How to Make Pavers

You can use a string of the radius you need tied to a round dowel to mark out the area for your circle. Then put wooden stakes into the ground every few inches around the circumference and either use cardboard lined with a piece of painters' plastic to create your frame, or use flat rolls of aluminum gutter material or seamed painters' canvas drop cloths to make forms. Support your form with those wooden stakes. Save the canvas idea for after you know how it works. Cardboard and thin wood lined with plastic is easy to make into most any shape for forming concrete. Home improvement stores sell cardboard column-forming tubes if needed. Some people use PVC, poly, or rubber sheeting to make their forms.

The cement powder and water mixture needs to be correct in order to have a paver come out of the form correctly. Research for your area of the country as to what combination of products work best because it will be impacted by types of materials and local environment conditions.

If the concrete dries out, it will stop curing. The longer concrete cures, the stronger it will be. After two weeks, concrete has achieved about 90% of its strength. (Compressive strength.)