If you think that concrete blocks are not durable, then you are clearly mistaken. The finished product of concrete blocks becomes as hard as rock and is resistant to degradation and corrosion. Therefore, these building blocks are worth investing worth investing because of its long-term benefits and easy maintenance. Another reason for the popularity of concrete building blocks is its design flexibility. You can mould these blocks in any shape that you want and have them fitted according to architectural design that you have in mind.