Concrete mixes

1 May 2003
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United Kingdom
Ok, I need to lay a bit of concrete, instead of aggregate I have 1/2" (landscaping) ballast and some bags of building sand. How much sand should I add to the "stones" to make a good basic mix, or is it just a case of "yup the stones look red now" ?
N.B. Light weight base for (yet another) aviary. 5:1 do ?
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I would go for 2:1 stone to sand
From 4:2:1 mix (4 aggregate,2 sand,1 cement)
Or 6:1 ballast:cement
C 2" over old set slabs to 3" over broken bricks/ slabs/ rubble. Doesn't have to take a lot of weight as I think a macaw only weighs a few pounds and the aviary is made from ally frames !!
Thanks for the help.
I just love Bank holidays, have a day off work, take a break...... :eek:
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Scoby_Beasley said:
I just love Bank holidays, have a day off work, take a break...... :eek:
In my dream :LOL:

Info for others,

Foundations, drives, floor slabs and any other heavy duty
1 part cement, 5 parts all-in aggregate (20mm max)
1 part cement, 2.5 parts sand, 4 parts coarse aggregate (20mm max)

For paths and thin section
1 part cement, 3 3/4 all-in aggregate (10mm)
1 part cement, 2 parts sand, 3 parts coarse aggregate (10mm max)

For paving les than 50mm and bedding mortar for slabs
1 part cement, 3 parts sand

More information and calulation here
If "Monty" and "Mrs Monty" don't start doing "what comes naturally" pretty soon, they'll weigh even less 'cos I'll put them on rations !!! ;)

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