Zamil provide a range of Blast protection solutions for doors, windows and fixed partitions, as well as curtain walls which satisfy the requirements of protection from the pressure produced by an explosion.These systems are tested by submitting the samples to a pressure determined by the standard for a time of 20m/s, obtaining different classifications, from EXR1 to EXR5, depending on the pressure used in the test.
In the tragic event of a blast occurring, one of the biggest causes of injury and loss of life is from flying shards of glass that are set loose by the force of the explosion. With the increase in bomb attacks in recent decades, it has become apparent that windows are one of the key areas that need to be secured in order to protect those that may be standing nearby. The intense power of many blasts mean that standard monolithic glass, and even toughened glass, are simply not able to cope. This has created the need for blast-resistant windows that can absorb the impact and also remain in one piece. Heavily laminated glass is the most effective design for meeting this requirement, as not only will the thermoplastic layers absorb much of the blast pressure, but the layered build means that it will not shatter into pieces. Additionally, the strength and flexibility of laminated glass can resist the impact of projectiles, such as rocks, shrapnel, or other debris, which can be scattered in an explosion. Combining this glass product with a blast-resistant window frame goes a long way to providing enhanced security for vulnerable buildings. Standard blast-resistant glass is usually made with PVB interlayers, which has great shock absorption qualities, though materials like polycarbonate can also be used for increased strength. The risk of spall in a blast can also be greatly reduced by applying a polyester-based film to the rear surface of the glass, which will act as a barrier against any loose glass particles.