Influencia de la adición de fibras en las propiedades de los morteros de cal hidráulica

Abstract

The influence of carbon and basalt fibres addition on hydraulic
lime mortars mechanical properties and durability has been
studied. The objective is to evaluate the possible use in
restoration of architectural heritage, as an alternative to
Portland cement because of the pathological processes that
the latter causes. To assess the effect, the obtained results
have been compared with two reference mortars: hydraulic
lime with no additions and basalt fibres. The amount of fibres
to be incorporated is questioned in the first phase. The tests
performed show that the incorporation of 1% of fibres (volume)
in the mortars, improves their behaviour under bending and
compression loads. Additionally, the fibres increase the ductility
of the reinforced mortar, almost doubling the effect that causes
the addition of basalt fibres. Finally, the durability studies show
the increase in ductility caused by the addition of carbon fibres,
despite the logic decrease experienced after the ageing tests.