Alongside its strength and resilience, concrete is also a staple of building because it is relatively cheap and simple to make. Worldwide, 30 billion tonnes of concrete is used each year.

With its abundance, concrete takes a mammoth toll on the environment. The process for making Portland cement, the most common form used to produce concrete, for example, is one of the most carbon ...

The cement making process as described in the article is out of sequence. The first step is to heat limestone to 2700 degrees F to break the bond of the water that holds the limestone together.

Production of cement creates 2.3 billion tonnes of carbon dioxide per year, and making iron and steel releases some 2.6 billion tonnes — or 6.5% and 7.0% of global CO 2 emissions, respectively 1.

The recycled cement process requires furnace temperatures of 1600 to 1750°C (2900 to 3200°F), slightly hotter than traditional cement production. This will increase power costs, says Leon Black ...

People generate 27 billion tons of carbon dioxide each year There was 2.35 billion tons of cement used in 2007 and demand is increasing at 130 million tons per year. 1.4 billion tons of cement ...

To make steel, you need to smelt iron ore at 1,100 degrees Celsius (2,012 degrees Fahrenheit); to cook cement, your kiln needs to reach 1,450 degrees C (2,642 degrees F).