Concrete spalling due to fire exposure results mainly from two processes: a 'thermo-mechanical' process due to high thermal gradients, and a 'thero-hydral' process due to the build-up of pore water pressure. This paper deals with the combination of both those processes. Large scale reinforced concrete walls were tested under hydrocarbon fire conditions to investigate concrete spalling... Paper presented at the 22nd Australasian Conference on the Mechanics of Structures and Materials (ACMSM22) held in Sydney Australia, from 11-14 December 2012