We construct silage bunkers suitable for both maize or crop, but maize is more common.
Our construction method uses a heavy duty reinforced concrete floor with concrete tilt panel walls, either 1.8m or 2.4m high. We lean the walls out slightly at the top so that even when the silage shrinks in the stack, it maintains contact with the walls. It is important to minimise the air gap that could otherwise form here, which would result in spoiled silage.
The juices that leach out from silage can be very aggressive on concrete, resulting in corrosion and damage to the concrete surface. We use mixes that include special additives in all of our concrete before it is poured, creating a silage bunker that is tough and long lasting.