Concrete is one of the most simple and best known building materials and probably the most vital for the strength of the constructions of your building, parking lot, patio, garden wall, paths etc. That is why it is important to know how to properly mix and pour concrete.
Concrete contains only the following ingredients: cement (Portland), gravel, sand and water. When cement is mixed with water a chemical reaction takes place. The cement does not simply “dry” it reacts with the water binding the materials in a concrete mix firmly together and harden into an incredibly strong rock like mass. Read more about How to Mix concrete