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Arabian Journal for Science and Engineering

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18.02.2023 | Research Article-Civil Engineering

Strength Prediction of Notched Foamed Concrete Beam Strengthened with KFRP Plates under Flexural Load

verfasst von: M. R. Maulana, S. Sugiman, H. Ahmad, Z. M. Jaini, Hazrina Mansor

Erschienen in: Arabian Journal for Science and Engineering | Ausgabe 10/2023

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Abstract

An experimental study to investigate the load at failure, failure mechanism, and crack propagation of a notched foamed concrete beam externally reinforced with a 200 mm length kenaf fiber reinforced polymer (KFRP) and tested under a four-point bending test (4PBT) is presented. In this study, the notch depth was varied. KFRP plates were fabricated by placing weaved yarns and smeared with Sika S31. From the experimental work, the shear failure and FRP rupture were seen. Various normalized notch depths significantly influenced allowable ultimate displacement, crack initiation, and failure modes. Following the preceding experimental series, a 2-D numerical modeling framework was developed to simulate the failure of the KFRP-strengthened foamed concrete beam. Independent tests had been carried out to determine material properties of the foamed concrete beam (i.e., un-notched beam strength, \({\sigma }_{o}\) and fracture energy, \({G}_{c}\)), later they were incorporated within a traction–separation relationship as a constitutive model of finite element modeling. The fracture energy values were calculated using Hillerborg’s model, which agrees well with the previous literature. Extended finite element model techniques were adopted for the strength prediction works. A good agreement was found between the predicted and experimental results with discrepancies of less than 15%.

Vorheriger Artikel Numerical and Experimental Research on Optimal Pick Layout Design of the Bolter Miner Cutting Head

Nächster Artikel Optimal Design of RC Bracket and Footing Systems of Precast Industrial Buildings Using Fuzzy Differential Evolution Incorporated Virtual Mutant

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Titel: Strength Prediction of Notched Foamed Concrete Beam Strengthened with KFRP Plates under Flexural Load
verfasst von: M. R. Maulana
S. Sugiman
H. Ahmad
Z. M. Jaini
Hazrina Mansor
Publikationsdatum: 18.02.2023
Verlag: Springer Berlin Heidelberg
Erschienen in: Arabian Journal for Science and Engineering / Ausgabe 10/2023
Print ISSN: 2193-567X
Elektronische ISSN: 2191-4281
DOI: https://doi.org/10.1007/s13369-023-07688-x

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