Testing earthquake resistancy of masonry
As part of the structural upgrading measures of buildings in northern Groningen due to frequent earthquakes, Concrefy was assigned by Arup and Arcadis to carry out research into the existing masonry structures of several buildings.
Specific properties of the structure are required for the upgrading of each building. These characteristics of the masonry can be obtained by means of limited non-destructive in-situ testing.
Three types of tests are carried out to determine the bearing load; Young's modulus and shear strength of the masonry wall, the single flatjack test to determine the bearing load, the double flatjack test to determine the Young's modulus and the shove test to determine the shear strength.
These test methods concerns the measurement of the properties by use of thin, bladder-like flatjack devices that are installed in saw cut mortar joints in the masonry wall.
Total masonry research can by carry out in multiple kinds of masonry in all kinds of buildings. The test is quick and has limited damage at the wall.