Shear Behavior of URM Retrofitted with FRP Overlays

Ehsani, Mohammad Reza; Saadatmanesh, Hamid; Al-Saidy, Abdullah

doi:10.1061/(asce)1090-0268(1997)1:1(17)

Cited by 88 publications

(45 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With regard to the testing of FRP reinforcement (horizontally and vertically placed uni-directional strips), Triantafillou [3] stressed that achievement of the full in-plane strength depends on proper anchorage. Similarly Ehsani [4] reported that the detachment of FRP from the masonry surface is critical. On the contrary, Borri [5] achieved an increase in strength for strengthened panels, without any detachment at diagonal compressive tests.…”

Section: Introductionmentioning

confidence: 88%

Shear testing and analysis of masonry walls strengthened with FRP

2014

JCE

View full text Add to dashboard Cite

Testing and analysis of walls strengthened with FRPLaboratory and in-situ shear tests of walls strengthened with Carbon FRP (Fiber Reinforced Polymer) strips and Glass FRP grid were compared to the results of different calculation models for masonry with FRP. Tests on new and old solid brick specimens showed an increase in shear strength and ultimate displacement. The best results were obtained with horizontally and horizontally-vertically epoxy-bonded strips and modified cement mortar grid configurations, worse with diagonal strips due to peeling failure. ACI and CNR calculation approaches showed the best agreement with experimental results. Ispitivanje i analiza nosivosti na posmik zidova ojačanih s FRP-omU radu je opisana usporedba laboratorijskih i terenskih ispitivanja na posmik zidova ojačanih karbonskim (C) trakama i staklenim (G) mrežicama u polimerima s rezultatima proračunskih modela za zidove s FRP-om. Rezultati ispitivanja na zidovima od nove i stare pune opeke pokazali su povećanje posmične nosivosti i graničnog pomaka -najviše za horizontalne i horizontalno-vertikalne epoksidom zalijepljene trake te mrežice u modificiranom cementnom mortu, a najmanje za dijagonalne trake zbog odstupanja sa zida. ACI i CNR računski modeli pokazali su najbolje podudaranje s eksperimentima.

show abstract

Section: Introductionmentioning

confidence: 88%

Shear testing and analysis of masonry walls strengthened with FRP

2014

JCE

View full text Add to dashboard Cite

show abstract

“…Various conventional methods have been used for strengthening masonry walls such as the construction of single or double jackets made of steel-reinforced shotcrete or cast-insitu concrete and grout injections (Ehsani et al 1997;Triantafillou 1998). These methods may be problematic due to the extra weight added to the building that increases the threat of failure under cyclic loading.…”

Section: Introductionmentioning

confidence: 99%

“…These methods may be problematic due to the extra weight added to the building that increases the threat of failure under cyclic loading. Such reinforcement has drawbacks, including the eventual deterioration of steel reinforcement due to corrosion, the need for large site work and scaffolding, and the effect on the appearance of the building which does not preserve the architectural value of the historical buildings (Ehsani et al 1997;Triantafillou 1998).…”

Section: Introductionmentioning

confidence: 99%

Strengthening of Historical Stone Masonry Buildings in Oman using Textile Reinforced Mortars

et al. 2017

View full text Add to dashboard Cite

Most historical buildings and structures in Oman were built using unreinforced stone masonry. Such structures are prone to damage from seismic activity as these structures have negligible resistance to tensile stresses. This paper presents an exploration of the physical and chemical properties of local building materials and the results of experiments with a new strengthening technique using textile reinforced mortar. Limestone and Sarooj were the main building materials used historically in these buildings. Sarooj is a local Omani term for artificial pozzolana produced by calcining clays. Two mortar mixes were developed, one as the jointing mortar and the second as the matrix mortar. The second part of the study consisted of the construction of three masonry walls and two columns of 0.35 x 0.25 x 1.2 m (width x depth x height). The three walls were strengthened using externally bonded textiles using three different combinations of mortar and textile. One column specimen was kept as a control and the other was fully wrapped with carbon textile reinforced mortar. The walls were tested under out-of-plane four-point bending. All the wall specimens showed a significant improvement in strength up to three times its self-weight and reasonable deformation before failure. The column specimens were tested under axial compression. The failure load and displacement of the strengthened columns increased by seven and three times, respectively, compared to the control column.

show abstract

“…Thus, the strength, stiffness and ductility of masonry buildings have reportedly been improved [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. On the other hand, methods forming the second group involve the strengthening of brick surfaces using materials such as FRP, wires, fibre materials, steel mesh, steel and wood sheets, and used tires [17][18][19][20][21][22]. A comprehensive review of such materials is given in the paper proposed by Lizundia et al [23].…”

Section: Introductionmentioning

confidence: 99%

Shaking table study of masonry buildings with reinforced plaster

Lakušić¹

2014

JCE

View full text Add to dashboard Cite

Shaking table study of masonry buildings with reinforced plasterThe objective of this study is to determine seismic behaviour of masonry buildings with reinforced plaster mortar, with a particular focus on the modification of structural response due to application of the polypropylene and steel reinforced plaster, as compared to an ordinary type of plaster. The resistance of one-storey single-span masonry buildings subjected to seismic load on the shaking table is investigated in the study. Experimental results revealed natural periods, response acceleration spectrums, and spectrum interactions of masonry buildings. In addition, finite element models of test buildings were established, and their results were compared with those obtained during experimental study. Ispitivanje zidanih građevina s armiranom žbukom na vibracijskom stolu U radu je prikazano određivanje seizmičkog ponašanja zidanih građevina sa žbukom od armiranog morta, pri čemu je naglasak stavljen na promjenu odziva konstrukcije kada se umjesto obične žbuke koristi žbuka armirana polipropilenom i čelikom. Na vibracijskom stolu analizirana je otpornost na seizmičko opterećenje jednokatnih, jednorasponskih zidanih građevina. U toku ispitivanja, određeni su prirodni periodi, spektri ubrzanja odziva i spektar ovisnosti zidanih građevina. Za ispitane su građevine izrađeni i modeli metodom konačnih elemenata te su rezultati proračuna uspoređeni s rezultatima ispitivanja.Ključne riječi: zidana građevina, armirana žbuka, vibracijski stol, dinamičko ponašanje Vorherige Mitteilung

show abstract

Shear Behavior of URM Retrofitted with FRP Overlays

Cited by 88 publications

References 5 publications

Shear testing and analysis of masonry walls strengthened with FRP

Shear testing and analysis of masonry walls strengthened with FRP

Strengthening of Historical Stone Masonry Buildings in Oman using Textile Reinforced Mortars

Shaking table study of masonry buildings with reinforced plaster

Contact Info

Product

Resources

About