1. Make sure the concrete ground area is compacted properly. There is a layer of gravel on top of the Compacted soil. Set proper base on top of it. 

2. Use low water concrete mix & this will help to control cracking.

3. Install Proper Joints.

4. Properly cure the concrete – When most people think of curing, they think only of maintaining moisture on the surface of the concrete. But curing is more than that-it is giving the concrete what it needs to gain strength properly.