Curing the slab

We heard from our site supervisor yesterday who advised that the frame won’t start until next Wednesday 19th April as the workers are doing another house at the moment.

This was welcome news as one of the things we were concerned about is that the slab would not be left to cure before the frame went up. This slight delay means it will now be two full weeks between slab pour and the frame starting. Whilst ideally we would have liked there to be a 4 week wait we were told early on in the sales process that this would not be possible.

Our builder has a guaranteed build time and if they go over that time they are required to pay us $250 per week towards our existing mortgage/rent. Of course they do not want to be in this position so the only delays that are permitted are those on their end through particular circumstances.

It has also been raining in Melbourne this past week which is great for the slab. Concrete does not dry, it cures. It is desirable to keep the surface of the concrete wet or damp after it initially sets up and prevent dry-out which ends the curing process and limits final strength. After concrete is placed, the concrete increases in strength very quickly for a period of 3-7 days. Concrete which is moist cured for 7 days is about 50% stronger than uncured concrete.

 

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