Enhancing the flexural behaviour of masonry wallet using PP band and steel wire mesh

Banerjee, Susanta; Nayak, Sanket; Das, Sreekanta

doi:10.1016/j.conbuildmat.2018.11.001

Cited by 39 publications

(17 citation statements)

References 25 publications

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“…This shows that loading orientation does not effect the flexural strength when the surface is fully covered with WWM. Similar observations were also reported by Banerjee et al [15].…”

Section: Flexural Strengthsupporting

confidence: 92%

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Out-of-plane bending of masonry wall embedding with welded wire mesh (WWM) in different orientations

Marbaniang

Warjri

Marthong

2021

Innov. Infrastruct. Solut.

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The behaviour of brick masonry walls strengthened with four different patterns using welded wire mesh (WWM) overlay with mortar was investigated. The proposed WWM schemes are: (1) embedding WWM along the bed joint, (2) embedding WWM along the bed joint and a strip of WWM diagonally crossing on wall surface, (3) WWM alternately embedding along the bed joint and continuing to the surface of wall and (4) WWM fully covering on wall surface. Unstrengthened and WWMstrengthened specimens were subject to static out-of-plane flexural test with loading orientation perpendicular and parallel to the bed joint. The failure of the WWM-strengthened specimens with loading perpendicular to the bed joint was mainly due to rupture of the WWM while the failure of the WWM-strengthened specimens with loading parallel to the bed joint was mostly a sudden brittle failure. The flexural capacities of the walls specimens under perpendicular loading are higher in comparison with those of parallel loading. However, the flexural capacity is similar for both loading cases when the specimens are fully covered with WWM. The experimental results show that the adopted WWM-strengthening solutions produce a beneficial increase in flexural resistance, ductility and energy dissipation capacity making them suitable for strengthening of URM.

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“…This shows that loading orientation does not effect the flexural strength when the surface is fully covered with WWM. Similar observations were also reported by Banerjee et al [15].…”

Section: Flexural Strengthsupporting

confidence: 92%

“…These failures result in the loss of life and have economic impact in the society. To improve the strength of masonry walls, many studies have been done with different materials like FRP [5][6][7][8][9], welded wire mesh [1,[10][11][12][13][14] and polypropylene band [15].…”

Section: Introductionmentioning

confidence: 99%

Out-of-plane bending of masonry wall embedding with welded wire mesh (WWM) in different orientations

Marbaniang

Warjri

Marthong

2021

Innov. Infrastruct. Solut.

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“…Polypropylene nets and meshes became popular in the 1970s for many structural applications, such as sheets of yacht sails, fishing and agricultural nets, and safety fencing. In civil engineering, the applications are typically non-structural, where polypropylene nets are often used for the repair of deteriorated plasters and floors in old buildings ( Figure 5) [37][38][39][40]. In this experimental work, polypropylene fibers (PF) with a circular cross-section ( Figure 6a) and polypropylene nets (PNs) ( Figure 6b) were studied and tested as a structural method for reinforcing the shear wall of old buildings.…”

Section: Polypropylene In Conservation Engineeringmentioning

confidence: 99%

“…as sheets of yacht sails, fishing and agricultural nets, and safety fencing. In civil engineering, the applications are typically non-structural, where polypropylene nets are often used for the repair of deteriorated plasters and floors in old buildings (Figure 5)[37][38][39][40].…”

mentioning

confidence: 99%

Polypropylene as a Retrofitting Material for Shear Walls

et al. 2020

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In recent years, on account of their excellent mechanical properties, composite materials (made of epoxy-bonded carbon, glass, or aramid fibers) have been used to reinforce masonry walls against in-plane actions. These materials have proven to be an effective solution for the strengthening of unreinforced masonry (URM) walls. Lately, research has shifted to the study of different types of fibers to avoid the use of epoxy adhesives, whose long-term behavior and compatibility with masonry are poor. This paper describes an experimental program that investigated the behavior of URM shear walls strengthened with two types of commercially available polypropylene products: short fibers (fiber length = 12 mm) and polypropylene nets. This investigation aimed to evaluate the influence of polypropylene reinforcement, embedded into an inorganic matrix, in terms of the improvement of the lateral load-carrying capacity, failure mechanism, ductility, and energy dissipation capacity of URM wall panels, where nine walls were subjected to in-plane loads using a racking test setup. The study showed that using two layers of polypropylene fibers embedded into a cementitious matrix greatly increased the in-plane load capacity of the brickwork masonry. On the other hand, the test results indicated that polypropylene nets, used as a repair method for cracked shear walls, cannot improve the structural performance of the walls.

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“…Seismic strengthening of masonry structures has been an important research subject. Among the existing strengthening techniques, using traditional materials for surface treatments is the main categories [9][10][11][12][13][14]. By adding concrete or mortar layers on the masonry surface, the integrity of masonry structures can be strengthened.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Seismic Behavior of Masonry Walls Strengthened by Reinforced Mortar Cross Strips

et al. 2019

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Due to the poor seismic performance, strengthening of masonry structures is always a significant problem worthy to study. It has been proven that the bearing capacity of existing masonry buildings can be enhanced greatly with efficient strengthening measures. An experimental program was conducted to investigate seismic performance of un-reinforced masonry (URM) walls strengthened b,y reinforced mortar (RM) cross strips. Eleven walls were tested under horizontal low-cyclic load, simultaneously with a vertical constant load on the top face. Three URM walls were tested as reference. The other eight walls were externally strengthened with 40 and 60 mm thick of RM cross strips on one or both faces. Test results showed that externally strengthening with RM cross strips was an efficient way to enhance the seismic performance of URM walls. The failure modes were divided into shear failure and shear-compression failure. All the tested walls did not collapse until the test ended, while many diagonal cracks and few vertical cracks appeared on mortar strips. After strengthening, the shear capacity of the strengthened walls increased by at least 38.2%, and the reinforcement ratio was noted to be the key factor to influence the shear capacity with positive correlation. Besides, RM cross strips did improve deformation capacity greatly.

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Enhancing the flexural behaviour of masonry wallet using PP band and steel wire mesh

Cited by 39 publications

References 25 publications

Out-of-plane bending of masonry wall embedding with welded wire mesh (WWM) in different orientations

Out-of-plane bending of masonry wall embedding with welded wire mesh (WWM) in different orientations

Polypropylene as a Retrofitting Material for Shear Walls

Experimental Study on Seismic Behavior of Masonry Walls Strengthened by Reinforced Mortar Cross Strips

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