Characterization of a compatible low cost strengthening solution based on the TRM technique for rammed earth


Oliveira, Daniel V.; Silva, Rui André Martins; Barroso, Cristina; Lourenço, Paulo B.

Experimental characterisation; Rammed earth; Strengthening; TRM

Rammed earth constructions are widely found worldwide, but they are endangered by their recognised high seismic vulnerability. As compatible and affordable reinforcement approaches are important requirements for these constructions, a strengthening solution based on low cost textile reinforced mortars (LC-TRM) is proposed here, within the framework of a large research project. This paper presents the results of an experimental program aimed at characterising low cost meshes available in the market (glass fibre, plastic, metallic and nylon) and at assessing possible mortars (unstabilised earth, stabilised earth, commercial earth and cement-based) capable of integrating the LC-TRM strengthening system. In general, the results obtained seem to indicate that the glass fibre meshes and the earth mortar are good options.