Concrete curing

[WWilts]

New build in progress.

Patio, pedestals will support porcelain pavers.

Now planning the base. Already some concrete on compacted stone in place, but about 450mm below finished patio level. Not level.

Current plan: Use existing hardcore on site to raise level a bit. Then pour 100mm thick concrete. Then set pedestals on the concrete, with pavers on top.

Question: What curing time to allow before placing concrete on pedestals?
Prefer to get on with pedestals within days rather than wait weeks for curing.
Is there a solution to accelerate the process that is reasonably low cost?
 

[PeterW]

9 minutes ago, WWilts said:

Current plan: Use existing hardcore on site to raise level a bit. Then pour 100mm thick concrete. Then set pedestals on the concrete, with pavers on top.

pedestals are adding unnecessary cost and complexity - just bring the slab up to the correct level and lay the porcelain full bed and grout. 

[WWilts]

Pedestals are to bridge the height difference between weepholes and finished floor level. 

Question is what concrete to use (cost is a consideration)

[markc]

12 minutes ago, WWilts said:

Pedestals are to bridge the height difference between weepholes and finished floor level. 

Question is what concrete to use (cost is a consideration)

Pedestals can be on a slab, placed on pads or even cast as pad and post.

a raised pedestrian area is 5KN/m2 so very low ground loadings.

curing time, allow a week to be on the safe side. 

Edited November 2, 2022 by markc