Edge restraint mix - Laying the edge

[Adam Ashworth]

I read on here that the concrete mix for laying the edge should be; 6 measures of small gravel with 3 measures of sharp sand and 1 measure of Ordinary Portland Cement.

Im laying the blocks on 50mm of concrete as the blocks will be laid against a wall either side and the house at the front.

Will a 50mm be ok for where my drive meets the pavement?

Does the mix sound right for what im doing?

many thanks

[seanandruby]

I'd do a stronger mix where your threshold is and make it 100ml thick at least.

[lutonlagerlout]

at least 100mm thick on threshold
LLL

[Adam Ashworth]

Ok by stronger you mean adding more cement? what ratio would you give for the sharp sand/gravel/cement?

Also you dont have to concrete inbetween do you, its only under the blocks?

Many thanks

[seanandruby]

4-2-1
Depends if your doing flexible, or rigid paving. Just concrete edgings will do, sand under main body blocks.