Development of insulated FRP-confined Precast Concrete Sandwich panel with side and top confining plates and dry bond

2016 ◽  
Vol 152 ◽  
pp. 444-454 ◽  
Author(s):  
Thomas G. Norris ◽  
An Chen
Keyword(s):  
Sandwich Panel ◽  
Precast Concrete ◽  
Precast Concrete Sandwich Panel

scholarly journals Thermal Performance of Precast Concrete Sandwich Panel (PCSP) Design for Sustainable Built Environment

2017 ◽  
Vol 245 ◽  
pp. 032073
Author(s):  
Peniel Ang Soon Ern ◽  
Lim Mei Ling ◽  
Narimah Kasim ◽  
Zuhairi Abd Hamid ◽  
Md Asrul Nasid Bin Masrom
Keyword(s):  
Built Environment ◽  
Thermal Performance ◽  
Sandwich Panel ◽  
Precast Concrete ◽  
Precast Concrete Sandwich Panel

Experimental study on precast concrete sandwich panel with cross-shaped GFRP connectors

2020 ◽  
Vol 72 (3) ◽  
pp. 149-162 ◽  
Author(s):  
Junqi Huang ◽  
Qing Jiang ◽  
Xun Chong ◽  
Xianguo Ye ◽  
Decai Wang
Keyword(s):  
Experimental Study ◽  
Sandwich Panel ◽  
Precast Concrete ◽  
Precast Concrete Sandwich Panel

scholarly journals Structural Model for Fibre-Reinforced Precast Concrete Sandwich Panels

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Luis Segura-Castillo ◽  
Nicolás García ◽  
Iliana Rodríguez Viacava ◽  
Gemma Rodríguez de Sensale
Keyword(s):  
Structural Model ◽  
Precast Concrete ◽  
Cost Savings ◽  
Production Costs ◽  
Practical Case ◽  
Analysis Model ◽  
Steel Mesh ◽  
Tensile Forces ◽  
Precast Concrete Sandwich Panel ◽  
Precast Elements

Fibre-reinforced concrete (FRC) has been used in numerous types of precast elements around the world, as has been shown that reductions in production costs and time can be obtained; however, there is little experience of this material in Uruguay. Therefore, our study analysed the feasibility of its utilisation in this country. This paper reports on the development of a simple analysis model that is useful for the design of FRC precast elements. The model efficiency was evaluated through its application to a practical case study—vertical precast concrete sandwich panel systems tested by bending. Three different types of reinforcement were analysed: synthetic fibres, metal fibres, and steel mesh. With the developed model, the cost-efficiency of different panel geometries and amounts of reinforcement were evaluated. The model allowed consideration of the contribution of the fibres to withstand internal tensile forces of the panels and therefore be able to substitute for the steel mesh in the panel wythes. It was found that it was possible to optimise panel reinforcement and geometry, thereby reducing wythe thickness. Besides the reduction in production time, it was possible to achieve cost savings of up to 10% by replacing steel mesh with fibres and of more than 20% if the geometry was also modified.

Insulation Type Effect on the Direct Shear Behavior of Concrete Sandwich Panel (CSP) with Non-Shear Connectors

2013 ◽  
Vol 663 ◽  
pp. 154-158 ◽  
Author(s):  
Tae Sik Oh ◽  
Seok Joon Jang ◽  
Kang Min Lee ◽  
Hyun Do Yun
Keyword(s):  
Reinforced Concrete ◽  
Sandwich Panel ◽  
Residential Buildings ◽  
Precast Concrete ◽  
Test Results ◽  
Concrete Wall ◽  
Concrete Walls ◽  
Shear Connectors ◽  
Reinforced Concrete Walls ◽  
Pull Out

Precast concrete sandwich panels (PCSP) are often used as exterior cladding of residential buildings due to thermal efficiency. PCSP systems consist of two precast reinforced concrete walls separated by a layer of insulation and connected with connectors which penetrate the insulation layer and are anchored at two precast walls. This paper provides the pull-out test results of concrete sandwich panel (CSP) with non-shear connectors. The variables in this study were the casting direction of reinforced concrete walls and types of insulation. Test results indicated that the types of insulations and casting direction have a significant effect on the bond strength between concrete wall and insulation. The effect of insulation type is notable for CSP cast horizontally concrete walls.

scholarly journals Risk Assessment of Joint Sealing Tape in Joints between Precast Concrete Sandwich Panels Resilient to Climate Change

Buildings ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 343
Author(s):  
Charlotte Svensson Tengberg ◽  
Lars Olsson ◽  
Carl-Eric Hagentoft
Keyword(s):  
Climate Change ◽  
Risk Assessment ◽  
Precast Concrete ◽  
Technical Solution ◽  
Run Off ◽  
The Monte Carlo Method ◽  
Design Build ◽  
Precast Concrete Sandwich Panel ◽  
Moisture Conditions ◽  
Technical Solutions

Lately, a new technical solution, pre-compressed joint sealing tapes in precast concrete sandwich panel facades, has been introduced in Sweden. Although the consequences of performance failure can go far beyond the component, affecting the building, the introduction has gained little attention in terms of risk assessment in the literature and in industry. Instead, reference cases are used as verification without formal evaluation, potentially leading to serial failure. The aim of this paper was to provide guidance on how a design–build contractor should handle this new technical solution. A risk assessment framework using a design–build contractor’s perspective was applied to the case. The framework addresses new technical solutions or adaption to new conditions (e.g., climate change) with the aim of preventing serial failures. Moisture conditions within the joints were simulated using present and future climates, and probabilities of failure were assessed using the Monte Carlo method. The results of the study included identified risks of failure associated with the solution and factors influencing the probability of failure. A main issue was the exposure of the facade to driving rain but also run-off areas and imperfections in the application of the joint sealing tape. Future climate changes affect performance negatively. In conclusion, the new technical solution might be possible to use if draining potential is ensured in all detailed designs and a set of recommendations, including full-scale testing, is provided for the design–build contractor.

Innovative Energy-Saving Sandwich-Panels for Industrial Construction

2020 ◽  
Vol 787 (12) ◽  
pp. 47-51
Author(s):  
V.N. Nikolaev ◽  
◽  
V.F. Stepanova ◽  
A.V. Mikhailova ◽  
◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Sandwich Panel ◽  
Precast Concrete ◽  
Sandwich Panels ◽  
Thermal Characteristics ◽  
Protective Layer ◽  
Housing Construction ◽  
Concrete Wall ◽  
Large Panel ◽  
Leading Position

Today, large-panel housing construction occupies a leading position, both in terms of construction speed and sales, which contributes to an increase in the volume of precast concrete housing construction. Outdated series of large-panel houses do not meet modern requirements. Old faceless panel houses are gradually replaced by beautiful housing complexes with different types of facades. At present, in the technology of construction of panel houses from sandwich-panels, the relevant trend is to reduce the standard thickness of the facade layer of a three-layer sandwich-panel (GOST 31310–2015 “ Three-Layer Reinforced Concrete Wall Panels with Effective Insulation. General Technical Conditions”) from 70 mm to 40 mm or less. Panel houses require a reduction in metal consumption, material consumption and improvement of thermal characteristics. This requires the development and implementation of new materials. The use of such construction products made of composite materials as diagonal flexible composite connections, flexible mounting loops and composite reinforcement mesh will make it possible to reduce the thickness of the protective layer of concrete without compromising the stability of the structure under the influence of the external environment due to the high corrosion resistance of the composite, reduce the weight of the panel, reduce the cost of manufacturing a unit of panel, increase the energy efficiency of the panel, ensure long-term strength of enclosing structures – create an innovative energy-efficient reinforced concrete sandwich panel of the XXI century.

Structural performance and section optimization of precast concrete sandwich panels with pin-type GFRP connectors

2021 ◽  
pp. 136943322199976
Author(s):  
Jun-Qi Huang ◽  
Qing Jiang ◽  
Xun Chong ◽  
Chao-Liang Zhao ◽  
Zi-Yang Wang
Keyword(s):  
Precast Concrete ◽  
Shear Capacity ◽  
Structural Performance ◽  
Composite Action ◽  
Pull Out ◽  
Loading Direction ◽  
Section Type ◽  
Precast Concrete Sandwich Panel ◽  
Direct Tensile ◽  
Direct Tensile Test

A precast concrete sandwich panel (PCSP) offers a good potential in the application of façade wall due to the improved energy efficiency. In this study, the structural performance of PCSP with pin-type glass fiber reinforced polymer (GFRP) connectors was investigated, and an optimization characterized by ribbed structural wythe was proposed and studied. Firstly, the pull-out and shear capacity of the pin-type connector were evaluated through direct tensile test and direct shear test, respectively. Thereafter, seven PCSP specimens were fabricated and tested under four points flexural load. The investigating parameters included the structural wythe thickness, loading direction, insulation bond, and section type of the structural wythe. The load-deflection relationship, crack pattern, failure mode, load-strain relationship, and degree of composite action of the PCSP were studied and compared. It was concluded that: (1) the tested PCSPs presented ductile failures; (2) the structural wythe thickness, loading direction and insulation bond would influence the cracking, yielding, and peak loads of the tested PCSP; (3) the PCSP with pin-type GFRP connectors could be designed as non-composite type owing to the low composite action; and (4) the proposed ribbed structural wythe could achieve a lightweight PCSP while considerable flexural stiffness and capacity could be retained.

scholarly journals High Temperature Performance of a prefabricated concrete sandwich panel

2021 ◽  
Vol 233 ◽  
pp. 03028
Author(s):  
Shouqian Liu ◽  
Zhan Song
Keyword(s):  
High Temperature ◽  
Sandwich Panel ◽  
Precast Concrete ◽  
Wire Mesh ◽  
Steel Bar ◽  
Concrete Layer ◽  
Core Column ◽  
Sandwich Wall ◽  
Strength And Stiffness ◽  
Sandwich Wall Panel

The innovative sandwich wall panel studied in this paper can be used as the load-bearing member of the structure. In addition to the traditional sandwich panel structure, the new panel system also has the characteristics of spiral stirrups along the section of the core column, 650mm column spacing, foam concrete for insulation layer and self-compacting concrete for outer layer. In addition, in order to improve the overall strength and stiffness of the panel, a unique wire system consisting of two vertical wire mesh connected by a short horizontal steel bar is adopted in the concrete layer. In order to study the mechanical properties of the new panel system at high temperature, ABAQUS simulation was carried out. The simulation results show that the new precast concrete sandwich wall system has good resistance to high temperature and still has good bearing capacity after high temperature.

scholarly journals Load Deflection and Ultimate Strength Properties of Sandwich Lightweight Foamed Concrete Panels

2021 ◽  
pp. 1-17
Author(s):  
Alonge O. Richard ◽  
Opatade J. Adeolu ◽  
Olusola Ololade Afolake
Keyword(s):  
Mild Steel ◽  
Sandwich Panel ◽  
Precast Concrete ◽  
Steel Wire ◽  
Strength Properties ◽  
Load Test ◽  
Wire Mesh ◽  
High Yield ◽  
Concrete Panels ◽  
Foamed Concrete

The interaction that exists between two wythes of concrete, inner and outer, goes a long way to establish the structural behavior of the whole components and particularly, lightweight foamed concrete sandwich panel. Precast concrete sandwich panel (PCSP) has become a household name since it has been utilized in the construction of structural shell in some building types. This research investigated the load deflection of six different lightweight foamed concrete panels. The six panels were produced using a foamed concrete mix of the same density and the mechanical properties of the mix were tested. Each panel consists of two withes (facings) made of lightweight foamed concrete and polystyrene was used as the core and the insulation layer. Mild steel wire mesh of 6mm sizes was used as reinforcement in three of the panels while 9mm diameter high yield steel was used in the remaining three panels. The reinforcement in both facing was tied together using shear and bend to an angle of 450.End crushing of the panels was avoided using concrete capping. An axial load test was conducted, the load deflection, mode of failure and crack patterns of the panels was observed. The result also revealed that panels with concrete capping deflect along with their Wythe in the same directions and small deflection was recorded in panels with concrete capping. Cracking modes in panels reinforced with 6mm mild steel were controlled by material failure while those in panels with 9mm high yield steel, cracks was only observed at the lower part of the capping.

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