C. AMADIO and S. RAJGELJ
University of Trieste, Italy
A comparison is made of the behaviour of masonry mortars, having different composition but similar workability, under repeated loadings of uniaxial compression with imposed maximum strain histories. The ratio of plastic strain at unloading from the current state of the material to the maximum possible plastic strain is proposed as a parameter representative of the damage. The variations of such mechanical properties as strength and stiffness and of dissipated energy as a function of the damage parameter are examined.