A relatively lightweight, modular, blast control system utilizes a plurality of fabric panels that may be joined to form a matrix to protect or control a blast.

An anti-blast concrete and a method of fabricating an anti-blast structure member using such anti-blast concrete are disclosed. The composition of the anti-blast concrete according to the invention includes, in parts by weight, 1.0 part by weight of cement, 1.0 to 2.5 parts by weight of fine aggregates, 1.0 to 2.5 parts by weight of coarse aggregates, and a plurality of reinforcing fibers. The weight ratio of the reinforcing fibers to the cement ranges from 0.5% to 3%. The plurality of reinforcing fibers are a plurality of carbon fibers or a plurality of aramid fibers. A test body, made of the anti-blast concrete of the invention, has an average number of times of repeated impacts at an impact energy of 49.0 Joules equal to or larger than 41 times at 28 days of age.

A blast-resistant window attachment, or retrofit window insulation system, wherein panes of polymer film, such as TPU or ETFE, are held in a roll-formed stainless steel frame to form a pane assembly. One or more pane assemblies are stacked to make a multilayer unit or are mounted in a robust polymer casing that is sized to fit the window frames of an existing building window or to attach to the wall of the building surrounding the window. The polymer film or films can absorb energy of a blast without breaking provided that the collective thickness of the film(s) is at least 20 mil, and preferably 24 mil or more. The casing is, preferably made from a high strength polymer, such as Acrylonitrile Butadiene Styrene, or a metal such as stainless steel. In experiments conducted by the Army Corp of Engineers, the retrofit window insulation system of the present invention, when securely bolted to the structural components of the building around the window, demonstrates a remarkable ability of the polymer film panes to absorb blast energy and mitigate secondary debris hazards.

A blast-resistant window attachment, or retrofit window insulation system, wherein panes of polymer film, such as TPU or ETFE, are held in a roll-formed stainless steel frame to form a pane assembly. One or more pane assemblies are stacked to make a multilayer unit or are mounted in a robust polymer casing that is sized to fit the window frames of an existing building window or to attach to the wall of the building surrounding the window. The polymer film or films can absorb energy of a blast without breaking provided that the collective thickness of the film(s) is at least 20 mil, and preferably 24 mil or more. The casing is, preferably made from a high strength polymer, such as Acrylonitrile Butadiene Styrene, or a metal such as stainless steel. In experiments conducted by the Army Corp of Engineers, the retrofit window insulation system of the present invention, when securely bolted to the structural components of the building around the window, demonstrates a remarkable ability of the polymer film panes to absorb blast energy and mitigate secondary debris hazards.

A munition includes a warhead having a warhead axis and axially opposed first and second warhead ends. The warhead includes: a tubular shock attenuation barrier including an axially extending passage extending from a first barrier end proximate the first warhead end to a second barrier end proximate the second warhead end; an explosive core charge disposed in the passage; an explosive main charge surrounding the shock attenuation barrier; projectiles surrounding the main charge; a core charge detonator; and a main charge detonator. The warhead is configured to be activated in each of a first projection mode and an alternative second projection mode. When the warhead is activated in the first projection mode, the main charge detonator detonates the main charge to thereby forcibly project the projectiles from the warhead with a first set of projection velocities and velocity profile. When the warhead is activated in the second projection mode, the core charge detonator detonates the core charge proximate the first barrier end such that a core charge detonation wave propagates through the passage to the second barrier end and, at the second barrier end, the core charge detonation wave detonates the main charge to thereby forcibly project the projectiles from the warhead with a second set of projection velocities and velocity profile. The second set of projectile velocities and velocity profile is different from the first set of projectile velocities and velocity profile.

A munition includes a warhead having a warhead axis and axially opposed first and second warhead ends. The warhead includes: a tubular shock attenuation barrier including an axially extending passage extending from a first barrier end proximate the first warhead end to a second barrier end proximate the second warhead end; an explosive core charge disposed in the passage; an explosive main charge surrounding the shock attenuation barrier; projectiles surrounding the main charge; a core charge detonator; and a main charge detonator. The warhead is configured to be activated in each of a first projection mode and an alternative second projection mode. When the warhead is activated in the first projection mode, the main charge detonator detonates the main charge to thereby forcibly project the projectiles from the warhead with a first set of projection velocities and velocity profile. When the warhead is activated in the second projection mode, the core charge detonator detonates the core charge proximate the first barrier end such that a core charge detonation wave propagates through the passage to the second barrier end and, at the second barrier end, the core charge detonation wave detonates the main charge to thereby forcibly project the projectiles from the warhead with a second set of projection velocities and velocity profile. The second set of projectile velocities and velocity profile is different from the first set of projectile velocities and velocity profile.

A blast resistant container includes a rigid outer cylinder, a rigid inner cylinder and at least one pumice brick. The rigid inner cylinder has a longitudinal axis. The at least one pumice brick is within the interior of the rigid inner cylinder.

A blast resistant container includes a rigid outer cylinder, a rigid inner cylinder and at least one pumice brick. The rigid inner cylinder has a longitudinal axis. The at least one pumice brick is within the interior of the rigid inner cylinder.

A hazardous containment vessel is comprised of a body and a lid assembly for at least minimizing fragmentation from a low-energy explosive. The body is comprised of at least an inner liner, an outer liner, and a lock catch. The lid assembly is comprised of at least a lid, a lock plate, and a lock arm. The lock plate includes a slot for each lock arm, wherein the lock arm passes through the slot, and wherein the lock arm is capable of rotation caused by vertical movement of the lock plate to engage a lock catch.

A hazardous containment vessel is comprised of a body and a lid assembly for at least minimizing fragmentation from a low-energy explosive. The body is comprised of at least an inner liner, an outer liner, and a lock catch. The lid assembly is comprised of at least a lid, a lock plate, and a lock arm. The lock plate includes a slot for each lock arm, wherein the lock arm passes through the slot, and wherein the lock arm is capable of rotation caused by vertical movement of the lock plate to engage a lock catch.