Blast wall

A blast wall is a barrier designed to protect vulnerable buildings or other structures and the people inside them from the effects of a nearby explosion, whether caused by industrial accident, military action, or terrorism.

Research by Cranfield University Defence Academy, building on earlier work, has shown that blast walls have the following properties: Permanent blast walls can be made from pre-cast reinforced concrete,[4] or steel sheeting.

These include the Bremer wall concrete barriers used in Iraq and Afghanistan by US Armed Forces, and the Concertainers, wire mesh containers filled with sand or soil, which are used by British Armed Forces.

Media related to Blast barriers at Wikimedia Commons

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U.S. and Afghan soldiers standing behind a blast wall made from HESCO bastions in Afghanistan in 2012
Damage to Bremer wall concrete barriers in Afghanistan, 2012