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Dr. Marco Francesco Funari
ISISE, Department of Civil Engineering, University of Minho, 4800-058 Guimarães, Portugal

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0 FEM
0 limit analysis
0 Seismic protection

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Journal article
Published: 08 March 2021 in Crystals
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Steel Reinforced Grout (SRG) materials are generating considerable interest as strengthening system of reinforced concrete (RC) structures. They are finding increasing use in several civil engineering applications mainly due to the advantages they offer over traditional material such as high strength to weight ratio, ease of application, durability and low price. This paper describes the results of an experimental investigation carried out on SRG shear strengthened RC beams and gives evidence of the Digital Image Correlation (DIC) effectiveness as a measurement system. The tests performed had two main objectives: (i) assess the effectiveness of continuous and discontinuous U-wrapped jackets comprising a different number of layers and strips; (ii) assess the shear crack distribution during the tests by means of the DIC measurements. The results confirmed that reinforcing RC beams with SRG jackets can increase the load-bearing capacity; when the beam was reinforced with a continuous two-layered SRG strip, an increase of 84% was observed (compared to the unreinforced beam). The Linear Variable Differential Transformers (LVDT) measurements validated the results obtained by means of the DIC.

ACS Style

Marco Funari; Salatore Verre. The Effectiveness of the DIC as a Measurement System in SRG Shear Strengthened Reinforced Concrete Beams. Crystals 2021, 11, 265 .

AMA Style

Marco Funari, Salatore Verre. The Effectiveness of the DIC as a Measurement System in SRG Shear Strengthened Reinforced Concrete Beams. Crystals. 2021; 11 (3):265.

Chicago/Turabian Style

Marco Funari; Salatore Verre. 2021. "The Effectiveness of the DIC as a Measurement System in SRG Shear Strengthened Reinforced Concrete Beams." Crystals 11, no. 3: 265.

Journal article
Published: 02 February 2021 in Theoretical and Applied Fracture Mechanics
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Sandwich structures are widely used for the design and fabrication of lightweight structural systems, due to their capability to exhibit excellent structural and thermal performances at low material usage. Understanding the phenomena of propagation of macro-cracks in the core and delamination at the face-to-core interface are aspects of great computational interest. Linking sophisticated models with the actual characterisation of their mechanical properties is essential in view of real engineering applications. The elastic and fracture characterisation of the materials composing the core is particularly relevant because its cracking affects the capacity of the sandwich structures to carry out transverse loads. In this work, PVC foams typically used as the inner core in structural applications are investigated over a range of foam densities. Firstly, the elastic properties of foams under compressive uniaxial loading are measured using a full-field methodology. Subsequently, Semi-Circular specimens are tested in bending varying the position of supports to generate all range of mixed fracture modes. Suitable fracture criteria are also considered in order to assess their capability to evaluate fracture parameters in PVC foams. Finally, the parameters experimentally determined have been used to validate the response provided by a numerical model developed by the authors.

ACS Style

Marco Francesco Funari; Saverio Spadea; Paolo Lonetti; Paulo B. Lourenço. On the elastic and mixed-mode fracture properties of PVC foam. Theoretical and Applied Fracture Mechanics 2021, 112, 102924 .

AMA Style

Marco Francesco Funari, Saverio Spadea, Paolo Lonetti, Paulo B. Lourenço. On the elastic and mixed-mode fracture properties of PVC foam. Theoretical and Applied Fracture Mechanics. 2021; 112 ():102924.

Chicago/Turabian Style

Marco Francesco Funari; Saverio Spadea; Paolo Lonetti; Paulo B. Lourenço. 2021. "On the elastic and mixed-mode fracture properties of PVC foam." Theoretical and Applied Fracture Mechanics 112, no. : 102924.