What is ordinary concrete, plain concrete, low strength concrete, high strength concrete and free flow concrete?

Ordinary concrete, also known as normal weight concrete, is a type of concrete that is made using a combination of cement, water, aggregate (typically gravel and sand), and air. It is referred to as “ordinary” or “normal weight” because it has a typical unit weight of around 2,400 to 2,800 kg/m3, which is the weight of the solid ingredients used […]