Reinforced Jacketing of Wall Panels: A Comparative Experimental Investigation

2019 ◽  
Vol 817 ◽  
pp. 536-543
Author(s):  
Romina Sisti ◽  
Antonio Borri ◽  
Marco Corradi ◽  
Allen Dudine

This paper presents the results of a laboratory investigation carried out on reinforced mortar plates. Reinforced mortar plates are often applied for shear reinforcement of wall panels. Different reinforcement materials have been embedded into the mortar plates: GFRP (Glass Fiber Reinforced Polymers) grids, fiberglass fabrics and welded steel-wire meshes. This is the first stage in the development of a new type of GFRP-reinforced mortar jacketing, that will provide a solution to enhance the lateral capacity of historic buildings. Such reinforced plates can also be used in applications on new masonry constructions where buildings with damaged or cracked wall panels need to be repaired or retrofitted. The mortar plates were built from commercially available GFRP grids and fabrics that were embedded into the mortar to form a reinforced-mortar square structure of 1 m with a thickness of 30 mm. The plates were tested in the laboratory, under quasi-static patch loads that exceeded the expected seismic loads. The goal of the testing program was to assess the design and construction techniques used, with a view to designing the reinforcement of a historic building. The laboratory tests demonstrated that the GFRP-reinforced plates had sufficient stiffness and strength to function effectively. By comparing the results with the more traditional steel-wire mesh reinforcement, it was also possible to perform a comparative analysis.

2002 ◽  
Vol 13 (2) ◽  
pp. 25-32
Author(s):  
Kazuo TATEISHI ◽  
Kenshi YOSHIMINE ◽  
Koji OTA ◽  
Takayoshi MATSUI

2018 ◽  
Vol 910 ◽  
pp. 41-45 ◽  
Author(s):  
Krishnamorthy Raghukandan ◽  
Somasundaram Saravanan

In this study, aluminum based composites with stainless steel wire-mesh as reinforcement is fabricated by explosive compaction technique. Stacks containing four layers of alternatively positioned aluminum sheets and stainless steel wire-meshes are explosively compacted at varied explosive masses and the results are reported. Microstructure of explosive compacted aluminum composite reveal a smooth interface at lower explosive mass, while formation of reacted products are observed at higher energetic conditions. Though the hardness of the post clad composite is higher than pre-clad materials, the maximum hardness is observed at the first interface.


Author(s):  
Lubomir Matejicka ◽  
Christos T. Georgakis ◽  
Holger H. Koss ◽  
Philipp Egger

<p>Numerous cable-supported bridges in cold climate regions are prone to seasonal ice or snow shedding, primarily from the bridge cables. Specific atmospheric conditions are required to trigger this phenomenon, which often results in dangerously sized pieces of ice or snow falling off the cables on the bridge deck below. Ice or snow shedding events that have led to bridge closures and insurance claims have been increasingly reported throughout the world in the past two decades. In this paper, a recently developed passive solution in the form of a steel wire mesh, which can be effectively used on new as well as on existing bridges, is introduced. Despite having a higher drag coefficient than the conventional helically filleted cable surface, the wire mesh is capable of retaining the ice on the surface of the cable for an extended time. This leads to prolonged ice melting and fragmentation of the ice before or during shedding, thus achieving a substantial risk reduction.</p>


10.30544/365 ◽  
2018 ◽  
Vol 24 (2) ◽  
pp. 113-122
Author(s):  
Ivana Atanasovska ◽  
Dejan Momčilović ◽  
Milorad Gavrilovski

The developing of the universal tool for testing of tensile properties of hexagonal steel wire mesh for civil engineering is described in this paper. The developed tool allows repeated testing of hexagonal steel wire mesh of different dimensions without tool changes and is generally related with the procedure for the determination of tensile strength properties of different wire meshes. The construction of the tool which is related to the aims of the decreased mass consumption and high operation safety is described in detail. Particular attention is focused on the safety component of the tool which ensuring safety testing by preventing slipping of the wire mesh samples during loading. The paper also presents the Finite Element Analysis performed in order to verify the high safety factor of the developed tool. The contact regions with stress concentration behavior are analyzed by non-linear solvers. The obtained results and conclusion about the possible contributions of the developed universal tool for extensively testing of wire meshes for civil engineering are discussed.


2021 ◽  
Author(s):  
Antonio Pol ◽  
Fabio Gabrieli ◽  
Lorenzo Brezzi

AbstractIn this work, the mechanical response of a steel wire mesh panel against a punching load is studied starting from laboratory test conditions and extending the results to field applications. Wire meshes anchored with bolts and steel plates are extensively used in rockfall protection and slope stabilization. Their performances are evaluated through laboratory tests, but the mechanical constraints, the geometry and the loading conditions may strongly differ from the in situ conditions leading to incorrect estimations of the strength of the mesh. In this work, the discrete element method is used to simulate a wire mesh. After validation of the numerical mesh model against experimental data, the punching behaviour of an anchored mesh panel is investigated in order to obtain a more realistic characterization of the mesh mechanical response in field conditions. The dimension of the punching element, its position, the anchor plate size and the anchor spacing are varied, providing analytical relationships able to predict the panel response in different loading conditions. Furthermore, the mesh panel aspect ratio is analysed showing the existence of an optimal value. The results of this study can provide useful information to practitioners for designing secured drapery systems, as well as for the assessment of their safety conditions.


2012 ◽  
Vol 562-564 ◽  
pp. 56-59 ◽  
Author(s):  
Jian Zhuang ◽  
Meng Meng Du ◽  
Heng Zhi Cai ◽  
Ya Jun Zhang ◽  
Da Ming Wu

A facile method for manufacturing super hydrophobic surfaces is presented using the stainless steel wire mesh as templates. The rough surfaces of polymers including polycarbonate, polypropylene and PMMA are prepared with hot embossing on different specifications of stainless steel wire mesh. Scanning electron microscopy (SEM) results reveal that the surfaces roughness of the polymers can be controlled by selecting templates. Contact angle measurement shows that the water contact angles(WCA) rise with the increase of surface roughness, especially, the water contact angle on the PC surfaces prepared with specifications of 635mesh screen can reach to 152.3°, alias super hydrophobic surfaces.


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