Failure particularities of adhesively bonded joints between pultruded GFRP composite profiles

Ungureanu, Dragoş; Ţăranu, Nicolae; Isopescu, Dorina Nicolina; Lupăşteanu, Vlad; Scutaru, Maria–Cristina; Hudisteanu, I

doi:10.1088/1757-899x/400/3/032011

Cited by 12 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To address these challenges, the authors plan to print a prototype-scale structure using the M28 mix and the 20 mm nozzle. The prototype will be tested in dynamic/seismic mode, and reinforcing methods will be designed based on the authors previously developed studies related to fiber-reinforced polymer materials and textile-reinforced mortars (Figure 27) [75][76][77][78][79][80][81]. The results indicate that the M27 mix printed with a 20mm nozzle had significantly higher values compared to the M28 mix printed with a 45mm nozzle.…”

Section: Discussionmentioning

confidence: 99%

A Novel Approach for 3D Printing Fiber-Reinforced Mortars

et al. 2023

View full text Add to dashboard Cite

Three-dimensional printing with cement-based materials is a promising manufacturing technique for civil engineering applications that already allows for the design and the construction of complex and highly customized structures using a layer-by-layer deposition approach. The extrusion mechanism is one of the most expensive parts of the 3D printer. Also, for low-scale 3D printers, based on the shape of the extruder and the geometry limitation of the mixing blade, the 3D mixture is often limited to a narrow range of materials due to the risk of layer splitting or blockage. Therefore, there is a need to develop affordable and feasible alternatives to the current design–fabrication–application approach of 3D printers. In this paper, various newly designed mixtures of fiber-reinforced mortars that can be 3D printed using only a commercially available screw pump are analyzed based on their fresh properties and mechanical characteristics. The results, in terms of extrudability, buildability, flowability, and flexural and compressive strengths, highlight the potential of using this technology for constructing complex structures with high strength and durability. Also, the reduced facility requirements of this approach enable 3D printing to be made more available for civil engineering applications. With further innovations to come in the future, this method and these mixtures can be extended for the sustainable and economically feasible printing of single-family housing units.

show abstract

Section: Discussionmentioning

confidence: 99%

A Novel Approach for 3D Printing Fiber-Reinforced Mortars

et al. 2023

View full text Add to dashboard Cite

show abstract

“…According to the Mechanical Theory, the degree of adhesion that may be obtained for an adhesively bonded joint is directly linked to the roughness of the substrates [25,26]. Thus, 30 of the 34 steel plates were sandblasted to increase the specific roughness of the surface that comes into contact with the adhesive [27].…”

Section: Experimental Set-upmentioning

confidence: 99%

“…After all the necessary materials for assembling the specimens were shaped to their nominal dimensions, the first step consisting in preparing the steel surface was performed. According to the Mechanical Theory, the degree of adhesion that may be obtained for an adhesively bonded joint is directly linked to the roughness of the substrates [25,26]. Thus, 30 of the 34 steel plates were sandblasted to increase the specific roughness of the surface that comes into contact with the adhesive [27].…”

Section: Experimental Set-upmentioning

confidence: 99%

Structural Response of Bonded Joints between FRP Composite Strips and Steel Plates

et al. 2021

View full text Add to dashboard Cite

This paper presents the outcomes of an experimental and numerical study performed on epoxy-bonded single lap joints (SLJs) between carbon fiber-reinforced polymer (CFRP) composite strips and steel elements. For the experimental program, 34 specimens were prepared by varying the type of the composite strip and the type of adhesives and their thicknesses; all specimens were loaded in axial tension up to failure. The specific failure mechanisms were identified and commented on the basis of the performed tests, and the load–displacement curves were plotted. Additionally, the strain distributions along the bond lengths at different load stages, the shear stress–displacements (slip) variations and the stress–strain distributions for the CFRP strips were plotted and investigated. The numerical simulations, based on 3D finite element method (FEM) analysis, provided consistent results, in good agreement with the experimental ones for all parameters that were investigated and discussed in this paper.

show abstract

“…The TRM system has significant advantages compared to the well-established Fibre Reinforced Polymer (FRP) technical solution for external confinement of degraded concrete [6,7], steel [8,9], masonry [10,11], or, even FRP elements [12][13][14], Such auspicious features are related to satisfactory mechanical performance, convenient fire resistance, reversibility, higher moisture permeability and compatibility with most of the masonry substrates [15]. Also, the typical failure mode of TRM strengthened masonry elements is characterized by a combined mechanism of progressive mortar cracking and slippage of the textile reinforcements, which results into an increased overall ductility.…”

Section: Introductionmentioning

confidence: 99%

Shear Structural Response of a Prototype Strengthening System Designed for Stone Masonry Panels

Spiridon¹,

Isopescu²,

Ungureanu³

et al. 2022

IJMMT

View full text Add to dashboard Cite

This paper presents the set-up needed for an experimental study regarding the in-plane shear behaviour of stone masonry panels, strengthened with a prototype hemp reinforced mortar. Seven stone masonry panels will be designed and manufactured for this purpose: one unreinforced, three plastered on both sides and three plastered on a single side. The aim of this experimental study is to evaluate the effectiveness of the prototype hemp reinforced mortar in enhancing the shear strength and the displacement capacity of the stone masonry walls. In addition, the design and the manufacturing stages of the prototype hemp reinforced mortar have been carefully described, thus allowing an easy application of this TRM system on a large scale. Crucial aspects regarding the shear behaviour of stone masonry unstrengthen/strengthened walls, such as the quantification of the ultimate forces and displacements, the description of the dominant failure modes, and the characterization of the stress-strain state may be analysed by performing the envisaged experimental study based on the proposed set up.

show abstract

Failure particularities of adhesively bonded joints between pultruded GFRP composite profiles

Cited by 12 publications

References 8 publications

A Novel Approach for 3D Printing Fiber-Reinforced Mortars

A Novel Approach for 3D Printing Fiber-Reinforced Mortars

Structural Response of Bonded Joints between FRP Composite Strips and Steel Plates

Shear Structural Response of a Prototype Strengthening System Designed for Stone Masonry Panels

Contact Info

Product

Resources

About