Dry concrete mix for building a low retaining wall

[andrew77]

I am planning on building a low retaining wall using upright railway sleepers. I was going to use a dry mix like fence posts as the maximum height of the wall will be about 50cm and I was going to have the posts roughly 50% exposed above ground.

I was wondering if anyone had any thoughts about the concrete mix make up. e.g, amount of cement to aggregrate / sand

Many thanks

[stoneyboy]

andrew77,
Use postfix or something similar - its quick and easy.
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