scholarly journals Dissemination and Planned Demonstrator of New Precast Concrete Sandwich Panels

Proceedings ◽  
2018 ◽  
Vol 2 (15) ◽  
pp. 1152
Author(s):  
Aidan Reilly ◽  
Richard O'Hegarty ◽  
Oliver Kinnane
Keyword(s):  
Thermal Performance ◽  
Precast Concrete ◽  
Sandwich Panels ◽  
National Standards ◽  
Structural Performance ◽  
Small Scale ◽  
Thermal Testing ◽  
Bending Tests ◽  
The Uk ◽  
Better Than

This paper presents work developing thin precast concrete sandwich panels for recladding and overcladding applications. These panels are designed for the retrofit of precast concrete structures where the underlying frame is structurally sound. Structural and thermal testing has been carried out to validate the performance of the panels. The panels are designed to have thermal performance better than current national standards, and this has been verified through hot-box testing of components and small-scale panels. Structural performance of the panels has been tested with 3 point bending tests on full-scale panels. Work is in progress towards demonstration of the panels on an occupied building in the UK.

scholarly journals Behaviour of Horizontal Connections in Precast Walls under Lateral Loading

2019 ◽  
Vol 8 (3) ◽  
pp. 436-440
Keyword(s):  
Load Transfer ◽  
Precast Concrete ◽  
High Strength ◽  
Structural Performance ◽  
Horizontal Connections ◽  
Wall Specimen ◽  
Efficient Load Transfer ◽  
Precast Walls ◽  
Strength And Ductility ◽  
Better Than

The design of connections is one of the most important considerations in the structural design of precast concrete structures. The purpose of the connection is to transfer loads, restrain movement and provide stability. Within one joint there may be several load transfers, each one must be designed for adequate strength and ductility and appropriately detailed. The proposed investigation aims to achieve efficient horizontal connections in precast walls with improved structural performance under various loads. HYSD reinforcement dowels are used as connectors. The arrangement of dowels is varied to achieve the efficient load transfer in the walls. The experimental investigation on three precast wall and one monolithic wall depicts that the precast wall exhibits high strength than the monolithic wall specimen and structural performance were found to be better than the monolithic wall specimen and also the efficient load transfer is achieved in the precast wall

Comparison Study on Thermal Performance of the RC Sandwich Panels with Different Connectors

2012 ◽  
Vol 253-255 ◽  
pp. 674-678
Author(s):  
Ruo Nan Liu ◽  
Kai Yin Zhang ◽  
Meng Lan Tao
Keyword(s):  
Thermal Performance ◽  
Sandwich Panel ◽  
Sandwich Panels ◽  
Thermal Calculation ◽  
Comparison Study ◽  
Better Than

To explore the thermal performance of RC Sandwich Panel with different connectors, three experiments were carried out to develop a study. In the experiments, three RC Sandwich Panels were manufactured using three kinds of connectors, the thermal performance of them was separately tested by corresponding device, and the thermal calculation of every panel was done according to the current thermal code. It is found that thermal performance of the three RC Sandwich Panels will be changed with connector’s variation. The results show that the thermal performance of RC Sandwich Panel using nonmetal connector is better than using metal connector, and the thermal performance of the RC Sandwich Panel using little section connector is better than using bigger section.

scholarly journals Experimental Study of Structural Performance of Precast Concrete Insulated Sandwich Panels with Cruciform Cross Section GFRP Connectors

2019 ◽  
Vol 303 ◽  
pp. 01004
Author(s):  
Xiaohong Yang ◽  
Yu Jiang ◽  
Huyue Sun ◽  
Zhenghua Sun
Keyword(s):  
Cross Section ◽  
Precast Concrete ◽  
Sandwich Panels ◽  
Fiber Reinforced Polymer ◽  
Structural Performance ◽  
Shear Tests ◽  
Reinforced Polymer ◽  
Tension Load ◽  
Glass Fiber Reinforced ◽  
Ultimate Tension Load

This study investigated the structural performance of precast concrete insulated sandwich panels with cruciform cross section glass fiber-reinforced polymer (GFRP) connectors, based on tensile and shear tests. 5 tensile specimens and 4 shear specimens were fabricated and tested. The load-displacement relation and failure mode of the specimens were analyzed. The results revealed that the average ultimate tension load of the tested specimens with single GFRP connector was 13.14kN with concrete splitting or concrete partial cone failure. For the shear specimens, the average ultimate shear load was 14.83kN with rupture failure of GFRP connector. Furthermore, durability of sandwich panels was investigated, by fabricating and testing 48 tensile specimens with GFRP connectors immersed in tension load had sufficient safety in different design situations.

Retraction notice to “Thermal performance of super-insulated precast concrete structural sandwich panels” [ENB 176C (2018) 418–430]

2019 ◽  
Vol 186 ◽  
pp. 416
Author(s):  
Sani Mohammed Bida ◽  
Farah Nora Aznieta Abdul Aziz ◽  
Mohd Saleh Jaafar ◽  
Farzad Hejazi ◽  
Abu Bakar Nabilah
Keyword(s):  
Thermal Performance ◽  
Precast Concrete ◽  
Sandwich Panels ◽  
Retraction Notice

RETRACTED: Thermal performance of super-insulated precast concrete structural sandwich panels

2018 ◽  
Vol 176 ◽  
pp. 418-430 ◽  
Author(s):  
Sani Mohammed Bida ◽  
Farah Nora Aznieta Abdul Aziz ◽  
Mohd Saleh Jaafar ◽  
Farzad Hejazi ◽  
Abu Bakar Nabilah
Keyword(s):  
Thermal Performance ◽  
Precast Concrete ◽  
Sandwich Panels

State-of-the-Art of Precast Concrete Sandwich Panels

PCI Journal ◽  
1991 ◽  
Vol 36 (6) ◽  
pp. 78-98 ◽  
Author(s):  
Amin Einea ◽  
David C. Salmon ◽  
Gyula J. Fogarasi ◽  
Todd D. Culp ◽  
Maher K. Tadros
Keyword(s):  
State Of The Art ◽  
Precast Concrete ◽  
Sandwich Panels

The Making of a Model: Teacher Education for Looked After Children

2019 ◽  
Author(s):  
Sarah Alix
Keyword(s):  
Teacher Education ◽  
Virtual School ◽  
Small Scale ◽  
Early Model ◽  
Trainee Teachers ◽  
Looked After Children ◽  
Continued Education ◽  
Stage Process ◽  
The Uk ◽  
Training Practice

<p>We report a three-stage process of developing a model of teacher education to encompass provision for Looked After Children in schools in the UK. First, a survey of 78 trainee teachers explored their perceptions and early practice concerning educating Looked After Children (LAC). There are currently 68,840 children of school age in the UK that have been ‘looked after’ for 12 months or more, and their education is of particular concern both within political and educational circles. Second, teacher education programmes were then reviewed to highlight omissions in relation to LAC, and to initiate an early model for improved training practice, not only for teachers in training but also for the continued professional development of those active in service. Third came the development of a model through consultation with major stakeholders in the field of education for Looked After Children. These were state and charitable organisations, and incorporated responses from Virtual School Headteachers (VSHs) who have oversight of the education for LAC, who are placed on a ‘virtual school’ roll even though physically spread across the schools within a local authority and beyond. The outcomes of the study are limited by the small scale of the research, but provide a validated template for the initial and continued education of teachers for LAC.</p>

scholarly journals Experimental and Numerical Studies on the Structural Performance of a Double Composite Wall

2021 ◽  
Vol 11 (2) ◽  
pp. 506
Author(s):  
Sun-Jin Han ◽  
Inwook Heo ◽  
Jae-Hyun Kim ◽  
Kang Su Kim ◽  
Young-Hun Oh
Keyword(s):  
Shear Strength ◽  
Precast Concrete ◽  
Structural Performance ◽  
Behavioral Characteristics ◽  
Element Analysis ◽  
Numerical Studies ◽  
Shear Performance ◽  
Flexural Analysis ◽  
Composite Wall ◽  
Current Code

In this study, experiments and numerical analyses were carried out to examine the flexural and shear performance of a double composite wall (DCW) manufactured using a precast concrete (PC) method. One flexural specimen and three shear specimens were fabricated, and the effect of the bolts used for the assembly of the PC panels on the shear strength of the DCW was investigated. The failure mode, flexural and shear behavior, and composite behavior of the PC panel and cast-in-place (CIP) concrete were analyzed in detail, and the behavioral characteristics of the DCW were clearly identified by comparing the results of tests with those obtained from a non-linear flexural analysis and finite element analysis. Based on the test and analysis results, this study proposed a practical equation for reasonably estimating the shear strength of a DCW section composed of PC, CIP concrete, and bolts utilizing the current code equations.

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