R. SENTHIVEL and S.N. SINHA Indian Institute of Technology, Delhi, India

Tests on scaled brick masonry models were carried out to investigate the response of calcium silicate brick masonry under cyclic compressive loading. Envelope stress/strain curves, common point curves and stability point curves were obtained from various cyclic tests. A simple mathematical model using polynomial functions is presented for loading-unloading-reloading stress/strain hysteresis curves. Comparison between the experimental and computed stress/strain curves shows good correspondence.