A new technique is proposed for reinforcing rubble stone masonry walls (double and triple-leaf walls), when the fair-face masonry must be kept. The reinforcement technique consists of embedding a continuous mesh of high strength steel cords in the mortar joints after a first repointing, and then anchoring this to the wall by means of transversal steel bars. A second repointing covers the cords and the heads of the steel bars. This gives a reinforced fair-face masonry wall in which there is increased compression, shear and flexural strength, an effective transverse connection between the masonry leaves due to the presence of the steel bars, and the capacity to withstand tensile stresses, as was confirmed by the first tests. The reinforcement is non-invasive and reversible, and is aimed at integrating the masonry rather than transforming it. Various experimental tests, briefly presented here, have clearly demonstrated the structural effectiveness of this technique.
RUBBLE STONE MASONRY STRENGTHENED USING “RETICOLATUS” SYSTEM
BORRI, Antonio;CORRADI, Marco;SPERANZINI, Emanuela;
2009
Abstract
A new technique is proposed for reinforcing rubble stone masonry walls (double and triple-leaf walls), when the fair-face masonry must be kept. The reinforcement technique consists of embedding a continuous mesh of high strength steel cords in the mortar joints after a first repointing, and then anchoring this to the wall by means of transversal steel bars. A second repointing covers the cords and the heads of the steel bars. This gives a reinforced fair-face masonry wall in which there is increased compression, shear and flexural strength, an effective transverse connection between the masonry leaves due to the presence of the steel bars, and the capacity to withstand tensile stresses, as was confirmed by the first tests. The reinforcement is non-invasive and reversible, and is aimed at integrating the masonry rather than transforming it. Various experimental tests, briefly presented here, have clearly demonstrated the structural effectiveness of this technique.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
