After all those eco-friendly products we have seen, it is now time to play with some eco-friendly cement. A group of professors from Drexel have come together to produce cement that uses an extremely eco-friendly material called AAC.
Michel Barsoum and Alexander J Moseson, two professors in Materials Science And Engineering Department from Drexel, along with Aaron Sakulich and Sean Miller, two graduate students from Drexel are the team members behind this project.
The alkali activated composition of AAC consists of slag and 68% limestone. Slag is an industrial byproduct and limestone is a very common and cheap material and contains very less amount of carbon dioxide.
The main advantage of this new eco-friendly cement is that it emits 97% less carbon dioxide than the regular Portland cement. Each ton of Portland cement discharges a ton of CO2 into the atmosphere, while the new invention comes across as energy efficient and cost effective.
The major component of Portland cement is clinker which is made by heating limestone, clay, and bauxite and iron ore. The making of Portland cement emits a large amount of carbon dioxide due to the heating process. And, significantly enough, in Portland cement only 5% limestone is used.
Another major aspect about the new eco friendly cement is that cost of production is reduced by half.
This new eco-friendly cement can be used in mortars and in concretes and in the construction of roads and buildings. The scientists expect more longevity to the product and their research aimed at giving a longer life to the product is still on.
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