Daily multiple tractor and trailer traffic during harvest and artic collection.
Does the frequency of use matter, the slab is either up for it or not?
Problem is tight turning of artic and trailer axles creating a screwing effect of tyres on concrete.
What is AIR and what spec mesh?
Will it need to be vibrated?
A slab that gets 50 wagons a day over it needs to be a lot stronger
Then one that gets 1 a year but I understand where you're coming from.
Tyres screwing is the worst for the concrete, go 8" thick.
Air is an additive they put in
I don't know mesh spec, I ask for 8mm @BAC might know the name for it
Yes vibrate it, un-vibrated concrete is weak
What depth of sub base would be ideal for 8" concrete?Air entraining is an additive put in concrete used by road traffic to resist the effects of road salt brought in on tyres.
The use of single mesh A252 or similar allows joints to be spaced further apart.
For more strength then double mesh or use Structural fibres These are not the same as anti surface cracking fibres and cost similar to mesh
Depth of slab 200mm ( 8'') but most important is well compacted sub base
Mix RC45/50 as dry as you can lay it and use vibrating beam to compact
If its a greenfield site Then dig off topsoil and build back up with hardcore.
Biggest in bottom and build up in layers using smaller stone and more fine nearer top. Most important is too compact each layer well
If base is solid with no soft spots then 8'' to 12'' subbase of 40mm down to dust will be ok if compacted till it won't compact no more
Thanks for the advice.If its a greenfield site Then dig off topsoil and build back up with hardcore.
Biggest in bottom and build up in layers using smaller stone and more fine nearer top. Most important is too compact each layer well
If base is solid with no soft spots then 8'' to 12'' subbase of 40mm down to dust will be ok if compacted till it won't compact no more
special pump mixThey always say you shouldn't add water, it goes down a lot easier if you do but I always resisted until we had a concrete pump here at which point they made it into slop and insisted it would be fine so now I'm confused.
I would have concrete 6'' ( 150mm ) with a subbase around 8'' but it all depends on the ground underneath You need to get rid of any soft spots
Also have a strong mix to leave a tight hard surface, no added water and powerfloat. This will then withstand banging and scratchs better
No need for Terram if you can do the job without the ground getting wet while you get stone compacted. That would mean around here doing the digging next summer as the water table is about 1ft above ground !!!That's about what I was thinking, I was planning on 3" clean too 4" thick then build up with 3" of 2" clean and 1" down to finished level well rolled at each stage.
Grounds good n hard but would you use terram ?, I haven't used terram outside in the yard area !. It's settled but no more than I expected it to.
No need for Terram if you can do the job without the ground getting wet while you get stone compacted. That would mean around here doing the digging next summer as the water table is about 1ft above ground !!!
They always say you shouldn't add water, it goes down a lot easier if you do but I always resisted until we had a concrete pump here at which point they made it into slop and insisted it would be fine so now I'm confused.
if you order it the slump you want to lay it at,with a cement /water ratio of 0.55 they will add the extra cement to take account of the extra water you require for a wet mixIf you want it runny and wet order it runny and wet, you dont let the driver add water thats all.