Blast wave barriers

According to Kaye 5l currently much in use arc laced concrete walls (Fig. 131) forming a shock wave barrier, but more modern designs are those of suppressive structures. They are made of new suppressive structures of several layers of louvered and perforated plates of angle iron and z bars. This allows controlled release of blast effects from a detonation within the structure. Subsequently a controlled release of blast effects occurs. 

Blast— The brief and rapid movement of air, vapor, or fluid away from a center of outward pressure, as in an explosion or in the combnstion of rocket fuel the pressure accompanying this movement. Blast containment—Containing an explosive force so the blast wave and fragmentation materials are contained within a border made by barriers, walls, revetments, or other materials or olqects. Blast effect—Destruction of or damage to personnel, vehicles, or structures from an explosive force by a weapon designed to explode on contact with or above the ground. 

Blast mitigation—Varions physical measures that can be used to lessen the damage of a blast wave on critical assets. These measnres include, but are not limited to, blast walls, blast barriers, standoff distance, and structnral hardening. 

One way to reduce the severity of an explosion is to separate quantities of materials by distance and barriers. A blast wave deteriorates with distance and a barrier that can withstand a blast wave will reduce the energy of the wave. 

Blast containment containing an explosive force so the blast wave and fragmentation materials are contained within a border made by barriers, walls, revetments, or other materials or objects... 

Besides the protection afforded by barriers, sometimes the reinforcement of structures exposed to a possible explosive blast is considered. It is useful to remember in this connection that the time history of the pressure difference with reference to the preexisting one, generated by an explosive wave at a point a certain distance from the blast, is of the type shown in Figure 17-6. 

Shetty, A.K., Mishra, V, Kodali, M., et al., 2014. Blood brain barrier dysfunction and delayed neurological deficits in mild traumatic brain injury induced by blast shock waves. Front. Cell. Neurosci. 8,1-10. 

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