Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Multi-scale experimental investigation on the structural behaviour of novel nanocomposite/natural textile-reinforced mortars
Natural fibre composites present a very appealing area of research for the structural strengthening of masonry structures. Natural fibres possess several drawbacks, such as low initial stiffness and poor interfacial bond behaviour with inorganic matrices that hinder their functions. Such challenges were overcome by applying an innovative nanocomposite-based impregnation system that was pre-engineered and presented by the authors previously. In this paper, a full experimental study involving pullout, tensile tests and large-scale testing via diagonal compression test was carried out to evaluate the structural efficiency of the developed system. Remarkable improvement at yarn-to-matrix level upon nanocomposite coating was observed. At a medium bond length, yarn rupture was observed, highlighting the great anchorage provided by the nanocomposite coating within the matrix. Coupons cast with the developed system demonstrated outstanding composite behaviour and multicracking under tensile loading. Finally, wallets strengthened with the developed system displayed multiple cracks and maintained high shear capacity (40–60 % of τmax) at remarkably large displacements developed at later stages of the test. Such ductility is crucial for retrofitting masonry structures, especially in seismic areas. ; This work was partially financed by FEDER funds through the Competitively Factors Operational Program (COMPETE) and by national funds through the Foundation for Science and Technology (FCT) within the scope of the project POCI-01–0145-FEDER-007633. This work was partly financed by FCT/MCTES through national funds (PIDDAC) via the R&D Unit Institute for Sustainability and Innovation in Structural Engineering (ISISE), under reference UIDB/04029/2020 (https://doi.org/10.54499/UIDB/04029/2020), and the Associate Laboratory Advanced Production and Intelligent Systems ARISE, under reference LA/P/0112/2020. IPC acknowledges the support of FCT through National Funds References UIDB/05256/2020 and UIDP/05256/2020. The authors wish to ...
Multi-scale experimental investigation on the structural behaviour of novel nanocomposite/natural textile-reinforced mortars
Natural fibre composites present a very appealing area of research for the structural strengthening of masonry structures. Natural fibres possess several drawbacks, such as low initial stiffness and poor interfacial bond behaviour with inorganic matrices that hinder their functions. Such challenges were overcome by applying an innovative nanocomposite-based impregnation system that was pre-engineered and presented by the authors previously. In this paper, a full experimental study involving pullout, tensile tests and large-scale testing via diagonal compression test was carried out to evaluate the structural efficiency of the developed system. Remarkable improvement at yarn-to-matrix level upon nanocomposite coating was observed. At a medium bond length, yarn rupture was observed, highlighting the great anchorage provided by the nanocomposite coating within the matrix. Coupons cast with the developed system demonstrated outstanding composite behaviour and multicracking under tensile loading. Finally, wallets strengthened with the developed system displayed multiple cracks and maintained high shear capacity (40–60 % of τmax) at remarkably large displacements developed at later stages of the test. Such ductility is crucial for retrofitting masonry structures, especially in seismic areas. ; This work was partially financed by FEDER funds through the Competitively Factors Operational Program (COMPETE) and by national funds through the Foundation for Science and Technology (FCT) within the scope of the project POCI-01–0145-FEDER-007633. This work was partly financed by FCT/MCTES through national funds (PIDDAC) via the R&D Unit Institute for Sustainability and Innovation in Structural Engineering (ISISE), under reference UIDB/04029/2020 (https://doi.org/10.54499/UIDB/04029/2020), and the Associate Laboratory Advanced Production and Intelligent Systems ARISE, under reference LA/P/0112/2020. IPC acknowledges the support of FCT through National Funds References UIDB/05256/2020 and UIDP/05256/2020. The authors wish to ...
Multi-scale experimental investigation on the structural behaviour of novel nanocomposite/natural textile-reinforced mortars
Abbass, Ali (Autor:in) / Oliveira, Daniel V. (Autor:in) / Lourenço, Paulo B. (Autor:in) / Paiva, Maria C. (Autor:in)
01.09.2024
137798
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| Elsevier | 2024
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