Equation of State of Autoclaved Aerated Concrete-Oedometric Testing.

This paper aims at investigating the triaxial behavior of Autoclaved Aerated Concrete (AAC) under extremely high pressures, and experimentally determine Equation of State (EOS) for several different AAC densities. Oedometric tests were carried out using a home-made high-pressure triaxial apparatus, and pressures up to ~500 MPa were applied. The complete pressure-bulk strain relationships were measured, and new findings and insights were obtained.

TNT equivalency in an internal explosion event.

The peak gas pressure developed as a result of a confined explosion is an important parameter characterizing the pressure signal and is crucial for assessment of the structural response of the confined space envelope elements. The gas pressure depends on the amount of the released energy, including the afterburning energy. A new analytical model is presented to predict the gas pressure developed in a confined volume, for different types of explosives, as function of the charge weight (W) and the free confined volume (V), considering the afterburning effect.