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Two solutions developed and implemented in NZ for seismic improvement of URM buildings. Engineered Cementious Composite (ECC) applied as shotcrete Carbon Fibre Strips applied Near Surface Mounted. Strengthening of URM buildings using ECC Shotcrete. Ultimate. Yield. - PowerPoint PPT Presentation
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Dr. Jason Ingham The University of Auckland
Two solutions developed and implemented in NZ for
seismic improvement of URM buildings
• Engineered Cementious Composite (ECC) applied as shotcrete
• Carbon Fibre Strips applied Near Surface Mounted
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Tens
ile st
ress
(MPa
)
Tensile strain (%)
Strengthening of URM buildings using ECC Shotcrete
Yield
Ultimate
Test program to provide design methodology
6 out-of-plane test 51 in-plane test• 25 clay brick masonry• 26 concrete masonry
Yi-Wei Lin
Implementation
Wintec F block
Victoria Park Chimney
NSM CFRP retrofitNear surface mounted (NSM) Carbon FRP (CFRP) strips
Groove preparation 15mm x 1.2mm CFRP strips Retrofitted wall
CFRP NSM
d fbp
t p
b f
Clay brick
Clay brick
Epoxy
CFRPstrip
Test results
Close up – crack pattern
PIC
Hold downsteel rods
Plaster layer
Aluminiumgrip plates
Steel angle andrubber padrestraints
Steelrestraintplate
Clamp force
NSM CFRPstrip
Steelrestraintplates
53 pull tests conducted
In-plane wall panels