You (2015) and Fajrin et al (2016) reported a similar failure mechanism for sandwich structures with EPS and XPS foam core.…”

Section: Comparison Of Load-deflection and Load-strain Behaviormentioning

confidence: 86%

The Structural Behavior of Hybrid Structural Insulated Panels under Pure Bending Load

Fajrin¹,

Zhuge²,

Bullen³

et al. 2017

IJTech

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This paper presents the structural behavior of newly-developed hybrid structural insulated panels (SIPs) formed by incorporating lignocellulosic composites-jute fiber composite (JFC) and medium-density fiber (MDF)-as intermediate layers between aluminum skin and an expanded polystyrene (EPS) core. The investigation was conducted as an experimental work. A four-point bending load was performed to create pure bending conditions, and the samples were prepared in accordance with ASTM C 393-00 standards. Testing was performed using a 100 kN servo-hydraulic machine with a loading rate of 5 mm/min. The results show that the incorporation of intermediate JFC or MDF layers enhanced the flexural behavior of the SIPs. The ultimate loads of hybrid SIPs with JFCs or MDF were, respectively, approximately 62.59% and 168.58% higher than the ultimate load achieved by SIPs without intermediate layers.Hybrid SIPs exhibited a much larger area under the load-deflection curve than those of conventional SIPs; this points to the toughness of the material and its ability to sustain larger compression strain prior to reaching their ultimate loads, which prevents them from prematurely failing under buckling or indentation.

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“…This work characterizes the effect of ceramic powder on the far-infrared emissivity of polymer composites. Three different types of cFIR composite films were fabricated using a sandwich structure process (shown in Figure 1) that can enhance breakdown strength [23]. The cFIR films also show significant potential as packaging materials, as they can improve the shelf life of fruits owing to their biological effects.…”

Section: Introductionmentioning

confidence: 99%

Properties and Applications of High Emissivity Composite Films Based on Far-Infrared Ceramic Powder

et al. 2017

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Polymer matrix composite materials that can emit radiation in the far-infrared region of the spectrum are receiving increasing attention due to their ability to significantly influence biological processes. This study reports on the far-infrared emissivity property of composite films based on far-infrared ceramic powder. X-ray fluorescence spectrometry, Fourier transform infrared spectroscopy, thermogravimetric analysis, and X-ray powder diffractometry were used to evaluate the physical properties of the ceramic powder. The ceramic powder was found to be rich in aluminum oxide, titanium oxide, and silicon oxide, which demonstrate high far-infrared emissivity. In addition, the micromorphology, mechanical performance, dynamic mechanical properties, and far-infrared emissivity of the composite were analyzed to evaluate their suitability for strawberry storage. The mechanical properties of the far-infrared radiation ceramic (cFIR) composite films were not significantly influenced (p ≥ 0.05) by the addition of the ceramic powder. However, the dynamic mechanical analysis (DMA) properties of the cFIR composite films, including a reduction in damping and shock absorption performance, were significant influenced by the addition of the ceramic powder. Moreover, the cFIR composite films showed high far-infrared emissivity, which has the capability of prolonging the storage life of strawberries. This research demonstrates that cFIR composite films are promising for future applications.

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Composite Behavior of a Novel Insulated Concrete Sandwich Wall Panel Reinforced with GFRP Shear Grids: Effects of Insulation Types

Cited by 80 publications

References 15 publications

Flexural behaviour of hybrid sandwich panel with natural fiber composites as the intermediate layer

Flexural behaviour of hybrid sandwich panel with natural fiber composites as the intermediate layer

The Structural Behavior of Hybrid Structural Insulated Panels under Pure Bending Load

Properties and Applications of High Emissivity Composite Films Based on Far-Infrared Ceramic Powder

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