Carbon Dioxide (CO ) Emissions of Concrete

Reduce Portland Cement Consumption
Air and Foam Based Concrete
•Major Drawbacks:
• Foam-based Foam based concrete and AAC cannot
replace normal structural concretes – only
strengths of up to 15N/mm2 can be achieved.
• AAC manufacture process requires high
temperature and high pressure steam cure in
an autoclave. t l
• Energy (in terms of CO2 emissions) used to
operate the autoclave has to be balanced
against the savings made by reducing the
cement content content.