Flexural behaviour of light-weight sandwich panels composed by concrete and EPS

Carbonari, Gilberto; Cavalaro, Sérgio Henrique Pialarissi; Cansario, M. M.; Aguado, Antonio

doi:10.1016/j.conbuildmat.2012.04.080

Cited by 56 publications

(26 citation statements)

References 10 publications

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“…Considering the reduction of heat loss and energy consumption, the EPS that is often used in eco-geotechnical engineering [27,28] is added into the substrate for heat preservation. EPS particles used in substrate could make itself lightweight [29,30]. In the current study, EPS particles with diameter varying from 1 mm to 3 mm were used.…”

Section: Methodsmentioning

confidence: 99%

Thermal Properties of Carbon Fiber-Reinforced Lightweight Substrate for Ecological Slope Protection

Huang

Xiao

et al. 2019

Energies

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A new ecological substrate is proposed to achieve a desired electric conduction and heating to protect the slope plants from freeze injury. Expanded polystyrene (EPS), cement, carbon fiber, graphite, and raw soil are the main components of the ecological substrate. The electrical conductivity, heating efficiency, thermo-sensitivity, and heat preservation of the substrate are experimentally investigated. The result shows that the addition of carbon fiber could significantly decrease resistivity of substrate, but the effect of fiber content exceeding 3% on the resistivity of substrate becomes insignificant. Conductive fine materials (i.e., carbon fiber and graphite powder) covering the surface of EPS would result in a significant reduction of the global resistivity of non-dry substrate, but it could only slightly affect the counterpart of the completely dry substrates. The substrate could hardly be formed when the EPS content exceeds 4%. As EPS content increases, the contact surface decreases and the resistivity of the substrate increases. The peak temperature at 30 min of substrate without root is higher than that of substrate with plant roots. Nevertheless, the temperature alteration ratio below 40 • C of substrate with plant root is nearly the same as its counterpart in the substrate without roots. The resistance of the substrate with plant roots increases with the temperature. The resistance of rootless substrate decreases by the heat action of the loosely bound water. EPS particles improve the heat preservation performance of substrate, but the heat preservation performance of substrate degrades with the growth of plants.roots grow, it would provide anchoring into bedrock or stable soil layers, which would be further favorable for the slope stability [12][13][14].Due to the high production efficiency, soil-spraying technology, which was first developed by Japanese scholars [15], has been widely used in vegetation engineering for slope restoration. Nevertheless, it was reported that it is difficult to facilitate vegetation on the steep slopes [16]. To address this issue, various researchers [17] attempted to spray the ecological substrates on the slope surface for the slope restoration. The ingredients of the ecological substrate are usually composed of fibers, loam, cement, and a pH-adjusting agent, etc. literature [18] indicated that the ecological substrate can greatly promote the plants' growth, thereby effectively restoring the slope. However, it has been reported that the young plants for slope protection, such as cynodondactylon and zoysiagrass, would stop growing and be fatal to the cold weather, especially when it encounters continuous snow in the winter [19,20]. However, to date, little attention has been paid to the functionality of ecological substrate in protecting the plant growth in extremely cold weather, in contrast to the studies on the vegetative properties of ecological substrate [21,22].Therefore, the current work aims to propose a new type of ecological substrate with the capability of pro...

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Section: Methodsmentioning

confidence: 99%

Thermal Properties of Carbon Fiber-Reinforced Lightweight Substrate for Ecological Slope Protection

Huang

Xiao

et al. 2019

Energies

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“…Integral and diaphragms action are two major research issues to be studied. Steel wire meshes on the either side of the polystyrene are fastened with inclined or 90 o steel connectors can accomplish the integral action (Carbonari et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Shear Strength of Rc Deep Beam Panels – A Review

Raj¹

2014

IJRET

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Behaviour of RC beam panels is influenced by several factors. An alternative for conventional beam is 3D steel wire precast panel to behave as deep beam in various locations of RC building systems. Understanding the influence of factors involved on behaviour and strength is needed. The factors to be discussed include; compressive strength of concrete, percentage of tension reinforcement, quantity and distribution of vertical and horizontal web reinforcement, aggregate interlock, shear span-to-depth ratio, distribution of loading, side cover, and depth of beam. The influence of above parameters on the shear strength of reinforced concrete deep beams has been reviewed.

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“…The maximum stress acting at the mortar layer may be obtained using the maximum bending moment [1] and the classical resistance of materials equation to estimate the stresses due to combined flexion-compression (17). This is represented in equation [3] in which A eq represents the cross-section of the mortar layer and r layer is given by equation [4].…”

Section: Failure Due To Combined Flexion-compressionmentioning

confidence: 99%

“…The maximum bending moment M max [1] and the maximum lateral displacement ν max [2] at the center of the panel may be obtained using the Euler hypothesis (17) for a slab subjected to a load P* with an eccentricity "e". In these equations, the buckling height L buckling is considered as half of the actual panel length whereas E m and I layer represent the mortar elasticity modulus and the moment of inertia for a single mortar layer.…”

Section: Failure Due To Combined Flexion-compressionmentioning

confidence: 99%

Experimental and analytical study about the compressive behavior of eps sandwich panels

et al. 2013

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This study presents a detailed characterization of the behavior of EPS sandwich panels subject to normal load taking into account several variables. For that, two experimental programs were performed, leading to the proposal of an analytical formulation to estimate the maximum load resisted. The results obtained show how the height of the panel, the material properties, the position and configuration of the reinforcement may affect the resistance of panels. Special attention should be given to the eccentric position of the reinforcement, which may reduce considerably the maximum load resisted. Some recommendations about the optimum placement of the reinforcement are proposed.

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Flexural behaviour of light-weight sandwich panels composed by concrete and EPS

Cited by 56 publications

References 10 publications

Thermal Properties of Carbon Fiber-Reinforced Lightweight Substrate for Ecological Slope Protection

Thermal Properties of Carbon Fiber-Reinforced Lightweight Substrate for Ecological Slope Protection

Shear Strength of Rc Deep Beam Panels – A Review

Experimental and analytical study about the compressive behavior of eps sandwich panels

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