Shear Strengthening Masonry Panels with Sheet Glass-Fiber Reinforced Polymer

Stratford, Tim; Pascale, Giovanni; Manfroni, Odine; Bonfiglioli, Barbara

doi:10.1061/(asce)1090-0268(2004)8:5(434)

Cited by 99 publications

(46 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When addressing the problem of reinforcing historic masonry walls, it is possible to classify the retrofitting methods in two main categories aimed at increasing the masonry shear (in-plane) strength or at improving the wall behavior against out-of-plane collapse mechanisms. A variety of approaches has been used for in-plane strengthening of masonry walls with FRPs (Triantafillou 1990, Ehsani et al 1999, Valluzzi et al 2002, Corradi et al 2002, Stratford et al 2004, ElGawady et al 2005. Usually FRP are externally applied using epoxy resins, but for high value, historically important buildings non-intrusive, reversible and localized reinforcement schemes are often advised.…”

Section: Introductionmentioning

confidence: 99%

The Reticulatus method for shear strengthening of fair-faced masonry

Corradi

Borri

Castori

et al. 2016

Bull Earthquake Eng

View full text Add to dashboard Cite

This paper presents the results of several experimental campaigns recently carried out by the authors and devoted to the investigation of the mechanical performance of wall panels strengthened by applying repointing mortar and high strength stainless steel or composite cords. The reinforcement system, known as Reticulatus, allows the reinforcement of regular and irregular-shape masonry walls, when the fair-faced aspect must be kept. In the perspective of using this reinforcement method, this article summarizes the research that has been done so far, presenting new original test results and discussing the design procedures. Twenty-two square wall panels were loaded in their plane by means of a single point load acting through the panel's diagonal. Experimental results are presented for four types of cord 2 reinforcement using matched samples, reinforced and not. Increases in shear strength from 15 to 170% were achieved for the strengthened panels. Each wall panel was loaded well into the lateral post-elastic regime and then unloaded.Experimental results were in good agreement with predictions from simple models which assume the wall panels to behave like a plate, neglecting the contribution of the repointing mortar, and accounting for the non-linear behavior of the masonry.

show abstract

Section: Introductionmentioning

confidence: 99%

The Reticulatus method for shear strengthening of fair-faced masonry

Corradi

Borri

Castori

et al. 2016

Bull Earthquake Eng

View full text Add to dashboard Cite

show abstract

“…Among new retrofitting methods, substantial research has been also conducted on reinforcing wall panels with composite materials [9][10][11][12][13]. Many critical issues have been recently investigated, including ensuring a durable bond between the FRP (Fiber Reinforced Polymer) and masonry substrate given the degradation effects due to ageing effects.…”

Section: Introductionmentioning

confidence: 99%

The use of transverse connectors as reinforcement of multi-leaf walls

et al. 2016

View full text Add to dashboard Cite

The need for new retrofitting techniques is the consequence of an increasing interest in the conservation of historic construction. The global behavior of a stone masonry structure is often governed by the level of connection between masonry wall leaves and the overall quality of the masonry material. This paper presents the results of an investigation carried out on site and in the laboratory on multi-leaf stone masonry panels strengthened using stainless steel rod inserted in a grouted fabric sleeve. The aim is to increase the collaboration between weakly connected masonry leaves. Pull-out tests were conducted on site on full-scale stone masonry wall panels, with the aim of studying the force required to pull out a connector under uniaxial tension. Several wall panels were assembled in the laboratory using solid calcareous stones and weak mortar and the effectiveness of the connectors was tested in shear and compression on both virgin and damaged panels. The experimental tests allowed the analysis of the behavior of the multi-leaf panels. Experimental results show that a substantial improvement of the wall panels' mechanical behavior can be achieved by applying transverse connectors.

show abstract

“…Some of the retrofitting methods include the seismic retrofit of URM walls using externally-bonded or near surface mounted Fiber Reinforced Polymer (FRP) laminates, bars and fabrics. Experiments on various patterns and layouts of FRP have validated that FRP can significantly increase in-plane and out-of-plane strength of URM walls [7,[9][10][11][12][13][14][15][16][17][18][19][20][21][22]. Higher strength to weight ratio, ease of application and corrosion resistance are some of well-known advantages of FRP retrofitting technique over conventional retrofitting methods.…”

Section: Introductionmentioning

confidence: 99%

“…Higher strength to weight ratio, ease of application and corrosion resistance are some of well-known advantages of FRP retrofitting technique over conventional retrofitting methods. On the other side, FRP is a costly material and exhibits a brittle failure [11,14,23].…”

Section: Introductionmentioning

confidence: 99%

Fiber Reinforced Polymer and Polypropylene Composite Retrofitting Technique for Masonry Structures

et al. 2015

View full text Add to dashboard Cite

In the current research work, an attempt is made to increase the seismic capacity of unreinforced masonry (URM) structures by proposing a new composite material which can improve shear strength and deformation capacity of URM wall systems. Fiber Reinforced Polymer (FRP) having high tensile and shear stiffness can significantly increase in-plane and out-of-plane strength of masonry walls, but, inherently, FRP strengthened wall systems exhibit brittle failure under extreme seismic loading. Polypropylene (PP-band) is a low cost material with sufficient ductility and deformation capacity. Keeping in view the behavior of FRP and PP-band, a composite of FRP and PP-band is proposed for retrofitting of URM walls. Mechanical behavior of the proposed composite material is assessed by carrying out an in-plane diagonal compression test and an out-of-plane bending test on twenty-five 1/4-scaled masonry wall panels. Experimental plan for each panel, URM, PP-band retrofitted, FRP retrofitted and FRP + PP-band retrofitted masonry, is diagonal compression test and three-point bending test. Experimental results have determined that FRP + PP-band composite increased, not only the initial peak strength, but also the ductility, deformation capacity and residual strength of URM wall systems. OPEN ACCESSPolymers 2015, 7 964

show abstract

Shear Strengthening Masonry Panels with Sheet Glass-Fiber Reinforced Polymer

Cited by 99 publications

References 5 publications

The Reticulatus method for shear strengthening of fair-faced masonry

The Reticulatus method for shear strengthening of fair-faced masonry

The use of transverse connectors as reinforcement of multi-leaf walls

Fiber Reinforced Polymer and Polypropylene Composite Retrofitting Technique for Masonry Structures

Contact Info

Product

Resources

About