Retrofitting effect of unreinforced masonry walls using FRPs

B. I. Bae, B. K. Park, H. K. Choi, Chang-Sik Choi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Unreinforced masonry buildings have significant portion of existing and historical buildings around the world. Recent earthquakes have shown the needs of seismic retrofitting for these types of buildings. There are many types of retrofitting materials for URM(unreinforced masonry buildings) such as shotcrete, ECC and FRPs. Many engineers use many types of fiber reinforced polymers because these types of material enhance the shear strength of wall without expansion of wall sectional area and additional weight of total structure. However, the complexity of mechanical behavior of masonry shear wall and the lack of experimental data of masonry wall which was retrofitted by FRPs may cause the problem that engineers hard to determine the retrofitting level. Determining and providing the information for retrofitting effect of FRPs for masonry shear wall, this paper investigate in-plane shear behavior of URM and retrofitted masonry shear walls using two types of different FRP materials. Specimens were designed to idealize the wall of low rise apartment which was built in 1970s Korea with no seismic reinforcements and have 1 aspect ratio. Retrofitting materials were carbon FRP and Hybrid sheet which have different elastic modulus and ultimate strain. Consequently, this study will evaluate the structural capacity of masonry shear wall and retrofitting effect of FRP sheet for in plane shear behavior comparing with evaluation method for reinforced concrete beam which was retrofitted by FRPs.

Original languageEnglish
Title of host publicationAdvances in Fracture and Damage Mechanics IX, FDM 2010
Pages765-768
Number of pages4
DOIs
StatePublished - 2011 Jan 5
Event9th International Conference on Fracture and Damage Mechanics, FDM 2010 - Nagasaki, Japan
Duration: 2009 Sep 202009 Sep 22

Publication series

NameKey Engineering Materials
Volume452-453
ISSN (Print)1013-9826

Other

Other9th International Conference on Fracture and Damage Mechanics, FDM 2010
CountryJapan
CityNagasaki
Period09/09/2009/09/22

Fingerprint

Retrofitting
Shear walls
Engineers
Shear strength
Reinforced concrete
Aspect ratio
Earthquakes
Reinforcement
Polymers
Carbon
Elastic moduli
Fibers

Keywords

  • Aramid sheet
  • CFS
  • Hybrid sheet
  • Retrofitting
  • Unreinforced masonry wall

Cite this

Bae, B. I., Park, B. K., Choi, H. K., & Choi, C-S. (2011). Retrofitting effect of unreinforced masonry walls using FRPs. In Advances in Fracture and Damage Mechanics IX, FDM 2010 (pp. 765-768). (Key Engineering Materials; Vol. 452-453). https://doi.org/10.4028/www.scientific.net/KEM.452-453.765
Bae, B. I. ; Park, B. K. ; Choi, H. K. ; Choi, Chang-Sik. / Retrofitting effect of unreinforced masonry walls using FRPs. Advances in Fracture and Damage Mechanics IX, FDM 2010. 2011. pp. 765-768 (Key Engineering Materials).
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Bae, BI, Park, BK, Choi, HK & Choi, C-S 2011, Retrofitting effect of unreinforced masonry walls using FRPs. in Advances in Fracture and Damage Mechanics IX, FDM 2010. Key Engineering Materials, vol. 452-453, pp. 765-768, 9th International Conference on Fracture and Damage Mechanics, FDM 2010, Nagasaki, Japan, 09/09/20. https://doi.org/10.4028/www.scientific.net/KEM.452-453.765

Retrofitting effect of unreinforced masonry walls using FRPs. / Bae, B. I.; Park, B. K.; Choi, H. K.; Choi, Chang-Sik.

Advances in Fracture and Damage Mechanics IX, FDM 2010. 2011. p. 765-768 (Key Engineering Materials; Vol. 452-453).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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T1 - Retrofitting effect of unreinforced masonry walls using FRPs

AU - Bae, B. I.

AU - Park, B. K.

AU - Choi, H. K.

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PY - 2011/1/5

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N2 - Unreinforced masonry buildings have significant portion of existing and historical buildings around the world. Recent earthquakes have shown the needs of seismic retrofitting for these types of buildings. There are many types of retrofitting materials for URM(unreinforced masonry buildings) such as shotcrete, ECC and FRPs. Many engineers use many types of fiber reinforced polymers because these types of material enhance the shear strength of wall without expansion of wall sectional area and additional weight of total structure. However, the complexity of mechanical behavior of masonry shear wall and the lack of experimental data of masonry wall which was retrofitted by FRPs may cause the problem that engineers hard to determine the retrofitting level. Determining and providing the information for retrofitting effect of FRPs for masonry shear wall, this paper investigate in-plane shear behavior of URM and retrofitted masonry shear walls using two types of different FRP materials. Specimens were designed to idealize the wall of low rise apartment which was built in 1970s Korea with no seismic reinforcements and have 1 aspect ratio. Retrofitting materials were carbon FRP and Hybrid sheet which have different elastic modulus and ultimate strain. Consequently, this study will evaluate the structural capacity of masonry shear wall and retrofitting effect of FRP sheet for in plane shear behavior comparing with evaluation method for reinforced concrete beam which was retrofitted by FRPs.

AB - Unreinforced masonry buildings have significant portion of existing and historical buildings around the world. Recent earthquakes have shown the needs of seismic retrofitting for these types of buildings. There are many types of retrofitting materials for URM(unreinforced masonry buildings) such as shotcrete, ECC and FRPs. Many engineers use many types of fiber reinforced polymers because these types of material enhance the shear strength of wall without expansion of wall sectional area and additional weight of total structure. However, the complexity of mechanical behavior of masonry shear wall and the lack of experimental data of masonry wall which was retrofitted by FRPs may cause the problem that engineers hard to determine the retrofitting level. Determining and providing the information for retrofitting effect of FRPs for masonry shear wall, this paper investigate in-plane shear behavior of URM and retrofitted masonry shear walls using two types of different FRP materials. Specimens were designed to idealize the wall of low rise apartment which was built in 1970s Korea with no seismic reinforcements and have 1 aspect ratio. Retrofitting materials were carbon FRP and Hybrid sheet which have different elastic modulus and ultimate strain. Consequently, this study will evaluate the structural capacity of masonry shear wall and retrofitting effect of FRP sheet for in plane shear behavior comparing with evaluation method for reinforced concrete beam which was retrofitted by FRPs.

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DO - 10.4028/www.scientific.net/KEM.452-453.765

M3 - Conference contribution

AN - SCOPUS:78650745414

SN - 9780878492411

T3 - Key Engineering Materials

SP - 765

EP - 768

BT - Advances in Fracture and Damage Mechanics IX, FDM 2010

ER -

Bae BI, Park BK, Choi HK, Choi C-S. Retrofitting effect of unreinforced masonry walls using FRPs. In Advances in Fracture and Damage Mechanics IX, FDM 2010. 2011. p. 765-768. (Key Engineering Materials). https://doi.org/10.4028/www.scientific.net/KEM.452-453.765