Behaviour of masonry walls subjected to fire: experimental tests and analytical model

Experimental tests on blocks for masonry walls made by several materials are performed to detect the compressive strength depending from temperature: about 400 cylinders - diameter D=100 mm height H=200 mm - are tested from 20°C to 700°C of clay, lightweight concrete, aerate autoclaved concrete, calcium silicate. The data base from tests has been used to calculate the collapse domains (bending moment - axial force – time of exposure on fire). A numerical example shows the applicability of the proposed method.