CRESPI, PIETRO1; FRANCHI, ALBERTO2; GALEOTA, DANTE3; GREGORI, AMEDEO4; RONCA, PAOLA5

1) Researcher, Politecnico di Milano (Italy),Dept. of Architecture, Built Environment and Construction Engineering, crespi@stru.polimi.it

2) Full Professor, Politecnico di Milano (Italy),Dept. of Architecture, Built Environment and Construction Engineering, alberto.franchi@polimi.it

3) Full Professor, University of L’Aquila (Italy),Dept. of Civil, Construction and Environmental Engineering, dante.galeota@univaq.it

4) Researcher, University of L’Aquila (Italy),Dept. of Civil, Construction and Environmental Engineering, amedeo.gregori@univaq.it

5) Full Professor, Politecnico di Milano (Italy),Dept. of Architecture, Built Environment and Construction Engineering, paola.ronca@polimi.it

The paper presents the experimental investigation carried out at the University of L’Aquila (Italy) on wall specimens representative of the ancient masonry of “Palazzo Camponeschi”, an historical building situated in the old city centre and damaged by the April 2009 earthquake. The preparation of the specimens was made according to traditional techniques, using original stone elements and typical poor mortar. After the curing periods, the wall specimens have been variously retrofitted. Mortar injections were performed and various coating techniques and material were applied on the walls external surfaces, including use of steel wire nets, basalt fabrics and fibre reinforced self-compacting concrete respectively. Compression and shear-compression test were carried out to evaluate the effects of the different reinforcing methods on stiffness and strength of the experimental wall specimens.

Keywords: historical masonry, experimental tests, retrofitting.