Experiments On Seismic Retrofitting Of In-plane
Loaded Masonry Walls With Fibre Composites
Author(s)
C. Wallner & L. Stempniewski
Abstract
Experimental investigations on the seismic retrofitting of in-plane loaded
masonry by surface-applied fibre reinforced composites were performed.
Preliminary small sample tests were carried out in order to test the mechanical
suitability of various fibre composites under typical load states in shear stressed
masonry. Afterwards suitable materials were tested on pre-damaged load-bearing
walls. In all five full-scale tests earthquake loading was simulated by the pseudo-dynamic
test method. Significant improvements of the wall’s structural
behaviour with regard to loading capacity, fracture process and cyclic
performance could be achieved by the applied retrofitting measures. Particularly
the results of a new cementitious matrix which is free of epoxy-typical
disadvantages were convincing.
Keywords: unreinforced masonry, seismic retrofitting, fibre reinforced
composites, cementitious matrix, pseudo-dynamic tests.
1 Introduction
Unreinforced masonry (URM) constructions rank among the oldest buildings of
mankind and are widespread throughout the world due to their various
advantages like easy production, low-cost materials and excellent properties
from the building physic’s point of view. But in seismic regions particularly
load-bearing masonry walls are highly vulnerable because being originally
designed mainly for gravity loads they are often not able to carry the horizontal
forces arising during earthquakes. Not only low shear resistance but also
defective workmanship or strong decay of material by exposure to climate
conditions enhance the seismic vulnerability of masonry. As strong earthquakes
Keywords
unreinforced masonry, seismic retrofitting, fibre reinforced
composites, cementitious matrix, pseudo-dynamic tests.
Related Book
Other papers in this volume
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