The thermal and physical properties of concrete were investigated at high temperature to determine how these properties might change in the event of a fire. The influence of the type and content of aggregate was also investigated. It was found that the degradation and mass loss of concretes depends on the type of aggregate used. It was also determined that the porosity of concretes increases as temperature increases, and that ...
Intumescent paints protect steel structures from fires by creating insulative foams when heated above a critical temperature. This paper examines the fire resistance capabilities of phenyl silicone coatings in comparison to intumescent paints. A thermal constant analyzer measured the thermal conductivity of the silicone-based coatings using the transient plane source (TPS) technique. Results showed that the silicone/modifier coating consistently had lower thermal conductivities than the silicone coating. At heightened ...
In order to investigate the morphology of intumescent polyurethane (PU), X-ray tomography is used. Nano MgO was added to some of the chars as a synergist. The results of the morphology investigations were then correlated with measured thermal conductivities of PU chars over a range of temperatures. It was found that X-ray tomography was useful in observing the breakdown of chars during burning. In addition to this, adding nano MgO ...
Using the transient plane source (TPS) technique, the thermal conductivity and thermal diffusivity of concrete and wood samples were measured at elevated temperatures. The measured values are compared to established literature values and show good agreement....
This research aims to determine the effect of altering filler particle sizes and shapes, on the thermal and mechanical properties of polypropylene (PP). Fillers such as thermally reduced graphite oxide (TRGO), multi-layer graphene (MLG250), carbon black (CB), multiwalled nanotubes (MWNT) and expanded graphite (EG), were added to the PP base. A thermal analyzer was used to measure the thermal conductivity of the various PP composites. Results determined that the PP ...
