Abstract
Masonry buildings built in Italy in the 60 s and 70 s of the last century frequently require energy and seismic renovation. To this end, the use of a retrofitting technique based on a multilayer coating may be applied on the building façades in order to improve its seismic and energy performances, leading to the partial or total fulfilment of structural and energy code provisions. The coating consists of a layer of Steel Fiber Reinforced Mortar combined with thermal insulation materials to get a composite package applied on the building façade. After a brief description of the proposed technique, the paper reports the results of seismic and thermal analyses carried out to prove the structural and energy performance of the retrofitting intervention.
Highlights
According to recent statistics [1], at least 30% of the current European building stock consists of buildings that are more than 50 years old
Upgrading existing masonry buildings has become an important target in order to reduce the potential economic losses and the human casualties resulting from seismic events
The present paper investigates a similar retrofitting strategy based on the combination of Steel Fiber Reinforced Mortar (SFRM) coating, which is able to provide the structure with improved seismic performance, with a thermal insulation layer applied only on its outer surface
Summary
According to recent statistics [1], at least 30% of the current European building stock consists of buildings that are more than 50 years old. Existing buildings have low energy performances that do not comply with some recent requirements, such as the Italian Ministerial Decree (DM) on 26 June 2015 [2]. The latter implements the European directive 2010/31/EU on the energy performance of buildings [3]. Besides the poor energy performance, existing buildings are frequently affected by a high seismic vulnerability due to the lack of seismic design codes at the time of their construction. Upgrading existing masonry buildings has become an important target in order to reduce the potential economic losses and the human casualties resulting from seismic events
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