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Out-of-plane flexural strengthening of URM wallettes using basalt fibre reinforced polymer composite
Graphical abstract Display Omitted
Highlights Application of BFRP composite in strengthening of unreinforced masonry (URM). Study of orientation of bed-joints and different configurations of BFRP. Failure modes, strength, rigidity, ductility, and energy absorption capacity are studied. Ordinary beam theory used to predict capacity of strengthened URM. Comparison of efficiency of BFRP with other types of fibres.
Abstract An experimental study is presented on unreinforced masonry (URM) wallettes strengthened using basalt fibre reinforced polymer (BFRP) composite wrap. Eight URM and 28 strengthened wallettes, along with their constituent materials, are tested in two orthogonal directions. The masonry wallettes are placed horizontally and tested in one-way bending condition under two-point (line) out-of-plane loading. The variables examined are loading direction, reinforcement ratio and BFRP configurations. The performance of the strengthening technique is assessed by examining failure modes, strength, rigidity, energy absorption capacity and ductility. In addition to the experimental investigation, an analytical method is also proposed to predict the ultimate moment capacity of the BFRP strengthened masonry wallettes whose failure mode is rupture of FRP. Non-dimensional parameters are defined to identify the generalized behaviour of the wallettes. The strengthening technique enhances the flexural strength of the wallettes up to 6.4 times, deformability up to 30 times, and energy absorption capacity up to 214 times, as compared to the URM wallettes. A comparison with analytical results shows that the ordinary beam theory, predicts the flexural capacity of BFRP strengthened masonry in rupture failure mode with reasonable accuracy.
Out-of-plane flexural strengthening of URM wallettes using basalt fibre reinforced polymer composite
Graphical abstract Display Omitted
Highlights Application of BFRP composite in strengthening of unreinforced masonry (URM). Study of orientation of bed-joints and different configurations of BFRP. Failure modes, strength, rigidity, ductility, and energy absorption capacity are studied. Ordinary beam theory used to predict capacity of strengthened URM. Comparison of efficiency of BFRP with other types of fibres.
Abstract An experimental study is presented on unreinforced masonry (URM) wallettes strengthened using basalt fibre reinforced polymer (BFRP) composite wrap. Eight URM and 28 strengthened wallettes, along with their constituent materials, are tested in two orthogonal directions. The masonry wallettes are placed horizontally and tested in one-way bending condition under two-point (line) out-of-plane loading. The variables examined are loading direction, reinforcement ratio and BFRP configurations. The performance of the strengthening technique is assessed by examining failure modes, strength, rigidity, energy absorption capacity and ductility. In addition to the experimental investigation, an analytical method is also proposed to predict the ultimate moment capacity of the BFRP strengthened masonry wallettes whose failure mode is rupture of FRP. Non-dimensional parameters are defined to identify the generalized behaviour of the wallettes. The strengthening technique enhances the flexural strength of the wallettes up to 6.4 times, deformability up to 30 times, and energy absorption capacity up to 214 times, as compared to the URM wallettes. A comparison with analytical results shows that the ordinary beam theory, predicts the flexural capacity of BFRP strengthened masonry in rupture failure mode with reasonable accuracy.
Out-of-plane flexural strengthening of URM wallettes using basalt fibre reinforced polymer composite
Padalu, Pravin Kumar Venkat Rao (Autor:in) / Singh, Yogendra (Autor:in) / Das, Sreekanta (Autor:in)
Construction and Building Materials ; 216 ; 272-295
30.04.2019
24 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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