What Is The Best Concrete Mix?

From Swimming Pool Steve

Concrete is the most ubiquitious man made substance in the world.  It might even be argued that the foundation of the world is built on concrete.  This versatile, strong material is singularly ideal for so many construction projects, not the least of which being the inground swimming pool.  Concrete is a mix of some basic and sometimes not so basic materials, which can cause confusion as to what really constitutes concrete.  This post from Swimming Pool Steve gives one of the easiest to understand treatises on concrete ever published.

Here is an excerpt from the post:

What is Concrete?

From Gizmodo

After Water, It's the most widely used material on our planet.  Ton for ton, says this article from Gizmodo, concrete is used by humans more than steel, wood, plastics, and aluminum combined.  The supply and use of concrete is a $100,000,000,000 industry.  What is amazing is that most people don't really understand what concrete really is.  This post explains the volcanic origins of concrete, how it was prevalent in the ancient world and then forgotten, and how it's rediscovery and evolution is doing more to shape our physical world than any other material on Earth.

Here is an excerpt from the post: