How long before laying bricks

Hi Guys,

I have just had a concrete raft slab laid as the foundation for my new conservatory.

The slab is approx 215mm thick on top of MOT type 1

Slab was a ready mix of RC35 and reinforced with A142 and some 12mm Rebar

Couple of questions for you;

I protected the concrete from rain with a large Tarp tented over the top

How long does the concrete need to be protected?

and How long before I can build up to DPC level? (4 brick courses)

Many Thanks