Current Status of Concrete – 1
In the 20th century, the production of concrete which was the driving force for the building industry, made a constant increase in synchronicity with economic growth.
It is expected that the production of cement, being the main ingredient of concrete, will continue to increase. It is assumed that the consumption will be doubled by 2050 compared to the turn of the century. Additionally, cement is produced by heating natural limestone with other materials through a process known as calcination. In order to calcine at the high temperature of 1450 °C, a lot of heat energy is required that results in vast CO2 emission.