A heritage-listed building in the center of Athens, consisting of basement, ground floor, 1st and 2nd floor and an attic, is being renovated and converted into a shop and 4 apartments on the floors. It was built in the 1930s by brick walls and reinforced concrete slabs. In the basement and the ground floor are stone masonry and in the floors brick walls. The slabs are partly supported on beams and partly on the masonry. Inside the building are a few thin concrete columns supporting the beams.
The strengthening method provides that the masonry is converted into reinforced masonry by applying a layer of high strength cement mortar about 7 cm thick containing the required reinforcement. It is a class C90 / 105 high performance concrete and is self-compacting and non-shrinking. It is placed in all the perimeter walls as well as in the main wall, which is located in the building.