Durability aspects related to rubble stone masonry walls strengthened with reinforced micro-concrete layers

Abstract

This paper analyses durability aspects related to the use of reinforced micro-concrete as strengthening material of ancient rubble stone masonry walls. The present study is a section of a research project carried out at the New University of Lisbon (Pinho, 2007), to evaluate some structural strengthening solutions for rubble stone masonry buildings. These kind of strengthening solutions, using sprayed micro-concrete layers (shotcrete layers), are very common in Portugal, namely in the rehabilitation of ancient buildings, as may be seen in Azores, after the earthquake of 1998.