ID1232: Contribution of the lime and sand mortar in the process of capillarity water absorption in old brick masonry

LLORENTE, ALFREDO1, CAMINO, SOLEDAD2, LEÓN, JAVIER3, OLIVAR JOSÉ 4

1 Arquitecto, Universidad de Valladolid, Departamento de Construcciones Arquitectónicas I.T. y M.M.C. y T.E. llorente@arq.uva.es, E.T.S. de Arquitectura Avenida de Salamanca 18, 47014 Valladolid, España

2 Doctora Arquitecto, Universidad de Valladolid, Departamento de Construcciones Arquitectónicas I.T. y M.M.C. y T.E. mcamino@arq.uva.es, E.T.S. de Arquitectura Avenida de Salamanca 18, 47014 Valladolid, España

3 Doctor Arquitecto, Universidad de Valladolid, Departamento de Construcciones Arquitectónicas I.T. y M.M.C. y T.E. fjleon@arq.uva.es, E.T.S. de Arquitectura Avenida de Salamanca 18, 47014 Valladolid, España

4 Técnico de Laboratorio, Universidad de Valladolid, Departamento de Construcciones Arquitectónicas I.T. y M.M.C. y T.E. jmo@arq.uva.es, E.T.S. de Arquitectura Avenida de Salamanca 18, 47014 Valladolid, España

 

It is very common to find old brick buildings in which the base of the walls is much degraded. The process influencing this degradation is the rising damp through capillary rise of water from the ground. In general, this phenomenon has been analyzed taking into account only the bricks, but the contribution of lime and sand mortar which in old brick masonry, with very thick bed joints, can reach up to 50% of the volume has not been studied. To learn more about the process tests were performed according to standards: UNE EN 1015:18 and 15801, and to compare these results with the process of water capillarity water absorption in brick walls a wall 1 meter high and 28 decimeters thick was built with two types of brick and the same type of mortar on a base of sand that was saturated with water. Water rose by capillary action through the wall and when the water rise was stabilized demolition of the wall proceeded and to measure the amount of water absorbed by specimens of mortar extracted from different courses, comparing the results from different tests, one can establish which one is comparable to the process of capillary water absorption in brick facades.

 

Keywords: brick, mortar, rising damp, masonry, building, conservation