Development of sandwich panels for multi-functional strengthening of RC buildings: Characterization of constituent materials and shear interaction of panel assemblies

Sousa, Christoph de; Barros, Joaquim A. O.; Correia, João R.; Valente, Tiago

doi:10.1016/j.conbuildmat.2020.120849

Cited by 14 publications

(14 citation statements)

References 41 publications

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“…Other researchers have investigated the use of prefabricated panels made of textile reinforced concrete (TRC) with embedded phase-change materials (PCMs) as a quick onsite intervention for enhancing the structural and thermal performance of building envelopes. 29,30 Further research on prefabricated TRC panels involves the inclusion of capillary tubes (TCPs) for improving energy performance and the implementation of quasi-static cyclic loading tests on infilled RC frames and masonry walls. 31 Despite intensified research efforts, seismic-plus-energy upgrading through a single intervention is a relatively new concept presenting several challenges that have not been addressed yet.…”

Section: Introductionmentioning

confidence: 99%

“…The authors concluded that adequate retrofitting of the buildings’ envelope could achieve reductions of about 70% in heating and cooling energy demand. Other researchers have investigated the use of prefabricated panels made of textile reinforced concrete (TRC) with embedded phase‐change materials (PCMs) as a quick onsite intervention for enhancing the structural and thermal performance of building envelopes 29,30 . Further research on prefabricated TRC panels involves the inclusion of capillary tubes (TCPs) for improving energy performance and the implementation of quasi‐static cyclic loading tests on infilled RC frames and masonry walls 31 .…”

Section: Introductionmentioning

confidence: 99%

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Seismic and energy upgrading of existing buildings—full‐scale testing of retrofitted masonry‐infilled RC frames

Christis Z,

Renos,

Nicholas

et al. 2023

Earthq Engng Struct Dyn

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Taking into consideration the seismic vulnerability and the poor energy performance of the European building stock, and the increasing socio‐economic and environmental need for integrating seismic upgrading with energy efficiency improvement, an experimental study involving the lateral load testing of full‐scale one‐story one‐bay masonry infilled RC frames and load‐bearing masonry walls was carried out in the framework of the SupERB research project aiming to investigate the efficiency of integrated seismic and energy upgrading systems. The integrated approach is based on the use of textile reinforced mortar (TRM) overlays combined either with traditional thermal insulation (extruded polystyrene, XPS) or with thermally efficient mortar incorporating phase change material (PCMs). The proposed integrated approach can be applied on the exterior face of the structure, so as to facilitate its application in real structures in the easiest possible way and with minimum disturbance to the inhabitants of the buildings. In this paper, only the structural performance of masonry‐infilled RC frames retrofitted with the proposed integrated approach is presented, while the energy benefits will be presented in a separate paper. Thus, in this paper, the structural performance of an integrated seismic and energy upgrading approach was assessed through five full‐scale one‐story one‐bay masonry infilled RC frames that were retrofitted with different schemes of TRM combined with thermal insulation materials subjected to in‐plane displacement‐controlled cyclic loading. The following parameters were investigated experimentally: the number of TRM overlays (one or two layers of TRM combined with thermal insulation), the use of thermally efficient PCM‐enhanced TRM layer in contrast to the use of conventional XPS insulation, and different retrofitting configurations (placement of the TRM in a sandwich form over and/or under the novel or the traditional insulation). From the results obtained in this study, it can be concluded that all energy and seismic upgrading systems examined have a positive impact on the response of the structural system to cyclic loading, with the ones with two layers of TRM having a better performance compared to the ones with one layer of TRM and all of them a better performance than the control specimen. The use of two layers of TRM cancels the drawback of infilled frames, which at very small drifts they reach their maximum capacity and after that they rapidly fall to the capacity of the bare frame, providing capacities above 80% of their peak capacity for drifts up to 2%. In all the tests the TRM whether it was combined with XPS or included PCMs contributed to a better distribution of the cracks in the infill and delayed premature brittle failures. The presence of the TRM had also the advantage that it remained intact throughout the tests preventing the fall of debris out of the plane of the infilled frame, both in the retrofitted and unretrofitted sides.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Seismic and energy upgrading of existing buildings—full‐scale testing of retrofitted masonry‐infilled RC frames

Christis Z,

Renos,

Nicholas

et al. 2023

Earthq Engng Struct Dyn

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“…The higher post-cracking tensile capacity provided by fibre reinforcement to cement based materials is being explored for reducing, or even eliminating, conventional steel reinforcements in flooring [1], road pavements [2], tunnelling [3][4][5][6], prefabricated concrete structural applications [7][8][9], elevated slabs [10][11][12], or for developing new constructions systems [13,14], in an attempt of producing more cost competitive and sustainable built environment.…”

Section: Introductionmentioning

confidence: 99%

Innovative prefabricated lightweight slab system of high structural performance

Barros

Costa

Frazão

et al. 2022

Engineering Structures

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“…Shear bonds are the most stressed elements of the bearing system of a panel building. Thanks to them, the multi-storey building represents rather rigid and strong spatial system capable to resist vertical, horizontal and seismic loads, uneven deformations of the base, climatic temperature-humidity and emergency influences [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Stress-strain state panel buildings and welded butt joints

Lyublinskiy

Ubysz

2021

E3S Web Conf.

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The constructive basis of a multi-story building is the spatial bearing system of buildings. In accordance with the chosen mathematical apparatus of the study, the spatial load-bearing system of a multi-storey building is a discrete vertical reinforced concrete structure formed by shear walls, and united by constant height connections with certain deformability. The above elements of the building support system provide strength, stability and durability of the structure as a whole. The spatial operation of the system is manifested in the fact that when loading one of its elements, other elements are included in the work. The purpose of the present study is to assess the influence shear bonds of the building’s bearing system on its stress-strain state using a specific building.

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Development of sandwich panels for multi-functional strengthening of RC buildings: Characterization of constituent materials and shear interaction of panel assemblies

Cited by 14 publications

References 41 publications

Seismic and energy upgrading of existing buildings—full‐scale testing of retrofitted masonry‐infilled RC frames

Seismic and energy upgrading of existing buildings—full‐scale testing of retrofitted masonry‐infilled RC frames

Innovative prefabricated lightweight slab system of high structural performance

Stress-strain state panel buildings and welded butt joints

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