Deformation and Thermal Characteristics of Concrete Throughout the Fire Burning and Decay Phases (original) (raw)
Adequate knowledge of the deformation and thermal characteristics of concrete throughout the fire burning and decay phase is paramount to predict the deformation history of concrete structures subjected to fire. This paper presents new experimental data on the deformation of axially loaded plain concrete prisms as well as the thermal diffusivity of plain concrete slabs subjected to fire conditions. The concrete is designed as a normal strength, structural concrete with a design compressive strength of 50 MPa. When investigating the deformation characteristics the variables are: 1) stress ratio (0, 17, 33 and 50 %); defined by the ratio of applied axial stress and the cold compressive strength; and 2) maximum core temperature when cooling is induced (200, 400, 600 and 800!C). Deformations considered are the total free expansion as well as the total deformation comprised of thermal and transient strains, of loaded concrete. While the specimens are about twice that used in earlier stud...
Loading Preview
Sorry, preview is currently unavailable. You can download the paper by clicking the button above.