Experimental investigations of sandwich panels using high performance concrete thin plates exposed to fire

Hulin, Thomas; Hodicky, Kamil; Schmidt, Jacob Wittrup; Stang, Henrik

doi:10.1617/s11527-015-0760-x

Cited by 13 publications

(10 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Very importantly, the authors observed that the insulation stability was maintained only for non-load bearing walls and not for load-bearing walls. Hulin et al [23] found that loss of bonding action occurred at the interface due to differential thermal expansion. Huang et al [24] found that the axial load capacity decreased by 88.5 % after exposure to one-side fire exposure for 4-hour.…”

Section: Truss Shear Section X-xmentioning

confidence: 99%

Behaviour of Innovative Concrete Sandwich Panels with Pervious Concrete Core under Flexural Bending

CHRISTADOSS¹,

PAZHANI

2023

View full text Add to dashboard Cite

Research studies investigating the possibility of using new core material (other than polystyrene) in concrete sandwich panels are being reported in the literature. In this paper, lightweight pervious concrete core is proposed as a new alternative. In this paper, the flexural behaviour of concrete sandwich panels with pervious concrete core is investigated under three-point and four-point bending conditions. The geometrical variables considered are core thickness and number of shear connector lines. Test results showed that, sandwich panels without shear connector trusses failed due to separation of wythes, and the panels with shear connector trusses achieved composite action. The variables considered were found to influence the initial stiffness, cracking moment, ultimate moment, load-deflection behaviour and load-strain behaviour of the panels. Analytical study indicated that the equation given in ACI 318 underestimated the strength of the tested panels. The equation have to be modified by explicitly including the shear connector details in the equation for predicting the flexural strength with reasonable accuracy. Further experimental and analytical studies on prototype concrete sandwich panels with pervious concrete core produced using lightweight aggregates are required in view of developing design guidelines for practical applications.

show abstract

Section: Truss Shear Section X-xmentioning

confidence: 99%

Behaviour of Innovative Concrete Sandwich Panels with Pervious Concrete Core under Flexural Bending

CHRISTADOSS¹,

PAZHANI

2023

View full text Add to dashboard Cite

show abstract

“…İnce bir film ile ortotrop kaplama ara yüzeyi üzerindeki çatlak, düzgün ısı akışı altında analiz edilmiştir [9]. Yüksek performanslı beton kullanılarak üretilmiş ince plaklar ile imal edilen yangına maruz sandviç paneller, deneysel yöntemle çalışılmıştır [10]. Kırılma mekaniğinin ve termoelastisitenin farklı problemleri teknik literatürde geniş bir biçimde ele alınmaktadır.…”

Section: Gi̇ri̇ş (Inroduction)unclassified

“…Burada seçilen kusur türü literatürde tanımlanmış ve gerçek yapıda ortaya çıktığı tespit edilen kusur türlerinden biri olarak seçilmiştir. 10.17341/gazimmfd.460504 Anahtar Kelimeler: Kompozit levhalar, termal gerilme analizi, gerilme yığılma faktörü, sonlu eleman analizi, Nükleer reaktörler…”

unclassified

Reaktör Gövdesinde Kullanılan Kompozit Levhalardaki Kusurlar Civarında Termal Gerilme Analizi

Bulut

2018

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

View full text Add to dashboard Cite

Modelling of composite plate using in the reactor body in nuclear energy plants for thermal effect  The analysis of the stress concentration factor at the crack tip which is perpendicular to the interface of two different materials for various geometries and positions  Modelling by using finite element method which was verified analyticallyThe finite element model of the nuclear wall near the cavity perpendicular to the interface, verification of numerical results with analytical solution, variation of the stress concentration factor with respect to the radius of the tip of the cavityPurpose: In this study, the variation of the thermal stress concentration factor was intended to be determined with respect to the radius and the location of the tip of a cavity, which is perpendicular to the interface of two materials having different coefficients of thermal expansion. Theory and Methods:The dimensions of the region including a small cavity is small with respect to those of the reactor composite body so that this region can be modeled by a plate. The difference between the coefficients of thermal expansion was modeled by different temperature on two regions of a single material plate. The numerical model, which was analyzed by Abaqus, was verified by an analytical solution given in the literature. Various geometries of the numerical model were analyzed varying the radius and the location of the tip of the cavity. Results:The variations of the stress concentration factor were obtained with respect to the variations of the radius and location of the tip of the cavity, separately. Furthermore, second degree parabolas were fitted to the results in order to obtain the stress concentration factor when the radius or the distance of the tip to the interface equal to zero. Conclusion:The analogical approach was applied successfully to the numerical model considered here. The verification of the numerical model for the analysis of thermal stress was presented, which can be used to obtain an empirical expression for calculation of the thermal stress concentration factor comparing with some of the experiments in future.

show abstract

“…The authors conclude that for wellbalanced composite action, it is necessary to use the least amount of material in the plate connectors and an increased amount of bending capacity of the outer panel to avoid a significant drop in the load after the peak load. At the same line, Hulin et al [6] presents an experimental campaign at elevated temperatures for panels stiffened by structural ribs, insulation layers, and steel shear connectors. The results highlighted insulation shear failure from differential thermal expansion at the interface with concrete, where the shear connectors induced stress concentrations, leading to local failure.…”

Section: Introductionmentioning

confidence: 99%

Shear Performance of the Interface of Sandwich Specimens with Fabric-Reinforced Cementitious Matrix Vegetal Fabric Skins

Gil,

Mercedes,

Mendizabal

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

The utilization of the vegetal fabric-reinforced cementitious matrix (FRCM) represents an innovative approach to composite materials, offering distinct sustainable advantages when compared to traditional steel-reinforced concrete and conventional FRCM composites employing synthetic fibers. This article introduces a design for sandwich solutions based on a core of extruded polystyrene and composite skins combining mortar as a matrix and diverse vegetal fabrics as fabrics such as hemp and sisal. The structural behavior of the resulting sandwich panel is predominantly driven by the interaction between materials (mortar and polyurethane) and the influence of shear connectors penetrating the insulation layer. This study encompasses an experimental campaign involving double-shear tests, accompanied by heuristic bond-slip models for the potential design of sandwich solutions. The analysis extends to the examination of various connector types, including hemp, sisal, and steel, and their impact on the shear performance of the sandwich specimens. The results obtained emphasize the competitiveness of vegetal fabrics in achieving an effective composite strength comparable to other synthetic fabrics like glass fiber. Nevertheless, this study reveals that the stiffness of steel connectors outperforms vegetal connectors, contributing to an enhanced improvement in both stiffness and shear strength of the sandwich solutions.

show abstract

Experimental investigations of sandwich panels using high performance concrete thin plates exposed to fire

Cited by 13 publications

References 17 publications

Behaviour of Innovative Concrete Sandwich Panels with Pervious Concrete Core under Flexural Bending

Behaviour of Innovative Concrete Sandwich Panels with Pervious Concrete Core under Flexural Bending

Reaktör Gövdesinde Kullanılan Kompozit Levhalardaki Kusurlar Civarında Termal Gerilme Analizi

Shear Performance of the Interface of Sandwich Specimens with Fabric-Reinforced Cementitious Matrix Vegetal Fabric Skins

Contact Info

Product

Resources

About