How to Make Concrete Blocks

Concrete blocks are used for hundreds of construction and household projects. If you are in need of several blocks then it may be wiser and more affordable to make them yourself. It can be somewhat of a task, but in the end it will save you money. Plus, you will have the tools and know how to make them again.

  1. Obtain concrete block molds. These molds can be handmade from stones or bricks. You can also buy these at hardware stores.

2. Determine the ratio of sand, cement, gravel and water needed for your concrete. There are several combinations used for different types of concrete blocks. Different projects require different kinds.

3. Mix appropriate concrete mixture. You can do this by hand or with a mixer. If you are making several concrete blocks a mixer is definitely recommended. Be careful to follow manufacturers' instructions if using a concrete mixture.

4. Cover molds with a concrete-releasing agent. This will help to remove the block once it sets.

5. Carefully and evenly pour your mixture into your molds. Be sure to settle the concrete mixture and release any air pockets.

6. Level the molds off with a board. This will assure a smooth finish.

7. Allow to harden and set. Depending on the size of you mold, you should allow the block to set for a minimum of 24 hours.

8. Remove block from mold. If properly set, it will pop out fairly easy.

9. Reuse mold. The molds are reusable, so be sure to clean and keep these for later use.