Ready-mixed concrete was first produced in Germany at the beginning of the twentieth century (1903), and then in the US in the following few years. In 1914, the first transit-mixer was developed in the US with the purpose of transporting the concrete. Immediately after the transit-mixer was developed in the US, in 1927, German engineers patented the “Grout Pump”, which is to be used to pump the concrete from the transit-mixer to the site, where the concrete will be used. Many ready-mixed concrete companies were founded after the war years in particular, some of which are still operational today. In the following years, it did not take long for the ready-mixed concrete to spread and to be adopted as the basic construction material, and the ready-mixed concrete was started to be produced and used in many countries in a short period of time.