Which type of wall is regarded as the most resistant to a blast explosion?

Thick reinforced concrete walls are regarded as the most resistant to a blast explosion due to their structural integrity and density. The use of reinforced concrete combines the compressive strength of concrete with the tensile strength of steel reinforcement bars, allowing the wall to effectively absorb and disperse the energy from an explosion. The thickness of these walls further enhances their ability to withstand high-pressure shock waves and impacts, minimizing damage and protecting occupants and critical infrastructure.

In contrast, while steel-frame building walls can provide some resistance, they lack the mass needed to effectively absorb the energy from a blast. Thick brick or concrete walls can offer some protection as well, but they may not have the same level of structural reinforcement as reinforced concrete. Thick earthen barricades can provide some resistance but are often less effective than engineered solutions designed specifically for blast protection, like thick reinforced concrete walls. Hence, when it comes to blast resistance, the combination of materials and design in thick reinforced concrete walls makes them the superior choice.