materials needed for making (lego type) concreate blocks

[lord mud of the flyes]

So say I start with a 45 gallon oil drum and want to fill it

How much sand cement and hard core and water would I need (making them somewhere with no water supply)

Thanks

[JohnMo]

Pretty sure the there are volume calculators online, do a Google search, for volumetric concrete calculation.

 

Not sure you would be adding hard core, just sand, cement and gravel, plus water. Ratio depends on strength grade of concrete required.

Edited 21 hours ago by JohnMo

[Roundtuit]

Google suggests:

[JohnMo]

Or just go your local concrete supplier and get a 'mix on demand' truck, to fill your moulds. You tell the person in control of the truck, slump needed, strength grade, aggregate size, he will do the rest, either dump straight to mould or via wheel barrow. 30 mins to an hour later, he will be off to the next job. Zero heavy lifting needed, no guess work or arsing about

[SteamyTea]

There will be quite a bit of air in the mixture, and over time it will shrink a bit.

Some things are not worth modelling, just get some materials in and start mixing.

 

Now I assume you are thinking of a standard imperial oil drum (45 imp gal) as opposed to a US oil drum (55 US gal, or 46 imp gal).

Or somewhere between 205 and 208 litres. 

I used to listen to 208 MW when I lived in France, was one of the only English speaking music channels we could get.

[JohnMo]

1 hour ago, SteamyTea said:

I used to listen to 208 MW when I lived in France, was one of the only English speaking music channels we could get

That's a huge tangent 

[SteamyTea]

28 minutes ago, JohnMo said:

That's a huge tangent 

Been a long day behind the wiper blades.

[saveasteading]

8 hours ago, lord mud of the flyes said:

drum and want to fill it

Why?   The purpose will affect the mix.

Does it need to be strong?