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Composite Behaviour of Textile Reinforced Reactive Powder Concrete Sandwich Façade Elements
RISE - Research Institutes of Sweden, Safety and Transport, Safety.ORCID iD: 0000-0002-3481-1368
RISE - Research Institutes of Sweden, Safety and Transport, Safety.ORCID iD: 0000-0002-0033-1841
RISE - Research Institutes of Sweden, Safety and Transport, Safety.
RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.ORCID iD: 0000-0003-1904-7426
2018 (English)In: International Journal of Concrete Structures and Materials, ISSN 1976-0485, E-ISSN 2234-1315, Vol. 12, no 1, article id 71Article in journal (Refereed) Published
Abstract [en]

Within the EC funded project smart elements for sustainable building envelopes, carbon textile reinforcement was incorporated into reactive powder concrete, namely textile reinforced reactive powder concrete (TRRPC), to additionally improve the post-cracking behaviour of the cementitious matrix. This high-performance composite material was included as outer and inner façade panels in prefabricated and non-load bearing sandwich elements along with low density foamed concrete (FC) and glass fibre reinforced polymer continuous connecting devices. Experiments and finite element analysis (FEA) were applied to characterize the structural performance of the developed sandwich elements. The mechanical behaviour of the individual materials, components and large-scale elements were quantified. Four-point bending tests were performed on large-scale TRRPC-FC sandwich element beams to quantify the flexural capacity, level of composite action, resulting deformation, crack propagation and failure mechanisms. Optical measurements based on digital image correlation were taken simultaneously to enable a detailed analysis of the underlying composite action. The structural behaviour of the developed elements was found to be highly dependent on the stiffness and strength of the connectors to ensure composite action between the two TRRPC panels. As for the FEA, the applied modelling approach was found to accurately describe the stiffness of the sandwich elements at lower load levels, while describing the stiffness in a conservative manner after the occurrence of connector failure mechanisms. © 2018, The Author(s).

Place, publisher, year, edition, pages
2018. Vol. 12, no 1, article id 71
Keywords [en]
finite element analysis (FEA), foam concrete (FC), four-point bending test, reactive powder concrete (RPC), sandwich elements, textile reinforced concrete (TRC), Bending tests, Cracks, Fiber reinforced plastics, Finite element method, Intelligent buildings, Optical correlation, Reinforced concrete, Sandwich structures, Stiffness, Structural analysis, Textiles, Foam concretes, Reactive powder concrete, Sandwich element, Textile reinforced concretes, Failure (mechanical)
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Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-36594DOI: 10.1186/s40069-018-0301-4Scopus ID: 2-s2.0-85057099836OAI: oai:DiVA.org:ri-36594DiVA, id: diva2:1268749
Available from: 2018-12-06 Created: 2018-12-06 Last updated: 2018-12-06Bibliographically approved

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Flansbjer, MathiasWilliams Portal, NatalieMueller, Urs

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