I don't think I saw any concrete structures when I was in Afghanistan. We used Hesco bastion for everything. I think even the furthest-back hospital was just sheet steel siding construction, surrounded by Hesco.
Hesco is another very interesting material. Cheap, extremely light and easy to deploy, until filled, which can be done by anyone with an entrenching tool (small infantry shovel/spade that everyone carries) if required, and then basically indestructible.
How many of those concrete walls can a helicopter carry? One? It's going to take a long time to build any wall or structure. Or do you send an armoured cement mixer and create on-site? That's not realistic in a place like Afghanistan.
I'm not an engineer but I would also guess that Hesco survives better - a box of stones can lift up and crash back down with an explosion where if concrete cracks it's permanently broken.
https://en.wikipedia.org/wiki/Hesco_bastion
Hesco is another very interesting material. Cheap, extremely light and easy to deploy, until filled, which can be done by anyone with an entrenching tool (small infantry shovel/spade that everyone carries) if required, and then basically indestructible.
How many of those concrete walls can a helicopter carry? One? It's going to take a long time to build any wall or structure. Or do you send an armoured cement mixer and create on-site? That's not realistic in a place like Afghanistan.
I'm not an engineer but I would also guess that Hesco survives better - a box of stones can lift up and crash back down with an explosion where if concrete cracks it's permanently broken.