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Talks and Poster Presentations (with Proceedings-Entry):

S. Korjenic:
"Prestressing of masonry buildings with aramid rods";
Talk: Zusammen in die Zukunft - Zajedno u buducnost, Sarajevo; 2008-08-27 - 2008-08-31; in: "Zbornik radova", Band 1, Sarajevo (2008), 81 - 86.



English abstract:
This paper deals with the prestressing of masonry buildings, with the focus on prestressing for reinforcement activities at historical masonry.
Basically there can be used three protection techniques for masonry in the retrofit, wich are injection, anchoring or prestressing. The choice for one technique depends on the heaviness of the damage, where prestressing of masonry is basically used for grave damages. A significant characteristic of masonry is the lower tensile strength in comparision to the comprehensive strength. Due to this fact, the prestressing of masonry tries to make a specific leading-in of compressive forces into the not guaranteeing tensile strength material. With this method existing cracks can be sealed and an accruing of new cracks can be prevented. Another effect of prestressing is to change the flow of forces in the masonry, which is a big intervention in the structure.
The research work consists of different tests on the Technical University of Vienna. These tests were made with the material Aramid that has for example the advantage of a high stiffness in relation to the low weight or the excellent corrosion resistance.
With the help of a pull-out experiment prestressing with aramid rods was tested. In this method the tension force is transferred into the masonry by friction, adhesion and shear action.
According to the composite load transmission no large anchorage areas are needed, which is a great advantage for the preservation of historical monuments.

Keywords:
historical masonry, injection, Aramid

Created from the Publication Database of the Vienna University of Technology.